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/**
* lessphp v0.5.0
* http://leafo.net/lessphp
*
* LESS CSS compiler, adapted from http://lesscss.org
*
* Copyright 2013, Leaf Corcoran <leafot@gmail.com>
* Licensed under MIT or GPLv3, see LICENSE
*/
/**
* The LESS compiler and parser.
*
* Converting LESS to CSS is a three stage process. The incoming file is
parsed
* by `lessc_parser` into a syntax tree, then it is compiled into another
tree
* representing the CSS structure by `lessc`. The CSS tree is fed into a
* formatter, like `lessc_formatter` which then outputs CSS as a string.
*
* During the first compile, all values are *reduced*, which means that
their
* types are brought to the lowest form before being dump as strings. This
* handles math equations, variable dereferences, and the like.
*
* The `parse` function of `lessc` is the entry point.
*
* In summary:
*
* The `lessc` class creates an instance of the parser, feeds it LESS code,
* then transforms the resulting tree to a CSS tree. This class also holds
the
* evaluation context, such as all available mixins and variables at any
given
* time.
*
* The `lessc_parser` class is only concerned with parsing its input.
*
* The `lessc_formatter` takes a CSS tree, and dumps it to a formatted
string,
* handling things like indentation.
*/
class lessc {
public static $VERSION = "v0.5.0";
public static $TRUE = array("keyword", "true");
public static $FALSE = array("keyword", "false");
protected $libFunctions = array();
protected $registeredVars = array();
protected $preserveComments = false;
public $vPrefix = '@'; // prefix of abstract properties
public $mPrefix = '$'; // prefix of abstract blocks
public $parentSelector = '&';
public $importDisabled = false;
public $importDir = '';
protected $numberPrecision = null;
protected $allParsedFiles = array();
// set to the parser that generated the current line when compiling
// so we know how to create error messages
protected $sourceParser = null;
protected $sourceLoc = null;
protected static $nextImportId = 0; // uniquely identify imports
// attempts to find the path of an import url, returns null for css
files
protected function findImport($url) {
foreach ((array)$this->importDir as $dir) {
$full = $dir.(substr($dir, -1) != '/' ? '/'
: '').$url;
if ($this->fileExists($file = $full.'.less') ||
$this->fileExists($file = $full)) {
return $file;
}
}
return null;
}
protected function fileExists($name) {
return is_file($name);
}
public static function compressList($items, $delim) {
if (!isset($items[1]) && isset($items[0])) return
$items[0];
else return array('list', $delim, $items);
}
public static function preg_quote($what) {
return preg_quote($what, '/');
}
protected function tryImport($importPath, $parentBlock, $out) {
if ($importPath[0] == "function" &&
$importPath[1] == "url") {
$importPath = $this->flattenList($importPath[2]);
}
$str = $this->coerceString($importPath);
if ($str === null) return false;
$url = $this->compileValue($this->lib_e($str));
// don't import if it ends in css
if (substr_compare($url, '.css', -4, 4) === 0) return
false;
$realPath = $this->findImport($url);
if ($realPath === null) return false;
if ($this->importDisabled) {
return array(false, "/* import disabled */");
}
if (isset($this->allParsedFiles[realpath($realPath)])) {
return array(false, null);
}
$this->addParsedFile($realPath);
$parser = $this->makeParser($realPath);
$root = $parser->parse(file_get_contents($realPath));
// set the parents of all the block props
foreach ($root->props as $prop) {
if ($prop[0] == "block") {
$prop[1]->parent = $parentBlock;
}
}
// copy mixins into scope, set their parents
// bring blocks from import into current block
// TODO: need to mark the source parser these came from this file
foreach ($root->children as $childName => $child) {
if (isset($parentBlock->children[$childName])) {
$parentBlock->children[$childName] = array_merge(
$parentBlock->children[$childName],
$child);
} else {
$parentBlock->children[$childName] = $child;
}
}
$pi = pathinfo($realPath);
$dir = $pi["dirname"];
list($top, $bottom) = $this->sortProps($root->props, true);
$this->compileImportedProps($top, $parentBlock, $out, $parser,
$dir);
return array(true, $bottom, $parser, $dir);
}
protected function compileImportedProps($props, $block, $out,
$sourceParser, $importDir) {
$oldSourceParser = $this->sourceParser;
$oldImport = $this->importDir;
// TODO: this is because the importDir api is stupid
$this->importDir = (array)$this->importDir;
array_unshift($this->importDir, $importDir);
foreach ($props as $prop) {
$this->compileProp($prop, $block, $out);
}
$this->importDir = $oldImport;
$this->sourceParser = $oldSourceParser;
}
/**
* Recursively compiles a block.
*
* A block is analogous to a CSS block in most cases. A single LESS
document
* is encapsulated in a block when parsed, but it does not have parent
tags
* so all of it's children appear on the root level when compiled.
*
* Blocks are made up of props and children.
*
* Props are property instructions, array tuples which describe an
action
* to be taken, eg. write a property, set a variable, mixin a block.
*
* The children of a block are just all the blocks that are defined
within.
* This is used to look up mixins when performing a mixin.
*
* Compiling the block involves pushing a fresh environment on the
stack,
* and iterating through the props, compiling each one.
*
* See lessc::compileProp()
*
*/
protected function compileBlock($block) {
switch ($block->type) {
case "root":
$this->compileRoot($block);
break;
case null:
$this->compileCSSBlock($block);
break;
case "media":
$this->compileMedia($block);
break;
case "directive":
$name = "@" . $block->name;
if (!empty($block->value)) {
$name .= " " .
$this->compileValue($this->reduce($block->value));
}
$this->compileNestedBlock($block, array($name));
break;
default:
$this->throwError("unknown block type:
$block->type\n");
}
}
protected function compileCSSBlock($block) {
$env = $this->pushEnv();
$selectors = $this->compileSelectors($block->tags);
$env->selectors = $this->multiplySelectors($selectors);
$out = $this->makeOutputBlock(null, $env->selectors);
$this->scope->children[] = $out;
$this->compileProps($block, $out);
$block->scope = $env; // mixins carry scope with them!
$this->popEnv();
}
protected function compileMedia($media) {
$env = $this->pushEnv($media);
$parentScope = $this->mediaParent($this->scope);
$query =
$this->compileMediaQuery($this->multiplyMedia($env));
$this->scope = $this->makeOutputBlock($media->type,
array($query));
$parentScope->children[] = $this->scope;
$this->compileProps($media, $this->scope);
if (count($this->scope->lines) > 0) {
$orphanSelelectors = $this->findClosestSelectors();
if (!is_null($orphanSelelectors)) {
$orphan = $this->makeOutputBlock(null,
$orphanSelelectors);
$orphan->lines = $this->scope->lines;
array_unshift($this->scope->children, $orphan);
$this->scope->lines = array();
}
}
$this->scope = $this->scope->parent;
$this->popEnv();
}
protected function mediaParent($scope) {
while (!empty($scope->parent)) {
if (!empty($scope->type) && $scope->type !=
"media") {
break;
}
$scope = $scope->parent;
}
return $scope;
}
protected function compileNestedBlock($block, $selectors) {
$this->pushEnv($block);
$this->scope = $this->makeOutputBlock($block->type,
$selectors);
$this->scope->parent->children[] = $this->scope;
$this->compileProps($block, $this->scope);
$this->scope = $this->scope->parent;
$this->popEnv();
}
protected function compileRoot($root) {
$this->pushEnv();
$this->scope = $this->makeOutputBlock($root->type);
$this->compileProps($root, $this->scope);
$this->popEnv();
}
protected function compileProps($block, $out) {
foreach ($this->sortProps($block->props) as $prop) {
$this->compileProp($prop, $block, $out);
}
$out->lines = $this->deduplicate($out->lines);
}
/**
* Deduplicate lines in a block. Comments are not deduplicated. If a
* duplicate rule is detected, the comments immediately preceding each
* occurence are consolidated.
*/
protected function deduplicate($lines) {
$unique = array();
$comments = array();
foreach ($lines as $line) {
if (strpos($line, '/*') === 0) {
$comments[] = $line;
continue;
}
if (!in_array($line, $unique)) {
$unique[] = $line;
}
array_splice($unique, array_search($line, $unique), 0,
$comments);
$comments = array();
}
return array_merge($unique, $comments);
}
protected function sortProps($props, $split = false) {
$vars = array();
$imports = array();
$other = array();
$stack = array();
foreach ($props as $prop) {
switch ($prop[0]) {
case "comment":
$stack[] = $prop;
break;
case "assign":
$stack[] = $prop;
if (isset($prop[1][0]) && $prop[1][0] ==
$this->vPrefix) {
$vars = array_merge($vars, $stack);
} else {
$other = array_merge($other, $stack);
}
$stack = array();
break;
case "import":
$id = self::$nextImportId++;
$prop[] = $id;
$stack[] = $prop;
$imports = array_merge($imports, $stack);
$other[] = array("import_mixin", $id);
$stack = array();
break;
default:
$stack[] = $prop;
$other = array_merge($other, $stack);
$stack = array();
break;
}
}
$other = array_merge($other, $stack);
if ($split) {
return array(array_merge($imports, $vars), $other);
} else {
return array_merge($imports, $vars, $other);
}
}
protected function compileMediaQuery($queries) {
$compiledQueries = array();
foreach ($queries as $query) {
$parts = array();
foreach ($query as $q) {
switch ($q[0]) {
case "mediaType":
$parts[] = implode(" ", array_slice($q, 1));
break;
case "mediaExp":
if (isset($q[2])) {
$parts[] = "($q[1]: " .
$this->compileValue($this->reduce($q[2]))
. ")";
} else {
$parts[] = "($q[1])";
}
break;
case "variable":
$parts[] =
$this->compileValue($this->reduce($q));
break;
}
}
if (count($parts) > 0) {
$compiledQueries[] = implode(" and ", $parts);
}
}
$out = "@media";
if (!empty($parts)) {
$out .= " " .
implode($this->formatter->selectorSeparator,
$compiledQueries);
}
return $out;
}
protected function multiplyMedia($env, $childQueries = null) {
if (is_null($env) ||
!empty($env->block->type) &&
$env->block->type != "media"
) {
return $childQueries;
}
// plain old block, skip
if (empty($env->block->type)) {
return $this->multiplyMedia($env->parent, $childQueries);
}
$out = array();
$queries = $env->block->queries;
if (is_null($childQueries)) {
$out = $queries;
} else {
foreach ($queries as $parent) {
foreach ($childQueries as $child) {
$out[] = array_merge($parent, $child);
}
}
}
return $this->multiplyMedia($env->parent, $out);
}
protected function expandParentSelectors(&$tag, $replace) {
$parts = explode("$&$", $tag);
$count = 0;
foreach ($parts as &$part) {
$part = str_replace($this->parentSelector, $replace, $part,
$c);
$count += $c;
}
$tag = implode($this->parentSelector, $parts);
return $count;
}
protected function findClosestSelectors() {
$env = $this->env;
$selectors = null;
while ($env !== null) {
if (isset($env->selectors)) {
$selectors = $env->selectors;
break;
}
$env = $env->parent;
}
return $selectors;
}
// multiply $selectors against the nearest selectors in env
protected function multiplySelectors($selectors) {
// find parent selectors
$parentSelectors = $this->findClosestSelectors();
if (is_null($parentSelectors)) {
// kill parent reference in top level selector
foreach ($selectors as &$s) {
$this->expandParentSelectors($s, "");
}
return $selectors;
}
$out = array();
foreach ($parentSelectors as $parent) {
foreach ($selectors as $child) {
$count = $this->expandParentSelectors($child, $parent);
// don't prepend the parent tag if & was used
if ($count > 0) {
$out[] = trim($child);
} else {
$out[] = trim($parent . ' ' . $child);
}
}
}
return $out;
}
// reduces selector expressions
protected function compileSelectors($selectors) {
$out = array();
foreach ($selectors as $s) {
if (is_array($s)) {
list(, $value) = $s;
$out[] =
trim($this->compileValue($this->reduce($value)));
} else {
$out[] = $s;
}
}
return $out;
}
protected function eq($left, $right) {
return $left == $right;
}
protected function patternMatch($block, $orderedArgs, $keywordArgs) {
// match the guards if it has them
// any one of the groups must have all its guards pass for a match
if (!empty($block->guards)) {
$groupPassed = false;
foreach ($block->guards as $guardGroup) {
foreach ($guardGroup as $guard) {
$this->pushEnv();
$this->zipSetArgs($block->args, $orderedArgs,
$keywordArgs);
$negate = false;
if ($guard[0] == "negate") {
$guard = $guard[1];
$negate = true;
}
$passed = $this->reduce($guard) == self::$TRUE;
if ($negate) $passed = !$passed;
$this->popEnv();
if ($passed) {
$groupPassed = true;
} else {
$groupPassed = false;
break;
}
}
if ($groupPassed) break;
}
if (!$groupPassed) {
return false;
}
}
if (empty($block->args)) {
return $block->isVararg || empty($orderedArgs) &&
empty($keywordArgs);
}
$remainingArgs = $block->args;
if ($keywordArgs) {
$remainingArgs = array();
foreach ($block->args as $arg) {
if ($arg[0] == "arg" &&
isset($keywordArgs[$arg[1]])) {
continue;
}
$remainingArgs[] = $arg;
}
}
$i = -1; // no args
// try to match by arity or by argument literal
foreach ($remainingArgs as $i => $arg) {
switch ($arg[0]) {
case "lit":
if (empty($orderedArgs[$i]) || !$this->eq($arg[1],
$orderedArgs[$i])) {
return false;
}
break;
case "arg":
// no arg and no default value
if (!isset($orderedArgs[$i]) && !isset($arg[2])) {
return false;
}
break;
case "rest":
$i--; // rest can be empty
break 2;
}
}
if ($block->isVararg) {
return true; // not having enough is handled above
} else {
$numMatched = $i + 1;
// greater than because default values always match
return $numMatched >= count($orderedArgs);
}
}
protected function patternMatchAll($blocks, $orderedArgs, $keywordArgs,
$skip = array()) {
$matches = null;
foreach ($blocks as $block) {
// skip seen blocks that don't have arguments
if (isset($skip[$block->id]) &&
!isset($block->args)) {
continue;
}
if ($this->patternMatch($block, $orderedArgs, $keywordArgs))
{
$matches[] = $block;
}
}
return $matches;
}
// attempt to find blocks matched by path and args
protected function findBlocks($searchIn, $path, $orderedArgs,
$keywordArgs, $seen = array()) {
if ($searchIn == null) return null;
if (isset($seen[$searchIn->id])) return null;
$seen[$searchIn->id] = true;
$name = $path[0];
if (isset($searchIn->children[$name])) {
$blocks = $searchIn->children[$name];
if (count($path) == 1) {
$matches = $this->patternMatchAll($blocks, $orderedArgs,
$keywordArgs, $seen);
if (!empty($matches)) {
// This will return all blocks that match in the
closest
// scope that has any matching block, like lessjs
return $matches;
}
} else {
$matches = array();
foreach ($blocks as $subBlock) {
$subMatches = $this->findBlocks($subBlock,
array_slice($path, 1), $orderedArgs, $keywordArgs,
$seen);
if (!is_null($subMatches)) {
foreach ($subMatches as $sm) {
$matches[] = $sm;
}
}
}
return count($matches) > 0 ? $matches : null;
}
}
if ($searchIn->parent === $searchIn) return null;
return $this->findBlocks($searchIn->parent, $path,
$orderedArgs, $keywordArgs, $seen);
}
// sets all argument names in $args to either the default value
// or the one passed in through $values
protected function zipSetArgs($args, $orderedValues, $keywordValues) {
$assignedValues = array();
$i = 0;
foreach ($args as $a) {
if ($a[0] == "arg") {
if (isset($keywordValues[$a[1]])) {
// has keyword arg
$value = $keywordValues[$a[1]];
} elseif (isset($orderedValues[$i])) {
// has ordered arg
$value = $orderedValues[$i];
$i++;
} elseif (isset($a[2])) {
// has default value
$value = $a[2];
} else {
$this->throwError("Failed to assign arg "
. $a[1]);
$value = null; // :(
}
$value = $this->reduce($value);
$this->set($a[1], $value);
$assignedValues[] = $value;
} else {
// a lit
$i++;
}
}
// check for a rest
$last = end($args);
if ($last[0] == "rest") {
$rest = array_slice($orderedValues, count($args) - 1);
$this->set($last[1],
$this->reduce(array("list", " ", $rest)));
}
// wow is this the only true use of PHP's + operator for
arrays?
$this->env->arguments = $assignedValues + $orderedValues;
}
// compile a prop and update $lines or $blocks appropriately
protected function compileProp($prop, $block, $out) {
// set error position context
$this->sourceLoc = isset($prop[-1]) ? $prop[-1] : -1;
switch ($prop[0]) {
case 'assign':
list(, $name, $value) = $prop;
if ($name[0] == $this->vPrefix) {
$this->set($name, $value);
} else {
$out->lines[] = $this->formatter->property($name,
$this->compileValue($this->reduce($value)));
}
break;
case 'block':
list(, $child) = $prop;
$this->compileBlock($child);
break;
case 'mixin':
list(, $path, $args, $suffix) = $prop;
$orderedArgs = array();
$keywordArgs = array();
foreach ((array)$args as $arg) {
$argval = null;
switch ($arg[0]) {
case "arg":
if (!isset($arg[2])) {
$orderedArgs[] =
$this->reduce(array("variable", $arg[1]));
} else {
$keywordArgs[$arg[1]] = $this->reduce($arg[2]);
}
break;
case "lit":
$orderedArgs[] = $this->reduce($arg[1]);
break;
default:
$this->throwError("Unknown arg type: " .
$arg[0]);
}
}
$mixins = $this->findBlocks($block, $path, $orderedArgs,
$keywordArgs);
if ($mixins === null) {
$this->throwError("{$prop[1][0]} is
undefined");
}
foreach ($mixins as $mixin) {
if ($mixin === $block && !$orderedArgs) {
continue;
}
$haveScope = false;
if (isset($mixin->parent->scope)) {
$haveScope = true;
$mixinParentEnv = $this->pushEnv();
$mixinParentEnv->storeParent =
$mixin->parent->scope;
}
$haveArgs = false;
if (isset($mixin->args)) {
$haveArgs = true;
$this->pushEnv();
$this->zipSetArgs($mixin->args, $orderedArgs,
$keywordArgs);
}
$oldParent = $mixin->parent;
if ($mixin != $block) $mixin->parent = $block;
foreach ($this->sortProps($mixin->props) as $subProp)
{
if ($suffix !== null &&
$subProp[0] == "assign" &&
is_string($subProp[1]) &&
$subProp[1][0] != $this->vPrefix
) {
$subProp[2] = array(
'list', ' ',
array($subProp[2], array('keyword',
$suffix))
);
}
$this->compileProp($subProp, $mixin, $out);
}
$mixin->parent = $oldParent;
if ($haveArgs) $this->popEnv();
if ($haveScope) $this->popEnv();
}
break;
case 'raw':
$out->lines[] = $prop[1];
break;
case "directive":
list(, $name, $value) = $prop;
$out->lines[] = "@$name " .
$this->compileValue($this->reduce($value)).';';
break;
case "comment":
$out->lines[] = $prop[1];
break;
case "import":
list(, $importPath, $importId) = $prop;
$importPath = $this->reduce($importPath);
if (!isset($this->env->imports)) {
$this->env->imports = array();
}
$result = $this->tryImport($importPath, $block, $out);
$this->env->imports[$importId] = $result === false ?
array(false, "@import " .
$this->compileValue($importPath).";") :
$result;
break;
case "import_mixin":
list(,$importId) = $prop;
$import = $this->env->imports[$importId];
if ($import[0] === false) {
if (isset($import[1])) {
$out->lines[] = $import[1];
}
} else {
list(, $bottom, $parser, $importDir) = $import;
$this->compileImportedProps($bottom, $block, $out,
$parser, $importDir);
}
break;
default:
$this->throwError("unknown op: {$prop[0]}\n");
}
}
/**
* Compiles a primitive value into a CSS property value.
*
* Values in lessphp are typed by being wrapped in arrays, their format
is
* typically:
*
* array(type, contents [, additional_contents]*)
*
* The input is expected to be reduced. This function will not work on
* things like expressions and variables.
*/
public function compileValue($value) {
switch ($value[0]) {
case 'list':
// [1] - delimiter
// [2] - array of values
return implode($value[1], array_map(array($this,
'compileValue'), $value[2]));
case 'raw_color':
if (!empty($this->formatter->compressColors)) {
return
$this->compileValue($this->coerceColor($value));
}
return $value[1];
case 'keyword':
// [1] - the keyword
return $value[1];
case 'number':
list(, $num, $unit) = $value;
// [1] - the number
// [2] - the unit
if ($this->numberPrecision !== null) {
$num = round($num, $this->numberPrecision);
}
return $num . $unit;
case 'string':
// [1] - contents of string (includes quotes)
list(, $delim, $content) = $value;
foreach ($content as &$part) {
if (is_array($part)) {
$part = $this->compileValue($part);
}
}
return $delim . implode($content) . $delim;
case 'color':
// [1] - red component (either number or a %)
// [2] - green component
// [3] - blue component
// [4] - optional alpha component
list(, $r, $g, $b) = $value;
$r = round($r);
$g = round($g);
$b = round($b);
if (count($value) == 5 && $value[4] != 1) { // rgba
return
'rgba('.$r.','.$g.','.$b.','.$value[4].')';
}
$h = sprintf("#%02x%02x%02x", $r, $g, $b);
if (!empty($this->formatter->compressColors)) {
// Converting hex color to short notation (e.g. #003399 to
#039)
if ($h[1] === $h[2] && $h[3] === $h[4] &&
$h[5] === $h[6]) {
$h = '#' . $h[1] . $h[3] . $h[5];
}
}
return $h;
case 'function':
list(, $name, $args) = $value;
return
$name.'('.$this->compileValue($args).')';
default: // assumed to be unit
$this->throwError("unknown value type:
$value[0]");
}
}
protected function lib_pow($args) {
list($base, $exp) = $this->assertArgs($args, 2,
"pow");
return pow($this->assertNumber($base),
$this->assertNumber($exp));
}
protected function lib_pi() {
return pi();
}
protected function lib_mod($args) {
list($a, $b) = $this->assertArgs($args, 2, "mod");
return $this->assertNumber($a) % $this->assertNumber($b);
}
protected function lib_tan($num) {
return tan($this->assertNumber($num));
}
protected function lib_sin($num) {
return sin($this->assertNumber($num));
}
protected function lib_cos($num) {
return cos($this->assertNumber($num));
}
protected function lib_atan($num) {
$num = atan($this->assertNumber($num));
return array("number", $num, "rad");
}
protected function lib_asin($num) {
$num = asin($this->assertNumber($num));
return array("number", $num, "rad");
}
protected function lib_acos($num) {
$num = acos($this->assertNumber($num));
return array("number", $num, "rad");
}
protected function lib_sqrt($num) {
return sqrt($this->assertNumber($num));
}
protected function lib_extract($value) {
list($list, $idx) = $this->assertArgs($value, 2,
"extract");
$idx = $this->assertNumber($idx);
// 1 indexed
if ($list[0] == "list" && isset($list[2][$idx -
1])) {
return $list[2][$idx - 1];
}
}
protected function lib_isnumber($value) {
return $this->toBool($value[0] == "number");
}
protected function lib_isstring($value) {
return $this->toBool($value[0] == "string");
}
protected function lib_iscolor($value) {
return $this->toBool($this->coerceColor($value));
}
protected function lib_iskeyword($value) {
return $this->toBool($value[0] == "keyword");
}
protected function lib_ispixel($value) {
return $this->toBool($value[0] == "number" &&
$value[2] == "px");
}
protected function lib_ispercentage($value) {
return $this->toBool($value[0] == "number" &&
$value[2] == "%");
}
protected function lib_isem($value) {
return $this->toBool($value[0] == "number" &&
$value[2] == "em");
}
protected function lib_isrem($value) {
return $this->toBool($value[0] == "number" &&
$value[2] == "rem");
}
protected function lib_rgbahex($color) {
$color = $this->coerceColor($color);
if (is_null($color)) {
$this->throwError("color expected for rgbahex");
}
return sprintf("#%02x%02x%02x%02x",
isset($color[4]) ? $color[4] * 255 : 255,
$color[1],
$color[2],
$color[3]
);
}
protected function lib_argb($color){
return $this->lib_rgbahex($color);
}
/**
* Given an url, decide whether to output a regular link or the
base64-encoded contents of the file
*
* @param array $value either an argument list (two strings) or a
single string
* @return string formatted url(), either as a link or
base64-encoded
*/
protected function lib_data_uri($value) {
$mime = ($value[0] === 'list') ? $value[2][0][2] : null;
$url = ($value[0] === 'list') ? $value[2][1][2][0] :
$value[2][0];
$fullpath = $this->findImport($url);
if ($fullpath && ($fsize = filesize($fullpath)) !== false)
{
// IE8 can't handle data uris larger than 32KB
if ($fsize/1024 < 32) {
if (is_null($mime)) {
if (class_exists('finfo')) { // php 5.3+
$finfo = new finfo(FILEINFO_MIME);
$mime = explode('; ',
$finfo->file($fullpath));
$mime = $mime[0];
} elseif
(function_exists('mime_content_type')) { // PHP 5.2
$mime = mime_content_type($fullpath);
}
}
if (!is_null($mime)) // fallback if the mime type is still
unknown
$url = sprintf('data:%s;base64,%s', $mime,
base64_encode(file_get_contents($fullpath)));
}
}
return 'url("'.$url.'")';
}
// utility func to unquote a string
protected function lib_e($arg) {
switch ($arg[0]) {
case "list":
$items = $arg[2];
if (isset($items[0])) {
return $this->lib_e($items[0]);
}
$this->throwError("unrecognised input");
case "string":
$arg[1] = "";
return $arg;
case "keyword":
return $arg;
default:
return array("keyword",
$this->compileValue($arg));
}
}
protected function lib__sprintf($args) {
if ($args[0] != "list") return $args;
$values = $args[2];
$string = array_shift($values);
$template = $this->compileValue($this->lib_e($string));
$i = 0;
if (preg_match_all('/%[dsa]/', $template, $m)) {
foreach ($m[0] as $match) {
$val = isset($values[$i]) ?
$this->reduce($values[$i]) :
array('keyword', '');
// lessjs compat, renders fully expanded color, not raw
color
if ($color = $this->coerceColor($val)) {
$val = $color;
}
$i++;
$rep = $this->compileValue($this->lib_e($val));
$template =
preg_replace('/'.self::preg_quote($match).'/',
$rep, $template, 1);
}
}
$d = $string[0] == "string" ? $string[1] :
'"';
return array("string", $d, array($template));
}
protected function lib_floor($arg) {
$value = $this->assertNumber($arg);
return array("number", floor($value), $arg[2]);
}
protected function lib_ceil($arg) {
$value = $this->assertNumber($arg);
return array("number", ceil($value), $arg[2]);
}
protected function lib_round($arg) {
if ($arg[0] != "list") {
$value = $this->assertNumber($arg);
return array("number", round($value), $arg[2]);
} else {
$value = $this->assertNumber($arg[2][0]);
$precision = $this->assertNumber($arg[2][1]);
return array("number", round($value, $precision),
$arg[2][0][2]);
}
}
protected function lib_unit($arg) {
if ($arg[0] == "list") {
list($number, $newUnit) = $arg[2];
return array("number",
$this->assertNumber($number),
$this->compileValue($this->lib_e($newUnit)));
} else {
return array("number", $this->assertNumber($arg),
"");
}
}
/**
* Helper function to get arguments for color manipulation functions.
* takes a list that contains a color like thing and a percentage
*/
public function colorArgs($args) {
if ($args[0] != 'list' || count($args[2]) < 2) {
return array(array('color', 0, 0, 0), 0);
}
list($color, $delta) = $args[2];
$color = $this->assertColor($color);
$delta = floatval($delta[1]);
return array($color, $delta);
}
protected function lib_darken($args) {
list($color, $delta) = $this->colorArgs($args);
$hsl = $this->toHSL($color);
$hsl[3] = $this->clamp($hsl[3] - $delta, 100);
return $this->toRGB($hsl);
}
protected function lib_lighten($args) {
list($color, $delta) = $this->colorArgs($args);
$hsl = $this->toHSL($color);
$hsl[3] = $this->clamp($hsl[3] + $delta, 100);
return $this->toRGB($hsl);
}
protected function lib_saturate($args) {
list($color, $delta) = $this->colorArgs($args);
$hsl = $this->toHSL($color);
$hsl[2] = $this->clamp($hsl[2] + $delta, 100);
return $this->toRGB($hsl);
}
protected function lib_desaturate($args) {
list($color, $delta) = $this->colorArgs($args);
$hsl = $this->toHSL($color);
$hsl[2] = $this->clamp($hsl[2] - $delta, 100);
return $this->toRGB($hsl);
}
protected function lib_spin($args) {
list($color, $delta) = $this->colorArgs($args);
$hsl = $this->toHSL($color);
$hsl[1] = $hsl[1] + $delta % 360;
if ($hsl[1] < 0) {
$hsl[1] += 360;
}
return $this->toRGB($hsl);
}
protected function lib_fadeout($args) {
list($color, $delta) = $this->colorArgs($args);
$color[4] = $this->clamp((isset($color[4]) ? $color[4] : 1) -
$delta/100);
return $color;
}
protected function lib_fadein($args) {
list($color, $delta) = $this->colorArgs($args);
$color[4] = $this->clamp((isset($color[4]) ? $color[4] : 1) +
$delta/100);
return $color;
}
protected function lib_hue($color) {
$hsl = $this->toHSL($this->assertColor($color));
return round($hsl[1]);
}
protected function lib_saturation($color) {
$hsl = $this->toHSL($this->assertColor($color));
return round($hsl[2]);
}
protected function lib_lightness($color) {
$hsl = $this->toHSL($this->assertColor($color));
return round($hsl[3]);
}
// get the alpha of a color
// defaults to 1 for non-colors or colors without an alpha
protected function lib_alpha($value) {
if (!is_null($color = $this->coerceColor($value))) {
return isset($color[4]) ? $color[4] : 1;
}
}
// set the alpha of the color
protected function lib_fade($args) {
list($color, $alpha) = $this->colorArgs($args);
$color[4] = $this->clamp($alpha / 100.0);
return $color;
}
protected function lib_percentage($arg) {
$num = $this->assertNumber($arg);
return array("number", $num*100, "%");
}
/**
* Mix color with white in variable proportion.
*
* It is the same as calling `mix(#ffffff, @color, @weight)`.
*
* tint(@color, [@weight: 50%]);
*
* http://lesscss.org/functions/#color-operations-tint
*
* @return array Color
*/
protected function lib_tint($args) {
$white = ['color', 255, 255, 255];
if ($args[0] == 'color') {
return $this->lib_mix([ 'list', ',',
[$white, $args] ]);
} elseif ($args[0] == "list" && count($args[2])
== 2) {
return $this->lib_mix([ $args[0], $args[1], [$white,
$args[2][0], $args[2][1]] ]);
} else {
$this->throwError("tint expects (color, weight)");
}
}
/**
* Mix color with black in variable proportion.
*
* It is the same as calling `mix(#000000, @color, @weight)`
*
* shade(@color, [@weight: 50%]);
*
* http://lesscss.org/functions/#color-operations-shade
*
* @return array Color
*/
protected function lib_shade($args) {
$black = ['color', 0, 0, 0];
if ($args[0] == 'color') {
return $this->lib_mix([ 'list', ',',
[$black, $args] ]);
} elseif ($args[0] == "list" && count($args[2])
== 2) {
return $this->lib_mix([ $args[0], $args[1], [$black,
$args[2][0], $args[2][1]] ]);
} else {
$this->throwError("shade expects (color,
weight)");
}
}
// mixes two colors by weight
// mix(@color1, @color2, [@weight: 50%]);
//
http://sass-lang.com/docs/yardoc/Sass/Script/Functions.html#mix-instance_method
protected function lib_mix($args) {
if ($args[0] != "list" || count($args[2]) < 2)
$this->throwError("mix expects (color1, color2,
weight)");
list($first, $second) = $args[2];
$first = $this->assertColor($first);
$second = $this->assertColor($second);
$first_a = $this->lib_alpha($first);
$second_a = $this->lib_alpha($second);
if (isset($args[2][2])) {
$weight = $args[2][2][1] / 100.0;
} else {
$weight = 0.5;
}
$w = $weight * 2 - 1;
$a = $first_a - $second_a;
$w1 = (($w * $a == -1 ? $w : ($w + $a)/(1 + $w * $a)) + 1) / 2.0;
$w2 = 1.0 - $w1;
$new = array('color',
$w1 * $first[1] + $w2 * $second[1],
$w1 * $first[2] + $w2 * $second[2],
$w1 * $first[3] + $w2 * $second[3],
);
if ($first_a != 1.0 || $second_a != 1.0) {
$new[] = $first_a * $weight + $second_a * ($weight - 1);
}
return $this->fixColor($new);
}
protected function lib_contrast($args) {
$darkColor = array('color', 0, 0, 0);
$lightColor = array('color', 255, 255, 255);
$threshold = 0.43;
if ( $args[0] == 'list' ) {
$inputColor = ( isset($args[2][0]) ) ?
$this->assertColor($args[2][0]) : $lightColor;
$darkColor = ( isset($args[2][1]) ) ?
$this->assertColor($args[2][1]) : $darkColor;
$lightColor = ( isset($args[2][2]) ) ?
$this->assertColor($args[2][2]) : $lightColor;
$threshold = ( isset($args[2][3]) ) ?
$this->assertNumber($args[2][3]) : $threshold;
}
else {
$inputColor = $this->assertColor($args);
}
$inputColor = $this->coerceColor($inputColor);
$darkColor = $this->coerceColor($darkColor);
$lightColor = $this->coerceColor($lightColor);
//Figure out which is actually light and dark!
if ( $this->toLuma($darkColor) >
$this->toLuma($lightColor) ) {
$t = $lightColor;
$lightColor = $darkColor;
$darkColor = $t;
}
$inputColor_alpha = $this->lib_alpha($inputColor);
if ( ( $this->toLuma($inputColor) * $inputColor_alpha) <
$threshold) {
return $lightColor;
}
return $darkColor;
}
private function toLuma($color) {
list(, $r, $g, $b) = $this->coerceColor($color);
$r = $r / 255;
$g = $g / 255;
$b = $b / 255;
$r = ($r <= 0.03928) ? $r / 12.92 : pow((($r + 0.055) / 1.055),
2.4);
$g = ($g <= 0.03928) ? $g / 12.92 : pow((($g + 0.055) / 1.055),
2.4);
$b = ($b <= 0.03928) ? $b / 12.92 : pow((($b + 0.055) / 1.055),
2.4);
return (0.2126 * $r) + (0.7152 * $g) + (0.0722 * $b);
}
protected function lib_luma($color) {
return array("number", round($this->toLuma($color) *
100, 8), "%");
}
public function assertColor($value, $error = "expected color
value") {
$color = $this->coerceColor($value);
if (is_null($color)) $this->throwError($error);
return $color;
}
public function assertNumber($value, $error = "expecting
number") {
if ($value[0] == "number") return $value[1];
$this->throwError($error);
}
public function assertArgs($value, $expectedArgs, $name = "")
{
if ($expectedArgs == 1) {
return $value;
} else {
if ($value[0] !== "list" || $value[1] !=
",") $this->throwError("expecting list");
$values = $value[2];
$numValues = count($values);
if ($expectedArgs != $numValues) {
if ($name) {
$name = $name . ": ";
}
$this->throwError("${name}expecting $expectedArgs
arguments, got $numValues");
}
return $values;
}
}
protected function toHSL($color) {
if ($color[0] === 'hsl') {
return $color;
}
$r = $color[1] / 255;
$g = $color[2] / 255;
$b = $color[3] / 255;
$min = min($r, $g, $b);
$max = max($r, $g, $b);
$L = ($min + $max) / 2;
if ($min == $max) {
$S = $H = 0;
} else {
if ($L < 0.5) {
$S = ($max - $min) / ($max + $min);
} else {
$S = ($max - $min) / (2.0 - $max - $min);
}
if ($r == $max) {
$H = ($g - $b) / ($max - $min);
} elseif ($g == $max) {
$H = 2.0 + ($b - $r) / ($max - $min);
} elseif ($b == $max) {
$H = 4.0 + ($r - $g) / ($max - $min);
}
}
$out = array('hsl',
($H < 0 ? $H + 6 : $H)*60,
$S * 100,
$L * 100,
);
if (count($color) > 4) {
// copy alpha
$out[] = $color[4];
}
return $out;
}
protected function toRGB_helper($comp, $temp1, $temp2) {
if ($comp < 0) {
$comp += 1.0;
} elseif ($comp > 1) {
$comp -= 1.0;
}
if (6 * $comp < 1) {
return $temp1 + ($temp2 - $temp1) * 6 * $comp;
}
if (2 * $comp < 1) {
return $temp2;
}
if (3 * $comp < 2) {
return $temp1 + ($temp2 - $temp1)*((2/3) - $comp) * 6;
}
return $temp1;
}
/**
* Converts a hsl array into a color value in rgb.
* Expects H to be in range of 0 to 360, S and L in 0 to 100
*/
protected function toRGB($color) {
if ($color[0] === 'color') {
return $color;
}
$H = $color[1] / 360;
$S = $color[2] / 100;
$L = $color[3] / 100;
if ($S == 0) {
$r = $g = $b = $L;
} else {
$temp2 = $L < 0.5 ?
$L * (1.0 + $S) :
$L + $S - $L * $S;
$temp1 = 2.0 * $L - $temp2;
$r = $this->toRGB_helper($H + 1/3, $temp1, $temp2);
$g = $this->toRGB_helper($H, $temp1, $temp2);
$b = $this->toRGB_helper($H - 1/3, $temp1, $temp2);
}
// $out = array('color', round($r*255), round($g*255),
round($b*255));
$out = array('color', $r*255, $g*255, $b*255);
if (count($color) > 4) {
// copy alpha
$out[] = $color[4];
}
return $out;
}
protected function clamp($v, $max = 1, $min = 0) {
return min($max, max($min, $v));
}
/**
* Convert the rgb, rgba, hsl color literals of function type
* as returned by the parser into values of color type.
*/
protected function funcToColor($func) {
$fname = $func[1];
if ($func[2][0] != 'list') {
// need a list of arguments
return false;
}
$rawComponents = $func[2][2];
if ($fname == 'hsl' || $fname == 'hsla') {
$hsl = array('hsl');
$i = 0;
foreach ($rawComponents as $c) {
$val = $this->reduce($c);
$val = isset($val[1]) ? floatval($val[1]) : 0;
if ($i == 0) {
$clamp = 360;
} elseif ($i < 3) {
$clamp = 100;
} else {
$clamp = 1;
}
$hsl[] = $this->clamp($val, $clamp);
$i++;
}
while (count($hsl) < 4) {
$hsl[] = 0;
}
return $this->toRGB($hsl);
} elseif ($fname == 'rgb' || $fname == 'rgba')
{
$components = array();
$i = 1;
foreach ($rawComponents as $c) {
$c = $this->reduce($c);
if ($i < 4) {
if ($c[0] == "number" && $c[2] ==
"%") {
$components[] = 255 * ($c[1] / 100);
} else {
$components[] = floatval($c[1]);
}
} elseif ($i == 4) {
if ($c[0] == "number" && $c[2] ==
"%") {
$components[] = 1.0 * ($c[1] / 100);
} else {
$components[] = floatval($c[1]);
}
} else break;
$i++;
}
while (count($components) < 3) {
$components[] = 0;
}
array_unshift($components, 'color');
return $this->fixColor($components);
}
return false;
}
protected function reduce($value, $forExpression = false) {
switch ($value[0]) {
case "interpolate":
$reduced = $this->reduce($value[1]);
$var = $this->compileValue($reduced);
$res = $this->reduce(array("variable",
$this->vPrefix . $var));
if ($res[0] == "raw_color") {
$res = $this->coerceColor($res);
}
if (empty($value[2])) $res = $this->lib_e($res);
return $res;
case "variable":
$key = $value[1];
if (is_array($key)) {
$key = $this->reduce($key);
$key = $this->vPrefix .
$this->compileValue($this->lib_e($key));
}
$seen =& $this->env->seenNames;
if (!empty($seen[$key])) {
$this->throwError("infinite loop detected:
$key");
}
$seen[$key] = true;
$out = $this->reduce($this->get($key));
$seen[$key] = false;
return $out;
case "list":
foreach ($value[2] as &$item) {
$item = $this->reduce($item, $forExpression);
}
return $value;
case "expression":
return $this->evaluate($value);
case "string":
foreach ($value[2] as &$part) {
if (is_array($part)) {
$strip = $part[0] == "variable";
$part = $this->reduce($part);
if ($strip) $part = $this->lib_e($part);
}
}
return $value;
case "escape":
list(,$inner) = $value;
return $this->lib_e($this->reduce($inner));
case "function":
$color = $this->funcToColor($value);
if ($color) return $color;
list(, $name, $args) = $value;
if ($name == "%") $name = "_sprintf";
$f = isset($this->libFunctions[$name]) ?
$this->libFunctions[$name] : array($this,
'lib_'.str_replace('-', '_', $name));
if (is_callable($f)) {
if ($args[0] == 'list')
$args = self::compressList($args[2], $args[1]);
$ret = call_user_func($f, $this->reduce($args, true),
$this);
if (is_null($ret)) {
return array("string", "", array(
$name, "(", $args, ")"
));
}
// convert to a typed value if the result is a php
primitive
if (is_numeric($ret)) {
$ret = array('number', $ret, "");
} elseif (!is_array($ret)) {
$ret = array('keyword', $ret);
}
return $ret;
}
// plain function, reduce args
$value[2] = $this->reduce($value[2]);
return $value;
case "unary":
list(, $op, $exp) = $value;
$exp = $this->reduce($exp);
if ($exp[0] == "number") {
switch ($op) {
case "+":
return $exp;
case "-":
$exp[1] *= -1;
return $exp;
}
}
return array("string", "", array($op,
$exp));
}
if ($forExpression) {
switch ($value[0]) {
case "keyword":
if ($color = $this->coerceColor($value)) {
return $color;
}
break;
case "raw_color":
return $this->coerceColor($value);
}
}
return $value;
}
// coerce a value for use in color operation
protected function coerceColor($value) {
switch ($value[0]) {
case 'color': return $value;
case 'raw_color':
$c = array("color", 0, 0, 0);
$colorStr = substr($value[1], 1);
$num = hexdec($colorStr);
$width = strlen($colorStr) == 3 ? 16 : 256;
for ($i = 3; $i > 0; $i--) { // 3 2 1
$t = $num % $width;
$num /= $width;
$c[$i] = $t * (256/$width) + $t * floor(16/$width);
}
return $c;
case 'keyword':
$name = $value[1];
if (isset(self::$cssColors[$name])) {
$rgba = explode(',',
self::$cssColors[$name]);
if (isset($rgba[3])) {
return array('color', $rgba[0], $rgba[1],
$rgba[2], $rgba[3]);
}
return array('color', $rgba[0], $rgba[1],
$rgba[2]);
}
return null;
}
}
// make something string like into a string
protected function coerceString($value) {
switch ($value[0]) {
case "string":
return $value;
case "keyword":
return array("string", "",
array($value[1]));
}
return null;
}
// turn list of length 1 into value type
protected function flattenList($value) {
if ($value[0] == "list" && count($value[2]) == 1)
{
return $this->flattenList($value[2][0]);
}
return $value;
}
public function toBool($a) {
return $a ? self::$TRUE : self::$FALSE;
}
// evaluate an expression
protected function evaluate($exp) {
list(, $op, $left, $right, $whiteBefore, $whiteAfter) = $exp;
$left = $this->reduce($left, true);
$right = $this->reduce($right, true);
if ($leftColor = $this->coerceColor($left)) {
$left = $leftColor;
}
if ($rightColor = $this->coerceColor($right)) {
$right = $rightColor;
}
$ltype = $left[0];
$rtype = $right[0];
// operators that work on all types
if ($op == "and") {
return $this->toBool($left == self::$TRUE && $right
== self::$TRUE);
}
if ($op == "=") {
return $this->toBool($this->eq($left, $right) );
}
if ($op == "+" && !is_null($str =
$this->stringConcatenate($left, $right))) {
return $str;
}
// type based operators
$fname = "op_${ltype}_${rtype}";
if (is_callable(array($this, $fname))) {
$out = $this->$fname($op, $left, $right);
if (!is_null($out)) return $out;
}
// make the expression look it did before being parsed
$paddedOp = $op;
if ($whiteBefore) {
$paddedOp = " " . $paddedOp;
}
if ($whiteAfter) {
$paddedOp .= " ";
}
return array("string", "", array($left,
$paddedOp, $right));
}
protected function stringConcatenate($left, $right) {
if ($strLeft = $this->coerceString($left)) {
if ($right[0] == "string") {
$right[1] = "";
}
$strLeft[2][] = $right;
return $strLeft;
}
if ($strRight = $this->coerceString($right)) {
array_unshift($strRight[2], $left);
return $strRight;
}
}
// make sure a color's components don't go out of bounds
protected function fixColor($c) {
foreach (range(1, 3) as $i) {
if ($c[$i] < 0) $c[$i] = 0;
if ($c[$i] > 255) $c[$i] = 255;
}
return $c;
}
protected function op_number_color($op, $lft, $rgt) {
if ($op == '+' || $op == '*') {
return $this->op_color_number($op, $rgt, $lft);
}
}
protected function op_color_number($op, $lft, $rgt) {
if ($rgt[0] == '%') $rgt[1] /= 100;
return $this->op_color_color($op, $lft,
array_fill(1, count($lft) - 1, $rgt[1]));
}
protected function op_color_color($op, $left, $right) {
$out = array('color');
$max = count($left) > count($right) ? count($left) :
count($right);
foreach (range(1, $max - 1) as $i) {
$lval = isset($left[$i]) ? $left[$i] : 0;
$rval = isset($right[$i]) ? $right[$i] : 0;
switch ($op) {
case '+':
$out[] = $lval + $rval;
break;
case '-':
$out[] = $lval - $rval;
break;
case '*':
$out[] = $lval * $rval;
break;
case '%':
$out[] = $lval % $rval;
break;
case '/':
if ($rval == 0) {
$this->throwError("evaluate error: can't
divide by zero");
}
$out[] = $lval / $rval;
break;
default:
$this->throwError('evaluate error: color op number
failed on op '.$op);
}
}
return $this->fixColor($out);
}
public function lib_red($color){
$color = $this->coerceColor($color);
if (is_null($color)) {
$this->throwError('color expected for red()');
}
return $color[1];
}
public function lib_green($color){
$color = $this->coerceColor($color);
if (is_null($color)) {
$this->throwError('color expected for green()');
}
return $color[2];
}
public function lib_blue($color){
$color = $this->coerceColor($color);
if (is_null($color)) {
$this->throwError('color expected for blue()');
}
return $color[3];
}
// operator on two numbers
protected function op_number_number($op, $left, $right) {
$unit = empty($left[2]) ? $right[2] : $left[2];
$value = 0;
switch ($op) {
case '+':
$value = $left[1] + $right[1];
break;
case '*':
$value = $left[1] * $right[1];
break;
case '-':
$value = $left[1] - $right[1];
break;
case '%':
$value = $left[1] % $right[1];
break;
case '/':
if ($right[1] == 0) $this->throwError('parse error:
divide by zero');
$value = $left[1] / $right[1];
break;
case '<':
return $this->toBool($left[1] < $right[1]);
case '>':
return $this->toBool($left[1] > $right[1]);
case '>=':
return $this->toBool($left[1] >= $right[1]);
case '=<':
return $this->toBool($left[1] <= $right[1]);
default:
$this->throwError('parse error: unknown number
operator: '.$op);
}
return array("number", $value, $unit);
}
/* environment functions */
protected function makeOutputBlock($type, $selectors = null) {
$b = new stdclass;
$b->lines = array();
$b->children = array();
$b->selectors = $selectors;
$b->type = $type;
$b->parent = $this->scope;
return $b;
}
// the state of execution
protected function pushEnv($block = null) {
$e = new stdclass;
$e->parent = $this->env;
$e->store = array();
$e->block = $block;
$this->env = $e;
return $e;
}
// pop something off the stack
protected function popEnv() {
$old = $this->env;
$this->env = $this->env->parent;
return $old;
}
// set something in the current env
protected function set($name, $value) {
$this->env->store[$name] = $value;
}
// get the highest occurrence entry for a name
protected function get($name) {
$current = $this->env;
$isArguments = $name == $this->vPrefix . 'arguments';
while ($current) {
if ($isArguments && isset($current->arguments)) {
return array('list', ' ',
$current->arguments);
}
if (isset($current->store[$name])) {
return $current->store[$name];
}
$current = isset($current->storeParent) ?
$current->storeParent :
$current->parent;
}
$this->throwError("variable $name is undefined");
}
// inject array of unparsed strings into environment as variables
protected function injectVariables($args) {
$this->pushEnv();
$parser = new lessc_parser($this, __METHOD__);
foreach ($args as $name => $strValue) {
if ($name[0] !== '@') {
$name = '@' . $name;
}
$parser->count = 0;
$parser->buffer = (string)$strValue;
if (!$parser->propertyValue($value)) {
throw new Exception("failed to parse passed in
variable $name: $strValue");
}
$this->set($name, $value);
}
}
/**
* Initialize any static state, can initialize parser for a file
* $opts isn't used yet
*/
public function __construct($fname = null) {
if ($fname !== null) {
// used for deprecated parse method
$this->_parseFile = $fname;
}
}
public function compile($string, $name = null) {
$locale = setlocale(LC_NUMERIC, 0);
setlocale(LC_NUMERIC, "C");
$this->parser = $this->makeParser($name);
$root = $this->parser->parse($string);
$this->env = null;
$this->scope = null;
$this->formatter = $this->newFormatter();
if (!empty($this->registeredVars)) {
$this->injectVariables($this->registeredVars);
}
$this->sourceParser = $this->parser; // used for error
messages
$this->compileBlock($root);
ob_start();
$this->formatter->block($this->scope);
$out = ob_get_clean();
setlocale(LC_NUMERIC, $locale);
return $out;
}
public function compileFile($fname, $outFname = null) {
if (!is_readable($fname)) {
throw new Exception('load error: failed to find
'.$fname);
}
$pi = pathinfo($fname);
$oldImport = $this->importDir;
$this->importDir = (array)$this->importDir;
$this->importDir[] = $pi['dirname'].'/';
$this->addParsedFile($fname);
$out = $this->compile(file_get_contents($fname), $fname);
$this->importDir = $oldImport;
if ($outFname !== null) {
return file_put_contents($outFname, $out);
}
return $out;
}
// compile only if changed input has changed or output doesn't
exist
public function checkedCompile($in, $out) {
if (!is_file($out) || filemtime($in) > filemtime($out)) {
$this->compileFile($in, $out);
return true;
}
return false;
}
/**
* Execute lessphp on a .less file or a lessphp cache structure
*
* The lessphp cache structure contains information about a specific
* less file having been parsed. It can be used as a hint for future
* calls to determine whether or not a rebuild is required.
*
* The cache structure contains two important keys that may be used
* externally:
*
* compiled: The final compiled CSS
* updated: The time (in seconds) the CSS was last compiled
*
* The cache structure is a plain-ol' PHP associative array and
can
* be serialized and unserialized without a hitch.
*
* @param mixed $in Input
* @param bool $force Force rebuild?
* @return array lessphp cache structure
*/
public function cachedCompile($in, $force = false) {
// assume no root
$root = null;
if (is_string($in)) {
$root = $in;
} elseif (is_array($in) && isset($in['root'])) {
if ($force || !isset($in['files'])) {
// If we are forcing a recompile or if for some reason the
// structure does not contain any file information we
should
// specify the root to trigger a rebuild.
$root = $in['root'];
} elseif (isset($in['files']) &&
is_array($in['files'])) {
foreach ($in['files'] as $fname => $ftime) {
if (!file_exists($fname) || filemtime($fname) >
$ftime) {
// One of the files we knew about previously has
changed
// so we should look at our incoming root again.
$root = $in['root'];
break;
}
}
}
} else {
// TODO: Throw an exception? We got neither a string nor
something
// that looks like a compatible lessphp cache structure.
return null;
}
if ($root !== null) {
// If we have a root value which means we should rebuild.
$out = array();
$out['root'] = $root;
$out['compiled'] = $this->compileFile($root);
$out['files'] = $this->allParsedFiles();
$out['updated'] = time();
return $out;
} else {
// No changes, pass back the structure
// we were given initially.
return $in;
}
}
// parse and compile buffer
// This is deprecated
public function parse($str = null, $initialVariables = null) {
if (is_array($str)) {
$initialVariables = $str;
$str = null;
}
$oldVars = $this->registeredVars;
if ($initialVariables !== null) {
$this->setVariables($initialVariables);
}
if ($str == null) {
if (empty($this->_parseFile)) {
throw new exception("nothing to parse");
}
$out = $this->compileFile($this->_parseFile);
} else {
$out = $this->compile($str);
}
$this->registeredVars = $oldVars;
return $out;
}
protected function makeParser($name) {
$parser = new lessc_parser($this, $name);
$parser->writeComments = $this->preserveComments;
return $parser;
}
public function setFormatter($name) {
$this->formatterName = $name;
}
protected function newFormatter() {
$className = "lessc_formatter_lessjs";
if (!empty($this->formatterName)) {
if (!is_string($this->formatterName))
return $this->formatterName;
$className =
"lessc_formatter_$this->formatterName";
}
return new $className;
}
public function setPreserveComments($preserve) {
$this->preserveComments = $preserve;
}
public function registerFunction($name, $func) {
$this->libFunctions[$name] = $func;
}
public function unregisterFunction($name) {
unset($this->libFunctions[$name]);
}
public function setVariables($variables) {
$this->registeredVars = array_merge($this->registeredVars,
$variables);
}
public function unsetVariable($name) {
unset($this->registeredVars[$name]);
}
public function setImportDir($dirs) {
$this->importDir = (array)$dirs;
}
public function addImportDir($dir) {
$this->importDir = (array)$this->importDir;
$this->importDir[] = $dir;
}
public function allParsedFiles() {
return $this->allParsedFiles;
}
public function addParsedFile($file) {
$this->allParsedFiles[realpath($file)] = filemtime($file);
}
/**
* Uses the current value of $this->count to show line and line
number
*/
public function throwError($msg = null) {
if ($this->sourceLoc >= 0) {
$this->sourceParser->throwError($msg,
$this->sourceLoc);
}
throw new exception($msg);
}
// compile file $in to file $out if $in is newer than $out
// returns true when it compiles, false otherwise
public static function ccompile($in, $out, $less = null) {
if ($less === null) {
$less = new self;
}
return $less->checkedCompile($in, $out);
}
public static function cexecute($in, $force = false, $less = null) {
if ($less === null) {
$less = new self;
}
return $less->cachedCompile($in, $force);
}
protected static $cssColors = array(
'aliceblue' => '240,248,255',
'antiquewhite' => '250,235,215',
'aqua' => '0,255,255',
'aquamarine' => '127,255,212',
'azure' => '240,255,255',
'beige' => '245,245,220',
'bisque' => '255,228,196',
'black' => '0,0,0',
'blanchedalmond' => '255,235,205',
'blue' => '0,0,255',
'blueviolet' => '138,43,226',
'brown' => '165,42,42',
'burlywood' => '222,184,135',
'cadetblue' => '95,158,160',
'chartreuse' => '127,255,0',
'chocolate' => '210,105,30',
'coral' => '255,127,80',
'cornflowerblue' => '100,149,237',
'cornsilk' => '255,248,220',
'crimson' => '220,20,60',
'cyan' => '0,255,255',
'darkblue' => '0,0,139',
'darkcyan' => '0,139,139',
'darkgoldenrod' => '184,134,11',
'darkgray' => '169,169,169',
'darkgreen' => '0,100,0',
'darkgrey' => '169,169,169',
'darkkhaki' => '189,183,107',
'darkmagenta' => '139,0,139',
'darkolivegreen' => '85,107,47',
'darkorange' => '255,140,0',
'darkorchid' => '153,50,204',
'darkred' => '139,0,0',
'darksalmon' => '233,150,122',
'darkseagreen' => '143,188,143',
'darkslateblue' => '72,61,139',
'darkslategray' => '47,79,79',
'darkslategrey' => '47,79,79',
'darkturquoise' => '0,206,209',
'darkviolet' => '148,0,211',
'deeppink' => '255,20,147',
'deepskyblue' => '0,191,255',
'dimgray' => '105,105,105',
'dimgrey' => '105,105,105',
'dodgerblue' => '30,144,255',
'firebrick' => '178,34,34',
'floralwhite' => '255,250,240',
'forestgreen' => '34,139,34',
'fuchsia' => '255,0,255',
'gainsboro' => '220,220,220',
'ghostwhite' => '248,248,255',
'gold' => '255,215,0',
'goldenrod' => '218,165,32',
'gray' => '128,128,128',
'green' => '0,128,0',
'greenyellow' => '173,255,47',
'grey' => '128,128,128',
'honeydew' => '240,255,240',
'hotpink' => '255,105,180',
'indianred' => '205,92,92',
'indigo' => '75,0,130',
'ivory' => '255,255,240',
'khaki' => '240,230,140',
'lavender' => '230,230,250',
'lavenderblush' => '255,240,245',
'lawngreen' => '124,252,0',
'lemonchiffon' => '255,250,205',
'lightblue' => '173,216,230',
'lightcoral' => '240,128,128',
'lightcyan' => '224,255,255',
'lightgoldenrodyellow' => '250,250,210',
'lightgray' => '211,211,211',
'lightgreen' => '144,238,144',
'lightgrey' => '211,211,211',
'lightpink' => '255,182,193',
'lightsalmon' => '255,160,122',
'lightseagreen' => '32,178,170',
'lightskyblue' => '135,206,250',
'lightslategray' => '119,136,153',
'lightslategrey' => '119,136,153',
'lightsteelblue' => '176,196,222',
'lightyellow' => '255,255,224',
'lime' => '0,255,0',
'limegreen' => '50,205,50',
'linen' => '250,240,230',
'magenta' => '255,0,255',
'maroon' => '128,0,0',
'mediumaquamarine' => '102,205,170',
'mediumblue' => '0,0,205',
'mediumorchid' => '186,85,211',
'mediumpurple' => '147,112,219',
'mediumseagreen' => '60,179,113',
'mediumslateblue' => '123,104,238',
'mediumspringgreen' => '0,250,154',
'mediumturquoise' => '72,209,204',
'mediumvioletred' => '199,21,133',
'midnightblue' => '25,25,112',
'mintcream' => '245,255,250',
'mistyrose' => '255,228,225',
'moccasin' => '255,228,181',
'navajowhite' => '255,222,173',
'navy' => '0,0,128',
'oldlace' => '253,245,230',
'olive' => '128,128,0',
'olivedrab' => '107,142,35',
'orange' => '255,165,0',
'orangered' => '255,69,0',
'orchid' => '218,112,214',
'palegoldenrod' => '238,232,170',
'palegreen' => '152,251,152',
'paleturquoise' => '175,238,238',
'palevioletred' => '219,112,147',
'papayawhip' => '255,239,213',
'peachpuff' => '255,218,185',
'peru' => '205,133,63',
'pink' => '255,192,203',
'plum' => '221,160,221',
'powderblue' => '176,224,230',
'purple' => '128,0,128',
'red' => '255,0,0',
'rosybrown' => '188,143,143',
'royalblue' => '65,105,225',
'saddlebrown' => '139,69,19',
'salmon' => '250,128,114',
'sandybrown' => '244,164,96',
'seagreen' => '46,139,87',
'seashell' => '255,245,238',
'sienna' => '160,82,45',
'silver' => '192,192,192',
'skyblue' => '135,206,235',
'slateblue' => '106,90,205',
'slategray' => '112,128,144',
'slategrey' => '112,128,144',
'snow' => '255,250,250',
'springgreen' => '0,255,127',
'steelblue' => '70,130,180',
'tan' => '210,180,140',
'teal' => '0,128,128',
'thistle' => '216,191,216',
'tomato' => '255,99,71',
'transparent' => '0,0,0,0',
'turquoise' => '64,224,208',
'violet' => '238,130,238',
'wheat' => '245,222,179',
'white' => '255,255,255',
'whitesmoke' => '245,245,245',
'yellow' => '255,255,0',
'yellowgreen' => '154,205,50'
);
}
// responsible for taking a string of LESS code and converting it into a
// syntax tree
class lessc_parser {
protected static $nextBlockId = 0; // used to uniquely identify blocks
protected static $precedence = array(
'=<' => 0,
'>=' => 0,
'=' => 0,
'<' => 0,
'>' => 0,
'+' => 1,
'-' => 1,
'*' => 2,
'/' => 2,
'%' => 2,
);
protected static $whitePattern;
protected static $commentMulti;
protected static $commentSingle = "//";
protected static $commentMultiLeft = "/*";
protected static $commentMultiRight = "*/";
// regex string to match any of the operators
protected static $operatorString;
// these properties will supress division unless it's inside
parenthases
protected static $supressDivisionProps =
array('/border-radius$/i', '/^font$/i');
protected $blockDirectives = array("font-face",
"keyframes", "page", "-moz-document",
"viewport", "-moz-viewport", "-o-viewport",
"-ms-viewport");
protected $lineDirectives = array("charset");
/**
* if we are in parens we can be more liberal with whitespace around
* operators because it must evaluate to a single value and thus is
less
* ambiguous.
*
* Consider:
* property1: 10 -5; // is two numbers, 10 and -5
* property2: (10 -5); // should evaluate to 5
*/
protected $inParens = false;
// caches preg escaped literals
protected static $literalCache = array();
public function __construct($lessc, $sourceName = null) {
$this->eatWhiteDefault = true;
// reference to less needed for vPrefix, mPrefix, and
parentSelector
$this->lessc = $lessc;
$this->sourceName = $sourceName; // name used for error messages
$this->writeComments = false;
if (!self::$operatorString) {
self::$operatorString =
'('.implode('|',
array_map(array('lessc', 'preg_quote'),
array_keys(self::$precedence))).')';
$commentSingle = lessc::preg_quote(self::$commentSingle);
$commentMultiLeft = lessc::preg_quote(self::$commentMultiLeft);
$commentMultiRight =
lessc::preg_quote(self::$commentMultiRight);
self::$commentMulti =
$commentMultiLeft.'.*?'.$commentMultiRight;
self::$whitePattern =
'/'.$commentSingle.'[^\n]*\s*|('.self::$commentMulti.')\s*|\s+/Ais';
}
}
public function parse($buffer) {
$this->count = 0;
$this->line = 1;
$this->env = null; // block stack
$this->buffer = $this->writeComments ? $buffer :
$this->removeComments($buffer);
$this->pushSpecialBlock("root");
$this->eatWhiteDefault = true;
$this->seenComments = array();
// trim whitespace on head
// if (preg_match('/^\s+/', $this->buffer, $m)) {
// $this->line += substr_count($m[0], "\n");
// $this->buffer = ltrim($this->buffer);
// }
$this->whitespace();
// parse the entire file
while (false !== $this->parseChunk());
if ($this->count != strlen($this->buffer))
$this->throwError();
// TODO report where the block was opened
if ( !property_exists($this->env, 'parent') ||
!is_null($this->env->parent) )
throw new exception('parse error: unclosed block');
return $this->env;
}
/**
* Parse a single chunk off the head of the buffer and append it to the
* current parse environment.
* Returns false when the buffer is empty, or when there is an error.
*
* This function is called repeatedly until the entire document is
* parsed.
*
* This parser is most similar to a recursive descent parser. Single
* functions represent discrete grammatical rules for the language, and
* they are able to capture the text that represents those rules.
*
* Consider the function lessc::keyword(). (all parse functions are
* structured the same)
*
* The function takes a single reference argument. When calling the
* function it will attempt to match a keyword on the head of the
buffer.
* If it is successful, it will place the keyword in the referenced
* argument, advance the position in the buffer, and return true. If it
* fails then it won't advance the buffer and it will return
false.
*
* All of these parse functions are powered by lessc::match(), which
behaves
* the same way, but takes a literal regular expression. Sometimes it
is
* more convenient to use match instead of creating a new function.
*
* Because of the format of the functions, to parse an entire string of
* grammatical rules, you can chain them together using &&.
*
* But, if some of the rules in the chain succeed before one fails,
then
* the buffer position will be left at an invalid state. In order to
* avoid this, lessc::seek() is used to remember and set buffer
positions.
*
* Before parsing a chain, use $s = $this->seek() to remember the
current
* position into $s. Then if a chain fails, use $this->seek($s) to
* go back where we started.
*/
protected function parseChunk() {
if (empty($this->buffer)) return false;
$s = $this->seek();
if ($this->whitespace()) {
return true;
}
// setting a property
if ($this->keyword($key) && $this->assign()
&&
$this->propertyValue($value, $key) &&
$this->end()
) {
$this->append(array('assign', $key, $value), $s);
return true;
} else {
$this->seek($s);
}
// look for special css blocks
if ($this->literal('@', false)) {
$this->count--;
// media
if ($this->literal('@media')) {
if (($this->mediaQueryList($mediaQueries) || true)
&& $this->literal('{')
) {
$media = $this->pushSpecialBlock("media");
$media->queries = is_null($mediaQueries) ? array() :
$mediaQueries;
return true;
} else {
$this->seek($s);
return false;
}
}
if ($this->literal("@", false) &&
$this->keyword($dirName)) {
if ($this->isDirective($dirName,
$this->blockDirectives)) {
if (($this->openString("{", $dirValue,
null, array(";")) || true) &&
$this->literal("{")
) {
$dir =
$this->pushSpecialBlock("directive");
$dir->name = $dirName;
if (isset($dirValue)) $dir->value = $dirValue;
return true;
}
} elseif ($this->isDirective($dirName,
$this->lineDirectives)) {
if ($this->propertyValue($dirValue) &&
$this->end()) {
$this->append(array("directive",
$dirName, $dirValue));
return true;
}
}
}
$this->seek($s);
}
// setting a variable
if ($this->variable($var) && $this->assign()
&&
$this->propertyValue($value) && $this->end()
) {
$this->append(array('assign', $var, $value), $s);
return true;
} else {
$this->seek($s);
}
if ($this->import($importValue)) {
$this->append($importValue, $s);
return true;
}
// opening parametric mixin
if ($this->tag($tag, true) &&
$this->argumentDef($args, $isVararg) &&
($this->guards($guards) || true) &&
$this->literal('{')
) {
$block = $this->pushBlock($this->fixTags(array($tag)));
$block->args = $args;
$block->isVararg = $isVararg;
if (!empty($guards)) $block->guards = $guards;
return true;
} else {
$this->seek($s);
}
// opening a simple block
if ($this->tags($tags) &&
$this->literal('{', false)) {
$tags = $this->fixTags($tags);
$this->pushBlock($tags);
return true;
} else {
$this->seek($s);
}
// closing a block
if ($this->literal('}', false)) {
try {
$block = $this->pop();
} catch (exception $e) {
$this->seek($s);
$this->throwError($e->getMessage());
}
$hidden = false;
if (is_null($block->type)) {
$hidden = true;
if (!isset($block->args)) {
foreach ($block->tags as $tag) {
if (!is_string($tag) || $tag[0] !=
$this->lessc->mPrefix) {
$hidden = false;
break;
}
}
}
foreach ($block->tags as $tag) {
if (is_string($tag)) {
$this->env->children[$tag][] = $block;
}
}
}
if (!$hidden) {
$this->append(array('block', $block), $s);
}
// this is done here so comments aren't bundled into he
block that
// was just closed
$this->whitespace();
return true;
}
// mixin
if ($this->mixinTags($tags) &&
($this->argumentDef($argv, $isVararg) || true) &&
($this->keyword($suffix) || true) && $this->end()
) {
$tags = $this->fixTags($tags);
$this->append(array('mixin', $tags, $argv,
$suffix), $s);
return true;
} else {
$this->seek($s);
}
// spare ;
if ($this->literal(';')) return true;
return false; // got nothing, throw error
}
protected function isDirective($dirname, $directives) {
// TODO: cache pattern in parser
$pattern = implode("|",
array_map(array("lessc", "preg_quote"),
$directives));
$pattern = '/^(-[a-z-]+-)?(' . $pattern .
')$/i';
return preg_match($pattern, $dirname);
}
protected function fixTags($tags) {
// move @ tags out of variable namespace
foreach ($tags as &$tag) {
if ($tag[0] == $this->lessc->vPrefix)
$tag[0] = $this->lessc->mPrefix;
}
return $tags;
}
// a list of expressions
protected function expressionList(&$exps) {
$values = array();
while ($this->expression($exp)) {
$values[] = $exp;
}
if (count($values) == 0) return false;
$exps = lessc::compressList($values, ' ');
return true;
}
/**
* Attempt to consume an expression.
* @link
http://en.wikipedia.org/wiki/Operator-precedence_parser#Pseudo-code
*/
protected function expression(&$out) {
if ($this->value($lhs)) {
$out = $this->expHelper($lhs, 0);
// look for / shorthand
if (!empty($this->env->supressedDivision)) {
unset($this->env->supressedDivision);
$s = $this->seek();
if ($this->literal("/") &&
$this->value($rhs)) {
$out = array("list", "",
array($out, array("keyword",
"/"), $rhs));
} else {
$this->seek($s);
}
}
return true;
}
return false;
}
/**
* recursively parse infix equation with $lhs at precedence $minP
*/
protected function expHelper($lhs, $minP) {
$this->inExp = true;
$ss = $this->seek();
while (true) {
$whiteBefore = isset($this->buffer[$this->count - 1])
&&
ctype_space($this->buffer[$this->count - 1]);
// If there is whitespace before the operator, then we require
// whitespace after the operator for it to be an expression
$needWhite = $whiteBefore && !$this->inParens;
if ($this->match(self::$operatorString.($needWhite ?
'\s' : ''), $m) && self::$precedence[$m[1]]
>= $minP) {
if (!$this->inParens &&
isset($this->env->currentProperty) && $m[1] == "/"
&& empty($this->env->supressedDivision)) {
foreach (self::$supressDivisionProps as $pattern) {
if (preg_match($pattern,
$this->env->currentProperty)) {
$this->env->supressedDivision = true;
break 2;
}
}
}
$whiteAfter = isset($this->buffer[$this->count - 1])
&&
ctype_space($this->buffer[$this->count - 1]);
if (!$this->value($rhs)) break;
// peek for next operator to see what to do with rhs
if ($this->peek(self::$operatorString, $next) &&
self::$precedence[$next[1]] > self::$precedence[$m[1]]) {
$rhs = $this->expHelper($rhs,
self::$precedence[$next[1]]);
}
$lhs = array('expression', $m[1], $lhs, $rhs,
$whiteBefore, $whiteAfter);
$ss = $this->seek();
continue;
}
break;
}
$this->seek($ss);
return $lhs;
}
// consume a list of values for a property
public function propertyValue(&$value, $keyName = null) {
$values = array();
if ($keyName !== null) $this->env->currentProperty =
$keyName;
$s = null;
while ($this->expressionList($v)) {
$values[] = $v;
$s = $this->seek();
if (!$this->literal(',')) break;
}
if ($s) $this->seek($s);
if ($keyName !== null) unset($this->env->currentProperty);
if (count($values) == 0) return false;
$value = lessc::compressList($values, ', ');
return true;
}
protected function parenValue(&$out) {
$s = $this->seek();
// speed shortcut
if (isset($this->buffer[$this->count]) &&
$this->buffer[$this->count] != "(") {
return false;
}
$inParens = $this->inParens;
if ($this->literal("(") &&
($this->inParens = true) &&
$this->expression($exp) &&
$this->literal(")")
) {
$out = $exp;
$this->inParens = $inParens;
return true;
} else {
$this->inParens = $inParens;
$this->seek($s);
}
return false;
}
// a single value
protected function value(&$value) {
$s = $this->seek();
// speed shortcut
if (isset($this->buffer[$this->count]) &&
$this->buffer[$this->count] == "-") {
// negation
if ($this->literal("-", false) &&
(($this->variable($inner) && $inner =
array("variable", $inner)) ||
$this->unit($inner) ||
$this->parenValue($inner))
) {
$value = array("unary", "-", $inner);
return true;
} else {
$this->seek($s);
}
}
if ($this->parenValue($value)) return true;
if ($this->unit($value)) return true;
if ($this->color($value)) return true;
if ($this->func($value)) return true;
if ($this->string($value)) return true;
if ($this->keyword($word)) {
$value = array('keyword', $word);
return true;
}
// try a variable
if ($this->variable($var)) {
$value = array('variable', $var);
return true;
}
// unquote string (should this work on any type?
if ($this->literal("~") &&
$this->string($str)) {
$value = array("escape", $str);
return true;
} else {
$this->seek($s);
}
// css hack: \0
if ($this->literal('\\') &&
$this->match('([0-9]+)', $m)) {
$value = array('keyword', '\\'.$m[1]);
return true;
} else {
$this->seek($s);
}
return false;
}
// an import statement
protected function import(&$out) {
if (!$this->literal('@import')) return false;
// @import "something.css" media;
// @import url("something.css") media;
// @import url(something.css) media;
if ($this->propertyValue($value)) {
$out = array("import", $value);
return true;
}
}
protected function mediaQueryList(&$out) {
if ($this->genericList($list, "mediaQuery",
",", false)) {
$out = $list[2];
return true;
}
return false;
}
protected function mediaQuery(&$out) {
$s = $this->seek();
$expressions = null;
$parts = array();
if (($this->literal("only") && ($only = true)
|| $this->literal("not") && ($not = true) || true)
&& $this->keyword($mediaType)) {
$prop = array("mediaType");
if (isset($only)) $prop[] = "only";
if (isset($not)) $prop[] = "not";
$prop[] = $mediaType;
$parts[] = $prop;
} else {
$this->seek($s);
}
if (!empty($mediaType) &&
!$this->literal("and")) {
// ~
} else {
$this->genericList($expressions,
"mediaExpression", "and", false);
if (is_array($expressions)) $parts = array_merge($parts,
$expressions[2]);
}
if (count($parts) == 0) {
$this->seek($s);
return false;
}
$out = $parts;
return true;
}
protected function mediaExpression(&$out) {
$s = $this->seek();
$value = null;
if ($this->literal("(") &&
$this->keyword($feature) &&
($this->literal(":") &&
$this->expression($value) || true) &&
$this->literal(")")
) {
$out = array("mediaExp", $feature);
if ($value) $out[] = $value;
return true;
} elseif ($this->variable($variable)) {
$out = array('variable', $variable);
return true;
}
$this->seek($s);
return false;
}
// an unbounded string stopped by $end
protected function openString($end, &$out, $nestingOpen = null,
$rejectStrs = null) {
$oldWhite = $this->eatWhiteDefault;
$this->eatWhiteDefault = false;
$stop = array("'", '"',
"@{", $end);
$stop = array_map(array("lessc", "preg_quote"),
$stop);
// $stop[] = self::$commentMulti;
if (!is_null($rejectStrs)) {
$stop = array_merge($stop, $rejectStrs);
}
$patt = '(.*?)('.implode("|",
$stop).')';
$nestingLevel = 0;
$content = array();
while ($this->match($patt, $m, false)) {
if (!empty($m[1])) {
$content[] = $m[1];
if ($nestingOpen) {
$nestingLevel += substr_count($m[1], $nestingOpen);
}
}
$tok = $m[2];
$this->count-= strlen($tok);
if ($tok == $end) {
if ($nestingLevel == 0) {
break;
} else {
$nestingLevel--;
}
}
if (($tok == "'" || $tok == '"')
&& $this->string($str)) {
$content[] = $str;
continue;
}
if ($tok == "@{" &&
$this->interpolation($inter)) {
$content[] = $inter;
continue;
}
if (!empty($rejectStrs) && in_array($tok, $rejectStrs))
{
break;
}
$content[] = $tok;
$this->count+= strlen($tok);
}
$this->eatWhiteDefault = $oldWhite;
if (count($content) == 0) return false;
// trim the end
if (is_string(end($content))) {
$content[count($content) - 1] = rtrim(end($content));
}
$out = array("string", "", $content);
return true;
}
protected function string(&$out) {
$s = $this->seek();
if ($this->literal('"', false)) {
$delim = '"';
} elseif ($this->literal("'", false)) {
$delim = "'";
} else {
return false;
}
$content = array();
// look for either ending delim , escape, or string interpolation
$patt = '([^\n]*?)(@\{|\\\\|' .
lessc::preg_quote($delim).')';
$oldWhite = $this->eatWhiteDefault;
$this->eatWhiteDefault = false;
while ($this->match($patt, $m, false)) {
$content[] = $m[1];
if ($m[2] == "@{") {
$this->count -= strlen($m[2]);
if ($this->interpolation($inter, false)) {
$content[] = $inter;
} else {
$this->count += strlen($m[2]);
$content[] = "@{"; // ignore it
}
} elseif ($m[2] == '\\') {
$content[] = $m[2];
if ($this->literal($delim, false)) {
$content[] = $delim;
}
} else {
$this->count -= strlen($delim);
break; // delim
}
}
$this->eatWhiteDefault = $oldWhite;
if ($this->literal($delim)) {
$out = array("string", $delim, $content);
return true;
}
$this->seek($s);
return false;
}
protected function interpolation(&$out) {
$oldWhite = $this->eatWhiteDefault;
$this->eatWhiteDefault = true;
$s = $this->seek();
if ($this->literal("@{") &&
$this->openString("}", $interp, null,
array("'", '"', ";")) &&
$this->literal("}", false)
) {
$out = array("interpolate", $interp);
$this->eatWhiteDefault = $oldWhite;
if ($this->eatWhiteDefault) $this->whitespace();
return true;
}
$this->eatWhiteDefault = $oldWhite;
$this->seek($s);
return false;
}
protected function unit(&$unit) {
// speed shortcut
if (isset($this->buffer[$this->count])) {
$char = $this->buffer[$this->count];
if (!ctype_digit($char) && $char != ".")
return false;
}
if
($this->match('([0-9]+(?:\.[0-9]*)?|\.[0-9]+)([%a-zA-Z]+)?',
$m)) {
$unit = array("number", $m[1], empty($m[2]) ?
"" : $m[2]);
return true;
}
return false;
}
// a # color
protected function color(&$out) {
if
($this->match('(#(?:[0-9a-f]{8}|[0-9a-f]{6}|[0-9a-f]{3}))',
$m)) {
if (strlen($m[1]) > 7) {
$out = array("string", "",
array($m[1]));
} else {
$out = array("raw_color", $m[1]);
}
return true;
}
return false;
}
// consume an argument definition list surrounded by ()
// each argument is a variable name with optional value
// or at the end a ... or a variable named followed by ...
// arguments are separated by , unless a ; is in the list, then ; is
the
// delimiter.
protected function argumentDef(&$args, &$isVararg) {
$s = $this->seek();
if (!$this->literal('(')) {
return false;
}
$values = array();
$delim = ",";
$method = "expressionList";
$isVararg = false;
while (true) {
if ($this->literal("...")) {
$isVararg = true;
break;
}
if ($this->$method($value)) {
if ($value[0] == "variable") {
$arg = array("arg", $value[1]);
$ss = $this->seek();
if ($this->assign() &&
$this->$method($rhs)) {
$arg[] = $rhs;
} else {
$this->seek($ss);
if ($this->literal("...")) {
$arg[0] = "rest";
$isVararg = true;
}
}
$values[] = $arg;
if ($isVararg) {
break;
}
continue;
} else {
$values[] = array("lit", $value);
}
}
if (!$this->literal($delim)) {
if ($delim == "," &&
$this->literal(";")) {
// found new delim, convert existing args
$delim = ";";
$method = "propertyValue";
// transform arg list
if (isset($values[1])) { // 2 items
$newList = array();
foreach ($values as $i => $arg) {
switch ($arg[0]) {
case "arg":
if ($i) {
$this->throwError("Cannot mix ;
and , as delimiter types");
}
$newList[] = $arg[2];
break;
case "lit":
$newList[] = $arg[1];
break;
case "rest":
$this->throwError("Unexpected rest
before semicolon");
}
}
$newList = array("list", ", ",
$newList);
switch ($values[0][0]) {
case "arg":
$newArg = array("arg", $values[0][1],
$newList);
break;
case "lit":
$newArg = array("lit", $newList);
break;
}
} elseif ($values) { // 1 item
$newArg = $values[0];
}
if ($newArg) {
$values = array($newArg);
}
} else {
break;
}
}
}
if (!$this->literal(')')) {
$this->seek($s);
return false;
}
$args = $values;
return true;
}
// consume a list of tags
// this accepts a hanging delimiter
protected function tags(&$tags, $simple = false, $delim =
',') {
$tags = array();
while ($this->tag($tt, $simple)) {
$tags[] = $tt;
if (!$this->literal($delim)) break;
}
if (count($tags) == 0) return false;
return true;
}
// list of tags of specifying mixin path
// optionally separated by > (lazy, accepts extra >)
protected function mixinTags(&$tags) {
$tags = array();
while ($this->tag($tt, true)) {
$tags[] = $tt;
$this->literal(">");
}
if (!$tags) {
return false;
}
return true;
}
// a bracketed value (contained within in a tag definition)
protected function tagBracket(&$parts, &$hasExpression) {
// speed shortcut
if (isset($this->buffer[$this->count]) &&
$this->buffer[$this->count] != "[") {
return false;
}
$s = $this->seek();
$hasInterpolation = false;
if ($this->literal("[", false)) {
$attrParts = array("[");
// keyword, string, operator
while (true) {
if ($this->literal("]", false)) {
$this->count--;
break; // get out early
}
if ($this->match('\s+', $m)) {
$attrParts[] = " ";
continue;
}
if ($this->string($str)) {
// escape parent selector, (yuck)
foreach ($str[2] as &$chunk) {
$chunk =
str_replace($this->lessc->parentSelector, "$&$",
$chunk);
}
$attrParts[] = $str;
$hasInterpolation = true;
continue;
}
if ($this->keyword($word)) {
$attrParts[] = $word;
continue;
}
if ($this->interpolation($inter, false)) {
$attrParts[] = $inter;
$hasInterpolation = true;
continue;
}
// operator, handles attr namespace too
if ($this->match('[|-~\$\*\^=]+', $m)) {
$attrParts[] = $m[0];
continue;
}
break;
}
if ($this->literal("]", false)) {
$attrParts[] = "]";
foreach ($attrParts as $part) {
$parts[] = $part;
}
$hasExpression = $hasExpression || $hasInterpolation;
return true;
}
$this->seek($s);
}
$this->seek($s);
return false;
}
// a space separated list of selectors
protected function tag(&$tag, $simple = false) {
if ($simple) {
$chars = '^@,:;{}\][>\(\) "\'';
} else {
$chars = '^@,;{}["\'';
}
$s = $this->seek();
$hasExpression = false;
$parts = array();
while ($this->tagBracket($parts, $hasExpression));
$oldWhite = $this->eatWhiteDefault;
$this->eatWhiteDefault = false;
while (true) {
if
($this->match('(['.$chars.'0-9]['.$chars.']*)',
$m)) {
$parts[] = $m[1];
if ($simple) break;
while ($this->tagBracket($parts, $hasExpression));
continue;
}
if (isset($this->buffer[$this->count]) &&
$this->buffer[$this->count] == "@") {
if ($this->interpolation($interp)) {
$hasExpression = true;
$interp[2] = true; // don't unescape
$parts[] = $interp;
continue;
}
if ($this->literal("@")) {
$parts[] = "@";
continue;
}
}
if ($this->unit($unit)) { // for keyframes
$parts[] = $unit[1];
$parts[] = $unit[2];
continue;
}
break;
}
$this->eatWhiteDefault = $oldWhite;
if (!$parts) {
$this->seek($s);
return false;
}
if ($hasExpression) {
$tag = array("exp", array("string",
"", $parts));
} else {
$tag = trim(implode($parts));
}
$this->whitespace();
return true;
}
// a css function
protected function func(&$func) {
$s = $this->seek();
if ($this->match('(%|[\w\-_][\w\-_:\.]+|[\w_])', $m)
&& $this->literal('(')) {
$fname = $m[1];
$sPreArgs = $this->seek();
$args = array();
while (true) {
$ss = $this->seek();
// this ugly nonsense is for ie filter properties
if ($this->keyword($name) &&
$this->literal('=') &&
$this->expressionList($value)) {
$args[] = array("string", "",
array($name, "=", $value));
} else {
$this->seek($ss);
if ($this->expressionList($value)) {
$args[] = $value;
}
}
if (!$this->literal(',')) break;
}
$args = array('list', ',', $args);
if ($this->literal(')')) {
$func = array('function', $fname, $args);
return true;
} elseif ($fname == 'url') {
// couldn't parse and in url? treat as string
$this->seek($sPreArgs);
if ($this->openString(")", $string) &&
$this->literal(")")) {
$func = array('function', $fname, $string);
return true;
}
}
}
$this->seek($s);
return false;
}
// consume a less variable
protected function variable(&$name) {
$s = $this->seek();
if ($this->literal($this->lessc->vPrefix, false)
&&
($this->variable($sub) || $this->keyword($name))
) {
if (!empty($sub)) {
$name = array('variable', $sub);
} else {
$name = $this->lessc->vPrefix.$name;
}
return true;
}
$name = null;
$this->seek($s);
return false;
}
/**
* Consume an assignment operator
* Can optionally take a name that will be set to the current property
name
*/
protected function assign($name = null) {
if ($name) $this->currentProperty = $name;
return $this->literal(':') ||
$this->literal('=');
}
// consume a keyword
protected function keyword(&$word) {
if ($this->match('([\w_\-\*!"][\w\-_"]*)',
$m)) {
$word = $m[1];
return true;
}
return false;
}
// consume an end of statement delimiter
protected function end() {
if ($this->literal(';', false)) {
return true;
} elseif ($this->count == strlen($this->buffer) ||
$this->buffer[$this->count] == '}') {
// if there is end of file or a closing block next then we
don't need a ;
return true;
}
return false;
}
protected function guards(&$guards) {
$s = $this->seek();
if (!$this->literal("when")) {
$this->seek($s);
return false;
}
$guards = array();
while ($this->guardGroup($g)) {
$guards[] = $g;
if (!$this->literal(",")) break;
}
if (count($guards) == 0) {
$guards = null;
$this->seek($s);
return false;
}
return true;
}
// a bunch of guards that are and'd together
// TODO rename to guardGroup
protected function guardGroup(&$guardGroup) {
$s = $this->seek();
$guardGroup = array();
while ($this->guard($guard)) {
$guardGroup[] = $guard;
if (!$this->literal("and")) break;
}
if (count($guardGroup) == 0) {
$guardGroup = null;
$this->seek($s);
return false;
}
return true;
}
protected function guard(&$guard) {
$s = $this->seek();
$negate = $this->literal("not");
if ($this->literal("(") &&
$this->expression($exp) && $this->literal(")")) {
$guard = $exp;
if ($negate) $guard = array("negate", $guard);
return true;
}
$this->seek($s);
return false;
}
/* raw parsing functions */
protected function literal($what, $eatWhitespace = null) {
if ($eatWhitespace === null) $eatWhitespace =
$this->eatWhiteDefault;
// shortcut on single letter
if (!isset($what[1]) &&
isset($this->buffer[$this->count])) {
if ($this->buffer[$this->count] == $what) {
if (!$eatWhitespace) {
$this->count++;
return true;
}
// goes below...
} else {
return false;
}
}
if (!isset(self::$literalCache[$what])) {
self::$literalCache[$what] = lessc::preg_quote($what);
}
return $this->match(self::$literalCache[$what], $m,
$eatWhitespace);
}
protected function genericList(&$out, $parseItem, $delim =
"", $flatten = true) {
$s = $this->seek();
$items = array();
while ($this->$parseItem($value)) {
$items[] = $value;
if ($delim) {
if (!$this->literal($delim)) break;
}
}
if (count($items) == 0) {
$this->seek($s);
return false;
}
if ($flatten && count($items) == 1) {
$out = $items[0];
} else {
$out = array("list", $delim, $items);
}
return true;
}
// advance counter to next occurrence of $what
// $until - don't include $what in advance
// $allowNewline, if string, will be used as valid char set
protected function to($what, &$out, $until = false, $allowNewline =
false) {
if (is_string($allowNewline)) {
$validChars = $allowNewline;
} else {
$validChars = $allowNewline ? "." :
"[^\n]";
}
if
(!$this->match('('.$validChars.'*?)'.lessc::preg_quote($what),
$m, !$until)) return false;
if ($until) $this->count -= strlen($what); // give back $what
$out = $m[1];
return true;
}
// try to match something on head of buffer
protected function match($regex, &$out, $eatWhitespace = null) {
if ($eatWhitespace === null) $eatWhitespace =
$this->eatWhiteDefault;
$r = '/'.$regex.($eatWhitespace &&
!$this->writeComments ? '\s*' :
'').'/Ais';
if (preg_match($r, $this->buffer, $out, null, $this->count))
{
$this->count += strlen($out[0]);
if ($eatWhitespace && $this->writeComments)
$this->whitespace();
return true;
}
return false;
}
// match some whitespace
protected function whitespace() {
if ($this->writeComments) {
$gotWhite = false;
while (preg_match(self::$whitePattern, $this->buffer, $m,
null, $this->count)) {
if (isset($m[1]) &&
empty($this->seenComments[$this->count])) {
$this->append(array("comment", $m[1]));
$this->seenComments[$this->count] = true;
}
$this->count += strlen($m[0]);
$gotWhite = true;
}
return $gotWhite;
} else {
$this->match("", $m);
return strlen($m[0]) > 0;
}
}
// match something without consuming it
protected function peek($regex, &$out = null, $from = null) {
if (is_null($from)) $from = $this->count;
$r = '/'.$regex.'/Ais';
$result = preg_match($r, $this->buffer, $out, null, $from);
return $result;
}
// seek to a spot in the buffer or return where we are on no argument
protected function seek($where = null) {
if ($where === null) return $this->count;
else $this->count = $where;
return true;
}
/* misc functions */
public function throwError($msg = "parse error", $count =
null) {
$count = is_null($count) ? $this->count : $count;
$line = $this->line +
substr_count(substr($this->buffer, 0, $count),
"\n");
if (!empty($this->sourceName)) {
$loc = "$this->sourceName on line $line";
} else {
$loc = "line: $line";
}
// TODO this depends on $this->count
if ($this->peek("(.*?)(\n|$)", $m, $count)) {
throw new exception("$msg: failed at `$m[1]` $loc");
} else {
throw new exception("$msg: $loc");
}
}
protected function pushBlock($selectors = null, $type = null) {
$b = new stdclass;
$b->parent = $this->env;
$b->type = $type;
$b->id = self::$nextBlockId++;
$b->isVararg = false; // TODO: kill me from here
$b->tags = $selectors;
$b->props = array();
$b->children = array();
$this->env = $b;
return $b;
}
// push a block that doesn't multiply tags
protected function pushSpecialBlock($type) {
return $this->pushBlock(null, $type);
}
// append a property to the current block
protected function append($prop, $pos = null) {
if ($pos !== null) $prop[-1] = $pos;
$this->env->props[] = $prop;
}
// pop something off the stack
protected function pop() {
$old = $this->env;
$this->env = $this->env->parent;
return $old;
}
// remove comments from $text
// todo: make it work for all functions, not just url
protected function removeComments($text) {
$look = array(
'url(', '//', '/*',
'"', "'"
);
$out = '';
$min = null;
while (true) {
// find the next item
foreach ($look as $token) {
$pos = strpos($text, $token);
if ($pos !== false) {
if (!isset($min) || $pos < $min[1]) $min =
array($token, $pos);
}
}
if (is_null($min)) break;
$count = $min[1];
$skip = 0;
$newlines = 0;
switch ($min[0]) {
case 'url(':
if (preg_match('/url\(.*?\)/', $text, $m, 0,
$count))
$count += strlen($m[0]) - strlen($min[0]);
break;
case '"':
case "'":
if
(preg_match('/'.$min[0].'.*?(?<!\\\\)'.$min[0].'/',
$text, $m, 0, $count))
$count += strlen($m[0]) - 1;
break;
case '//':
$skip = strpos($text, "\n", $count);
if ($skip === false) $skip = strlen($text) - $count;
else $skip -= $count;
break;
case '/*':
if (preg_match('/\/\*.*?\*\//s', $text, $m, 0,
$count)) {
$skip = strlen($m[0]);
$newlines = substr_count($m[0], "\n");
}
break;
}
if ($skip == 0) $count += strlen($min[0]);
$out .= substr($text, 0, $count).str_repeat("\n",
$newlines);
$text = substr($text, $count + $skip);
$min = null;
}
return $out.$text;
}
}
class lessc_formatter_classic {
public $indentChar = " ";
public $break = "\n";
public $open = " {";
public $close = "}";
public $selectorSeparator = ", ";
public $assignSeparator = ":";
public $openSingle = " { ";
public $closeSingle = " }";
public $disableSingle = false;
public $breakSelectors = false;
public $compressColors = false;
public function __construct() {
$this->indentLevel = 0;
}
public function indentStr($n = 0) {
return str_repeat($this->indentChar, max($this->indentLevel +
$n, 0));
}
public function property($name, $value) {
return $name . $this->assignSeparator . $value . ";";
}
protected function isEmpty($block) {
if (empty($block->lines)) {
foreach ($block->children as $child) {
if (!$this->isEmpty($child)) return false;
}
return true;
}
return false;
}
public function block($block) {
if ($this->isEmpty($block)) return;
$inner = $pre = $this->indentStr();
$isSingle = !$this->disableSingle &&
is_null($block->type) && count($block->lines) ==
1;
if (!empty($block->selectors)) {
$this->indentLevel++;
if ($this->breakSelectors) {
$selectorSeparator = $this->selectorSeparator .
$this->break . $pre;
} else {
$selectorSeparator = $this->selectorSeparator;
}
echo $pre .
implode($selectorSeparator, $block->selectors);
if ($isSingle) {
echo $this->openSingle;
$inner = "";
} else {
echo $this->open . $this->break;
$inner = $this->indentStr();
}
}
if (!empty($block->lines)) {
$glue = $this->break.$inner;
echo $inner . implode($glue, $block->lines);
if (!$isSingle && !empty($block->children)) {
echo $this->break;
}
}
foreach ($block->children as $child) {
$this->block($child);
}
if (!empty($block->selectors)) {
if (!$isSingle && empty($block->children)) echo
$this->break;
if ($isSingle) {
echo $this->closeSingle . $this->break;
} else {
echo $pre . $this->close . $this->break;
}
$this->indentLevel--;
}
}
}
class lessc_formatter_compressed extends lessc_formatter_classic {
public $disableSingle = true;
public $open = "{";
public $selectorSeparator = ",";
public $assignSeparator = ":";
public $break = "";
public $compressColors = true;
public function indentStr($n = 0) {
return "";
}
}
class lessc_formatter_lessjs extends lessc_formatter_classic {
public $disableSingle = true;
public $breakSelectors = true;
public $assignSeparator = ": ";
public $selectorSeparator = ",";
}
PK9�[���/��lessphp/lessifynu�[���#!/usr/bin/env
php
<?php
if (php_sapi_name() != "cli") {
err($fa.$argv[0]." must be run in the command line.");
exit(1);
}
$exe = array_shift($argv); // remove filename
if (!$fname = array_shift($argv)) {
exit("Usage: ".$exe." input-file\n");
}
require "lessify.inc.php";
try {
$parser = new lessify($fname);
echo $parser->parse();
} catch (exception $e) {
exit("Fatal error: ".$e->getMessage()."\n");
}
PK9�[��1d2d2lessphp/lessify.inc.phpnu�[���<?php
/**
* lessify
* Convert a css file into a less file
* http://leafo.net/lessphp
* Copyright 2010, leaf corcoran <leafot@gmail.com>
*
* WARNING: THIS DOES NOT WORK ANYMORE. NEEDS TO BE UPDATED FOR
* LATEST VERSION OF LESSPHP.
*
*/
require "lessc.inc.php";
//
// check if the merge during mixin is overwriting values. should or should
it not?
//
//
// 1. split apart class tags
//
class easyparse {
public $buffer;
public $count;
public function __construct($str) {
$this->count = 0;
$this->buffer = trim($str);
}
public function seek($where = null) {
if ($where === null) {
return $this->count;
}
$this->count = $where;
return true;
}
public function preg_quote($what) {
return preg_quote($what, '/');
}
public function match($regex, &$out, $eatWhitespace = true) {
$r = '/'.$regex.($eatWhitespace ? '\s*' :
'').'/Ais';
if (preg_match($r, $this->buffer, $out, null, $this->count))
{
$this->count += strlen($out[0]);
return true;
}
return false;
}
public function literal($what, $eatWhitespace = true) {
// this is here mainly prevent notice from { } string accessor
if ($this->count >= strlen($this->buffer)) return false;
// shortcut on single letter
if (!$eatWhitespace and strlen($what) === 1) {
if ($this->buffer{$this->count} == $what) {
$this->count++;
return true;
}
return false;
}
return $this->match($this->preg_quote($what), $m,
$eatWhitespace);
}
}
class tagparse extends easyparse {
private static $combinators = null;
private static $match_opts = null;
public function parse() {
if (empty(self::$combinators)) {
self::$combinators = '(' . implode('|',
array_map(array($this, 'preg_quote'),
array('+', '>',
'~'))).')';
self::$match_opts = '(' . implode('|',
array_map(array($this, 'preg_quote'),
array('=', '~=', '|=',
'$=', '*='))) . ')';
}
// crush whitespace
$this->buffer = preg_replace('/\s+/', ' ',
$this->buffer) . ' ';
$tags = array();
while ($this->tag($t)) {
$tags[] = $t;
}
return $tags;
}
public static function compileString($string) {
list(, $delim, $str) = $string;
$str = str_replace($delim, "\\" . $delim, $str);
$str = str_replace("\n", "\\\n", $str);
return $delim . $str . $delim;
}
public static function compilePaths($paths) {
return implode(', ', array_map(array('self',
'compilePath'), $paths));
}
// array of tags
public static function compilePath($path) {
return implode(' ', array_map(array('self',
'compileTag'), $path));
}
public static function compileTag($tag) {
ob_start();
if (isset($tag['comb'])) echo $tag['comb'] .
" ";
if (isset($tag['front'])) echo $tag['front'];
if (isset($tag['attr'])) {
echo '[' . $tag['attr'];
if (isset($tag['op'])) {
echo $tag['op'] . $tag['op_value'];
}
echo ']';
}
return ob_get_clean();
}
public function string(&$out) {
$s = $this->seek();
if ($this->literal('"')) {
$delim = '"';
} elseif ($this->literal("'")) {
$delim = "'";
} else {
return false;
}
while (true) {
// step through letters looking for either end or escape
$buff = "";
$escapeNext = false;
$finished = false;
for ($i = $this->count; $i < strlen($this->buffer);
$i++) {
$char = $this->buffer[$i];
switch ($char) {
case $delim:
if ($escapeNext) {
$buff .= $char;
$escapeNext = false;
break;
}
$finished = true;
break 2;
case "\\":
if ($escapeNext) {
$buff .= $char;
$escapeNext = false;
} else {
$escapeNext = true;
}
break;
case "\n":
if (!$escapeNext) {
break 3;
}
$buff .= $char;
$escapeNext = false;
break;
default:
if ($escapeNext) {
$buff .= "\\";
$escapeNext = false;
}
$buff .= $char;
}
}
if (!$finished) break;
$out = array('string', $delim, $buff);
$this->seek($i+1);
return true;
}
$this->seek($s);
return false;
}
public function tag(&$out) {
$s = $this->seek();
$tag = array();
if ($this->combinator($op)) $tag['comb'] = $op;
if (!$this->match('(.*?)(
|$|\[|'.self::$combinators.')', $match)) {
$this->seek($s);
return false;
}
if (!empty($match[3])) {
// give back combinator
$this->count-=strlen($match[3]);
}
if (!empty($match[1])) $tag['front'] = $match[1];
if ($match[2] == '[') {
if ($this->ident($i)) {
$tag['attr'] = $i;
if ($this->match(self::$match_opts, $m) &&
$this->value($v)) {
$tag['op'] = $m[1];
$tag['op_value'] = $v;
}
if ($this->literal(']')) {
$out = $tag;
return true;
}
}
} elseif (isset($tag['front'])) {
$out = $tag;
return true;
}
$this->seek($s);
return false;
}
public function ident(&$out) {
// [-]?{nmstart}{nmchar}*
// nmstart: [_a-z]|{nonascii}|{escape}
// nmchar: [_a-z0-9-]|{nonascii}|{escape}
if ($this->match('(-?[_a-z][_\w]*)', $m)) {
$out = $m[1];
return true;
}
return false;
}
public function value(&$out) {
if ($this->string($str)) {
$out = $this->compileString($str);
return true;
} elseif ($this->ident($id)) {
$out = $id;
return true;
}
return false;
}
public function combinator(&$op) {
if ($this->match(self::$combinators, $m)) {
$op = $m[1];
return true;
}
return false;
}
}
class nodecounter {
public $count = 0;
public $children = array();
public $name;
public $child_blocks;
public $the_block;
public function __construct($name) {
$this->name = $name;
}
public function dump($stack = null) {
if (is_null($stack)) $stack = array();
$stack[] = $this->getName();
echo implode(' -> ', $stack) . "
($this->count)\n";
foreach ($this->children as $child) {
$child->dump($stack);
}
}
public static function compileProperties($c, $block) {
foreach ($block as $name => $value) {
if ($c->isProperty($name, $value)) {
echo $c->compileProperty($name, $value) .
"\n";
}
}
}
public function compile($c, $path = null) {
if (is_null($path)) $path = array();
$path[] = $this->name;
$isVisible = !is_null($this->the_block) ||
!is_null($this->child_blocks);
if ($isVisible) {
echo $c->indent(implode(' ', $path) . '
{');
$c->indentLevel++;
$path = array();
if ($this->the_block) {
$this->compileProperties($c, $this->the_block);
}
if ($this->child_blocks) {
foreach ($this->child_blocks as $block) {
echo
$c->indent(tagparse::compilePaths($block['__tags']).'
{');
$c->indentLevel++;
$this->compileProperties($c, $block);
$c->indentLevel--;
echo $c->indent('}');
}
}
}
// compile child nodes
foreach ($this->children as $node) {
$node->compile($c, $path);
}
if ($isVisible) {
$c->indentLevel--;
echo $c->indent('}');
}
}
public function getName() {
if (is_null($this->name)) return "[root]";
else return $this->name;
}
public function getNode($name) {
if (!isset($this->children[$name])) {
$this->children[$name] = new nodecounter($name);
}
return $this->children[$name];
}
public function findNode($path) {
$current = $this;
for ($i = 0; $i < count($path); $i++) {
$t = tagparse::compileTag($path[$i]);
$current = $current->getNode($t);
}
return $current;
}
public function addBlock($path, $block) {
$node = $this->findNode($path);
if (!is_null($node->the_block)) throw new exception("can
this happen?");
unset($block['__tags']);
$node->the_block = $block;
}
public function addToNode($path, $block) {
$node = $this->findNode($path);
$node->child_blocks[] = $block;
}
}
/**
* create a less file from a css file by combining blocks where appropriate
*/
class lessify extends lessc {
public function dump() {
print_r($this->env);
}
public function parse($str = null) {
$this->prepareParser($str ? $str : $this->buffer);
while (false !== $this->parseChunk());
$root = new nodecounter(null);
// attempt to preserve some of the block order
$order = array();
$visitedTags = array();
foreach (end($this->env) as $name => $block) {
if (!$this->isBlock($name, $block)) continue;
if (isset($visitedTags[$name])) continue;
foreach ($block['__tags'] as $t) {
$visitedTags[$t] = true;
}
// skip those with more than 1
if (count($block['__tags']) == 1) {
$p = new tagparse(end($block['__tags']));
$path = $p->parse();
$root->addBlock($path, $block);
$order[] = array('compressed', $path, $block);
continue;
} else {
$common = null;
$paths = array();
foreach ($block['__tags'] as $rawtag) {
$p = new tagparse($rawtag);
$paths[] = $path = $p->parse();
if (is_null($common)) $common = $path;
else {
$new_common = array();
foreach ($path as $tag) {
$head = array_shift($common);
if ($tag == $head) {
$new_common[] = $head;
} else break;
}
$common = $new_common;
if (empty($common)) {
// nothing in common
break;
}
}
}
if (!empty($common)) {
$new_paths = array();
foreach ($paths as $p) $new_paths[] = array_slice($p,
count($common));
$block['__tags'] = $new_paths;
$root->addToNode($common, $block);
$order[] = array('compressed', $common,
$block);
continue;
}
}
$order[] = array('none', $block['__tags'],
$block);
}
$compressed = $root->children;
foreach ($order as $item) {
list($type, $tags, $block) = $item;
if ($type == 'compressed') {
$top = tagparse::compileTag(reset($tags));
if (isset($compressed[$top])) {
$compressed[$top]->compile($this);
unset($compressed[$top]);
}
} else {
echo $this->indent(implode(', ', $tags).'
{');
$this->indentLevel++;
nodecounter::compileProperties($this, $block);
$this->indentLevel--;
echo $this->indent('}');
}
}
}
}
PK9�[
���i�i�lessphp/LICENSEnu�[���For ease of
distribution, lessphp is under a dual license.
You are free to pick which one suits your needs.
MIT LICENSE
Copyright (c) 2014 Leaf Corcoran, http://leafo.net/lessphp
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction,
including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
GPL VERSION 3
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft license for
software and other kinds of works.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users. We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors. You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new
free programs, and that you know you can do these things.
To protect your rights, we need to prevent others from denying you
these rights or asking you to surrender the rights. Therefore, you have
certain responsibilities if you distribute copies of the software, or if
you modify it: responsibilities to respect the freedom of others.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must pass on to the recipients the same
freedoms that you received. You must make sure that they, too, receive
or can get the source code. And you must show them these terms so they
know their rights.
Developers that use the GNU GPL protect your rights with two steps:
(1) assert copyright on the software, and (2) offer you this License
giving you legal permission to copy, distribute and/or modify it.
For the developers' and authors' protection, the GPL clearly
explains
that there is no warranty for this free software. For both users' and
authors' sake, the GPL requires that modified versions be marked as
changed, so that their problems will not be attributed erroneously to
authors of previous versions.
Some devices are designed to deny users access to install or run
modified versions of the software inside them, although the manufacturer
can do so. This is fundamentally incompatible with the aim of
protecting users' freedom to change the software. The systematic
pattern of such abuse occurs in the area of products for individuals to
use, which is precisely where it is most unacceptable. Therefore, we
have designed this version of the GPL to prohibit the practice for those
products. If such problems arise substantially in other domains, we
stand ready to extend this provision to those domains in future versions
of the GPL, as needed to protect the freedom of users.
Finally, every program is threatened constantly by software patents.
States should not allow patents to restrict development and use of
software on general-purpose computers, but in those that do, we wish to
avoid the special danger that patents applied to a free program could
make it effectively proprietary. To prevent this, the GPL assures that
patents cannot be used to render the program non-free.
The precise terms and conditions for copying, distribution and
modification follow.
TERMS AND CONDITIONS
0. Definitions.
"This License" refers to version 3 of the GNU General Public
License.
"Copyright" also means copyright-like laws that apply to other
kinds of
works, such as semiconductor masks.
"The Program" refers to any copyrightable work licensed under
this
License. Each licensee is addressed as "you".
"Licensees" and
"recipients" may be individuals or organizations.
To "modify" a work means to copy from or adapt all or part of
the work
in a fashion requiring copyright permission, other than the making of an
exact copy. The resulting work is called a "modified version" of
the
earlier work or a work "based on" the earlier work.
A "covered work" means either the unmodified Program or a work
based
on the Program.
To "propagate" a work means to do anything with it that,
without
permission, would make you directly or secondarily liable for
infringement under applicable copyright law, except executing it on a
computer or modifying a private copy. Propagation includes copying,
distribution (with or without modification), making available to the
public, and in some countries other activities as well.
To "convey" a work means any kind of propagation that enables
other
parties to make or receive copies. Mere interaction with a user through
a computer network, with no transfer of a copy, is not conveying.
An interactive user interface displays "Appropriate Legal
Notices"
to the extent that it includes a convenient and prominently visible
feature that (1) displays an appropriate copyright notice, and (2)
tells the user that there is no warranty for the work (except to the
extent that warranties are provided), that licensees may convey the
work under this License, and how to view a copy of this License. If
the interface presents a list of user commands or options, such as a
menu, a prominent item in the list meets this criterion.
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The "source code" for a work means the preferred form of the
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"Major Component", in this context, means a major essential
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PK:�[��2�++lessphp/plesscnu�[���#!/usr/bin/env
php
<?php
// Command line utility to compile LESS to STDOUT
// Leaf Corcoran <leafot@gmail.com>, 2013
$exe = array_shift($argv); // remove filename
$HELP = <<<EOT
Usage: $exe [options] input-file [output-file]
Options include:
-h, --help Show this message
-v Print the version
-f=format Set the output format, includes "default",
"compressed"
-c Keep /* */ comments in output
-r Read from STDIN instead of input-file
-w Watch input-file, and compile to output-file if it is
changed
-T Dump formatted parse tree
-X Dump raw parse tree
EOT;
$opts = getopt('hvrwncXTf:', array('help'));
while (count($argv) > 0 &&
preg_match('/^-([-hvrwncXT]$|[f]=)/', $argv[0])) {
array_shift($argv);
}
function has() {
global $opts;
foreach (func_get_args() as $arg) {
if (isset($opts[$arg])) return true;
}
return false;
}
if (has("h", "help")) {
exit($HELP);
}
error_reporting(E_ALL);
$path = realpath(dirname(__FILE__)).'/';
require $path."lessc.inc.php";
$VERSION = lessc::$VERSION;
$fa = "Fatal Error: ";
function err($msg) {
fwrite(STDERR, $msg."\n");
}
if (php_sapi_name() != "cli") {
err($fa.$argv[0]." must be run in the command line.");
exit(1);
}
function make_less($fname = null) {
global $opts;
$l = new lessc($fname);
if (has("f")) {
$format = $opts["f"];
if ($format != "default") $l->setFormatter($format);
}
if (has("c")) {
$l->setPreserveComments(true);
}
return $l;
}
function process($data, $import = null) {
global $fa;
$l = make_less();
if ($import) $l->importDir = $import;
try {
echo $l->parse($data);
exit(0);
} catch (exception $ex) {
err($fa."\n".str_repeat('=', 20)."\n".
$ex->getMessage());
exit(1);
}
}
if (has("v")) {
exit($VERSION."\n");
}
if (has("r")) {
if (!empty($argv)) {
$data = $argv[0];
} else {
$data = "";
while (!feof(STDIN)) {
$data .= fread(STDIN, 8192);
}
}
exit(process($data));
}
if (has("w")) {
// need two files
if (!is_file($in = array_shift($argv)) ||
null == $out = array_shift($argv))
{
err($fa.$exe." -w infile outfile");
exit(1);
}
echo "Watching ".$in.
(has("n") ? ' with notifications' : '').
", press Ctrl + c to exit.\n";
$cache = $in;
$last_action = 0;
while (true) {
clearstatcache();
// check if anything has changed since last fail
$updated = false;
if (is_array($cache)) {
foreach ($cache['files'] as $fname=>$_) {
if (filemtime($fname) > $last_action) {
$updated = true;
break;
}
}
} else $updated = true;
// try to compile it
if ($updated) {
$last_action = time();
try {
$cache = lessc::cexecute($cache);
echo "Writing updated file: ".$out."\n";
if (!file_put_contents($out, $cache['compiled'])) {
err($fa."Could not write to file ".$out);
exit(1);
}
} catch (exception $ex) {
echo "\nFatal Error:\n".str_repeat('=',
20)."\n".
$ex->getMessage()."\n\n";
if (has("n")) {
`notify-send -u critical "compile failed"
"{$ex->getMessage()}"`;
}
}
}
sleep(1);
}
exit(0);
}
if (!$fname = array_shift($argv)) {
echo $HELP;
exit(1);
}
function dumpValue($node, $depth = 0) {
if (is_object($node)) {
$indent = str_repeat(" ", $depth);
$out = array();
foreach ($node->props as $prop) {
$out[] = $indent . dumpValue($prop, $depth + 1);
}
$out = implode("\n", $out);
if (!empty($node->tags)) {
$out = "+ ".implode(", ",
$node->tags)."\n".$out;
}
return $out;
} elseif (is_array($node)) {
if (empty($node)) return "[]";
$type = $node[0];
if ($type == "block")
return dumpValue($node[1], $depth);
$out = array();
foreach ($node as $value) {
$out[] = dumpValue($value, $depth);
}
return "{ ".implode(", ", $out)." }";
} else {
if (is_string($node) && preg_match("/[\s,]/", $node)) {
return '"'.$node.'"';
}
return $node; // normal value
}
}
function stripValue($o, $toStrip) {
if (is_array($o) || is_object($o)) {
$isObject = is_object($o);
$o = (array)$o;
foreach ($toStrip as $removeKey) {
if (!empty($o[$removeKey])) {
$o[$removeKey] = "*stripped*";
}
}
foreach ($o as $k => $v) {
$o[$k] = stripValue($v, $toStrip);
}
if ($isObject) {
$o = (object)$o;
}
}
return $o;
}
function dumpWithoutParent($o, $alsoStrip=array()) {
$toStrip = array_merge(array("parent"), $alsoStrip);
print_r(stripValue($o, $toStrip));
}
try {
$less = make_less($fname);
if (has("T", "X")) {
$parser = new lessc_parser($less, $fname);
$tree = $parser->parse(file_get_contents($fname));
if (has("X"))
$out = print_r($tree, 1);
else
$out = dumpValue($tree)."\n";
} else {
$out = $less->parse();
}
if (!$fout = array_shift($argv)) {
echo $out;
} else {
file_put_contents($fout, $out);
}
} catch (exception $ex) {
err($fa.$ex->getMessage());
exit(1);
}
PK"d�[���WWscssphp/composer.jsonnu�[���{
"name": "leafo/scssphp",
"type": "library",
"description": "scssphp is a compiler for SCSS written
in PHP.",
"keywords": ["css", "stylesheet",
"scss", "sass", "less"],
"homepage": "http://leafo.github.io/scssphp/",
"license": [
"MIT"
],
"authors": [
{
"name": "Leaf Corcoran",
"email": "leafot@gmail.com",
"homepage": "http://leafo.net"
}
],
"autoload": {
"psr-4": { "Leafo\\ScssPhp\\": "src/"
}
},
"autoload-dev": {
"psr-4": { "Leafo\\ScssPhp\\Test\\":
"tests/" }
},
"require": {
"php": "^5.4.0 || ^7"
},
"require-dev": {
"squizlabs/php_codesniffer": "~2.5",
"phpunit/phpunit": "~4.6",
"twbs/bootstrap": "~4.3",
"zurb/foundation": "~6.5"
},
"bin": ["bin/pscss"],
"archive": {
"exclude": [
"/Makefile",
"/.gitattributes",
"/.gitignore",
"/.travis.yml",
"/phpunit.xml.dist",
"/tests"
]
},
"abandoned": "scssphp/scssphp"
}
PK"d�[��zb�6�6scssphp/example/Server.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2017 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp;
use Leafo\ScssPhp\Compiler;
use Leafo\ScssPhp\Exception\ServerException;
use Leafo\ScssPhp\Version;
/**
* Server
*
* @author Leaf Corcoran <leafot@gmail.com>
*/
class Server
{
/**
* @var boolean
*/
private $showErrorsAsCSS;
/**
* @var string
*/
private $dir;
/**
* @var string
*/
private $cacheDir;
/**
* @var \Leafo\ScssPhp\Compiler
*/
private $scss;
/**
* Join path components
*
* @param string $left Path component, left of the directory separator
* @param string $right Path component, right of the directory
separator
*
* @return string
*/
protected function join($left, $right)
{
return rtrim($left, '/\\') . DIRECTORY_SEPARATOR .
ltrim($right, '/\\');
}
/**
* Get name of requested .scss file
*
* @return string|null
*/
protected function inputName()
{
switch (true) {
case isset($_GET['p']):
return $_GET['p'];
case isset($_SERVER['PATH_INFO']):
return $_SERVER['PATH_INFO'];
case isset($_SERVER['DOCUMENT_URI']):
return substr($_SERVER['DOCUMENT_URI'],
strlen($_SERVER['SCRIPT_NAME']));
}
}
/**
* Get path to requested .scss file
*
* @return string
*/
protected function findInput()
{
if (($input = $this->inputName())
&& strpos($input, '..') === false
&& substr($input, -5) === '.scss'
) {
$name = $this->join($this->dir, $input);
if (is_file($name) && is_readable($name)) {
return $name;
}
}
return false;
}
/**
* Get path to cached .css file
*
* @return string
*/
protected function cacheName($fname)
{
return $this->join($this->cacheDir, md5($fname) .
'.css');
}
/**
* Get path to meta data
*
* @return string
*/
protected function metadataName($out)
{
return $out . '.meta';
}
/**
* Determine whether .scss file needs to be re-compiled.
*
* @param string $out Output path
* @param string $etag ETag
*
* @return boolean True if compile required.
*/
protected function needsCompile($out, &$etag)
{
if (! is_file($out)) {
return true;
}
$mtime = filemtime($out);
$metadataName = $this->metadataName($out);
if (is_readable($metadataName)) {
$metadata = unserialize(file_get_contents($metadataName));
foreach ($metadata['imports'] as $import =>
$originalMtime) {
$currentMtime = filemtime($import);
if ($currentMtime !== $originalMtime || $currentMtime >
$mtime) {
return true;
}
}
$metaVars =
crc32(serialize($this->scss->getVariables()));
if ($metaVars !== $metadata['vars']) {
return true;
}
$etag = $metadata['etag'];
return false;
}
return true;
}
/**
* Get If-Modified-Since header from client request
*
* @return string|null
*/
protected function getIfModifiedSinceHeader()
{
$modifiedSince = null;
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
$modifiedSince = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
if (false !== ($semicolonPos = strpos($modifiedSince,
';'))) {
$modifiedSince = substr($modifiedSince, 0, $semicolonPos);
}
}
return $modifiedSince;
}
/**
* Get If-None-Match header from client request
*
* @return string|null
*/
protected function getIfNoneMatchHeader()
{
$noneMatch = null;
if (isset($_SERVER['HTTP_IF_NONE_MATCH'])) {
$noneMatch = $_SERVER['HTTP_IF_NONE_MATCH'];
}
return $noneMatch;
}
/**
* Compile .scss file
*
* @param string $in Input path (.scss)
* @param string $out Output path (.css)
*
* @return array
*/
protected function compile($in, $out)
{
$start = microtime(true);
$css = $this->scss->compile(file_get_contents($in), $in);
$elapsed = round((microtime(true) - $start), 4);
$v = Version::VERSION;
$t = gmdate('r');
$css = "/* compiled by scssphp $v on $t (${elapsed}s)
*/\n\n" . $css;
$etag = md5($css);
file_put_contents($out, $css);
file_put_contents(
$this->metadataName($out),
serialize([
'etag' => $etag,
'imports' =>
$this->scss->getParsedFiles(),
'vars' =>
crc32(serialize($this->scss->getVariables())),
])
);
return [$css, $etag];
}
/**
* Format error as a pseudo-element in CSS
*
* @param \Exception $error
*
* @return string
*/
protected function createErrorCSS(\Exception $error)
{
$message = str_replace(
["'", "\n"],
["\\'", "\\A"],
$error->getfile() . ":\n\n" .
$error->getMessage()
);
return "body { display: none !important; }
html:after {
background: white;
color: black;
content: '$message';
display: block !important;
font-family: mono;
padding: 1em;
white-space: pre;
}";
}
/**
* Render errors as a pseudo-element within valid CSS, displaying the
errors on any
* page that includes this CSS.
*
* @param boolean $show
*/
public function showErrorsAsCSS($show = true)
{
$this->showErrorsAsCSS = $show;
}
/**
* Compile .scss file
*
* @param string $in Input file (.scss)
* @param string $out Output file (.css) optional
*
* @return string|bool
*
* @throws \Leafo\ScssPhp\Exception\ServerException
*/
public function compileFile($in, $out = null)
{
if (! is_readable($in)) {
throw new ServerException('load error: failed to find
' . $in);
}
$pi = pathinfo($in);
$this->scss->addImportPath($pi['dirname'] .
'/');
$compiled = $this->scss->compile(file_get_contents($in),
$in);
if ($out !== null) {
return file_put_contents($out, $compiled);
}
return $compiled;
}
/**
* Check if file need compiling
*
* @param string $in Input file (.scss)
* @param string $out Output file (.css)
*
* @return bool
*/
public function checkedCompile($in, $out)
{
if (! is_file($out) || filemtime($in) > filemtime($out)) {
$this->compileFile($in, $out);
return true;
}
return false;
}
/**
* Compile requested scss and serve css. Outputs HTTP response.
*
* @param string $salt Prefix a string to the filename for creating the
cache name hash
*/
public function serve($salt = '')
{
$protocol = isset($_SERVER['SERVER_PROTOCOL'])
? $_SERVER['SERVER_PROTOCOL']
: 'HTTP/1.0';
if ($input = $this->findInput()) {
$output = $this->cacheName($salt . $input);
$etag = $noneMatch = trim($this->getIfNoneMatchHeader(),
'"');
if ($this->needsCompile($output, $etag)) {
try {
list($css, $etag) = $this->compile($input, $output);
$lastModified = gmdate('r',
filemtime($output));
header('Last-Modified: ' . $lastModified);
header('Content-type: text/css');
header('ETag: "' . $etag .
'"');
echo $css;
} catch (\Exception $e) {
if ($this->showErrorsAsCSS) {
header('Content-type: text/css');
echo $this->createErrorCSS($e);
} else {
header($protocol . ' 500 Internal Server
Error');
header('Content-type: text/plain');
echo 'Parse error: ' .
$e->getMessage() . "\n";
}
}
return;
}
header('X-SCSS-Cache: true');
header('Content-type: text/css');
header('ETag: "' . $etag . '"');
if ($etag === $noneMatch) {
header($protocol . ' 304 Not Modified');
return;
}
$modifiedSince = $this->getIfModifiedSinceHeader();
$mtime = filemtime($output);
if (strtotime($modifiedSince) === $mtime) {
header($protocol . ' 304 Not Modified');
return;
}
$lastModified = gmdate('r', $mtime);
header('Last-Modified: ' . $lastModified);
echo file_get_contents($output);
return;
}
header($protocol . ' 404 Not Found');
header('Content-type: text/plain');
$v = Version::VERSION;
echo "/* INPUT NOT FOUND scss $v */\n";
}
/**
* Based on explicit input/output files does a full change check on
cache before compiling.
*
* @param string $in
* @param string $out
* @param boolean $force
*
* @return string Compiled CSS results
*
* @throws \Leafo\ScssPhp\Exception\ServerException
*/
public function checkedCachedCompile($in, $out, $force = false)
{
if (! is_file($in) || ! is_readable($in)) {
throw new ServerException('Invalid or unreadable input
file specified.');
}
if (is_dir($out) || ! is_writable(file_exists($out) ? $out :
dirname($out))) {
throw new ServerException('Invalid or unwritable output
file specified.');
}
if ($force || $this->needsCompile($out, $etag)) {
list($css, $etag) = $this->compile($in, $out);
} else {
$css = file_get_contents($out);
}
return $css;
}
/**
* Execute scssphp on a .scss file or a scssphp cache structure
*
* The scssphp cache structure contains information about a specific
* scss file having been parsed. It can be used as a hint for future
* calls to determine whether or not a rebuild is required.
*
* The cache structure contains two important keys that may be used
* externally:
*
* compiled: The final compiled CSS
* updated: The time (in seconds) the CSS was last compiled
*
* The cache structure is a plain-ol' PHP associative array and
can
* be serialized and unserialized without a hitch.
*
* @param mixed $in Input
* @param boolean $force Force rebuild?
*
* @return array scssphp cache structure
*/
public function cachedCompile($in, $force = false)
{
// assume no root
$root = null;
if (is_string($in)) {
$root = $in;
} elseif (is_array($in) and isset($in['root'])) {
if ($force or ! isset($in['files'])) {
// If we are forcing a recompile or if for some reason the
// structure does not contain any file information we
should
// specify the root to trigger a rebuild.
$root = $in['root'];
} elseif (isset($in['files']) and
is_array($in['files'])) {
foreach ($in['files'] as $fname => $ftime) {
if (! file_exists($fname) or filemtime($fname) >
$ftime) {
// One of the files we knew about previously has
changed
// so we should look at our incoming root again.
$root = $in['root'];
break;
}
}
}
} else {
// TODO: Throw an exception? We got neither a string nor
something
// that looks like a compatible lessphp cache structure.
return null;
}
if ($root !== null) {
// If we have a root value which means we should rebuild.
$out = [];
$out['root'] = $root;
$out['compiled'] = $this->compileFile($root);
$out['files'] = $this->scss->getParsedFiles();
$out['updated'] = time();
return $out;
} else {
// No changes, pass back the structure
// we were given initially.
return $in;
}
}
/**
* Constructor
*
* @param string $dir Root directory to
.scss files
* @param string $cacheDir Cache directory
* @param \Leafo\ScssPhp\Compiler|null $scss SCSS compiler instance
*/
public function __construct($dir, $cacheDir = null, $scss = null)
{
$this->dir = $dir;
if (! isset($cacheDir)) {
$cacheDir = $this->join($dir, 'scss_cache');
}
$this->cacheDir = $cacheDir;
if (! is_dir($this->cacheDir)) {
throw new ServerException('Cache directory doesn\'t
exist: ' . $cacheDir);
}
if (! isset($scss)) {
$scss = new Compiler();
$scss->setImportPaths($this->dir);
}
$this->scss = $scss;
$this->showErrorsAsCSS = false;
date_default_timezone_set('UTC');
}
}
PK"d�[^��kkscssphp/scss.inc.phpnu�[���<?php
if (version_compare(PHP_VERSION, '5.4') < 0) {
throw new \Exception('scssphp requires PHP 5.4 or above');
}
if (! class_exists('Leafo\ScssPhp\Version', false)) {
include_once __DIR__ . '/src/Base/Range.php';
include_once __DIR__ . '/src/Block.php';
include_once __DIR__ . '/src/Cache.php';
include_once __DIR__ . '/src/Colors.php';
include_once __DIR__ . '/src/Compiler.php';
include_once __DIR__ . '/src/Compiler/Environment.php';
include_once __DIR__ .
'/src/Exception/CompilerException.php';
include_once __DIR__ . '/src/Exception/ParserException.php';
include_once __DIR__ . '/src/Exception/RangeException.php';
include_once __DIR__ . '/src/Exception/ServerException.php';
include_once __DIR__ . '/src/Formatter.php';
include_once __DIR__ . '/src/Formatter/Compact.php';
include_once __DIR__ . '/src/Formatter/Compressed.php';
include_once __DIR__ . '/src/Formatter/Crunched.php';
include_once __DIR__ . '/src/Formatter/Debug.php';
include_once __DIR__ . '/src/Formatter/Expanded.php';
include_once __DIR__ . '/src/Formatter/Nested.php';
include_once __DIR__ . '/src/Formatter/OutputBlock.php';
include_once __DIR__ . '/src/Node.php';
include_once __DIR__ . '/src/Node/Number.php';
include_once __DIR__ . '/src/Parser.php';
include_once __DIR__ . '/src/SourceMap/Base64.php';
include_once __DIR__ . '/src/SourceMap/Base64VLQ.php';
include_once __DIR__ .
'/src/SourceMap/SourceMapGenerator.php';
include_once __DIR__ . '/src/Type.php';
include_once __DIR__ . '/src/Util.php';
include_once __DIR__ . '/src/Version.php';
}
PK"d�[�)[\scssphp/src/Base/Range.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2015-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Base;
/**
* Range
*
* @author Anthon Pang <anthon.pang@gmail.com>
*/
class Range
{
public $first;
public $last;
/**
* Initialize range
*
* @param integer|float $first
* @param integer|float $last
*/
public function __construct($first, $last)
{
$this->first = $first;
$this->last = $last;
}
/**
* Test for inclusion in range
*
* @param integer|float $value
*
* @return boolean
*/
public function includes($value)
{
return $value >= $this->first && $value <=
$this->last;
}
}
PK"d�[a֊xxscssphp/src/Block.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp;
/**
* Block
*
* @author Anthon Pang <anthon.pang@gmail.com>
*/
class Block
{
/**
* @var string
*/
public $type;
/**
* @var \Leafo\ScssPhp\Block
*/
public $parent;
/**
* @var string
*/
public $sourceName;
/**
* @var integer
*/
public $sourceIndex;
/**
* @var integer
*/
public $sourceLine;
/**
* @var integer
*/
public $sourceColumn;
/**
* @var array
*/
public $selectors;
/**
* @var array
*/
public $comments;
/**
* @var array
*/
public $children;
/**
* @var \Leafo\ScssPhp\Block
*/
public $selfParent;
}
PK"d�[���GGscssphp/src/Cache.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp;
use Exception;
/**
* The scss cache manager.
*
* In short:
*
* allow to put in cache/get from cache a generic result from a known
operation on a generic dataset,
* taking in account options that affects the result
*
* The cache manager is agnostic about data format and only the operation
is expected to be described by string
*
*/
/**
* SCSS cache
*
* @author Cedric Morin
*/
class Cache
{
const CACHE_VERSION = 0;
// directory used for storing data
public static $cacheDir = false;
// prefix for the storing data
public static $prefix = 'scssphp_';
// force a refresh : 'once' for refreshing the first hit on a
cache only, true to never use the cache in this hit
public static $forceFefresh = false;
// specifies the number of seconds after which data cached will be seen
as 'garbage' and potentially cleaned up
public static $gcLifetime = 604800;
// array of already refreshed cache if $forceFefresh==='once'
protected static $refreshed = [];
/**
* Constructor
*
* @param array $options
*/
public function __construct($options)
{
// check $cacheDir
if (isset($options['cache_dir'])) {
self::$cacheDir = $options['cache_dir'];
}
if (empty(self::$cacheDir)) {
throw new Exception('cache_dir not set');
}
if (isset($options['prefix'])) {
self::$prefix = $options['prefix'];
}
if (empty(self::$prefix)) {
throw new Exception('prefix not set');
}
if (isset($options['forceRefresh'])) {
self::$forceFefresh = $options['force_refresh'];
}
self::checkCacheDir();
}
/**
* Get the cached result of $operation on $what,
* which is known as dependant from the content of $options
*
* @param string $operation parse, compile...
* @param mixed $what content key (e.g., filename to be
treated)
* @param array $options any option that affect the operation
result on the content
* @param integer $lastModified last modified timestamp
*
* @return mixed
*
* @throws \Exception
*/
public function getCache($operation, $what, $options = [],
$lastModified = null)
{
$fileCache = self::$cacheDir . self::cacheName($operation, $what,
$options);
if ((! self::$forceRefresh || (self::$forceRefresh ===
'once' && isset(self::$refreshed[$fileCache])))
&& file_exists($fileCache)
) {
$cacheTime = filemtime($fileCache);
if ((is_null($lastModified) || $cacheTime > $lastModified)
&& $cacheTime + self::$gcLifetime > time()
) {
$c = file_get_contents($fileCache);
$c = unserialize($c);
if (is_array($c) && isset($c['value'])) {
return $c['value'];
}
}
}
return null;
}
/**
* Put in cache the result of $operation on $what,
* which is known as dependant from the content of $options
*
* @param string $operation
* @param mixed $what
* @param mixed $value
* @param array $options
*/
public function setCache($operation, $what, $value, $options = [])
{
$fileCache = self::$cacheDir . self::cacheName($operation, $what,
$options);
$c = ['value' => $value];
$c = serialize($c);
file_put_contents($fileCache, $c);
if (self::$forceRefresh === 'once') {
self::$refreshed[$fileCache] = true;
}
}
/**
* Get the cache name for the caching of $operation on $what,
* which is known as dependant from the content of $options
*
* @param string $operation
* @param mixed $what
* @param array $options
*
* @return string
*/
private static function cacheName($operation, $what, $options = [])
{
$t = [
'version' => self::CACHE_VERSION,
'operation' => $operation,
'what' => $what,
'options' => $options
];
$t = self::$prefix
. sha1(json_encode($t))
. ".$operation"
. ".scsscache";
return $t;
}
/**
* Check that the cache dir exists and is writeable
*
* @throws \Exception
*/
public static function checkCacheDir()
{
self::$cacheDir = str_replace('\\', '/',
self::$cacheDir);
self::$cacheDir = rtrim(self::$cacheDir, '/') .
'/';
if (! file_exists(self::$cacheDir)) {
if (! mkdir(self::$cacheDir)) {
throw new Exception('Cache directory couldn\'t be
created: ' . self::$cacheDir);
}
} elseif (! is_dir(self::$cacheDir)) {
throw new Exception('Cache directory doesn\'t exist:
' . self::$cacheDir);
} elseif (! is_writable(self::$cacheDir)) {
throw new Exception('Cache directory isn\'t writable:
' . self::$cacheDir);
}
}
/**
* Delete unused cached files
*/
public static function cleanCache()
{
static $clean = false;
if ($clean || empty(self::$cacheDir)) {
return;
}
$clean = true;
// only remove files with extensions created by SCSSPHP Cache
// css files removed based on the list files
$removeTypes = ['scsscache' => 1];
$files = scandir(self::$cacheDir);
if (! $files) {
return;
}
$checkTime = time() - self::$gcLifetime;
foreach ($files as $file) {
// don't delete if the file wasn't created with
SCSSPHP Cache
if (strpos($file, self::$prefix) !== 0) {
continue;
}
$parts = explode('.', $file);
$type = array_pop($parts);
if (! isset($removeTypes[$type])) {
continue;
}
$fullPath = self::$cacheDir . $file;
$mtime = filemtime($fullPath);
// don't delete if it's a relatively new file
if ($mtime > $checkTime) {
continue;
}
unlink($fullPath);
}
}
}
PK"d�[ߗ��((scssphp/src/Colors.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp;
/**
* CSS Colors
*
* @author Leaf Corcoran <leafot@gmail.com>
*/
class Colors
{
/**
* CSS Colors
*
* @see http://www.w3.org/TR/css3-color
*
* @var array
*/
public static $cssColors = [
'aliceblue' => '240,248,255',
'antiquewhite' => '250,235,215',
'aqua' => '0,255,255',
'aquamarine' => '127,255,212',
'azure' => '240,255,255',
'beige' => '245,245,220',
'bisque' => '255,228,196',
'black' => '0,0,0',
'blanchedalmond' => '255,235,205',
'blue' => '0,0,255',
'blueviolet' => '138,43,226',
'brown' => '165,42,42',
'burlywood' => '222,184,135',
'cadetblue' => '95,158,160',
'chartreuse' => '127,255,0',
'chocolate' => '210,105,30',
'coral' => '255,127,80',
'cornflowerblue' => '100,149,237',
'cornsilk' => '255,248,220',
'crimson' => '220,20,60',
'cyan' => '0,255,255',
'darkblue' => '0,0,139',
'darkcyan' => '0,139,139',
'darkgoldenrod' => '184,134,11',
'darkgray' => '169,169,169',
'darkgreen' => '0,100,0',
'darkgrey' => '169,169,169',
'darkkhaki' => '189,183,107',
'darkmagenta' => '139,0,139',
'darkolivegreen' => '85,107,47',
'darkorange' => '255,140,0',
'darkorchid' => '153,50,204',
'darkred' => '139,0,0',
'darksalmon' => '233,150,122',
'darkseagreen' => '143,188,143',
'darkslateblue' => '72,61,139',
'darkslategray' => '47,79,79',
'darkslategrey' => '47,79,79',
'darkturquoise' => '0,206,209',
'darkviolet' => '148,0,211',
'deeppink' => '255,20,147',
'deepskyblue' => '0,191,255',
'dimgray' => '105,105,105',
'dimgrey' => '105,105,105',
'dodgerblue' => '30,144,255',
'firebrick' => '178,34,34',
'floralwhite' => '255,250,240',
'forestgreen' => '34,139,34',
'fuchsia' => '255,0,255',
'gainsboro' => '220,220,220',
'ghostwhite' => '248,248,255',
'gold' => '255,215,0',
'goldenrod' => '218,165,32',
'gray' => '128,128,128',
'green' => '0,128,0',
'greenyellow' => '173,255,47',
'grey' => '128,128,128',
'honeydew' => '240,255,240',
'hotpink' => '255,105,180',
'indianred' => '205,92,92',
'indigo' => '75,0,130',
'ivory' => '255,255,240',
'khaki' => '240,230,140',
'lavender' => '230,230,250',
'lavenderblush' => '255,240,245',
'lawngreen' => '124,252,0',
'lemonchiffon' => '255,250,205',
'lightblue' => '173,216,230',
'lightcoral' => '240,128,128',
'lightcyan' => '224,255,255',
'lightgoldenrodyellow' => '250,250,210',
'lightgray' => '211,211,211',
'lightgreen' => '144,238,144',
'lightgrey' => '211,211,211',
'lightpink' => '255,182,193',
'lightsalmon' => '255,160,122',
'lightseagreen' => '32,178,170',
'lightskyblue' => '135,206,250',
'lightslategray' => '119,136,153',
'lightslategrey' => '119,136,153',
'lightsteelblue' => '176,196,222',
'lightyellow' => '255,255,224',
'lime' => '0,255,0',
'limegreen' => '50,205,50',
'linen' => '250,240,230',
'magenta' => '255,0,255',
'maroon' => '128,0,0',
'mediumaquamarine' => '102,205,170',
'mediumblue' => '0,0,205',
'mediumorchid' => '186,85,211',
'mediumpurple' => '147,112,219',
'mediumseagreen' => '60,179,113',
'mediumslateblue' => '123,104,238',
'mediumspringgreen' => '0,250,154',
'mediumturquoise' => '72,209,204',
'mediumvioletred' => '199,21,133',
'midnightblue' => '25,25,112',
'mintcream' => '245,255,250',
'mistyrose' => '255,228,225',
'moccasin' => '255,228,181',
'navajowhite' => '255,222,173',
'navy' => '0,0,128',
'oldlace' => '253,245,230',
'olive' => '128,128,0',
'olivedrab' => '107,142,35',
'orange' => '255,165,0',
'orangered' => '255,69,0',
'orchid' => '218,112,214',
'palegoldenrod' => '238,232,170',
'palegreen' => '152,251,152',
'paleturquoise' => '175,238,238',
'palevioletred' => '219,112,147',
'papayawhip' => '255,239,213',
'peachpuff' => '255,218,185',
'peru' => '205,133,63',
'pink' => '255,192,203',
'plum' => '221,160,221',
'powderblue' => '176,224,230',
'purple' => '128,0,128',
'rebeccapurple' => '102,51,153',
'red' => '255,0,0',
'rosybrown' => '188,143,143',
'royalblue' => '65,105,225',
'saddlebrown' => '139,69,19',
'salmon' => '250,128,114',
'sandybrown' => '244,164,96',
'seagreen' => '46,139,87',
'seashell' => '255,245,238',
'sienna' => '160,82,45',
'silver' => '192,192,192',
'skyblue' => '135,206,235',
'slateblue' => '106,90,205',
'slategray' => '112,128,144',
'slategrey' => '112,128,144',
'snow' => '255,250,250',
'springgreen' => '0,255,127',
'steelblue' => '70,130,180',
'tan' => '210,180,140',
'teal' => '0,128,128',
'thistle' => '216,191,216',
'tomato' => '255,99,71',
'transparent' => '0,0,0,0',
'turquoise' => '64,224,208',
'violet' => '238,130,238',
'wheat' => '245,222,179',
'white' => '255,255,255',
'whitesmoke' => '245,245,245',
'yellow' => '255,255,0',
'yellowgreen' => '154,205,50',
];
}
PK"d�[��ruuu$scssphp/src/Compiler/Environment.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Compiler;
/**
* Compiler environment
*
* @author Anthon Pang <anthon.pang@gmail.com>
*/
class Environment
{
/**
* @var \Leafo\ScssPhp\Block
*/
public $block;
/**
* @var \Leafo\ScssPhp\Compiler\Environment
*/
public $parent;
/**
* @var array
*/
public $store;
/**
* @var array
*/
public $storeUnreduced;
/**
* @var integer
*/
public $depth;
}
PK"d�[h������scssphp/src/Compiler.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp;
use Leafo\ScssPhp\Base\Range;
use Leafo\ScssPhp\Block;
use Leafo\ScssPhp\Cache;
use Leafo\ScssPhp\Colors;
use Leafo\ScssPhp\Compiler\Environment;
use Leafo\ScssPhp\Exception\CompilerException;
use Leafo\ScssPhp\Formatter\OutputBlock;
use Leafo\ScssPhp\Node;
use Leafo\ScssPhp\SourceMap\SourceMapGenerator;
use Leafo\ScssPhp\Type;
use Leafo\ScssPhp\Parser;
use Leafo\ScssPhp\Util;
/**
* The scss compiler and parser.
*
* Converting SCSS to CSS is a three stage process. The incoming file is
parsed
* by `Parser` into a syntax tree, then it is compiled into another tree
* representing the CSS structure by `Compiler`. The CSS tree is fed into a
* formatter, like `Formatter` which then outputs CSS as a string.
*
* During the first compile, all values are *reduced*, which means that
their
* types are brought to the lowest form before being dump as strings. This
* handles math equations, variable dereferences, and the like.
*
* The `compile` function of `Compiler` is the entry point.
*
* In summary:
*
* The `Compiler` class creates an instance of the parser, feeds it SCSS
code,
* then transforms the resulting tree to a CSS tree. This class also holds
the
* evaluation context, such as all available mixins and variables at any
given
* time.
*
* The `Parser` class is only concerned with parsing its input.
*
* The `Formatter` takes a CSS tree, and dumps it to a formatted string,
* handling things like indentation.
*/
/**
* SCSS compiler
*
* @author Leaf Corcoran <leafot@gmail.com>
*/
class Compiler
{
const LINE_COMMENTS = 1;
const DEBUG_INFO = 2;
const WITH_RULE = 1;
const WITH_MEDIA = 2;
const WITH_SUPPORTS = 4;
const WITH_ALL = 7;
const SOURCE_MAP_NONE = 0;
const SOURCE_MAP_INLINE = 1;
const SOURCE_MAP_FILE = 2;
/**
* @var array
*/
static protected $operatorNames = [
'+' => 'add',
'-' => 'sub',
'*' => 'mul',
'/' => 'div',
'%' => 'mod',
'==' => 'eq',
'!=' => 'neq',
'<' => 'lt',
'>' => 'gt',
'<=' => 'lte',
'>=' => 'gte',
'<=>' => 'cmp',
];
/**
* @var array
*/
static protected $namespaces = [
'special' => '%',
'mixin' => '@',
'function' => '^',
];
static public $true = [Type::T_KEYWORD, 'true'];
static public $false = [Type::T_KEYWORD, 'false'];
static public $null = [Type::T_NULL];
static public $nullString = [Type::T_STRING, '', []];
static public $defaultValue = [Type::T_KEYWORD, ''];
static public $selfSelector = [Type::T_SELF];
static public $emptyList = [Type::T_LIST, '', []];
static public $emptyMap = [Type::T_MAP, [], []];
static public $emptyString = [Type::T_STRING, '"', []];
static public $with = [Type::T_KEYWORD, 'with'];
static public $without = [Type::T_KEYWORD, 'without'];
protected $importPaths = [''];
protected $importCache = [];
protected $importedFiles = [];
protected $userFunctions = [];
protected $registeredVars = [];
protected $registeredFeatures = [
'extend-selector-pseudoclass' => false,
'at-error' => true,
'units-level-3' => false,
'global-variable-shadowing' => false,
];
protected $encoding = null;
protected $lineNumberStyle = null;
protected $sourceMap = self::SOURCE_MAP_NONE;
protected $sourceMapOptions = [];
/**
* @var string|\Leafo\ScssPhp\Formatter
*/
protected $formatter = 'Leafo\ScssPhp\Formatter\Nested';
protected $rootEnv;
protected $rootBlock;
/**
* @var \Leafo\ScssPhp\Compiler\Environment
*/
protected $env;
protected $scope;
protected $storeEnv;
protected $charsetSeen;
protected $sourceNames;
protected $cache;
protected $indentLevel;
protected $extends;
protected $extendsMap;
protected $parsedFiles;
protected $parser;
protected $sourceIndex;
protected $sourceLine;
protected $sourceColumn;
protected $stderr;
protected $shouldEvaluate;
protected $ignoreErrors;
protected $callStack = [];
/**
* Constructor
*/
public function __construct($cacheOptions = null)
{
$this->parsedFiles = [];
$this->sourceNames = [];
if ($cacheOptions) {
$this->cache = new Cache($cacheOptions);
}
}
public function getCompileOptions()
{
$options = [
'importPaths' => $this->importPaths,
'registeredVars' => $this->registeredVars,
'registeredFeatures' =>
$this->registeredFeatures,
'encoding' => $this->encoding,
'sourceMap' =>
serialize($this->sourceMap),
'sourceMapOptions' =>
$this->sourceMapOptions,
'formatter' => $this->formatter,
];
return $options;
}
/**
* Compile scss
*
* @api
*
* @param string $code
* @param string $path
*
* @return string
*/
public function compile($code, $path = null)
{
if ($this->cache) {
$cacheKey = ($path ? $path : "(stdin)") .
":" . md5($code);
$compileOptions = $this->getCompileOptions();
$cache = $this->cache->getCache("compile",
$cacheKey, $compileOptions);
if (is_array($cache)
&& isset($cache['dependencies'])
&& isset($cache['out'])
) {
// check if any dependency file changed before accepting
the cache
foreach ($cache['dependencies'] as $file =>
$mtime) {
if (! file_exists($file)
|| filemtime($file) !== $mtime
) {
unset($cache);
break;
}
}
if (isset($cache)) {
return $cache['out'];
}
}
}
$this->indentLevel = -1;
$this->extends = [];
$this->extendsMap = [];
$this->sourceIndex = null;
$this->sourceLine = null;
$this->sourceColumn = null;
$this->env = null;
$this->scope = null;
$this->storeEnv = null;
$this->charsetSeen = null;
$this->shouldEvaluate = null;
$this->stderr = fopen('php://stderr',
'w');
$this->parser = $this->parserFactory($path);
$tree = $this->parser->parse($code);
$this->parser = null;
$this->formatter = new $this->formatter();
$this->rootBlock = null;
$this->rootEnv = $this->pushEnv($tree);
$this->injectVariables($this->registeredVars);
$this->compileRoot($tree);
$this->popEnv();
$sourceMapGenerator = null;
if ($this->sourceMap) {
if (is_object($this->sourceMap) &&
$this->sourceMap instanceof SourceMapGenerator) {
$sourceMapGenerator = $this->sourceMap;
$this->sourceMap = self::SOURCE_MAP_FILE;
} elseif ($this->sourceMap !== self::SOURCE_MAP_NONE) {
$sourceMapGenerator = new
SourceMapGenerator($this->sourceMapOptions);
}
}
$out = $this->formatter->format($this->scope,
$sourceMapGenerator);
if (! empty($out) && $this->sourceMap &&
$this->sourceMap !== self::SOURCE_MAP_NONE) {
$sourceMap = $sourceMapGenerator->generateJson();
$sourceMapUrl = null;
switch ($this->sourceMap) {
case self::SOURCE_MAP_INLINE:
$sourceMapUrl =
sprintf('data:application/json,%s',
Util::encodeURIComponent($sourceMap));
break;
case self::SOURCE_MAP_FILE:
$sourceMapUrl =
$sourceMapGenerator->saveMap($sourceMap);
break;
}
$out .= sprintf('/*# sourceMappingURL=%s */',
$sourceMapUrl);
}
if ($this->cache && isset($cacheKey) &&
isset($compileOptions)) {
$v = [
'dependencies' => $this->getParsedFiles(),
'out' => &$out,
];
$this->cache->setCache("compile", $cacheKey,
$v, $compileOptions);
}
return $out;
}
/**
* Instantiate parser
*
* @param string $path
*
* @return \Leafo\ScssPhp\Parser
*/
protected function parserFactory($path)
{
$parser = new Parser($path, count($this->sourceNames),
$this->encoding, $this->cache);
$this->sourceNames[] = $path;
$this->addParsedFile($path);
return $parser;
}
/**
* Is self extend?
*
* @param array $target
* @param array $origin
*
* @return boolean
*/
protected function isSelfExtend($target, $origin)
{
foreach ($origin as $sel) {
if (in_array($target, $sel)) {
return true;
}
}
return false;
}
/**
* Push extends
*
* @param array $target
* @param array $origin
* @param \stdClass $block
*/
protected function pushExtends($target, $origin, $block)
{
if ($this->isSelfExtend($target, $origin)) {
return;
}
$i = count($this->extends);
$this->extends[] = [$target, $origin, $block];
foreach ($target as $part) {
if (isset($this->extendsMap[$part])) {
$this->extendsMap[$part][] = $i;
} else {
$this->extendsMap[$part] = [$i];
}
}
}
/**
* Make output block
*
* @param string $type
* @param array $selectors
*
* @return \Leafo\ScssPhp\Formatter\OutputBlock
*/
protected function makeOutputBlock($type, $selectors = null)
{
$out = new OutputBlock;
$out->type = $type;
$out->lines = [];
$out->children = [];
$out->parent = $this->scope;
$out->selectors = $selectors;
$out->depth = $this->env->depth;
if ($this->env->block instanceof Block) {
$out->sourceName = $this->env->block->sourceName;
$out->sourceLine = $this->env->block->sourceLine;
$out->sourceColumn =
$this->env->block->sourceColumn;
} else {
$out->sourceName = null;
$out->sourceLine = null;
$out->sourceColumn = null;
}
return $out;
}
/**
* Compile root
*
* @param \Leafo\ScssPhp\Block $rootBlock
*/
protected function compileRoot(Block $rootBlock)
{
$this->rootBlock = $this->scope =
$this->makeOutputBlock(Type::T_ROOT);
$this->compileChildrenNoReturn($rootBlock->children,
$this->scope);
$this->flattenSelectors($this->scope);
$this->missingSelectors();
}
/**
* Report missing selectors
*/
protected function missingSelectors()
{
foreach ($this->extends as $extend) {
if (isset($extend[3])) {
continue;
}
list($target, $origin, $block) = $extend;
// ignore if !optional
if ($block[2]) {
continue;
}
$target = implode(' ', $target);
$origin = $this->collapseSelectors($origin);
$this->sourceLine = $block[Parser::SOURCE_LINE];
$this->throwError("\"$origin\" failed to
@extend \"$target\". The selector \"$target\" was not
found.");
}
}
/**
* Flatten selectors
*
* @param \Leafo\ScssPhp\Formatter\OutputBlock $block
* @param string $parentKey
*/
protected function flattenSelectors(OutputBlock $block, $parentKey =
null)
{
if ($block->selectors) {
$selectors = [];
foreach ($block->selectors as $s) {
$selectors[] = $s;
if (! is_array($s)) {
continue;
}
// check extends
if (! empty($this->extendsMap)) {
$this->matchExtends($s, $selectors);
// remove duplicates
array_walk($selectors, function (&$value) {
$value = serialize($value);
});
$selectors = array_unique($selectors);
array_walk($selectors, function (&$value) {
$value = unserialize($value);
});
}
}
$block->selectors = [];
$placeholderSelector = false;
foreach ($selectors as $selector) {
if ($this->hasSelectorPlaceholder($selector)) {
$placeholderSelector = true;
continue;
}
$block->selectors[] =
$this->compileSelector($selector);
}
if ($placeholderSelector && 0 ===
count($block->selectors) && null !== $parentKey) {
unset($block->parent->children[$parentKey]);
return;
}
}
foreach ($block->children as $key => $child) {
$this->flattenSelectors($child, $key);
}
}
/**
* Glue parts of :not( or :nth-child( ... that are in general splitted
in selectors parts
*
* @param array $parts
*
* @return array
*/
protected function glueFunctionSelectors($parts)
{
$new = [];
foreach ($parts as $part) {
if (is_array($part)) {
$part = $this->glueFunctionSelectors($part);
$new[] = $part;
} else {
// a selector part finishing with a ) is the last part of a
:not( or :nth-child(
// and need to be joined to this
if (count($new) && is_string($new[count($new) - 1])
&& strlen($part) && substr($part, -1)
=== ')' && strpos($part, '(') === false
) {
$new[count($new) - 1] .= $part;
} else {
$new[] = $part;
}
}
}
return $new;
}
/**
* Match extends
*
* @param array $selector
* @param array $out
* @param integer $from
* @param boolean $initial
*/
protected function matchExtends($selector, &$out, $from = 0,
$initial = true)
{
static $partsPile = [];
$selector = $this->glueFunctionSelectors($selector);
foreach ($selector as $i => $part) {
if ($i < $from) {
continue;
}
// check that we are not building an infinite loop of
extensions
// if the new part is just including a previous part don't
try to extend anymore
if (count($part) > 1) {
foreach ($partsPile as $previousPart) {
if (! count(array_diff($previousPart, $part))) {
continue 2;
}
}
}
if ($this->matchExtendsSingle($part, $origin)) {
$partsPile[] = $part;
$after = array_slice($selector, $i + 1);
$before = array_slice($selector, 0, $i);
list($before, $nonBreakableBefore) =
$this->extractRelationshipFromFragment($before);
foreach ($origin as $new) {
$k = 0;
// remove shared parts
if (count($new) > 1) {
while ($k < $i && isset($new[$k])
&& $selector[$k] === $new[$k]) {
$k++;
}
}
$replacement = [];
$tempReplacement = $k > 0 ? array_slice($new, $k) :
$new;
for ($l = count($tempReplacement) - 1; $l >= 0;
$l--) {
$slice = [];
foreach ($tempReplacement[$l] as $chunk) {
if (! in_array($chunk, $slice)) {
$slice[] = $chunk;
}
}
array_unshift($replacement, $slice);
if (!
$this->isImmediateRelationshipCombinator(end($slice))) {
break;
}
}
$afterBefore = $l != 0 ? array_slice($tempReplacement,
0, $l) : [];
// Merge shared direct relationships.
$mergedBefore =
$this->mergeDirectRelationships($afterBefore, $nonBreakableBefore);
$result = array_merge(
$before,
$mergedBefore,
$replacement,
$after
);
if ($result === $selector) {
continue;
}
$out[] = $result;
// recursively check for more matches
$startRecurseFrom = count($before) +
min(count($nonBreakableBefore), count($mergedBefore));
$this->matchExtends($result, $out,
$startRecurseFrom, false);
// selector sequence merging
if (! empty($before) && count($new) > 1) {
$preSharedParts = $k > 0 ? array_slice($before,
0, $k) : [];
$postSharedParts = $k > 0 ? array_slice($before,
$k) : $before;
list($betweenSharedParts, $nonBreakable2) =
$this->extractRelationshipFromFragment($afterBefore);
$result2 = array_merge(
$preSharedParts,
$betweenSharedParts,
$postSharedParts,
$nonBreakable2,
$nonBreakableBefore,
$replacement,
$after
);
$out[] = $result2;
}
}
array_pop($partsPile);
}
}
}
/**
* Match extends single
*
* @param array $rawSingle
* @param array $outOrigin
*
* @return boolean
*/
protected function matchExtendsSingle($rawSingle, &$outOrigin)
{
$counts = [];
$single = [];
// simple usual cases, no need to do the whole trick
if (in_array($rawSingle,
[['>'],['+'],['~']])) {
return false;
}
foreach ($rawSingle as $part) {
// matches Number
if (! is_string($part)) {
return false;
}
if (! preg_match('/^[\[.:#%]/', $part) &&
count($single)) {
$single[count($single) - 1] .= $part;
} else {
$single[] = $part;
}
}
$extendingDecoratedTag = false;
if (count($single) > 1) {
$matches = null;
$extendingDecoratedTag = preg_match('/^[a-z0-9]+$/i',
$single[0], $matches) ? $matches[0] : false;
}
foreach ($single as $part) {
if (isset($this->extendsMap[$part])) {
foreach ($this->extendsMap[$part] as $idx) {
$counts[$idx] = isset($counts[$idx]) ? $counts[$idx] +
1 : 1;
}
}
}
$outOrigin = [];
$found = false;
foreach ($counts as $idx => $count) {
list($target, $origin, /* $block */) = $this->extends[$idx];
$origin = $this->glueFunctionSelectors($origin);
// check count
if ($count !== count($target)) {
continue;
}
$this->extends[$idx][3] = true;
$rem = array_diff($single, $target);
foreach ($origin as $j => $new) {
// prevent infinite loop when target extends itself
if ($this->isSelfExtend($single, $origin)) {
return false;
}
$replacement = end($new);
// Extending a decorated tag with another tag is not
possible.
if ($extendingDecoratedTag && $replacement[0] !=
$extendingDecoratedTag &&
preg_match('/^[a-z0-9]+$/i', $replacement[0])
) {
unset($origin[$j]);
continue;
}
$combined = $this->combineSelectorSingle($replacement,
$rem);
if (count(array_diff($combined,
$origin[$j][count($origin[$j]) - 1]))) {
$origin[$j][count($origin[$j]) - 1] = $combined;
}
}
$outOrigin = array_merge($outOrigin, $origin);
$found = true;
}
return $found;
}
/**
* Extract a relationship from the fragment.
*
* When extracting the last portion of a selector we will be left with
a
* fragment which may end with a direction relationship combinator.
This
* method will extract the relationship fragment and return it along
side
* the rest.
*
* @param array $fragment The selector fragment maybe ending with a
direction relationship combinator.
*
* @return array The selector without the relationship fragment if any,
the relationship fragment.
*/
protected function extractRelationshipFromFragment(array $fragment)
{
$parents = [];
$children = [];
$j = $i = count($fragment);
for (;;) {
$children = $j != $i ? array_slice($fragment, $j, $i - $j) :
[];
$parents = array_slice($fragment, 0, $j);
$slice = end($parents);
if (empty($slice) || !
$this->isImmediateRelationshipCombinator($slice[0])) {
break;
}
$j -= 2;
}
return [$parents, $children];
}
/**
* Combine selector single
*
* @param array $base
* @param array $other
*
* @return array
*/
protected function combineSelectorSingle($base, $other)
{
$tag = [];
$out = [];
$wasTag = true;
foreach ([$base, $other] as $single) {
foreach ($single as $part) {
if (preg_match('/^[\[.:#]/', $part)) {
$out[] = $part;
$wasTag = false;
} elseif (preg_match('/^[^_-]/', $part)) {
$tag[] = $part;
$wasTag = true;
} elseif ($wasTag) {
$tag[count($tag) - 1] .= $part;
} else {
$out[count($out) - 1] .= $part;
}
}
}
if (count($tag)) {
array_unshift($out, $tag[0]);
}
return $out;
}
/**
* Compile media
*
* @param \Leafo\ScssPhp\Block $media
*/
protected function compileMedia(Block $media)
{
$this->pushEnv($media);
$mediaQueries =
$this->compileMediaQuery($this->multiplyMedia($this->env));
if (! empty($mediaQueries) && $mediaQueries) {
$previousScope = $this->scope;
$parentScope = $this->mediaParent($this->scope);
foreach ($mediaQueries as $mediaQuery) {
$this->scope = $this->makeOutputBlock(Type::T_MEDIA,
[$mediaQuery]);
$parentScope->children[] = $this->scope;
$parentScope = $this->scope;
}
// top level properties in a media cause it to be wrapped
$needsWrap = false;
foreach ($media->children as $child) {
$type = $child[0];
if ($type !== Type::T_BLOCK &&
$type !== Type::T_MEDIA &&
$type !== Type::T_DIRECTIVE &&
$type !== Type::T_IMPORT
) {
$needsWrap = true;
break;
}
}
if ($needsWrap) {
$wrapped = new Block;
$wrapped->sourceName = $media->sourceName;
$wrapped->sourceIndex = $media->sourceIndex;
$wrapped->sourceLine = $media->sourceLine;
$wrapped->sourceColumn = $media->sourceColumn;
$wrapped->selectors = [];
$wrapped->comments = [];
$wrapped->parent = $media;
$wrapped->children = $media->children;
$media->children = [[Type::T_BLOCK, $wrapped]];
if (isset($this->lineNumberStyle)) {
$annotation =
$this->makeOutputBlock(Type::T_COMMENT);
$annotation->depth = 0;
$file = $this->sourceNames[$media->sourceIndex];
$line = $media->sourceLine;
switch ($this->lineNumberStyle) {
case static::LINE_COMMENTS:
$annotation->lines[] = '/* line '
. $line
. ($file ? ', '
. $file : '')
. ' */';
break;
case static::DEBUG_INFO:
$annotation->lines[] = '@media
-sass-debug-info{'
. ($file ?
'filename{font-family:"' . $file . '"}' :
'')
.
'line{font-family:' . $line . '}}';
break;
}
$this->scope->children[] = $annotation;
}
}
$this->compileChildrenNoReturn($media->children,
$this->scope);
$this->scope = $previousScope;
}
$this->popEnv();
}
/**
* Media parent
*
* @param \Leafo\ScssPhp\Formatter\OutputBlock $scope
*
* @return \Leafo\ScssPhp\Formatter\OutputBlock
*/
protected function mediaParent(OutputBlock $scope)
{
while (! empty($scope->parent)) {
if (! empty($scope->type) && $scope->type !==
Type::T_MEDIA) {
break;
}
$scope = $scope->parent;
}
return $scope;
}
/**
* Compile directive
*
* @param \Leafo\ScssPhp\Block $block
*/
protected function compileDirective(Block $block)
{
$s = '@' . $block->name;
if (! empty($block->value)) {
$s .= ' ' . $this->compileValue($block->value);
}
if ($block->name === 'keyframes' ||
substr($block->name, -10) === '-keyframes') {
$this->compileKeyframeBlock($block, [$s]);
} else {
$this->compileNestedBlock($block, [$s]);
}
}
/**
* Compile at-root
*
* @param \Leafo\ScssPhp\Block $block
*/
protected function compileAtRoot(Block $block)
{
$env = $this->pushEnv($block);
$envs = $this->compactEnv($env);
$without = isset($block->with) ?
$this->compileWith($block->with) : static::WITH_RULE;
// wrap inline selector
if ($block->selector) {
$wrapped = new Block;
$wrapped->sourceName = $block->sourceName;
$wrapped->sourceIndex = $block->sourceIndex;
$wrapped->sourceLine = $block->sourceLine;
$wrapped->sourceColumn = $block->sourceColumn;
$wrapped->selectors = $block->selector;
$wrapped->comments = [];
$wrapped->parent = $block;
$wrapped->children = $block->children;
$wrapped->selfParent = $block->selfParent;
$block->children = [[Type::T_BLOCK, $wrapped]];
$block->selector = null;
}
$selfParent = $block->selfParent;
if (! $block->selfParent->selectors &&
isset($block->parent) && $block->parent &&
isset($block->parent->selectors) &&
$block->parent->selectors
) {
$selfParent = $block->parent;
}
$this->env = $this->filterWithout($envs, $without);
$saveScope = $this->scope;
$this->scope = $this->filterScopeWithout($saveScope,
$without);
// propagate selfParent to the children where they still can be
useful
$this->compileChildrenNoReturn($block->children,
$this->scope, $selfParent);
$this->scope = $this->completeScope($this->scope,
$saveScope);
$this->scope = $saveScope;
$this->env = $this->extractEnv($envs);
$this->popEnv();
}
/**
* Filter at-root scope depending of with/without option
*
* @param \Leafo\ScssPhp\Formatter\OutputBlock $scope
* @param mixed $without
*
* @return mixed
*/
protected function filterScopeWithout($scope, $without)
{
$filteredScopes = [];
if ($scope->type === TYPE::T_ROOT) {
return $scope;
}
// start from the root
while ($scope->parent && $scope->parent->type !==
TYPE::T_ROOT) {
$scope = $scope->parent;
}
for (;;) {
if (! $scope) {
break;
}
if (! $this->isWithout($without, $scope)) {
$s = clone $scope;
$s->children = [];
$s->lines = [];
$s->parent = null;
if ($s->type !== Type::T_MEDIA && $s->type
!== Type::T_DIRECTIVE) {
$s->selectors = [];
}
$filteredScopes[] = $s;
}
if ($scope->children) {
$scope = end($scope->children);
} else {
$scope = null;
}
}
if (! count($filteredScopes)) {
return $this->rootBlock;
}
$newScope = array_shift($filteredScopes);
$newScope->parent = $this->rootBlock;
$this->rootBlock->children[] = $newScope;
$p = &$newScope;
while (count($filteredScopes)) {
$s = array_shift($filteredScopes);
$s->parent = $p;
$p->children[] = &$s;
$p = $s;
}
return $newScope;
}
/**
* found missing selector from a at-root compilation in the previous
scope
* (if at-root is just enclosing a property, the selector is in the
parent tree)
*
* @param \Leafo\ScssPhp\Formatter\OutputBlock $scope
* @param \Leafo\ScssPhp\Formatter\OutputBlock $previousScope
*
* @return mixed
*/
protected function completeScope($scope, $previousScope)
{
if (! $scope->type && (! $scope->selectors || !
count($scope->selectors)) && count($scope->lines)) {
$scope->selectors =
$this->findScopeSelectors($previousScope, $scope->depth);
}
if ($scope->children) {
foreach ($scope->children as $k => $c) {
$scope->children[$k] = $this->completeScope($c,
$previousScope);
}
}
return $scope;
}
/**
* Find a selector by the depth node in the scope
*
* @param \Leafo\ScssPhp\Formatter\OutputBlock $scope
* @param integer $depth
*
* @return array
*/
protected function findScopeSelectors($scope, $depth)
{
if ($scope->depth === $depth && $scope->selectors) {
return $scope->selectors;
}
if ($scope->children) {
foreach (array_reverse($scope->children) as $c) {
if ($s = $this->findScopeSelectors($c, $depth)) {
return $s;
}
}
}
return [];
}
/**
* Compile @at-root's with: inclusion / without: exclusion into
filter flags
*
* @param array $with
*
* @return integer
*/
protected function compileWith($with)
{
static $mapping = [
'rule' => self::WITH_RULE,
'media' => self::WITH_MEDIA,
'supports' => self::WITH_SUPPORTS,
'all' => self::WITH_ALL,
];
// exclude selectors by default
$without = static::WITH_RULE;
if ($this->libMapHasKey([$with, static::$with])) {
$without = static::WITH_ALL;
$list = $this->coerceList($this->libMapGet([$with,
static::$with]));
foreach ($list[2] as $item) {
$keyword =
$this->compileStringContent($this->coerceString($item));
if (array_key_exists($keyword, $mapping)) {
$without &= ~($mapping[$keyword]);
}
}
}
if ($this->libMapHasKey([$with, static::$without])) {
$without = 0;
$list = $this->coerceList($this->libMapGet([$with,
static::$without]));
foreach ($list[2] as $item) {
$keyword =
$this->compileStringContent($this->coerceString($item));
if (array_key_exists($keyword, $mapping)) {
$without |= $mapping[$keyword];
}
}
}
return $without;
}
/**
* Filter env stack
*
* @param array $envs
* @param integer $without
*
* @return \Leafo\ScssPhp\Compiler\Environment
*/
protected function filterWithout($envs, $without)
{
$filtered = [];
foreach ($envs as $e) {
if ($e->block && $this->isWithout($without,
$e->block)) {
$ec = clone $e;
$ec->block = null;
$ec->selectors = [];
$filtered[] = $ec;
} else {
$filtered[] = $e;
}
}
return $this->extractEnv($filtered);
}
/**
* Filter WITH rules
*
* @param integer
$without
* @param \Leafo\ScssPhp\Block|\Leafo\ScssPhp\Formatter\OutputBlock
$block
*
* @return boolean
*/
protected function isWithout($without, $block)
{
if (isset($block->type)) {
if ($block->type === Type::T_MEDIA) {
return ($without & static::WITH_MEDIA) ? true : false;
}
if ($block->type === Type::T_DIRECTIVE) {
if (isset($block->name) && $block->name ===
'supports') {
return ($without & static::WITH_SUPPORTS) ? true :
false;
}
if (isset($block->selectors) &&
strpos(serialize($block->selectors), '@supports') !== false) {
return ($without & static::WITH_SUPPORTS) ? true :
false;
}
}
}
if ((($without & static::WITH_RULE) &&
isset($block->selectors))) {
return true;
}
return false;
}
/**
* Compile keyframe block
*
* @param \Leafo\ScssPhp\Block $block
* @param array $selectors
*/
protected function compileKeyframeBlock(Block $block, $selectors)
{
$env = $this->pushEnv($block);
$envs = $this->compactEnv($env);
$this->env = $this->extractEnv(array_filter($envs, function
(Environment $e) {
return ! isset($e->block->selectors);
}));
$this->scope = $this->makeOutputBlock($block->type,
$selectors);
$this->scope->depth = 1;
$this->scope->parent->children[] = $this->scope;
$this->compileChildrenNoReturn($block->children,
$this->scope);
$this->scope = $this->scope->parent;
$this->env = $this->extractEnv($envs);
$this->popEnv();
}
/**
* Compile nested block
*
* @param \Leafo\ScssPhp\Block $block
* @param array $selectors
*/
protected function compileNestedBlock(Block $block, $selectors)
{
$this->pushEnv($block);
$this->scope = $this->makeOutputBlock($block->type,
$selectors);
$this->scope->parent->children[] = $this->scope;
// wrap assign children in a block
// except for @font-face
if ($block->type !== Type::T_DIRECTIVE || $block->name !==
"font-face") {
// need wrapping?
$needWrapping = false;
foreach ($block->children as $child) {
if ($child[0] === Type::T_ASSIGN) {
$needWrapping = true;
break;
}
}
if ($needWrapping) {
$wrapped = new Block;
$wrapped->sourceName = $block->sourceName;
$wrapped->sourceIndex = $block->sourceIndex;
$wrapped->sourceLine = $block->sourceLine;
$wrapped->sourceColumn = $block->sourceColumn;
$wrapped->selectors = [];
$wrapped->comments = [];
$wrapped->parent = $block;
$wrapped->children = $block->children;
$wrapped->selfParent = $block->selfParent;
$block->children = [[Type::T_BLOCK, $wrapped]];
}
}
$this->compileChildrenNoReturn($block->children,
$this->scope);
$this->scope = $this->scope->parent;
$this->popEnv();
}
/**
* Recursively compiles a block.
*
* A block is analogous to a CSS block in most cases. A single SCSS
document
* is encapsulated in a block when parsed, but it does not have parent
tags
* so all of its children appear on the root level when compiled.
*
* Blocks are made up of selectors and children.
*
* The children of a block are just all the blocks that are defined
within.
*
* Compiling the block involves pushing a fresh environment on the
stack,
* and iterating through the props, compiling each one.
*
* @see Compiler::compileChild()
*
* @param \Leafo\ScssPhp\Block $block
*/
protected function compileBlock(Block $block)
{
$env = $this->pushEnv($block);
$env->selectors = $this->evalSelectors($block->selectors);
$out = $this->makeOutputBlock(null);
if (isset($this->lineNumberStyle) &&
count($env->selectors) && count($block->children)) {
$annotation = $this->makeOutputBlock(Type::T_COMMENT);
$annotation->depth = 0;
$file = $this->sourceNames[$block->sourceIndex];
$line = $block->sourceLine;
switch ($this->lineNumberStyle) {
case static::LINE_COMMENTS:
$annotation->lines[] = '/* line ' . $line
. ($file ? ', ' . $file
: '')
. ' */';
break;
case static::DEBUG_INFO:
$annotation->lines[] = '@media
-sass-debug-info{'
. ($file ?
'filename{font-family:"' . $file . '"}' :
'')
. 'line{font-family:' .
$line . '}}';
break;
}
$this->scope->children[] = $annotation;
}
$this->scope->children[] = $out;
if (count($block->children)) {
$out->selectors = $this->multiplySelectors($env,
$block->selfParent);
// propagate selfParent to the children where they still can be
useful
$selfParentSelectors = null;
if (isset($block->selfParent->selectors)) {
$selfParentSelectors = $block->selfParent->selectors;
$block->selfParent->selectors = $out->selectors;
}
$this->compileChildrenNoReturn($block->children, $out,
$block->selfParent);
// and revert for the following childs of the same block
if ($selfParentSelectors) {
$block->selfParent->selectors = $selfParentSelectors;
}
}
$this->formatter->stripSemicolon($out->lines);
$this->popEnv();
}
/**
* Compile root level comment
*
* @param array $block
*/
protected function compileComment($block)
{
$out = $this->makeOutputBlock(Type::T_COMMENT);
$out->lines[] = is_string($block[1]) ? $block[1] :
$this->compileValue($block[1]);
$this->scope->children[] = $out;
}
/**
* Evaluate selectors
*
* @param array $selectors
*
* @return array
*/
protected function evalSelectors($selectors)
{
$this->shouldEvaluate = false;
$selectors = array_map([$this, 'evalSelector'],
$selectors);
// after evaluating interpolates, we might need a second pass
if ($this->shouldEvaluate) {
$selectors = $this->revertSelfSelector($selectors);
$buffer = $this->collapseSelectors($selectors);
$parser = $this->parserFactory(__METHOD__);
if ($parser->parseSelector($buffer, $newSelectors)) {
$selectors = array_map([$this, 'evalSelector'],
$newSelectors);
}
}
return $selectors;
}
/**
* Evaluate selector
*
* @param array $selector
*
* @return array
*/
protected function evalSelector($selector)
{
return array_map([$this, 'evalSelectorPart'], $selector);
}
/**
* Evaluate selector part; replaces all the interpolates, stripping
quotes
*
* @param array $part
*
* @return array
*/
protected function evalSelectorPart($part)
{
foreach ($part as &$p) {
if (is_array($p) && ($p[0] === Type::T_INTERPOLATE ||
$p[0] === Type::T_STRING)) {
$p = $this->compileValue($p);
// force re-evaluation
if (strpos($p, '&') !== false || strpos($p,
',') !== false) {
$this->shouldEvaluate = true;
}
} elseif (is_string($p) && strlen($p) >= 2
&&
($first = $p[0]) && ($first === '"'
|| $first === "'") &&
substr($p, -1) === $first
) {
$p = substr($p, 1, -1);
}
}
return $this->flattenSelectorSingle($part);
}
/**
* Collapse selectors
*
* @param array $selectors
* @param boolean $selectorFormat
* if false return a collapsed string
* if true return an array description of a structured selector
*
* @return string
*/
protected function collapseSelectors($selectors, $selectorFormat =
false)
{
$parts = [];
foreach ($selectors as $selector) {
$output = [];
$glueNext = false;
foreach ($selector as $node) {
$compound = '';
array_walk_recursive(
$node,
function ($value, $key) use (&$compound) {
$compound .= $value;
}
);
if ($selectorFormat &&
$this->isImmediateRelationshipCombinator($compound)) {
if (count($output)) {
$output[count($output) - 1] .= ' ' .
$compound;
} else {
$output[] = $compound;
}
$glueNext = true;
} elseif ($glueNext) {
$output[count($output) - 1] .= ' ' .
$compound;
$glueNext = false;
} else {
$output[] = $compound;
}
}
if ($selectorFormat) {
foreach ($output as &$o) {
$o = [Type::T_STRING, '', [$o]];
}
$output = [Type::T_LIST, ' ', $output];
} else {
$output = implode(' ', $output);
}
$parts[] = $output;
}
if ($selectorFormat) {
$parts = [Type::T_LIST, ',', $parts];
} else {
$parts = implode(', ', $parts);
}
return $parts;
}
/**
* Parse down the selector and revert [self] to "&"
before a reparsing
*
* @param array $selectors
*
* @return array
*/
protected function revertSelfSelector($selectors)
{
foreach ($selectors as &$part) {
if (is_array($part)) {
if ($part === [Type::T_SELF]) {
$part = '&';
} else {
$part = $this->revertSelfSelector($part);
}
}
}
return $selectors;
}
/**
* Flatten selector single; joins together .classes and #ids
*
* @param array $single
*
* @return array
*/
protected function flattenSelectorSingle($single)
{
$joined = [];
foreach ($single as $part) {
if (empty($joined) ||
! is_string($part) ||
preg_match('/[\[.:#%]/', $part)
) {
$joined[] = $part;
continue;
}
if (is_array(end($joined))) {
$joined[] = $part;
} else {
$joined[count($joined) - 1] .= $part;
}
}
return $joined;
}
/**
* Compile selector to string; self(&) should have been replaced by
now
*
* @param string|array $selector
*
* @return string
*/
protected function compileSelector($selector)
{
if (! is_array($selector)) {
return $selector; // media and the like
}
return implode(
' ',
array_map(
[$this, 'compileSelectorPart'],
$selector
)
);
}
/**
* Compile selector part
*
* @param array $piece
*
* @return string
*/
protected function compileSelectorPart($piece)
{
foreach ($piece as &$p) {
if (! is_array($p)) {
continue;
}
switch ($p[0]) {
case Type::T_SELF:
$p = '&';
break;
default:
$p = $this->compileValue($p);
break;
}
}
return implode($piece);
}
/**
* Has selector placeholder?
*
* @param array $selector
*
* @return boolean
*/
protected function hasSelectorPlaceholder($selector)
{
if (! is_array($selector)) {
return false;
}
foreach ($selector as $parts) {
foreach ($parts as $part) {
if (strlen($part) && '%' === $part[0]) {
return true;
}
}
}
return false;
}
protected function pushCallStack($name = '')
{
$this->callStack[] = [
'n' => $name,
Parser::SOURCE_INDEX => $this->sourceIndex,
Parser::SOURCE_LINE => $this->sourceLine,
Parser::SOURCE_COLUMN => $this->sourceColumn
];
// infinite calling loop
if (count($this->callStack) > 25000) {
// not displayed but you can var_dump it to deep debug
$msg = $this->callStackMessage(true, 100);
$msg = "Infinite calling loop";
$this->throwError($msg);
}
}
protected function popCallStack()
{
array_pop($this->callStack);
}
/**
* Compile children and return result
*
* @param array $stms
* @param \Leafo\ScssPhp\Formatter\OutputBlock $out
* @param string $traceName
*
* @return array|null
*/
protected function compileChildren($stms, OutputBlock $out, $traceName
= '')
{
$this->pushCallStack($traceName);
foreach ($stms as $stm) {
$ret = $this->compileChild($stm, $out);
if (isset($ret)) {
return $ret;
}
}
$this->popCallStack();
return null;
}
/**
* Compile children and throw exception if unexpected @return
*
* @param array $stms
* @param \Leafo\ScssPhp\Formatter\OutputBlock $out
* @param \Leafo\ScssPhp\Block $selfParent
* @param string $traceName
*
* @throws \Exception
*/
protected function compileChildrenNoReturn($stms, OutputBlock $out,
$selfParent = null, $traceName = '')
{
$this->pushCallStack($traceName);
foreach ($stms as $stm) {
if ($selfParent && isset($stm[1]) &&
is_object($stm[1]) && $stm[1] instanceof Block) {
$stm[1]->selfParent = $selfParent;
$ret = $this->compileChild($stm, $out);
$stm[1]->selfParent = null;
} elseif ($selfParent && $stm[0] === TYPE::T_INCLUDE) {
$stm['selfParent'] = $selfParent;
$ret = $this->compileChild($stm, $out);
unset($stm['selfParent']);
} else {
$ret = $this->compileChild($stm, $out);
}
if (isset($ret)) {
$this->throwError('@return may only be used within
a function');
return;
}
}
$this->popCallStack();
}
/**
* evaluate media query : compile internal value keeping the structure
inchanged
*
* @param array $queryList
*
* @return array
*/
protected function evaluateMediaQuery($queryList)
{
foreach ($queryList as $kql => $query) {
foreach ($query as $kq => $q) {
for ($i = 1; $i < count($q); $i++) {
$value = $this->compileValue($q[$i]);
// the parser had no mean to know if media type or
expression if it was an interpolation
if ($q[0] == Type::T_MEDIA_TYPE &&
(strpos($value, '(') !== false ||
strpos($value, ')') !== false ||
strpos($value, ':') !== false)
) {
$queryList[$kql][$kq][0] =
Type::T_MEDIA_EXPRESSION;
if (strpos($value, 'and') !== false) {
$values = explode('and', $value);
$value = trim(array_pop($values));
while ($v = trim(array_pop($values))) {
$type = Type::T_MEDIA_EXPRESSION;
if (strpos($v, '(') === false
&&
strpos($v, ')') === false
&&
strpos($v, ':') === false
) {
$type = Type::T_MEDIA_TYPE;
}
if (substr($v, 0, 1) === '('
&& substr($v, -1) === ')') {
$v = substr($v, 1, -1);
}
$queryList[$kql][] =
[$type,[Type::T_KEYWORD, $v]];
}
}
if (substr($value, 0, 1) === '('
&& substr($value, -1) === ')') {
$value = substr($value, 1, -1);
}
}
$queryList[$kql][$kq][$i] = [Type::T_KEYWORD, $value];
}
}
}
return $queryList;
}
/**
* Compile media query
*
* @param array $queryList
*
* @return array
*/
protected function compileMediaQuery($queryList)
{
$start = '@media ';
$default = trim($start);
$out = [];
$current = "";
foreach ($queryList as $query) {
$type = null;
$parts = [];
$mediaTypeOnly = true;
foreach ($query as $q) {
if ($q[0] !== Type::T_MEDIA_TYPE) {
$mediaTypeOnly = false;
break;
}
}
foreach ($query as $q) {
switch ($q[0]) {
case Type::T_MEDIA_TYPE:
$newType = array_map([$this,
'compileValue'], array_slice($q, 1));
// combining not and anything else than media type
is too risky and should be avoided
if (! $mediaTypeOnly) {
if (in_array(Type::T_NOT, $newType) || ($type
&& in_array(Type::T_NOT, $type) )) {
if ($type) {
array_unshift($parts, implode('
', array_filter($type)));
}
if (! empty($parts)) {
if (strlen($current)) {
$current .=
$this->formatter->tagSeparator;
}
$current .= implode(' and ',
$parts);
}
if ($current) {
$out[] = $start . $current;
}
$current = "";
$type = null;
$parts = [];
}
}
if ($newType === ['all'] &&
$default) {
$default = $start . 'all';
}
// all can be safely ignored and mixed with
whatever else
if ($newType !== ['all']) {
if ($type) {
$type = $this->mergeMediaTypes($type,
$newType);
if (empty($type)) {
// merge failed : ignore this query
that is not valid, skip to the next one
$parts = [];
$default = ''; // if
everything fail, no @media at all
continue 3;
}
} else {
$type = $newType;
}
}
break;
case Type::T_MEDIA_EXPRESSION:
if (isset($q[2])) {
$parts[] = '('
. $this->compileValue($q[1])
. $this->formatter->assignSeparator
. $this->compileValue($q[2])
. ')';
} else {
$parts[] = '('
. $this->compileValue($q[1])
. ')';
}
break;
case Type::T_MEDIA_VALUE:
$parts[] = $this->compileValue($q[1]);
break;
}
}
if ($type) {
array_unshift($parts, implode(' ',
array_filter($type)));
}
if (! empty($parts)) {
if (strlen($current)) {
$current .= $this->formatter->tagSeparator;
}
$current .= implode(' and ', $parts);
}
}
if ($current) {
$out[] = $start . $current;
}
// no @media type except all, and no conflict?
if (! $out && $default) {
$out[] = $default;
}
return $out;
}
/**
* Merge direct relationships between selectors
*
* @param array $selectors1
* @param array $selectors2
*
* @return array
*/
protected function mergeDirectRelationships($selectors1, $selectors2)
{
if (empty($selectors1) || empty($selectors2)) {
return array_merge($selectors1, $selectors2);
}
$part1 = end($selectors1);
$part2 = end($selectors2);
if (! $this->isImmediateRelationshipCombinator($part1[0])
&& $part1 !== $part2) {
return array_merge($selectors1, $selectors2);
}
$merged = [];
do {
$part1 = array_pop($selectors1);
$part2 = array_pop($selectors2);
if (! $this->isImmediateRelationshipCombinator($part1[0])
&& $part1 !== $part2) {
if
($this->isImmediateRelationshipCombinator(reset($merged)[0])) {
array_unshift($merged, [$part1[0] . $part2[0]]);
$merged = array_merge($selectors1, $selectors2,
$merged);
} else {
$merged = array_merge($selectors1, [$part1],
$selectors2, [$part2], $merged);
}
break;
}
array_unshift($merged, $part1);
} while (! empty($selectors1) && ! empty($selectors2));
return $merged;
}
/**
* Merge media types
*
* @param array $type1
* @param array $type2
*
* @return array|null
*/
protected function mergeMediaTypes($type1, $type2)
{
if (empty($type1)) {
return $type2;
}
if (empty($type2)) {
return $type1;
}
$m1 = '';
$t1 = '';
if (count($type1) > 1) {
$m1= strtolower($type1[0]);
$t1= strtolower($type1[1]);
} else {
$t1 = strtolower($type1[0]);
}
$m2 = '';
$t2 = '';
if (count($type2) > 1) {
$m2 = strtolower($type2[0]);
$t2 = strtolower($type2[1]);
} else {
$t2 = strtolower($type2[0]);
}
if (($m1 === Type::T_NOT) ^ ($m2 === Type::T_NOT)) {
if ($t1 === $t2) {
return null;
}
return [
$m1 === Type::T_NOT ? $m2 : $m1,
$m1 === Type::T_NOT ? $t2 : $t1,
];
}
if ($m1 === Type::T_NOT && $m2 === Type::T_NOT) {
// CSS has no way of representing "neither screen nor
print"
if ($t1 !== $t2) {
return null;
}
return [Type::T_NOT, $t1];
}
if ($t1 !== $t2) {
return null;
}
// t1 == t2, neither m1 nor m2 are "not"
return [empty($m1)? $m2 : $m1, $t1];
}
/**
* Compile import; returns true if the value was something that could
be imported
*
* @param array $rawPath
* @param \Leafo\ScssPhp\Formatter\OutputBlock $out
* @param boolean $once
*
* @return boolean
*/
protected function compileImport($rawPath, OutputBlock $out, $once =
false)
{
if ($rawPath[0] === Type::T_STRING) {
$path = $this->compileStringContent($rawPath);
if ($path = $this->findImport($path)) {
if (! $once || ! in_array($path, $this->importedFiles))
{
$this->importFile($path, $out);
$this->importedFiles[] = $path;
}
return true;
}
return false;
}
if ($rawPath[0] === Type::T_LIST) {
// handle a list of strings
if (count($rawPath[2]) === 0) {
return false;
}
foreach ($rawPath[2] as $path) {
if ($path[0] !== Type::T_STRING) {
return false;
}
}
foreach ($rawPath[2] as $path) {
$this->compileImport($path, $out);
}
return true;
}
return false;
}
/**
* Compile child; returns a value to halt execution
*
* @param array $child
* @param \Leafo\ScssPhp\Formatter\OutputBlock $out
*
* @return array
*/
protected function compileChild($child, OutputBlock $out)
{
if (isset($child[Parser::SOURCE_LINE])) {
$this->sourceIndex = isset($child[Parser::SOURCE_INDEX]) ?
$child[Parser::SOURCE_INDEX] : null;
$this->sourceLine = isset($child[Parser::SOURCE_LINE]) ?
$child[Parser::SOURCE_LINE] : -1;
$this->sourceColumn = isset($child[Parser::SOURCE_COLUMN]) ?
$child[Parser::SOURCE_COLUMN] : -1;
} elseif (is_array($child) &&
isset($child[1]->sourceLine)) {
$this->sourceIndex = $child[1]->sourceIndex;
$this->sourceLine = $child[1]->sourceLine;
$this->sourceColumn = $child[1]->sourceColumn;
} elseif (! empty($out->sourceLine) && !
empty($out->sourceName)) {
$this->sourceLine = $out->sourceLine;
$this->sourceIndex = array_search($out->sourceName,
$this->sourceNames);
if ($this->sourceIndex === false) {
$this->sourceIndex = null;
}
}
switch ($child[0]) {
case Type::T_SCSSPHP_IMPORT_ONCE:
$rawPath = $this->reduce($child[1]);
if (! $this->compileImport($rawPath, $out, true)) {
$out->lines[] = '@import ' .
$this->compileValue($rawPath) . ';';
}
break;
case Type::T_IMPORT:
$rawPath = $this->reduce($child[1]);
if (! $this->compileImport($rawPath, $out)) {
$out->lines[] = '@import ' .
$this->compileValue($rawPath) . ';';
}
break;
case Type::T_DIRECTIVE:
$this->compileDirective($child[1]);
break;
case Type::T_AT_ROOT:
$this->compileAtRoot($child[1]);
break;
case Type::T_MEDIA:
$this->compileMedia($child[1]);
break;
case Type::T_BLOCK:
$this->compileBlock($child[1]);
break;
case Type::T_CHARSET:
if (! $this->charsetSeen) {
$this->charsetSeen = true;
$out->lines[] = '@charset ' .
$this->compileValue($child[1]) . ';';
}
break;
case Type::T_ASSIGN:
list(, $name, $value) = $child;
if ($name[0] === Type::T_VARIABLE) {
$flags = isset($child[3]) ? $child[3] : [];
$isDefault = in_array('!default', $flags);
$isGlobal = in_array('!global', $flags);
if ($isGlobal) {
$this->set($name[1], $this->reduce($value),
false, $this->rootEnv, $value);
break;
}
$shouldSet = $isDefault &&
(($result = $this->get($name[1], false)) ===
null
|| $result === static::$null);
if (! $isDefault || $shouldSet) {
$this->set($name[1], $this->reduce($value),
true, null, $value);
}
break;
}
$compiledName = $this->compileValue($name);
// handle shorthand syntax: size / line-height
if ($compiledName === 'font' || $compiledName ===
'grid-row' || $compiledName === 'grid-column') {
if ($value[0] === Type::T_VARIABLE) {
// if the font value comes from variable, the
content is already reduced
// (i.e., formulas were already calculated), so we
need the original unreduced value
$value = $this->get($value[1], true, null,
true);
}
$fontValue=&$value;
if ($value[0] === Type::T_LIST &&
$value[1]==',') {
// this is the case if more than one font is given:
example: "font: 400 1em/1.3 arial,helvetica"
// we need to handle the first list element
$fontValue=&$value[2][0];
}
if ($fontValue[0] === Type::T_EXPRESSION &&
$fontValue[1] === '/') {
$fontValue = $this->expToString($fontValue);
} elseif ($fontValue[0] === Type::T_LIST) {
foreach ($fontValue[2] as &$item) {
if ($item[0] === Type::T_EXPRESSION &&
$item[1] === '/') {
$item = $this->expToString($item);
}
}
}
}
// if the value reduces to null from something else then
// the property should be discarded
if ($value[0] !== Type::T_NULL) {
$value = $this->reduce($value);
if ($value[0] === Type::T_NULL || $value ===
static::$nullString) {
break;
}
}
$compiledValue = $this->compileValue($value);
$out->lines[] = $this->formatter->property(
$compiledName,
$compiledValue
);
break;
case Type::T_COMMENT:
if ($out->type === Type::T_ROOT) {
$this->compileComment($child);
break;
}
$out->lines[] = $child[1];
break;
case Type::T_MIXIN:
case Type::T_FUNCTION:
list(, $block) = $child;
$this->set(static::$namespaces[$block->type] .
$block->name, $block);
break;
case Type::T_EXTEND:
foreach ($child[1] as $sel) {
$results = $this->evalSelectors([$sel]);
foreach ($results as $result) {
// only use the first one
$result = current($result);
$this->pushExtends($result, $out->selectors,
$child);
}
}
break;
case Type::T_IF:
list(, $if) = $child;
if ($this->isTruthy($this->reduce($if->cond,
true))) {
return $this->compileChildren($if->children,
$out);
}
foreach ($if->cases as $case) {
if ($case->type === Type::T_ELSE ||
$case->type === Type::T_ELSEIF &&
$this->isTruthy($this->reduce($case->cond))
) {
return
$this->compileChildren($case->children, $out);
}
}
break;
case Type::T_EACH:
list(, $each) = $child;
$list =
$this->coerceList($this->reduce($each->list));
$this->pushEnv();
foreach ($list[2] as $item) {
if (count($each->vars) === 1) {
$this->set($each->vars[0], $item, true);
} else {
list(,, $values) = $this->coerceList($item);
foreach ($each->vars as $i => $var) {
$this->set($var, isset($values[$i]) ?
$values[$i] : static::$null, true);
}
}
$ret = $this->compileChildren($each->children,
$out);
if ($ret) {
if ($ret[0] !== Type::T_CONTROL) {
$this->popEnv();
return $ret;
}
if ($ret[1]) {
break;
}
}
}
$this->popEnv();
break;
case Type::T_WHILE:
list(, $while) = $child;
while ($this->isTruthy($this->reduce($while->cond,
true))) {
$ret = $this->compileChildren($while->children,
$out);
if ($ret) {
if ($ret[0] !== Type::T_CONTROL) {
return $ret;
}
if ($ret[1]) {
break;
}
}
}
break;
case Type::T_FOR:
list(, $for) = $child;
$start = $this->reduce($for->start, true);
$end = $this->reduce($for->end, true);
if (! ($start[2] == $end[2] || $end->unitless())) {
$this->throwError('Incompatible units:
"%s" and "%s".', $start->unitStr(),
$end->unitStr());
break;
}
$unit = $start[2];
$start = $start[1];
$end = $end[1];
$d = $start < $end ? 1 : -1;
for (;;) {
if ((! $for->until && $start - $d == $end)
||
($for->until && $start == $end)
) {
break;
}
$this->set($for->var, new Node\Number($start,
$unit));
$start += $d;
$ret = $this->compileChildren($for->children,
$out);
if ($ret) {
if ($ret[0] !== Type::T_CONTROL) {
return $ret;
}
if ($ret[1]) {
break;
}
}
}
break;
case Type::T_BREAK:
return [Type::T_CONTROL, true];
case Type::T_CONTINUE:
return [Type::T_CONTROL, false];
case Type::T_RETURN:
return $this->reduce($child[1], true);
case Type::T_NESTED_PROPERTY:
list(, $prop) = $child;
$prefixed = [];
$prefix = $this->compileValue($prop->prefix) .
'-';
foreach ($prop->children as $child) {
switch ($child[0]) {
case Type::T_ASSIGN:
array_unshift($child[1][2], $prefix);
break;
case Type::T_NESTED_PROPERTY:
array_unshift($child[1]->prefix[2],
$prefix);
break;
}
$prefixed[] = $child;
}
$this->compileChildrenNoReturn($prefixed, $out);
break;
case Type::T_INCLUDE:
// including a mixin
list(, $name, $argValues, $content) = $child;
$mixin =
$this->get(static::$namespaces['mixin'] . $name, false);
if (! $mixin) {
$this->throwError("Undefined mixin
$name");
break;
}
$callingScope = $this->getStoreEnv();
// push scope, apply args
$this->pushEnv();
$this->env->depth--;
$storeEnv = $this->storeEnv;
$this->storeEnv = $this->env;
// Find the parent selectors in the env to be able to know
what '&' refers to in the mixin
// and assign this fake parent to childs
$selfParent = null;
if (isset($child['selfParent']) &&
isset($child['selfParent']->selectors)) {
$selfParent = $child['selfParent'];
} else {
$parentSelectors =
$this->multiplySelectors($this->env);
if ($parentSelectors) {
$parent = new Block();
$parent->selectors = $parentSelectors;
foreach ($mixin->children as $k => $child) {
if (isset($child[1]) &&
is_object($child[1]) && $child[1] instanceof Block) {
$mixin->children[$k][1]->parent =
$parent;
}
}
}
}
// clone the stored content to not have its scope spoiled
by a further call to the same mixin
// i.e., recursive @include of the same mixin
if (isset($content)) {
$copyContent = clone $content;
$copyContent->scope = $callingScope;
$this->setRaw(static::$namespaces['special'] .
'content', $copyContent, $this->env);
}
if (isset($mixin->args)) {
$this->applyArguments($mixin->args, $argValues);
}
$this->env->marker = 'mixin';
$this->compileChildrenNoReturn($mixin->children,
$out, $selfParent, $this->env->marker . " " . $name);
$this->storeEnv = $storeEnv;
$this->popEnv();
break;
case Type::T_MIXIN_CONTENT:
$env = isset($this->storeEnv) ? $this->storeEnv :
$this->env;
$content =
$this->get(static::$namespaces['special'] .
'content', false, $env);
if (! $content) {
$content = new \stdClass();
$content->scope = new \stdClass();
$content->children =
$this->storeEnv->parent->block->children;
break;
}
$storeEnv = $this->storeEnv;
$this->storeEnv = $content->scope;
$this->compileChildrenNoReturn($content->children,
$out);
$this->storeEnv = $storeEnv;
break;
case Type::T_DEBUG:
list(, $value) = $child;
$fname = $this->sourceNames[$this->sourceIndex];
$line = $this->sourceLine;
$value = $this->compileValue($this->reduce($value,
true));
fwrite($this->stderr, "File $fname on line $line
DEBUG: $value\n");
break;
case Type::T_WARN:
list(, $value) = $child;
$fname = $this->sourceNames[$this->sourceIndex];
$line = $this->sourceLine;
$value = $this->compileValue($this->reduce($value,
true));
fwrite($this->stderr, "File $fname on line $line
WARN: $value\n");
break;
case Type::T_ERROR:
list(, $value) = $child;
$fname = $this->sourceNames[$this->sourceIndex];
$line = $this->sourceLine;
$value = $this->compileValue($this->reduce($value,
true));
$this->throwError("File $fname on line $line ERROR:
$value\n");
break;
case Type::T_CONTROL:
$this->throwError('@break/@continue not permitted
in this scope');
break;
default:
$this->throwError("unknown child type:
$child[0]");
}
}
/**
* Reduce expression to string
*
* @param array $exp
*
* @return array
*/
protected function expToString($exp)
{
list(, $op, $left, $right, /* $inParens */, $whiteLeft,
$whiteRight) = $exp;
$content = [$this->reduce($left)];
if ($whiteLeft) {
$content[] = ' ';
}
$content[] = $op;
if ($whiteRight) {
$content[] = ' ';
}
$content[] = $this->reduce($right);
return [Type::T_STRING, '', $content];
}
/**
* Is truthy?
*
* @param array $value
*
* @return boolean
*/
protected function isTruthy($value)
{
return $value !== static::$false && $value !==
static::$null;
}
/**
* Is the value a direct relationship combinator?
*
* @param string $value
*
* @return boolean
*/
protected function isImmediateRelationshipCombinator($value)
{
return $value === '>' || $value === '+' ||
$value === '~';
}
/**
* Should $value cause its operand to eval
*
* @param array $value
*
* @return boolean
*/
protected function shouldEval($value)
{
switch ($value[0]) {
case Type::T_EXPRESSION:
if ($value[1] === '/') {
return $this->shouldEval($value[2]) ||
$this->shouldEval($value[3]);
}
// fall-thru
case Type::T_VARIABLE:
case Type::T_FUNCTION_CALL:
return true;
}
return false;
}
/**
* Reduce value
*
* @param array $value
* @param boolean $inExp
*
* @return array|\Leafo\ScssPhp\Node\Number
*/
protected function reduce($value, $inExp = false)
{
switch ($value[0]) {
case Type::T_EXPRESSION:
list(, $op, $left, $right, $inParens) = $value;
$opName = isset(static::$operatorNames[$op]) ?
static::$operatorNames[$op] : $op;
$inExp = $inExp || $this->shouldEval($left) ||
$this->shouldEval($right);
$left = $this->reduce($left, true);
if ($op !== 'and' && $op !==
'or') {
$right = $this->reduce($right, true);
}
// special case: looks like css shorthand
if ($opName == 'div' && ! $inParens
&& ! $inExp && isset($right[2])
&& (($right[0] !== Type::T_NUMBER &&
$right[2] != '')
|| ($right[0] === Type::T_NUMBER && !
$right->unitless()))
) {
return $this->expToString($value);
}
$left = $this->coerceForExpression($left);
$right = $this->coerceForExpression($right);
$ltype = $left[0];
$rtype = $right[0];
$ucOpName = ucfirst($opName);
$ucLType = ucfirst($ltype);
$ucRType = ucfirst($rtype);
// this tries:
// 1. op[op name][left type][right type]
// 2. op[left type][right type] (passing the op as first
arg
// 3. op[op name]
$fn = "op${ucOpName}${ucLType}${ucRType}";
if (is_callable([$this, $fn]) ||
(($fn = "op${ucLType}${ucRType}") &&
is_callable([$this, $fn]) &&
$passOp = true) ||
(($fn = "op${ucOpName}") &&
is_callable([$this, $fn]) &&
$genOp = true)
) {
$coerceUnit = false;
if (! isset($genOp) &&
$left[0] === Type::T_NUMBER && $right[0]
=== Type::T_NUMBER
) {
$coerceUnit = true;
switch ($opName) {
case 'mul':
$targetUnit = $left[2];
foreach ($right[2] as $unit => $exp) {
$targetUnit[$unit] =
(isset($targetUnit[$unit]) ? $targetUnit[$unit] : 0) + $exp;
}
break;
case 'div':
$targetUnit = $left[2];
foreach ($right[2] as $unit => $exp) {
$targetUnit[$unit] =
(isset($targetUnit[$unit]) ? $targetUnit[$unit] : 0) - $exp;
}
break;
case 'mod':
$targetUnit = $left[2];
break;
default:
$targetUnit = $left->unitless() ?
$right[2] : $left[2];
}
if (! $left->unitless() && !
$right->unitless()) {
$left = $left->normalize();
$right = $right->normalize();
}
}
$shouldEval = $inParens || $inExp;
if (isset($passOp)) {
$out = $this->$fn($op, $left, $right,
$shouldEval);
} else {
$out = $this->$fn($left, $right, $shouldEval);
}
if (isset($out)) {
if ($coerceUnit && $out[0] ===
Type::T_NUMBER) {
$out = $out->coerce($targetUnit);
}
return $out;
}
}
return $this->expToString($value);
case Type::T_UNARY:
list(, $op, $exp, $inParens) = $value;
$inExp = $inExp || $this->shouldEval($exp);
$exp = $this->reduce($exp);
if ($exp[0] === Type::T_NUMBER) {
switch ($op) {
case '+':
return new Node\Number($exp[1], $exp[2]);
case '-':
return new Node\Number(-$exp[1], $exp[2]);
}
}
if ($op === 'not') {
if ($inExp || $inParens) {
if ($exp === static::$false || $exp ===
static::$null) {
return static::$true;
}
return static::$false;
}
$op = $op . ' ';
}
return [Type::T_STRING, '', [$op, $exp]];
case Type::T_VARIABLE:
return $this->reduce($this->get($value[1]));
case Type::T_LIST:
foreach ($value[2] as &$item) {
$item = $this->reduce($item);
}
return $value;
case Type::T_MAP:
foreach ($value[1] as &$item) {
$item = $this->reduce($item);
}
foreach ($value[2] as &$item) {
$item = $this->reduce($item);
}
return $value;
case Type::T_STRING:
foreach ($value[2] as &$item) {
if (is_array($item) || $item instanceof \ArrayAccess) {
$item = $this->reduce($item);
}
}
return $value;
case Type::T_INTERPOLATE:
$value[1] = $this->reduce($value[1]);
if ($inExp) {
return $value[1];
}
return $value;
case Type::T_FUNCTION_CALL:
return $this->fncall($value[1], $value[2]);
case Type::T_SELF:
$selfSelector = $this->multiplySelectors($this->env);
$selfSelector = $this->collapseSelectors($selfSelector,
true);
return $selfSelector;
default:
return $value;
}
}
/**
* Function caller
*
* @param string $name
* @param array $argValues
*
* @return array|null
*/
protected function fncall($name, $argValues)
{
// SCSS @function
if ($this->callScssFunction($name, $argValues, $returnValue)) {
return $returnValue;
}
// native PHP functions
if ($this->callNativeFunction($name, $argValues, $returnValue))
{
return $returnValue;
}
// for CSS functions, simply flatten the arguments into a list
$listArgs = [];
foreach ((array) $argValues as $arg) {
if (empty($arg[0])) {
$listArgs[] = $this->reduce($arg[1]);
}
}
return [Type::T_FUNCTION, $name, [Type::T_LIST, ',',
$listArgs]];
}
/**
* Normalize name
*
* @param string $name
*
* @return string
*/
protected function normalizeName($name)
{
return str_replace('-', '_', $name);
}
/**
* Normalize value
*
* @param array $value
*
* @return array
*/
public function normalizeValue($value)
{
$value = $this->coerceForExpression($this->reduce($value));
switch ($value[0]) {
case Type::T_LIST:
$value = $this->extractInterpolation($value);
if ($value[0] !== Type::T_LIST) {
return [Type::T_KEYWORD,
$this->compileValue($value)];
}
foreach ($value[2] as $key => $item) {
$value[2][$key] = $this->normalizeValue($item);
}
return $value;
case Type::T_STRING:
return [$value[0], '"',
[$this->compileStringContent($value)]];
case Type::T_NUMBER:
return $value->normalize();
case Type::T_INTERPOLATE:
return [Type::T_KEYWORD, $this->compileValue($value)];
default:
return $value;
}
}
/**
* Add numbers
*
* @param array $left
* @param array $right
*
* @return \Leafo\ScssPhp\Node\Number
*/
protected function opAddNumberNumber($left, $right)
{
return new Node\Number($left[1] + $right[1], $left[2]);
}
/**
* Multiply numbers
*
* @param array $left
* @param array $right
*
* @return \Leafo\ScssPhp\Node\Number
*/
protected function opMulNumberNumber($left, $right)
{
return new Node\Number($left[1] * $right[1], $left[2]);
}
/**
* Subtract numbers
*
* @param array $left
* @param array $right
*
* @return \Leafo\ScssPhp\Node\Number
*/
protected function opSubNumberNumber($left, $right)
{
return new Node\Number($left[1] - $right[1], $left[2]);
}
/**
* Divide numbers
*
* @param array $left
* @param array $right
*
* @return array|\Leafo\ScssPhp\Node\Number
*/
protected function opDivNumberNumber($left, $right)
{
if ($right[1] == 0) {
return [Type::T_STRING, '', [$left[1] . $left[2] .
'/' . $right[1] . $right[2]]];
}
return new Node\Number($left[1] / $right[1], $left[2]);
}
/**
* Mod numbers
*
* @param array $left
* @param array $right
*
* @return \Leafo\ScssPhp\Node\Number
*/
protected function opModNumberNumber($left, $right)
{
return new Node\Number($left[1] % $right[1], $left[2]);
}
/**
* Add strings
*
* @param array $left
* @param array $right
*
* @return array|null
*/
protected function opAdd($left, $right)
{
if ($strLeft = $this->coerceString($left)) {
if ($right[0] === Type::T_STRING) {
$right[1] = '';
}
$strLeft[2][] = $right;
return $strLeft;
}
if ($strRight = $this->coerceString($right)) {
if ($left[0] === Type::T_STRING) {
$left[1] = '';
}
array_unshift($strRight[2], $left);
return $strRight;
}
return null;
}
/**
* Boolean and
*
* @param array $left
* @param array $right
* @param boolean $shouldEval
*
* @return array|null
*/
protected function opAnd($left, $right, $shouldEval)
{
$truthy = ($left === static::$null || $right === static::$null) ||
($left === static::$false || $left === static::$true)
&&
($right === static::$false || $right === static::$true);
if (! $shouldEval) {
if (! $truthy) {
return null;
}
}
if ($left !== static::$false && $left !== static::$null) {
return $this->reduce($right, true);
}
return $left;
}
/**
* Boolean or
*
* @param array $left
* @param array $right
* @param boolean $shouldEval
*
* @return array|null
*/
protected function opOr($left, $right, $shouldEval)
{
$truthy = ($left === static::$null || $right === static::$null) ||
($left === static::$false || $left === static::$true)
&&
($right === static::$false || $right === static::$true);
if (! $shouldEval) {
if (! $truthy) {
return null;
}
}
if ($left !== static::$false && $left !== static::$null) {
return $left;
}
return $this->reduce($right, true);
}
/**
* Compare colors
*
* @param string $op
* @param array $left
* @param array $right
*
* @return array
*/
protected function opColorColor($op, $left, $right)
{
$out = [Type::T_COLOR];
foreach ([1, 2, 3] as $i) {
$lval = isset($left[$i]) ? $left[$i] : 0;
$rval = isset($right[$i]) ? $right[$i] : 0;
switch ($op) {
case '+':
$out[] = $lval + $rval;
break;
case '-':
$out[] = $lval - $rval;
break;
case '*':
$out[] = $lval * $rval;
break;
case '%':
$out[] = $lval % $rval;
break;
case '/':
if ($rval == 0) {
$this->throwError("color: Can't divide
by zero");
break 2;
}
$out[] = (int) ($lval / $rval);
break;
case '==':
return $this->opEq($left, $right);
case '!=':
return $this->opNeq($left, $right);
default:
$this->throwError("color: unknown op
$op");
break 2;
}
}
if (isset($left[4])) {
$out[4] = $left[4];
} elseif (isset($right[4])) {
$out[4] = $right[4];
}
return $this->fixColor($out);
}
/**
* Compare color and number
*
* @param string $op
* @param array $left
* @param array $right
*
* @return array
*/
protected function opColorNumber($op, $left, $right)
{
$value = $right[1];
return $this->opColorColor(
$op,
$left,
[Type::T_COLOR, $value, $value, $value]
);
}
/**
* Compare number and color
*
* @param string $op
* @param array $left
* @param array $right
*
* @return array
*/
protected function opNumberColor($op, $left, $right)
{
$value = $left[1];
return $this->opColorColor(
$op,
[Type::T_COLOR, $value, $value, $value],
$right
);
}
/**
* Compare number1 == number2
*
* @param array $left
* @param array $right
*
* @return array
*/
protected function opEq($left, $right)
{
if (($lStr = $this->coerceString($left)) && ($rStr =
$this->coerceString($right))) {
$lStr[1] = '';
$rStr[1] = '';
$left = $this->compileValue($lStr);
$right = $this->compileValue($rStr);
}
return $this->toBool($left === $right);
}
/**
* Compare number1 != number2
*
* @param array $left
* @param array $right
*
* @return array
*/
protected function opNeq($left, $right)
{
if (($lStr = $this->coerceString($left)) && ($rStr =
$this->coerceString($right))) {
$lStr[1] = '';
$rStr[1] = '';
$left = $this->compileValue($lStr);
$right = $this->compileValue($rStr);
}
return $this->toBool($left !== $right);
}
/**
* Compare number1 >= number2
*
* @param array $left
* @param array $right
*
* @return array
*/
protected function opGteNumberNumber($left, $right)
{
return $this->toBool($left[1] >= $right[1]);
}
/**
* Compare number1 > number2
*
* @param array $left
* @param array $right
*
* @return array
*/
protected function opGtNumberNumber($left, $right)
{
return $this->toBool($left[1] > $right[1]);
}
/**
* Compare number1 <= number2
*
* @param array $left
* @param array $right
*
* @return array
*/
protected function opLteNumberNumber($left, $right)
{
return $this->toBool($left[1] <= $right[1]);
}
/**
* Compare number1 < number2
*
* @param array $left
* @param array $right
*
* @return array
*/
protected function opLtNumberNumber($left, $right)
{
return $this->toBool($left[1] < $right[1]);
}
/**
* Three-way comparison, aka spaceship operator
*
* @param array $left
* @param array $right
*
* @return \Leafo\ScssPhp\Node\Number
*/
protected function opCmpNumberNumber($left, $right)
{
$n = $left[1] - $right[1];
return new Node\Number($n ? $n / abs($n) : 0, '');
}
/**
* Cast to boolean
*
* @api
*
* @param mixed $thing
*
* @return array
*/
public function toBool($thing)
{
return $thing ? static::$true : static::$false;
}
/**
* Compiles a primitive value into a CSS property value.
*
* Values in scssphp are typed by being wrapped in arrays, their format
is
* typically:
*
* array(type, contents [, additional_contents]*)
*
* The input is expected to be reduced. This function will not work on
* things like expressions and variables.
*
* @api
*
* @param array $value
*
* @return string
*/
public function compileValue($value)
{
$value = $this->reduce($value);
switch ($value[0]) {
case Type::T_KEYWORD:
return $value[1];
case Type::T_COLOR:
// [1] - red component (either number for a %)
// [2] - green component
// [3] - blue component
// [4] - optional alpha component
list(, $r, $g, $b) = $value;
$r = round($r);
$g = round($g);
$b = round($b);
if (count($value) === 5 && $value[4] !== 1) { //
rgba
$a = new Node\Number($value[4], '');
return 'rgba(' . $r . ', ' . $g .
', ' . $b . ', ' . $a . ')';
}
$h = sprintf('#%02x%02x%02x', $r, $g, $b);
// Converting hex color to short notation (e.g. #003399 to
#039)
if ($h[1] === $h[2] && $h[3] === $h[4] &&
$h[5] === $h[6]) {
$h = '#' . $h[1] . $h[3] . $h[5];
}
return $h;
case Type::T_NUMBER:
return $value->output($this);
case Type::T_STRING:
return $value[1] . $this->compileStringContent($value) .
$value[1];
case Type::T_FUNCTION:
$args = ! empty($value[2]) ?
$this->compileValue($value[2]) : '';
return "$value[1]($args)";
case Type::T_LIST:
$value = $this->extractInterpolation($value);
if ($value[0] !== Type::T_LIST) {
return $this->compileValue($value);
}
list(, $delim, $items) = $value;
if ($delim !== ' ') {
$delim .= ' ';
}
$filtered = [];
foreach ($items as $item) {
if ($item[0] === Type::T_NULL) {
continue;
}
$filtered[] = $this->compileValue($item);
}
return implode("$delim", $filtered);
case Type::T_MAP:
$keys = $value[1];
$values = $value[2];
$filtered = [];
for ($i = 0, $s = count($keys); $i < $s; $i++) {
$filtered[$this->compileValue($keys[$i])] =
$this->compileValue($values[$i]);
}
array_walk($filtered, function (&$value, $key) {
$value = $key . ': ' . $value;
});
return '(' . implode(', ', $filtered) .
')';
case Type::T_INTERPOLATED:
// node created by extractInterpolation
list(, $interpolate, $left, $right) = $value;
list(,, $whiteLeft, $whiteRight) = $interpolate;
$left = count($left[2]) > 0 ?
$this->compileValue($left) . $whiteLeft :
'';
$right = count($right[2]) > 0 ?
$whiteRight . $this->compileValue($right) :
'';
return $left . $this->compileValue($interpolate) .
$right;
case Type::T_INTERPOLATE:
// strip quotes if it's a string
$reduced = $this->reduce($value[1]);
switch ($reduced[0]) {
case Type::T_LIST:
$reduced =
$this->extractInterpolation($reduced);
if ($reduced[0] !== Type::T_LIST) {
break;
}
list(, $delim, $items) = $reduced;
if ($delim !== ' ') {
$delim .= ' ';
}
$filtered = [];
foreach ($items as $item) {
if ($item[0] === Type::T_NULL) {
continue;
}
$temp =
$this->compileValue([Type::T_KEYWORD, $item]);
if ($temp[0] === Type::T_STRING) {
$filtered[] =
$this->compileStringContent($temp);
} elseif ($temp[0] === Type::T_KEYWORD) {
$filtered[] = $temp[1];
} else {
$filtered[] =
$this->compileValue($temp);
}
}
$reduced = [Type::T_KEYWORD,
implode("$delim", $filtered)];
break;
case Type::T_STRING:
$reduced = [Type::T_KEYWORD,
$this->compileStringContent($reduced)];
break;
case Type::T_NULL:
$reduced = [Type::T_KEYWORD, ''];
}
return $this->compileValue($reduced);
case Type::T_NULL:
return 'null';
default:
$this->throwError("unknown value type:
$value[0]");
}
}
/**
* Flatten list
*
* @param array $list
*
* @return string
*/
protected function flattenList($list)
{
return $this->compileValue($list);
}
/**
* Compile string content
*
* @param array $string
*
* @return string
*/
protected function compileStringContent($string)
{
$parts = [];
foreach ($string[2] as $part) {
if (is_array($part) || $part instanceof \ArrayAccess) {
$parts[] = $this->compileValue($part);
} else {
$parts[] = $part;
}
}
return implode($parts);
}
/**
* Extract interpolation; it doesn't need to be recursive,
compileValue will handle that
*
* @param array $list
*
* @return array
*/
protected function extractInterpolation($list)
{
$items = $list[2];
foreach ($items as $i => $item) {
if ($item[0] === Type::T_INTERPOLATE) {
$before = [Type::T_LIST, $list[1], array_slice($items, 0,
$i)];
$after = [Type::T_LIST, $list[1], array_slice($items, $i +
1)];
return [Type::T_INTERPOLATED, $item, $before, $after];
}
}
return $list;
}
/**
* Find the final set of selectors
*
* @param \Leafo\ScssPhp\Compiler\Environment $env
* @param \Leafo\ScssPhp\Block $selfParent
*
* @return array
*/
protected function multiplySelectors(Environment $env, $selfParent =
null)
{
$envs = $this->compactEnv($env);
$selectors = [];
$parentSelectors = [[]];
$selfParentSelectors = null;
if (! is_null($selfParent) && $selfParent->selectors) {
$selfParentSelectors =
$this->evalSelectors($selfParent->selectors);
}
while ($env = array_pop($envs)) {
if (empty($env->selectors)) {
continue;
}
$selectors = $env->selectors;
do {
$stillHasSelf = false;
$prevSelectors = $selectors;
$selectors = [];
foreach ($prevSelectors as $selector) {
foreach ($parentSelectors as $parent) {
if ($selfParentSelectors) {
foreach ($selfParentSelectors as $selfParent) {
// if no '&' in the selector,
each call will give same result, only add once
$s = $this->joinSelectors($parent,
$selector, $stillHasSelf, $selfParent);
$selectors[serialize($s)] = $s;
}
} else {
$s = $this->joinSelectors($parent,
$selector, $stillHasSelf);
$selectors[serialize($s)] = $s;
}
}
}
} while ($stillHasSelf);
$parentSelectors = $selectors;
}
$selectors = array_values($selectors);
return $selectors;
}
/**
* Join selectors; looks for & to replace, or append parent before
child
*
* @param array $parent
* @param array $child
* @param boolean &$stillHasSelf
* @param array $selfParentSelectors
* @return array
*/
protected function joinSelectors($parent, $child, &$stillHasSelf,
$selfParentSelectors = null)
{
$setSelf = false;
$out = [];
foreach ($child as $part) {
$newPart = [];
foreach ($part as $p) {
// only replace & once and should be recalled to be
able to make combinations
if ($p === static::$selfSelector && $setSelf) {
$stillHasSelf = true;
}
if ($p === static::$selfSelector && ! $setSelf) {
$setSelf = true;
if (is_null($selfParentSelectors)) {
$selfParentSelectors = $parent;
}
foreach ($selfParentSelectors as $i => $parentPart)
{
if ($i > 0) {
$out[] = $newPart;
$newPart = [];
}
foreach ($parentPart as $pp) {
if (is_array($pp)) {
$flatten = [];
array_walk_recursive($pp, function ($a) use
(&$flatten) {
$flatten[] = $a;
});
$pp = implode($flatten);
}
$newPart[] = $pp;
}
}
} else {
$newPart[] = $p;
}
}
$out[] = $newPart;
}
return $setSelf ? $out : array_merge($parent, $child);
}
/**
* Multiply media
*
* @param \Leafo\ScssPhp\Compiler\Environment $env
* @param array $childQueries
*
* @return array
*/
protected function multiplyMedia(Environment $env = null, $childQueries
= null)
{
if (! isset($env) ||
! empty($env->block->type) &&
$env->block->type !== Type::T_MEDIA
) {
return $childQueries;
}
// plain old block, skip
if (empty($env->block->type)) {
return $this->multiplyMedia($env->parent, $childQueries);
}
$parentQueries = isset($env->block->queryList)
? $env->block->queryList
: [[[Type::T_MEDIA_VALUE, $env->block->value]]];
$store = [$this->env, $this->storeEnv];
$this->env = $env;
$this->storeEnv = null;
$parentQueries = $this->evaluateMediaQuery($parentQueries);
list($this->env, $this->storeEnv) = $store;
if ($childQueries === null) {
$childQueries = $parentQueries;
} else {
$originalQueries = $childQueries;
$childQueries = [];
foreach ($parentQueries as $parentQuery) {
foreach ($originalQueries as $childQuery) {
$childQueries[] = array_merge(
$parentQuery,
[[Type::T_MEDIA_TYPE, [Type::T_KEYWORD,
'all']]],
$childQuery
);
}
}
}
return $this->multiplyMedia($env->parent, $childQueries);
}
/**
* Convert env linked list to stack
*
* @param \Leafo\ScssPhp\Compiler\Environment $env
*
* @return array
*/
protected function compactEnv(Environment $env)
{
for ($envs = []; $env; $env = $env->parent) {
$envs[] = $env;
}
return $envs;
}
/**
* Convert env stack to singly linked list
*
* @param array $envs
*
* @return \Leafo\ScssPhp\Compiler\Environment
*/
protected function extractEnv($envs)
{
for ($env = null; $e = array_pop($envs);) {
$e->parent = $env;
$env = $e;
}
return $env;
}
/**
* Push environment
*
* @param \Leafo\ScssPhp\Block $block
*
* @return \Leafo\ScssPhp\Compiler\Environment
*/
protected function pushEnv(Block $block = null)
{
$env = new Environment;
$env->parent = $this->env;
$env->store = [];
$env->block = $block;
$env->depth = isset($this->env->depth) ?
$this->env->depth + 1 : 0;
$this->env = $env;
return $env;
}
/**
* Pop environment
*/
protected function popEnv()
{
$this->env = $this->env->parent;
}
/**
* Get store environment
*
* @return \Leafo\ScssPhp\Compiler\Environment
*/
protected function getStoreEnv()
{
return isset($this->storeEnv) ? $this->storeEnv :
$this->env;
}
/**
* Set variable
*
* @param string $name
* @param mixed $value
* @param boolean $shadow
* @param \Leafo\ScssPhp\Compiler\Environment $env
* @param mixed $valueUnreduced
*/
protected function set($name, $value, $shadow = false, Environment $env
= null, $valueUnreduced = null)
{
$name = $this->normalizeName($name);
if (! isset($env)) {
$env = $this->getStoreEnv();
}
if ($shadow) {
$this->setRaw($name, $value, $env, $valueUnreduced);
} else {
$this->setExisting($name, $value, $env, $valueUnreduced);
}
}
/**
* Set existing variable
*
* @param string $name
* @param mixed $value
* @param \Leafo\ScssPhp\Compiler\Environment $env
* @param mixed $valueUnreduced
*/
protected function setExisting($name, $value, Environment $env,
$valueUnreduced = null)
{
$storeEnv = $env;
$hasNamespace = $name[0] === '^' || $name[0] ===
'@' || $name[0] === '%';
for (;;) {
if (array_key_exists($name, $env->store)) {
break;
}
if (! $hasNamespace && isset($env->marker)) {
$env = $storeEnv;
break;
}
if (! isset($env->parent)) {
$env = $storeEnv;
break;
}
$env = $env->parent;
}
$env->store[$name] = $value;
if ($valueUnreduced) {
$env->storeUnreduced[$name] = $valueUnreduced;
}
}
/**
* Set raw variable
*
* @param string $name
* @param mixed $value
* @param \Leafo\ScssPhp\Compiler\Environment $env
* @param mixed $valueUnreduced
*/
protected function setRaw($name, $value, Environment $env,
$valueUnreduced = null)
{
$env->store[$name] = $value;
if ($valueUnreduced) {
$env->storeUnreduced[$name] = $valueUnreduced;
}
}
/**
* Get variable
*
* @api
*
* @param string $name
* @param boolean $shouldThrow
* @param \Leafo\ScssPhp\Compiler\Environment $env
* @param boolean $unreduced
*
* @return mixed|null
*/
public function get($name, $shouldThrow = true, Environment $env =
null, $unreduced = false)
{
$normalizedName = $this->normalizeName($name);
$specialContentKey = static::$namespaces['special'] .
'content';
if (! isset($env)) {
$env = $this->getStoreEnv();
}
$nextIsRoot = false;
$hasNamespace = $normalizedName[0] === '^' ||
$normalizedName[0] === '@' || $normalizedName[0] ===
'%';
$maxDepth = 10000;
for (;;) {
if ($maxDepth-- <= 0) {
break;
}
if (array_key_exists($normalizedName, $env->store)) {
if ($unreduced &&
isset($env->storeUnreduced[$normalizedName])) {
return $env->storeUnreduced[$normalizedName];
}
return $env->store[$normalizedName];
}
if (! $hasNamespace && isset($env->marker)) {
if (! $nextIsRoot && !
empty($env->store[$specialContentKey])) {
$env = $env->store[$specialContentKey]->scope;
continue;
}
$env = $this->rootEnv;
continue;
}
if (! isset($env->parent)) {
break;
}
$env = $env->parent;
}
if ($shouldThrow) {
$this->throwError("Undefined variable \$$name" .
($maxDepth<=0 ? " (infinite recursion)" : ""));
}
// found nothing
return null;
}
/**
* Has variable?
*
* @param string $name
* @param \Leafo\ScssPhp\Compiler\Environment $env
*
* @return boolean
*/
protected function has($name, Environment $env = null)
{
return $this->get($name, false, $env) !== null;
}
/**
* Inject variables
*
* @param array $args
*/
protected function injectVariables(array $args)
{
if (empty($args)) {
return;
}
$parser = $this->parserFactory(__METHOD__);
foreach ($args as $name => $strValue) {
if ($name[0] === '$') {
$name = substr($name, 1);
}
if (! $parser->parseValue($strValue, $value)) {
$value = $this->coerceValue($strValue);
}
$this->set($name, $value);
}
}
/**
* Set variables
*
* @api
*
* @param array $variables
*/
public function setVariables(array $variables)
{
$this->registeredVars = array_merge($this->registeredVars,
$variables);
}
/**
* Unset variable
*
* @api
*
* @param string $name
*/
public function unsetVariable($name)
{
unset($this->registeredVars[$name]);
}
/**
* Returns list of variables
*
* @api
*
* @return array
*/
public function getVariables()
{
return $this->registeredVars;
}
/**
* Adds to list of parsed files
*
* @api
*
* @param string $path
*/
public function addParsedFile($path)
{
if (isset($path) && file_exists($path)) {
$this->parsedFiles[realpath($path)] = filemtime($path);
}
}
/**
* Returns list of parsed files
*
* @api
*
* @return array
*/
public function getParsedFiles()
{
return $this->parsedFiles;
}
/**
* Add import path
*
* @api
*
* @param string|callable $path
*/
public function addImportPath($path)
{
if (! in_array($path, $this->importPaths)) {
$this->importPaths[] = $path;
}
}
/**
* Set import paths
*
* @api
*
* @param string|array $path
*/
public function setImportPaths($path)
{
$this->importPaths = (array) $path;
}
/**
* Set number precision
*
* @api
*
* @param integer $numberPrecision
*/
public function setNumberPrecision($numberPrecision)
{
Node\Number::$precision = $numberPrecision;
}
/**
* Set formatter
*
* @api
*
* @param string $formatterName
*/
public function setFormatter($formatterName)
{
$this->formatter = $formatterName;
}
/**
* Set line number style
*
* @api
*
* @param string $lineNumberStyle
*/
public function setLineNumberStyle($lineNumberStyle)
{
$this->lineNumberStyle = $lineNumberStyle;
}
/**
* Enable/disable source maps
*
* @api
*
* @param integer $sourceMap
*/
public function setSourceMap($sourceMap)
{
$this->sourceMap = $sourceMap;
}
/**
* Set source map options
*
* @api
*
* @param array $sourceMapOptions
*/
public function setSourceMapOptions($sourceMapOptions)
{
$this->sourceMapOptions = $sourceMapOptions;
}
/**
* Register function
*
* @api
*
* @param string $name
* @param callable $func
* @param array $prototype
*/
public function registerFunction($name, $func, $prototype = null)
{
$this->userFunctions[$this->normalizeName($name)] = [$func,
$prototype];
}
/**
* Unregister function
*
* @api
*
* @param string $name
*/
public function unregisterFunction($name)
{
unset($this->userFunctions[$this->normalizeName($name)]);
}
/**
* Add feature
*
* @api
*
* @param string $name
*/
public function addFeature($name)
{
$this->registeredFeatures[$name] = true;
}
/**
* Import file
*
* @param string $path
* @param \Leafo\ScssPhp\Formatter\OutputBlock $out
*/
protected function importFile($path, OutputBlock $out)
{
// see if tree is cached
$realPath = realpath($path);
if (isset($this->importCache[$realPath])) {
$this->handleImportLoop($realPath);
$tree = $this->importCache[$realPath];
} else {
$code = file_get_contents($path);
$parser = $this->parserFactory($path);
$tree = $parser->parse($code);
$this->importCache[$realPath] = $tree;
}
$pi = pathinfo($path);
array_unshift($this->importPaths, $pi['dirname']);
$this->compileChildrenNoReturn($tree->children, $out);
array_shift($this->importPaths);
}
/**
* Return the file path for an import url if it exists
*
* @api
*
* @param string $url
*
* @return string|null
*/
public function findImport($url)
{
$urls = [];
// for "normal" scss imports (ignore vanilla css and
external requests)
if (! preg_match('/\.css$|^https?:\/\//', $url)) {
// try both normal and the _partial filename
$urls = [$url, preg_replace('/[^\/]+$/',
'_\0', $url)];
}
$hasExtension = preg_match('/[.]s?css$/', $url);
foreach ($this->importPaths as $dir) {
if (is_string($dir)) {
// check urls for normal import paths
foreach ($urls as $full) {
$separator = (
! empty($dir) &&
substr($dir, -1) !== '/' &&
substr($full, 0, 1) !== '/'
) ? '/' : '';
$full = $dir . $separator . $full;
if ($this->fileExists($file = $full .
'.scss') ||
($hasExtension &&
$this->fileExists($file = $full))
) {
return $file;
}
}
} elseif (is_callable($dir)) {
// check custom callback for import path
$file = call_user_func($dir, $url);
if ($file !== null) {
return $file;
}
}
}
return null;
}
/**
* Set encoding
*
* @api
*
* @param string $encoding
*/
public function setEncoding($encoding)
{
$this->encoding = $encoding;
}
/**
* Ignore errors?
*
* @api
*
* @param boolean $ignoreErrors
*
* @return \Leafo\ScssPhp\Compiler
*/
public function setIgnoreErrors($ignoreErrors)
{
$this->ignoreErrors = $ignoreErrors;
return $this;
}
/**
* Throw error (exception)
*
* @api
*
* @param string $msg Message with optional sprintf()-style vararg
parameters
*
* @throws \Leafo\ScssPhp\Exception\CompilerException
*/
public function throwError($msg)
{
if ($this->ignoreErrors) {
return;
}
$line = $this->sourceLine;
$column = $this->sourceColumn;
$loc = isset($this->sourceNames[$this->sourceIndex])
? $this->sourceNames[$this->sourceIndex] . " on
line $line, at column $column"
: "line: $line, column: $column";
if (func_num_args() > 1) {
$msg = call_user_func_array('sprintf',
func_get_args());
}
$msg = "$msg: $loc";
$callStackMsg = $this->callStackMessage();
if ($callStackMsg) {
$msg .= "\nCall Stack:\n" . $callStackMsg;
}
throw new CompilerException($msg);
}
/**
* Beautify call stack for output
*
* @param boolean $all
* @param null $limit
*
* @return string
*/
protected function callStackMessage($all = false, $limit = null)
{
$callStackMsg = [];
$ncall = 0;
if ($this->callStack) {
foreach (array_reverse($this->callStack) as $call) {
if ($all || (isset($call['n']) &&
$call['n'])) {
$msg = "#" . $ncall++ . " " .
$call['n'] . " ";
$msg .=
(isset($this->sourceNames[$call[Parser::SOURCE_INDEX]])
?
$this->sourceNames[$call[Parser::SOURCE_INDEX]]
: '(unknown file)');
$msg .= " on line " .
$call[Parser::SOURCE_LINE];
$callStackMsg[] = $msg;
if (! is_null($limit) && $ncall>$limit) {
break;
}
}
}
}
return implode("\n", $callStackMsg);
}
/**
* Handle import loop
*
* @param string $name
*
* @throws \Exception
*/
protected function handleImportLoop($name)
{
for ($env = $this->env; $env; $env = $env->parent) {
$file = $this->sourceNames[$env->block->sourceIndex];
if (realpath($file) === $name) {
$this->throwError('An @import loop has been found:
%s imports %s', $file, basename($file));
break;
}
}
}
/**
* Does file exist?
*
* @param string $name
*
* @return boolean
*/
protected function fileExists($name)
{
return file_exists($name) && is_file($name);
}
/**
* Call SCSS @function
*
* @param string $name
* @param array $argValues
* @param array $returnValue
*
* @return boolean Returns true if returnValue is set; otherwise, false
*/
protected function callScssFunction($name, $argValues,
&$returnValue)
{
$func = $this->get(static::$namespaces['function'] .
$name, false);
if (! $func) {
return false;
}
$this->pushEnv();
$storeEnv = $this->storeEnv;
$this->storeEnv = $this->env;
// set the args
if (isset($func->args)) {
$this->applyArguments($func->args, $argValues);
}
// throw away lines and children
$tmp = new OutputBlock;
$tmp->lines = [];
$tmp->children = [];
$this->env->marker = 'function';
$ret = $this->compileChildren($func->children, $tmp,
$this->env->marker . " " . $name);
$this->storeEnv = $storeEnv;
$this->popEnv();
$returnValue = ! isset($ret) ? static::$defaultValue : $ret;
return true;
}
/**
* Call built-in and registered (PHP) functions
*
* @param string $name
* @param array $args
* @param array $returnValue
*
* @return boolean Returns true if returnValue is set; otherwise, false
*/
protected function callNativeFunction($name, $args, &$returnValue)
{
// try a lib function
$name = $this->normalizeName($name);
if (isset($this->userFunctions[$name])) {
// see if we can find a user function
list($f, $prototype) = $this->userFunctions[$name];
} elseif (($f = $this->getBuiltinFunction($name)) &&
is_callable($f)) {
$libName = $f[1];
$prototype = isset(static::$$libName) ? static::$$libName :
null;
} else {
return false;
}
@list($sorted, $kwargs) = $this->sortArgs($prototype, $args);
if ($name !== 'if' && $name !== 'call')
{
foreach ($sorted as &$val) {
$val = $this->reduce($val, true);
}
}
$returnValue = call_user_func($f, $sorted, $kwargs);
if (! isset($returnValue)) {
return false;
}
$returnValue = $this->coerceValue($returnValue);
return true;
}
/**
* Get built-in function
*
* @param string $name Normalized name
*
* @return array
*/
protected function getBuiltinFunction($name)
{
$libName = 'lib' . preg_replace_callback(
'/_(.)/',
function ($m) {
return ucfirst($m[1]);
},
ucfirst($name)
);
return [$this, $libName];
}
/**
* Sorts keyword arguments
*
* @param array $prototype
* @param array $args
*
* @return array
*/
protected function sortArgs($prototype, $args)
{
$keyArgs = [];
$posArgs = [];
// separate positional and keyword arguments
foreach ($args as $arg) {
list($key, $value) = $arg;
$key = $key[1];
if (empty($key)) {
$posArgs[] = empty($arg[2]) ? $value : $arg;
} else {
$keyArgs[$key] = $value;
}
}
if (! isset($prototype)) {
return [$posArgs, $keyArgs];
}
// copy positional args
$finalArgs = array_pad($posArgs, count($prototype), null);
// overwrite positional args with keyword args
foreach ($prototype as $i => $names) {
foreach ((array) $names as $name) {
if (isset($keyArgs[$name])) {
$finalArgs[$i] = $keyArgs[$name];
}
}
}
return [$finalArgs, $keyArgs];
}
/**
* Apply argument values per definition
*
* @param array $argDef
* @param array $argValues
*
* @throws \Exception
*/
protected function applyArguments($argDef, $argValues)
{
$storeEnv = $this->getStoreEnv();
$env = new Environment;
$env->store = $storeEnv->store;
$hasVariable = false;
$args = [];
foreach ($argDef as $i => $arg) {
list($name, $default, $isVariable) = $argDef[$i];
$args[$name] = [$i, $name, $default, $isVariable];
$hasVariable |= $isVariable;
}
$keywordArgs = [];
$deferredKeywordArgs = [];
$remaining = [];
// assign the keyword args
foreach ((array) $argValues as $arg) {
if (! empty($arg[0])) {
if (! isset($args[$arg[0][1]])) {
if ($hasVariable) {
$deferredKeywordArgs[$arg[0][1]] = $arg[1];
} else {
$this->throwError("Mixin or function
doesn't have an argument named $%s.", $arg[0][1]);
break;
}
} elseif ($args[$arg[0][1]][0] < count($remaining)) {
$this->throwError("The argument $%s was passed
both by position and by name.", $arg[0][1]);
break;
} else {
$keywordArgs[$arg[0][1]] = $arg[1];
}
} elseif (count($keywordArgs)) {
$this->throwError('Positional arguments must come
before keyword arguments.');
break;
} elseif ($arg[2] === true) {
$val = $this->reduce($arg[1], true);
if ($val[0] === Type::T_LIST) {
foreach ($val[2] as $name => $item) {
if (! is_numeric($name)) {
$keywordArgs[$name] = $item;
} else {
$remaining[] = $item;
}
}
} elseif ($val[0] === Type::T_MAP) {
foreach ($val[1] as $i => $name) {
$name =
$this->compileStringContent($this->coerceString($name));
$item = $val[2][$i];
if (! is_numeric($name)) {
$keywordArgs[$name] = $item;
} else {
$remaining[] = $item;
}
}
} else {
$remaining[] = $val;
}
} else {
$remaining[] = $arg[1];
}
}
foreach ($args as $arg) {
list($i, $name, $default, $isVariable) = $arg;
if ($isVariable) {
$val = [Type::T_LIST, ',', [], $isVariable];
for ($count = count($remaining); $i < $count; $i++) {
$val[2][] = $remaining[$i];
}
foreach ($deferredKeywordArgs as $itemName => $item) {
$val[2][$itemName] = $item;
}
} elseif (isset($remaining[$i])) {
$val = $remaining[$i];
} elseif (isset($keywordArgs[$name])) {
$val = $keywordArgs[$name];
} elseif (! empty($default)) {
continue;
} else {
$this->throwError("Missing argument $name");
break;
}
$this->set($name, $this->reduce($val, true), true, $env);
}
$storeEnv->store = $env->store;
foreach ($args as $arg) {
list($i, $name, $default, $isVariable) = $arg;
if ($isVariable || isset($remaining[$i]) ||
isset($keywordArgs[$name]) || empty($default)) {
continue;
}
$this->set($name, $this->reduce($default, true), true);
}
}
/**
* Coerce a php value into a scss one
*
* @param mixed $value
*
* @return array|\Leafo\ScssPhp\Node\Number
*/
protected function coerceValue($value)
{
if (is_array($value) || $value instanceof \ArrayAccess) {
return $value;
}
if (is_bool($value)) {
return $this->toBool($value);
}
if ($value === null) {
return static::$null;
}
if (is_numeric($value)) {
return new Node\Number($value, '');
}
if ($value === '') {
return static::$emptyString;
}
if (preg_match('/^(#([0-9a-f]{6})|#([0-9a-f]{3}))$/i',
$value, $m)) {
$color = [Type::T_COLOR];
if (isset($m[3])) {
$num = hexdec($m[3]);
foreach ([3, 2, 1] as $i) {
$t = $num & 0xf;
$color[$i] = $t << 4 | $t;
$num >>= 4;
}
} else {
$num = hexdec($m[2]);
foreach ([3, 2, 1] as $i) {
$color[$i] = $num & 0xff;
$num >>= 8;
}
}
return $color;
}
return [Type::T_KEYWORD, $value];
}
/**
* Coerce something to map
*
* @param array $item
*
* @return array
*/
protected function coerceMap($item)
{
if ($item[0] === Type::T_MAP) {
return $item;
}
if ($item === static::$emptyList) {
return static::$emptyMap;
}
return [Type::T_MAP, [$item], [static::$null]];
}
/**
* Coerce something to list
*
* @param array $item
* @param string $delim
*
* @return array
*/
protected function coerceList($item, $delim = ',')
{
if (isset($item) && $item[0] === Type::T_LIST) {
return $item;
}
if (isset($item) && $item[0] === Type::T_MAP) {
$keys = $item[1];
$values = $item[2];
$list = [];
for ($i = 0, $s = count($keys); $i < $s; $i++) {
$key = $keys[$i];
$value = $values[$i];
$list[] = [
Type::T_LIST,
'',
[[Type::T_KEYWORD,
$this->compileStringContent($this->coerceString($key))], $value]
];
}
return [Type::T_LIST, ',', $list];
}
return [Type::T_LIST, $delim, ! isset($item) ? []: [$item]];
}
/**
* Coerce color for expression
*
* @param array $value
*
* @return array|null
*/
protected function coerceForExpression($value)
{
if ($color = $this->coerceColor($value)) {
return $color;
}
return $value;
}
/**
* Coerce value to color
*
* @param array $value
*
* @return array|null
*/
protected function coerceColor($value)
{
switch ($value[0]) {
case Type::T_COLOR:
return $value;
case Type::T_KEYWORD:
$name = strtolower($value[1]);
if (isset(Colors::$cssColors[$name])) {
$rgba = explode(',',
Colors::$cssColors[$name]);
return isset($rgba[3])
? [Type::T_COLOR, (int) $rgba[0], (int) $rgba[1],
(int) $rgba[2], (int) $rgba[3]]
: [Type::T_COLOR, (int) $rgba[0], (int) $rgba[1],
(int) $rgba[2]];
}
return null;
}
return null;
}
/**
* Coerce value to string
*
* @param array $value
*
* @return array|null
*/
protected function coerceString($value)
{
if ($value[0] === Type::T_STRING) {
return $value;
}
return [Type::T_STRING, '',
[$this->compileValue($value)]];
}
/**
* Coerce value to a percentage
*
* @param array $value
*
* @return integer|float
*/
protected function coercePercent($value)
{
if ($value[0] === Type::T_NUMBER) {
if (! empty($value[2]['%'])) {
return $value[1] / 100;
}
return $value[1];
}
return 0;
}
/**
* Assert value is a map
*
* @api
*
* @param array $value
*
* @return array
*
* @throws \Exception
*/
public function assertMap($value)
{
$value = $this->coerceMap($value);
if ($value[0] !== Type::T_MAP) {
$this->throwError('expecting map, %s received',
$value[0]);
}
return $value;
}
/**
* Assert value is a list
*
* @api
*
* @param array $value
*
* @return array
*
* @throws \Exception
*/
public function assertList($value)
{
if ($value[0] !== Type::T_LIST) {
$this->throwError('expecting list, %s received',
$value[0]);
}
return $value;
}
/**
* Assert value is a color
*
* @api
*
* @param array $value
*
* @return array
*
* @throws \Exception
*/
public function assertColor($value)
{
if ($color = $this->coerceColor($value)) {
return $color;
}
$this->throwError('expecting color, %s received',
$value[0]);
}
/**
* Assert value is a number
*
* @api
*
* @param array $value
*
* @return integer|float
*
* @throws \Exception
*/
public function assertNumber($value)
{
if ($value[0] !== Type::T_NUMBER) {
$this->throwError('expecting number, %s received',
$value[0]);
}
return $value[1];
}
/**
* Make sure a color's components don't go out of bounds
*
* @param array $c
*
* @return array
*/
protected function fixColor($c)
{
foreach ([1, 2, 3] as $i) {
if ($c[$i] < 0) {
$c[$i] = 0;
}
if ($c[$i] > 255) {
$c[$i] = 255;
}
}
return $c;
}
/**
* Convert RGB to HSL
*
* @api
*
* @param integer $red
* @param integer $green
* @param integer $blue
*
* @return array
*/
public function toHSL($red, $green, $blue)
{
$min = min($red, $green, $blue);
$max = max($red, $green, $blue);
$l = $min + $max;
$d = $max - $min;
if ((int) $d === 0) {
$h = $s = 0;
} else {
if ($l < 255) {
$s = $d / $l;
} else {
$s = $d / (510 - $l);
}
if ($red == $max) {
$h = 60 * ($green - $blue) / $d;
} elseif ($green == $max) {
$h = 60 * ($blue - $red) / $d + 120;
} elseif ($blue == $max) {
$h = 60 * ($red - $green) / $d + 240;
}
}
return [Type::T_HSL, fmod($h, 360), $s * 100, $l / 5.1];
}
/**
* Hue to RGB helper
*
* @param float $m1
* @param float $m2
* @param float $h
*
* @return float
*/
protected function hueToRGB($m1, $m2, $h)
{
if ($h < 0) {
$h += 1;
} elseif ($h > 1) {
$h -= 1;
}
if ($h * 6 < 1) {
return $m1 + ($m2 - $m1) * $h * 6;
}
if ($h * 2 < 1) {
return $m2;
}
if ($h * 3 < 2) {
return $m1 + ($m2 - $m1) * (2/3 - $h) * 6;
}
return $m1;
}
/**
* Convert HSL to RGB
*
* @api
*
* @param integer $hue H from 0 to 360
* @param integer $saturation S from 0 to 100
* @param integer $lightness L from 0 to 100
*
* @return array
*/
public function toRGB($hue, $saturation, $lightness)
{
if ($hue < 0) {
$hue += 360;
}
$h = $hue / 360;
$s = min(100, max(0, $saturation)) / 100;
$l = min(100, max(0, $lightness)) / 100;
$m2 = $l <= 0.5 ? $l * ($s + 1) : $l + $s - $l * $s;
$m1 = $l * 2 - $m2;
$r = $this->hueToRGB($m1, $m2, $h + 1/3) * 255;
$g = $this->hueToRGB($m1, $m2, $h) * 255;
$b = $this->hueToRGB($m1, $m2, $h - 1/3) * 255;
$out = [Type::T_COLOR, $r, $g, $b];
return $out;
}
// Built in functions
//protected static $libCall = ['name', 'args...'];
protected function libCall($args, $kwargs)
{
$name =
$this->compileStringContent($this->coerceString($this->reduce(array_shift($args),
true)));
$posArgs = [];
foreach ($args as $arg) {
if (empty($arg[0])) {
if ($arg[2] === true) {
$tmp = $this->reduce($arg[1]);
if ($tmp[0] === Type::T_LIST) {
foreach ($tmp[2] as $item) {
$posArgs[] = [null, $item, false];
}
} else {
$posArgs[] = [null, $tmp, true];
}
continue;
}
$posArgs[] = [null, $this->reduce($arg), false];
continue;
}
$posArgs[] = [null, $arg, false];
}
if (count($kwargs)) {
foreach ($kwargs as $key => $value) {
$posArgs[] = [[Type::T_VARIABLE, $key], $value, false];
}
}
return $this->reduce([Type::T_FUNCTION_CALL, $name, $posArgs]);
}
protected static $libIf = ['condition', 'if-true',
'if-false'];
protected function libIf($args)
{
list($cond, $t, $f) = $args;
if (! $this->isTruthy($this->reduce($cond, true))) {
return $this->reduce($f, true);
}
return $this->reduce($t, true);
}
protected static $libIndex = ['list', 'value'];
protected function libIndex($args)
{
list($list, $value) = $args;
if ($value[0] === Type::T_MAP) {
return static::$null;
}
if ($list[0] === Type::T_MAP ||
$list[0] === Type::T_STRING ||
$list[0] === Type::T_KEYWORD ||
$list[0] === Type::T_INTERPOLATE
) {
$list = $this->coerceList($list, ' ');
}
if ($list[0] !== Type::T_LIST) {
return static::$null;
}
$values = [];
foreach ($list[2] as $item) {
$values[] = $this->normalizeValue($item);
}
$key = array_search($this->normalizeValue($value), $values);
return false === $key ? static::$null : $key + 1;
}
protected static $libRgb = ['red', 'green',
'blue'];
protected function libRgb($args)
{
list($r, $g, $b) = $args;
return [Type::T_COLOR, $r[1], $g[1], $b[1]];
}
protected static $libRgba = [
['red', 'color'],
'green', 'blue', 'alpha'];
protected function libRgba($args)
{
if ($color = $this->coerceColor($args[0])) {
$num = isset($args[3]) ? $args[3] : $args[1];
$alpha = $this->assertNumber($num);
$color[4] = $alpha;
return $color;
}
list($r, $g, $b, $a) = $args;
return [Type::T_COLOR, $r[1], $g[1], $b[1], $a[1]];
}
// helper function for adjust_color, change_color, and scale_color
protected function alterColor($args, $fn)
{
$color = $this->assertColor($args[0]);
foreach ([1, 2, 3, 7] as $i) {
if (isset($args[$i])) {
$val = $this->assertNumber($args[$i]);
$ii = $i === 7 ? 4 : $i; // alpha
$color[$ii] = call_user_func($fn, isset($color[$ii]) ?
$color[$ii] : 0, $val, $i);
}
}
if (isset($args[4]) || isset($args[5]) || isset($args[6])) {
$hsl = $this->toHSL($color[1], $color[2], $color[3]);
foreach ([4, 5, 6] as $i) {
if (isset($args[$i])) {
$val = $this->assertNumber($args[$i]);
$hsl[$i - 3] = call_user_func($fn, $hsl[$i - 3], $val,
$i);
}
}
$rgb = $this->toRGB($hsl[1], $hsl[2], $hsl[3]);
if (isset($color[4])) {
$rgb[4] = $color[4];
}
$color = $rgb;
}
return $color;
}
protected static $libAdjustColor = [
'color', 'red', 'green',
'blue',
'hue', 'saturation', 'lightness',
'alpha'
];
protected function libAdjustColor($args)
{
return $this->alterColor($args, function ($base, $alter, $i) {
return $base + $alter;
});
}
protected static $libChangeColor = [
'color', 'red', 'green',
'blue',
'hue', 'saturation', 'lightness',
'alpha'
];
protected function libChangeColor($args)
{
return $this->alterColor($args, function ($base, $alter, $i) {
return $alter;
});
}
protected static $libScaleColor = [
'color', 'red', 'green',
'blue',
'hue', 'saturation', 'lightness',
'alpha'
];
protected function libScaleColor($args)
{
return $this->alterColor($args, function ($base, $scale, $i) {
// 1, 2, 3 - rgb
// 4, 5, 6 - hsl
// 7 - a
switch ($i) {
case 1:
case 2:
case 3:
$max = 255;
break;
case 4:
$max = 360;
break;
case 7:
$max = 1;
break;
default:
$max = 100;
}
$scale = $scale / 100;
if ($scale < 0) {
return $base * $scale + $base;
}
return ($max - $base) * $scale + $base;
});
}
protected static $libIeHexStr = ['color'];
protected function libIeHexStr($args)
{
$color = $this->coerceColor($args[0]);
$color[4] = isset($color[4]) ? round(255 * $color[4]) : 255;
return sprintf('#%02X%02X%02X%02X', $color[4], $color[1],
$color[2], $color[3]);
}
protected static $libRed = ['color'];
protected function libRed($args)
{
$color = $this->coerceColor($args[0]);
return $color[1];
}
protected static $libGreen = ['color'];
protected function libGreen($args)
{
$color = $this->coerceColor($args[0]);
return $color[2];
}
protected static $libBlue = ['color'];
protected function libBlue($args)
{
$color = $this->coerceColor($args[0]);
return $color[3];
}
protected static $libAlpha = ['color'];
protected function libAlpha($args)
{
if ($color = $this->coerceColor($args[0])) {
return isset($color[4]) ? $color[4] : 1;
}
// this might be the IE function, so return value unchanged
return null;
}
protected static $libOpacity = ['color'];
protected function libOpacity($args)
{
$value = $args[0];
if ($value[0] === Type::T_NUMBER) {
return null;
}
return $this->libAlpha($args);
}
// mix two colors
protected static $libMix = ['color-1', 'color-2',
'weight'];
protected function libMix($args)
{
list($first, $second, $weight) = $args;
$first = $this->assertColor($first);
$second = $this->assertColor($second);
if (! isset($weight)) {
$weight = 0.5;
} else {
$weight = $this->coercePercent($weight);
}
$firstAlpha = isset($first[4]) ? $first[4] : 1;
$secondAlpha = isset($second[4]) ? $second[4] : 1;
$w = $weight * 2 - 1;
$a = $firstAlpha - $secondAlpha;
$w1 = (($w * $a === -1 ? $w : ($w + $a) / (1 + $w * $a)) + 1) /
2.0;
$w2 = 1.0 - $w1;
$new = [Type::T_COLOR,
$w1 * $first[1] + $w2 * $second[1],
$w1 * $first[2] + $w2 * $second[2],
$w1 * $first[3] + $w2 * $second[3],
];
if ($firstAlpha != 1.0 || $secondAlpha != 1.0) {
$new[] = $firstAlpha * $weight + $secondAlpha * (1 - $weight);
}
return $this->fixColor($new);
}
protected static $libHsl = ['hue', 'saturation',
'lightness'];
protected function libHsl($args)
{
list($h, $s, $l) = $args;
return $this->toRGB($h[1], $s[1], $l[1]);
}
protected static $libHsla = ['hue', 'saturation',
'lightness', 'alpha'];
protected function libHsla($args)
{
list($h, $s, $l, $a) = $args;
$color = $this->toRGB($h[1], $s[1], $l[1]);
$color[4] = $a[1];
return $color;
}
protected static $libHue = ['color'];
protected function libHue($args)
{
$color = $this->assertColor($args[0]);
$hsl = $this->toHSL($color[1], $color[2], $color[3]);
return new Node\Number($hsl[1], 'deg');
}
protected static $libSaturation = ['color'];
protected function libSaturation($args)
{
$color = $this->assertColor($args[0]);
$hsl = $this->toHSL($color[1], $color[2], $color[3]);
return new Node\Number($hsl[2], '%');
}
protected static $libLightness = ['color'];
protected function libLightness($args)
{
$color = $this->assertColor($args[0]);
$hsl = $this->toHSL($color[1], $color[2], $color[3]);
return new Node\Number($hsl[3], '%');
}
protected function adjustHsl($color, $idx, $amount)
{
$hsl = $this->toHSL($color[1], $color[2], $color[3]);
$hsl[$idx] += $amount;
$out = $this->toRGB($hsl[1], $hsl[2], $hsl[3]);
if (isset($color[4])) {
$out[4] = $color[4];
}
return $out;
}
protected static $libAdjustHue = ['color',
'degrees'];
protected function libAdjustHue($args)
{
$color = $this->assertColor($args[0]);
$degrees = $this->assertNumber($args[1]);
return $this->adjustHsl($color, 1, $degrees);
}
protected static $libLighten = ['color', 'amount'];
protected function libLighten($args)
{
$color = $this->assertColor($args[0]);
$amount = Util::checkRange('amount', new Range(0, 100),
$args[1], '%');
return $this->adjustHsl($color, 3, $amount);
}
protected static $libDarken = ['color', 'amount'];
protected function libDarken($args)
{
$color = $this->assertColor($args[0]);
$amount = Util::checkRange('amount', new Range(0, 100),
$args[1], '%');
return $this->adjustHsl($color, 3, -$amount);
}
protected static $libSaturate = ['color',
'amount'];
protected function libSaturate($args)
{
$value = $args[0];
if ($value[0] === Type::T_NUMBER) {
return null;
}
$color = $this->assertColor($value);
$amount = 100 * $this->coercePercent($args[1]);
return $this->adjustHsl($color, 2, $amount);
}
protected static $libDesaturate = ['color',
'amount'];
protected function libDesaturate($args)
{
$color = $this->assertColor($args[0]);
$amount = 100 * $this->coercePercent($args[1]);
return $this->adjustHsl($color, 2, -$amount);
}
protected static $libGrayscale = ['color'];
protected function libGrayscale($args)
{
$value = $args[0];
if ($value[0] === Type::T_NUMBER) {
return null;
}
return $this->adjustHsl($this->assertColor($value), 2, -100);
}
protected static $libComplement = ['color'];
protected function libComplement($args)
{
return $this->adjustHsl($this->assertColor($args[0]), 1,
180);
}
protected static $libInvert = ['color'];
protected function libInvert($args)
{
$value = $args[0];
if ($value[0] === Type::T_NUMBER) {
return null;
}
$color = $this->assertColor($value);
$color[1] = 255 - $color[1];
$color[2] = 255 - $color[2];
$color[3] = 255 - $color[3];
return $color;
}
// increases opacity by amount
protected static $libOpacify = ['color', 'amount'];
protected function libOpacify($args)
{
$color = $this->assertColor($args[0]);
$amount = $this->coercePercent($args[1]);
$color[4] = (isset($color[4]) ? $color[4] : 1) + $amount;
$color[4] = min(1, max(0, $color[4]));
return $color;
}
protected static $libFadeIn = ['color', 'amount'];
protected function libFadeIn($args)
{
return $this->libOpacify($args);
}
// decreases opacity by amount
protected static $libTransparentize = ['color',
'amount'];
protected function libTransparentize($args)
{
$color = $this->assertColor($args[0]);
$amount = $this->coercePercent($args[1]);
$color[4] = (isset($color[4]) ? $color[4] : 1) - $amount;
$color[4] = min(1, max(0, $color[4]));
return $color;
}
protected static $libFadeOut = ['color', 'amount'];
protected function libFadeOut($args)
{
return $this->libTransparentize($args);
}
protected static $libUnquote = ['string'];
protected function libUnquote($args)
{
$str = $args[0];
if ($str[0] === Type::T_STRING) {
$str[1] = '';
}
return $str;
}
protected static $libQuote = ['string'];
protected function libQuote($args)
{
$value = $args[0];
if ($value[0] === Type::T_STRING && ! empty($value[1])) {
return $value;
}
return [Type::T_STRING, '"', [$value]];
}
protected static $libPercentage = ['value'];
protected function libPercentage($args)
{
return new Node\Number($this->coercePercent($args[0]) * 100,
'%');
}
protected static $libRound = ['value'];
protected function libRound($args)
{
$num = $args[0];
return new Node\Number(round($num[1]), $num[2]);
}
protected static $libFloor = ['value'];
protected function libFloor($args)
{
$num = $args[0];
return new Node\Number(floor($num[1]), $num[2]);
}
protected static $libCeil = ['value'];
protected function libCeil($args)
{
$num = $args[0];
return new Node\Number(ceil($num[1]), $num[2]);
}
protected static $libAbs = ['value'];
protected function libAbs($args)
{
$num = $args[0];
return new Node\Number(abs($num[1]), $num[2]);
}
protected function libMin($args)
{
$numbers = $this->getNormalizedNumbers($args);
$min = null;
foreach ($numbers as $key => $number) {
if (null === $min || $number[1] <= $min[1]) {
$min = [$key, $number[1]];
}
}
return $args[$min[0]];
}
protected function libMax($args)
{
$numbers = $this->getNormalizedNumbers($args);
$max = null;
foreach ($numbers as $key => $number) {
if (null === $max || $number[1] >= $max[1]) {
$max = [$key, $number[1]];
}
}
return $args[$max[0]];
}
/**
* Helper to normalize args containing numbers
*
* @param array $args
*
* @return array
*/
protected function getNormalizedNumbers($args)
{
$unit = null;
$originalUnit = null;
$numbers = [];
foreach ($args as $key => $item) {
if ($item[0] !== Type::T_NUMBER) {
$this->throwError('%s is not a number',
$item[0]);
break;
}
$number = $item->normalize();
if (null === $unit) {
$unit = $number[2];
$originalUnit = $item->unitStr();
} elseif ($number[1] && $unit !== $number[2]) {
$this->throwError('Incompatible units:
"%s" and "%s".', $originalUnit,
$item->unitStr());
break;
}
$numbers[$key] = $number;
}
return $numbers;
}
protected static $libLength = ['list'];
protected function libLength($args)
{
$list = $this->coerceList($args[0]);
return count($list[2]);
}
//protected static $libListSeparator = ['list...'];
protected function libListSeparator($args)
{
if (count($args) > 1) {
return 'comma';
}
$list = $this->coerceList($args[0]);
if (count($list[2]) <= 1) {
return 'space';
}
if ($list[1] === ',') {
return 'comma';
}
return 'space';
}
protected static $libNth = ['list', 'n'];
protected function libNth($args)
{
$list = $this->coerceList($args[0]);
$n = $this->assertNumber($args[1]);
if ($n > 0) {
$n--;
} elseif ($n < 0) {
$n += count($list[2]);
}
return isset($list[2][$n]) ? $list[2][$n] : static::$defaultValue;
}
protected static $libSetNth = ['list', 'n',
'value'];
protected function libSetNth($args)
{
$list = $this->coerceList($args[0]);
$n = $this->assertNumber($args[1]);
if ($n > 0) {
$n--;
} elseif ($n < 0) {
$n += count($list[2]);
}
if (! isset($list[2][$n])) {
$this->throwError('Invalid argument for
"n"');
return null;
}
$list[2][$n] = $args[2];
return $list;
}
protected static $libMapGet = ['map', 'key'];
protected function libMapGet($args)
{
$map = $this->assertMap($args[0]);
$key =
$this->compileStringContent($this->coerceString($args[1]));
for ($i = count($map[1]) - 1; $i >= 0; $i--) {
if ($key ===
$this->compileStringContent($this->coerceString($map[1][$i]))) {
return $map[2][$i];
}
}
return static::$null;
}
protected static $libMapKeys = ['map'];
protected function libMapKeys($args)
{
$map = $this->assertMap($args[0]);
$keys = $map[1];
return [Type::T_LIST, ',', $keys];
}
protected static $libMapValues = ['map'];
protected function libMapValues($args)
{
$map = $this->assertMap($args[0]);
$values = $map[2];
return [Type::T_LIST, ',', $values];
}
protected static $libMapRemove = ['map', 'key'];
protected function libMapRemove($args)
{
$map = $this->assertMap($args[0]);
$key =
$this->compileStringContent($this->coerceString($args[1]));
for ($i = count($map[1]) - 1; $i >= 0; $i--) {
if ($key ===
$this->compileStringContent($this->coerceString($map[1][$i]))) {
array_splice($map[1], $i, 1);
array_splice($map[2], $i, 1);
}
}
return $map;
}
protected static $libMapHasKey = ['map', 'key'];
protected function libMapHasKey($args)
{
$map = $this->assertMap($args[0]);
$key =
$this->compileStringContent($this->coerceString($args[1]));
for ($i = count($map[1]) - 1; $i >= 0; $i--) {
if ($key ===
$this->compileStringContent($this->coerceString($map[1][$i]))) {
return true;
}
}
return false;
}
protected static $libMapMerge = ['map-1', 'map-2'];
protected function libMapMerge($args)
{
$map1 = $this->assertMap($args[0]);
$map2 = $this->assertMap($args[1]);
foreach ($map2[1] as $i2 => $key2) {
$key =
$this->compileStringContent($this->coerceString($key2));
foreach ($map1[1] as $i1 => $key1) {
if ($key ===
$this->compileStringContent($this->coerceString($key1))) {
$map1[2][$i1] = $map2[2][$i2];
continue 2;
}
}
$map1[1][] = $map2[1][$i2];
$map1[2][] = $map2[2][$i2];
}
return $map1;
}
protected static $libKeywords = ['args'];
protected function libKeywords($args)
{
$this->assertList($args[0]);
$keys = [];
$values = [];
foreach ($args[0][2] as $name => $arg) {
$keys[] = [Type::T_KEYWORD, $name];
$values[] = $arg;
}
return [Type::T_MAP, $keys, $values];
}
protected function listSeparatorForJoin($list1, $sep)
{
if (! isset($sep)) {
return $list1[1];
}
switch ($this->compileValue($sep)) {
case 'comma':
return ',';
case 'space':
return '';
default:
return $list1[1];
}
}
protected static $libJoin = ['list1', 'list2',
'separator'];
protected function libJoin($args)
{
list($list1, $list2, $sep) = $args;
$list1 = $this->coerceList($list1, ' ');
$list2 = $this->coerceList($list2, ' ');
$sep = $this->listSeparatorForJoin($list1, $sep);
return [Type::T_LIST, $sep, array_merge($list1[2], $list2[2])];
}
protected static $libAppend = ['list', 'val',
'separator'];
protected function libAppend($args)
{
list($list1, $value, $sep) = $args;
$list1 = $this->coerceList($list1, ' ');
$sep = $this->listSeparatorForJoin($list1, $sep);
return [Type::T_LIST, $sep, array_merge($list1[2], [$value])];
}
protected function libZip($args)
{
foreach ($args as $arg) {
$this->assertList($arg);
}
$lists = [];
$firstList = array_shift($args);
foreach ($firstList[2] as $key => $item) {
$list = [Type::T_LIST, '', [$item]];
foreach ($args as $arg) {
if (isset($arg[2][$key])) {
$list[2][] = $arg[2][$key];
} else {
break 2;
}
}
$lists[] = $list;
}
return [Type::T_LIST, ',', $lists];
}
protected static $libTypeOf = ['value'];
protected function libTypeOf($args)
{
$value = $args[0];
switch ($value[0]) {
case Type::T_KEYWORD:
if ($value === static::$true || $value === static::$false)
{
return 'bool';
}
if ($this->coerceColor($value)) {
return 'color';
}
// fall-thru
case Type::T_FUNCTION:
return 'string';
case Type::T_LIST:
if (isset($value[3]) && $value[3]) {
return 'arglist';
}
// fall-thru
default:
return $value[0];
}
}
protected static $libUnit = ['number'];
protected function libUnit($args)
{
$num = $args[0];
if ($num[0] === Type::T_NUMBER) {
return [Type::T_STRING, '"',
[$num->unitStr()]];
}
return '';
}
protected static $libUnitless = ['number'];
protected function libUnitless($args)
{
$value = $args[0];
return $value[0] === Type::T_NUMBER &&
$value->unitless();
}
protected static $libComparable = ['number-1',
'number-2'];
protected function libComparable($args)
{
list($number1, $number2) = $args;
if (! isset($number1[0]) || $number1[0] !== Type::T_NUMBER ||
! isset($number2[0]) || $number2[0] !== Type::T_NUMBER
) {
$this->throwError('Invalid argument(s) for
"comparable"');
return null;
}
$number1 = $number1->normalize();
$number2 = $number2->normalize();
return $number1[2] === $number2[2] || $number1->unitless() ||
$number2->unitless();
}
protected static $libStrIndex = ['string',
'substring'];
protected function libStrIndex($args)
{
$string = $this->coerceString($args[0]);
$stringContent = $this->compileStringContent($string);
$substring = $this->coerceString($args[1]);
$substringContent = $this->compileStringContent($substring);
$result = strpos($stringContent, $substringContent);
return $result === false ? static::$null : new Node\Number($result
+ 1, '');
}
protected static $libStrInsert = ['string',
'insert', 'index'];
protected function libStrInsert($args)
{
$string = $this->coerceString($args[0]);
$stringContent = $this->compileStringContent($string);
$insert = $this->coerceString($args[1]);
$insertContent = $this->compileStringContent($insert);
list(, $index) = $args[2];
$string[2] = [substr_replace($stringContent, $insertContent, $index
- 1, 0)];
return $string;
}
protected static $libStrLength = ['string'];
protected function libStrLength($args)
{
$string = $this->coerceString($args[0]);
$stringContent = $this->compileStringContent($string);
return new Node\Number(strlen($stringContent), '');
}
protected static $libStrSlice = ['string',
'start-at', 'end-at'];
protected function libStrSlice($args)
{
if (isset($args[2]) && $args[2][1] == 0) {
return static::$nullString;
}
$string = $this->coerceString($args[0]);
$stringContent = $this->compileStringContent($string);
$start = (int) $args[1][1];
if ($start > 0) {
$start--;
}
$end = (int) $args[2][1];
$length = $end < 0 ? $end + 1 : ($end > 0 ? $end - $start :
$end);
$string[2] = $length
? [substr($stringContent, $start, $length)]
: [substr($stringContent, $start)];
return $string;
}
protected static $libToLowerCase = ['string'];
protected function libToLowerCase($args)
{
$string = $this->coerceString($args[0]);
$stringContent = $this->compileStringContent($string);
$string[2] = [function_exists('mb_strtolower') ?
mb_strtolower($stringContent) : strtolower($stringContent)];
return $string;
}
protected static $libToUpperCase = ['string'];
protected function libToUpperCase($args)
{
$string = $this->coerceString($args[0]);
$stringContent = $this->compileStringContent($string);
$string[2] = [function_exists('mb_strtoupper') ?
mb_strtoupper($stringContent) : strtoupper($stringContent)];
return $string;
}
protected static $libFeatureExists = ['feature'];
protected function libFeatureExists($args)
{
$string = $this->coerceString($args[0]);
$name = $this->compileStringContent($string);
return $this->toBool(
array_key_exists($name, $this->registeredFeatures) ?
$this->registeredFeatures[$name] : false
);
}
protected static $libFunctionExists = ['name'];
protected function libFunctionExists($args)
{
$string = $this->coerceString($args[0]);
$name = $this->compileStringContent($string);
// user defined functions
if ($this->has(static::$namespaces['function'] .
$name)) {
return true;
}
$name = $this->normalizeName($name);
if (isset($this->userFunctions[$name])) {
return true;
}
// built-in functions
$f = $this->getBuiltinFunction($name);
return $this->toBool(is_callable($f));
}
protected static $libGlobalVariableExists = ['name'];
protected function libGlobalVariableExists($args)
{
$string = $this->coerceString($args[0]);
$name = $this->compileStringContent($string);
return $this->has($name, $this->rootEnv);
}
protected static $libMixinExists = ['name'];
protected function libMixinExists($args)
{
$string = $this->coerceString($args[0]);
$name = $this->compileStringContent($string);
return $this->has(static::$namespaces['mixin'] .
$name);
}
protected static $libVariableExists = ['name'];
protected function libVariableExists($args)
{
$string = $this->coerceString($args[0]);
$name = $this->compileStringContent($string);
return $this->has($name);
}
/**
* Workaround IE7's content counter bug.
*
* @param array $args
*
* @return array
*/
protected function libCounter($args)
{
$list = array_map([$this, 'compileValue'], $args);
return [Type::T_STRING, '', ['counter(' .
implode(',', $list) . ')']];
}
protected static $libRandom = ['limit'];
protected function libRandom($args)
{
if (isset($args[0])) {
$n = $this->assertNumber($args[0]);
if ($n < 1) {
$this->throwError("limit must be greater than or
equal to 1");
return null;
}
return new Node\Number(mt_rand(1, $n), '');
}
return new Node\Number(mt_rand(1, mt_getrandmax()), '');
}
protected function libUniqueId()
{
static $id;
if (! isset($id)) {
$id = mt_rand(0, pow(36, 8));
}
$id += mt_rand(0, 10) + 1;
return [Type::T_STRING, '', ['u' .
str_pad(base_convert($id, 10, 36), 8, '0', STR_PAD_LEFT)]];
}
protected static $libInspect = ['value'];
protected function libInspect($args)
{
if ($args[0] === static::$null) {
return [Type::T_KEYWORD, 'null'];
}
return $args[0];
}
/**
* Preprocess selector args
*
* @param array $arg
*
* @return array|boolean
*/
protected function getSelectorArg($arg)
{
static $parser = null;
if (is_null($parser)) {
$parser = $this->parserFactory(__METHOD__);
}
$arg = $this->libUnquote([$arg]);
$arg = $this->compileValue($arg);
$parsedSelector = [];
if ($parser->parseSelector($arg, $parsedSelector)) {
$selector = $this->evalSelectors($parsedSelector);
$gluedSelector = $this->glueFunctionSelectors($selector);
return $gluedSelector;
}
return false;
}
/**
* Postprocess selector to output in right format
*
* @param array $selectors
*
* @return string
*/
protected function formatOutputSelector($selectors)
{
$selectors = $this->collapseSelectors($selectors, true);
return $selectors;
}
protected static $libIsSuperselector = ['super',
'sub'];
protected function libIsSuperselector($args)
{
list($super, $sub) = $args;
$super = $this->getSelectorArg($super);
$sub = $this->getSelectorArg($sub);
return $this->isSuperSelector($super, $sub);
}
/**
* Test a $super selector again $sub
*
* @param array $super
* @param array $sub
*
* @return boolean
*/
protected function isSuperSelector($super, $sub)
{
// one and only one selector for each arg
if (! $super || count($super) !== 1) {
$this->throwError("Invalid super selector for
isSuperSelector()");
}
if (! $sub || count($sub) !== 1) {
$this->throwError("Invalid sub selector for
isSuperSelector()");
}
$super = reset($super);
$sub = reset($sub);
$i = 0;
$nextMustMatch = false;
foreach ($super as $node) {
$compound = '';
array_walk_recursive(
$node,
function ($value, $key) use (&$compound) {
$compound .= $value;
}
);
if ($this->isImmediateRelationshipCombinator($compound)) {
if ($node !== $sub[$i]) {
return false;
}
$nextMustMatch = true;
$i++;
} else {
while ($i < count($sub) && !
$this->isSuperPart($node, $sub[$i])) {
if ($nextMustMatch) {
return false;
}
$i++;
}
if ($i >= count($sub)) {
return false;
}
$nextMustMatch = false;
$i++;
}
}
return true;
}
/**
* Test a part of super selector again a part of sub selector
*
* @param array $superParts
* @param array $subParts
*
* @return boolean
*/
protected function isSuperPart($superParts, $subParts)
{
$i = 0;
foreach ($superParts as $superPart) {
while ($i < count($subParts) && $subParts[$i] !==
$superPart) {
$i++;
}
if ($i >= count($subParts)) {
return false;
}
$i++;
}
return true;
}
//protected static $libSelectorAppend = ['selector...'];
protected function libSelectorAppend($args)
{
if (count($args) < 1) {
$this->throwError("selector-append() needs at least 1
argument");
}
$selectors = array_map([$this, 'getSelectorArg'], $args);
return
$this->formatOutputSelector($this->selectorAppend($selectors));
}
/**
* Append parts of the last selector in the list to the previous,
recursively
*
* @param array $selectors
*
* @return array
*
* @throws \Leafo\ScssPhp\Exception\CompilerException
*/
protected function selectorAppend($selectors)
{
$lastSelectors = array_pop($selectors);
if (! $lastSelectors) {
$this->throwError("Invalid selector list in
selector-append()");
}
while (count($selectors)) {
$previousSelectors = array_pop($selectors);
if (! $previousSelectors) {
$this->throwError("Invalid selector list in
selector-append()");
}
// do the trick, happening $lastSelector to $previousSelector
$appended = [];
foreach ($lastSelectors as $lastSelector) {
$previous = $previousSelectors;
foreach ($lastSelector as $lastSelectorParts) {
foreach ($lastSelectorParts as $lastSelectorPart) {
foreach ($previous as $i => $previousSelector) {
foreach ($previousSelector as $j =>
$previousSelectorParts) {
$previous[$i][$j][] = $lastSelectorPart;
}
}
}
}
foreach ($previous as $ps) {
$appended[] = $ps;
}
}
$lastSelectors = $appended;
}
return $lastSelectors;
}
protected static $libSelectorExtend = ['selectors',
'extendee', 'extender'];
protected function libSelectorExtend($args)
{
list($selectors, $extendee, $extender) = $args;
$selectors = $this->getSelectorArg($selectors);
$extendee = $this->getSelectorArg($extendee);
$extender = $this->getSelectorArg($extender);
if (! $selectors || ! $extendee || ! $extender) {
$this->throwError("selector-extend() invalid
arguments");
}
$extended = $this->extendOrReplaceSelectors($selectors,
$extendee, $extender);
return $this->formatOutputSelector($extended);
}
protected static $libSelectorReplace = ['selectors',
'original', 'replacement'];
protected function libSelectorReplace($args)
{
list($selectors, $original, $replacement) = $args;
$selectors = $this->getSelectorArg($selectors);
$original = $this->getSelectorArg($original);
$replacement = $this->getSelectorArg($replacement);
if (! $selectors || ! $original || ! $replacement) {
$this->throwError("selector-replace() invalid
arguments");
}
$replaced = $this->extendOrReplaceSelectors($selectors,
$original, $replacement, true);
return $this->formatOutputSelector($replaced);
}
/**
* Extend/replace in selectors
* used by selector-extend and selector-replace that use the same logic
*
* @param array $selectors
* @param array $extendee
* @param array $extender
* @param boolean $replace
*
* @return array
*/
protected function extendOrReplaceSelectors($selectors, $extendee,
$extender, $replace = false)
{
$saveExtends = $this->extends;
$saveExtendsMap = $this->extendsMap;
$this->extends = [];
$this->extendsMap = [];
foreach ($extendee as $es) {
// only use the first one
$this->pushExtends(reset($es), $extender, null);
}
$extended = [];
foreach ($selectors as $selector) {
if (! $replace) {
$extended[] = $selector;
}
$n = count($extended);
$this->matchExtends($selector, $extended);
// if didnt match, keep the original selector if we are in a
replace operation
if ($replace and count($extended) === $n) {
$extended[] = $selector;
}
}
$this->extends = $saveExtends;
$this->extendsMap = $saveExtendsMap;
return $extended;
}
//protected static $libSelectorNest = ['selector...'];
protected function libSelectorNest($args)
{
if (count($args) < 1) {
$this->throwError("selector-nest() needs at least 1
argument");
}
$selectorsMap = array_map([$this, 'getSelectorArg'],
$args);
$envs = [];
foreach ($selectorsMap as $selectors) {
$env = new Environment();
$env->selectors = $selectors;
$envs[] = $env;
}
$envs = array_reverse($envs);
$env = $this->extractEnv($envs);
$outputSelectors = $this->multiplySelectors($env);
return $this->formatOutputSelector($outputSelectors);
}
protected static $libSelectorParse = ['selectors'];
protected function libSelectorParse($args)
{
$selectors = reset($args);
$selectors = $this->getSelectorArg($selectors);
return $this->formatOutputSelector($selectors);
}
protected static $libSelectorUnify = ['selectors1',
'selectors2'];
protected function libSelectorUnify($args)
{
list($selectors1, $selectors2) = $args;
$selectors1 = $this->getSelectorArg($selectors1);
$selectors2 = $this->getSelectorArg($selectors2);
if (! $selectors1 || ! $selectors2) {
$this->throwError("selector-unify() invalid
arguments");
}
// only consider the first compound of each
$compound1 = reset($selectors1);
$compound2 = reset($selectors2);
// unify them and that's it
$unified = $this->unifyCompoundSelectors($compound1,
$compound2);
return $this->formatOutputSelector($unified);
}
/**
* The selector-unify magic as its best
* (at least works as expected on test cases)
*
* @param array $compound1
* @param array $compound2
* @return array|mixed
*/
protected function unifyCompoundSelectors($compound1, $compound2)
{
if (! count($compound1)) {
return $compound2;
}
if (! count($compound2)) {
return $compound1;
}
// check that last part are compatible
$lastPart1 = array_pop($compound1);
$lastPart2 = array_pop($compound2);
$last = $this->mergeParts($lastPart1, $lastPart2);
if (! $last) {
return [[]];
}
$unifiedCompound = [$last];
$unifiedSelectors = [$unifiedCompound];
// do the rest
while (count($compound1) || count($compound2)) {
$part1 = end($compound1);
$part2 = end($compound2);
if ($part1 && ($match2 =
$this->matchPartInCompound($part1, $compound2))) {
list($compound2, $part2, $after2) = $match2;
if ($after2) {
$unifiedSelectors =
$this->prependSelectors($unifiedSelectors, $after2);
}
$c = $this->mergeParts($part1, $part2);
$unifiedSelectors =
$this->prependSelectors($unifiedSelectors, [$c]);
$part1 = $part2 = null;
array_pop($compound1);
}
if ($part2 && ($match1 =
$this->matchPartInCompound($part2, $compound1))) {
list($compound1, $part1, $after1) = $match1;
if ($after1) {
$unifiedSelectors =
$this->prependSelectors($unifiedSelectors, $after1);
}
$c = $this->mergeParts($part2, $part1);
$unifiedSelectors =
$this->prependSelectors($unifiedSelectors, [$c]);
$part1 = $part2 = null;
array_pop($compound2);
}
$new = [];
if ($part1 && $part2) {
array_pop($compound1);
array_pop($compound2);
$s = $this->prependSelectors($unifiedSelectors,
[$part2]);
$new = array_merge($new, $this->prependSelectors($s,
[$part1]));
$s = $this->prependSelectors($unifiedSelectors,
[$part1]);
$new = array_merge($new, $this->prependSelectors($s,
[$part2]));
} elseif ($part1) {
array_pop($compound1);
$new = array_merge($new,
$this->prependSelectors($unifiedSelectors, [$part1]));
} elseif ($part2) {
array_pop($compound2);
$new = array_merge($new,
$this->prependSelectors($unifiedSelectors, [$part2]));
}
if ($new) {
$unifiedSelectors = $new;
}
}
return $unifiedSelectors;
}
/**
* Prepend each selector from $selectors with $parts
*
* @param array $selectors
* @param array $parts
*
* @return array
*/
protected function prependSelectors($selectors, $parts)
{
$new = [];
foreach ($selectors as $compoundSelector) {
array_unshift($compoundSelector, $parts);
$new[] = $compoundSelector;
}
return $new;
}
/**
* Try to find a matching part in a compound:
* - with same html tag name
* - with some class or id or something in common
*
* @param array $part
* @param array $compound
*
* @return array|boolean
*/
protected function matchPartInCompound($part, $compound)
{
$partTag = $this->findTagName($part);
$before = $compound;
$after = [];
// try to find a match by tag name first
while (count($before)) {
$p = array_pop($before);
if ($partTag && $partTag !== '*' &&
$partTag == $this->findTagName($p)) {
return [$before, $p, $after];
}
$after[] = $p;
}
// try again matching a non empty intersection and a compatible
tagname
$before = $compound;
$after = [];
while (count($before)) {
$p = array_pop($before);
if ($this->checkCompatibleTags($partTag,
$this->findTagName($p))) {
if (count(array_intersect($part, $p))) {
return [$before, $p, $after];
}
}
$after[] = $p;
}
return false;
}
/**
* Merge two part list taking care that
* - the html tag is coming first - if any
* - the :something are coming last
*
* @param array $parts1
* @param array $parts2
*
* @return array
*/
protected function mergeParts($parts1, $parts2)
{
$tag1 = $this->findTagName($parts1);
$tag2 = $this->findTagName($parts2);
$tag = $this->checkCompatibleTags($tag1, $tag2);
// not compatible tags
if ($tag === false) {
return [];
}
if ($tag) {
if ($tag1) {
$parts1 = array_diff($parts1, [$tag1]);
}
if ($tag2) {
$parts2 = array_diff($parts2, [$tag2]);
}
}
$mergedParts = array_merge($parts1, $parts2);
$mergedOrderedParts = [];
foreach ($mergedParts as $part) {
if (strpos($part, ':') === 0) {
$mergedOrderedParts[] = $part;
}
}
$mergedParts = array_diff($mergedParts, $mergedOrderedParts);
$mergedParts = array_merge($mergedParts, $mergedOrderedParts);
if ($tag) {
array_unshift($mergedParts, $tag);
}
return $mergedParts;
}
/**
* Check the compatibility between two tag names:
* if both are defined they should be identical or one has to be
'*'
*
* @param string $tag1
* @param string $tag2
*
* @return array|boolean
*/
protected function checkCompatibleTags($tag1, $tag2)
{
$tags = [$tag1, $tag2];
$tags = array_unique($tags);
$tags = array_filter($tags);
if (count($tags)>1) {
$tags = array_diff($tags, ['*']);
}
// not compatible nodes
if (count($tags)>1) {
return false;
}
return $tags;
}
/**
* Find the html tag name in a selector parts list
*
* @param array $parts
*
* @return mixed|string
*/
protected function findTagName($parts)
{
foreach ($parts as $part) {
if (! preg_match('/^[\[.:#%_-]/', $part)) {
return $part;
}
}
return '';
}
protected static $libSimpleSelectors = ['selector'];
protected function libSimpleSelectors($args)
{
$selector = reset($args);
$selector = $this->getSelectorArg($selector);
// remove selectors list layer, keeping the first one
$selector = reset($selector);
// remove parts list layer, keeping the first part
$part = reset($selector);
$listParts = [];
foreach ($part as $p) {
$listParts[] = [Type::T_STRING, '', [$p]];
}
return [Type::T_LIST, ',', $listParts];
}
}
PK#d�[�/�NN+scssphp/src/Exception/CompilerException.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Exception;
/**
* Compiler exception
*
* @author Oleksandr Savchenko <traveltino@gmail.com>
*/
class CompilerException extends \Exception
{
}
PK#d�[� �iJJ)scssphp/src/Exception/ParserException.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Exception;
/**
* Parser Exception
*
* @author Oleksandr Savchenko <traveltino@gmail.com>
*/
class ParserException extends \Exception
{
}
PK#d�[�
vAA(scssphp/src/Exception/RangeException.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Exception;
/**
* Range exception
*
* @author Anthon Pang <anthon.pang@gmail.com>
*/
class RangeException extends \Exception
{
}
PK#d�[�� CC)scssphp/src/Exception/ServerException.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Exception;
/**
* Server Exception
*
* @author Anthon Pang <anthon.pang@gmail.com>
*/
class ServerException extends \Exception
{
}
PK#d�[�&��!scssphp/src/Formatter/Compact.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Formatter;
use Leafo\ScssPhp\Formatter;
/**
* Compact formatter
*
* @author Leaf Corcoran <leafot@gmail.com>
*/
class Compact extends Formatter
{
/**
* {@inheritdoc}
*/
public function __construct()
{
$this->indentLevel = 0;
$this->indentChar = '';
$this->break = '';
$this->open = ' {';
$this->close = "}\n\n";
$this->tagSeparator = ',';
$this->assignSeparator = ':';
$this->keepSemicolons = true;
}
/**
* {@inheritdoc}
*/
public function indentStr()
{
return ' ';
}
}
PK#d�[�BtwFF$scssphp/src/Formatter/Compressed.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Formatter;
use Leafo\ScssPhp\Formatter;
use Leafo\ScssPhp\Formatter\OutputBlock;
/**
* Compressed formatter
*
* @author Leaf Corcoran <leafot@gmail.com>
*/
class Compressed extends Formatter
{
/**
* {@inheritdoc}
*/
public function __construct()
{
$this->indentLevel = 0;
$this->indentChar = ' ';
$this->break = '';
$this->open = '{';
$this->close = '}';
$this->tagSeparator = ',';
$this->assignSeparator = ':';
$this->keepSemicolons = false;
}
/**
* {@inheritdoc}
*/
public function blockLines(OutputBlock $block)
{
$inner = $this->indentStr();
$glue = $this->break . $inner;
foreach ($block->lines as $index => $line) {
if (substr($line, 0, 2) === '/*' &&
substr($line, 2, 1) !== '!') {
unset($block->lines[$index]);
} elseif (substr($line, 0, 3) === '/*!') {
$block->lines[$index] = '/*' . substr($line,
3);
}
}
$this->write($inner . implode($glue, $block->lines));
if (! empty($block->children)) {
$this->write($this->break);
}
}
/**
* Output block selectors
*
* @param \Leafo\ScssPhp\Formatter\OutputBlock $block
*/
protected function blockSelectors(OutputBlock $block)
{
$inner = $this->indentStr();
$this->write(
$inner
. implode(
$this->tagSeparator,
str_replace([' > ', ' + ', ' ~
'], ['>', '+', '~'],
$block->selectors)
)
. $this->open . $this->break
);
}
}
PK#d�[�?�!��"scssphp/src/Formatter/Crunched.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Formatter;
use Leafo\ScssPhp\Formatter;
use Leafo\ScssPhp\Formatter\OutputBlock;
/**
* Crunched formatter
*
* @author Anthon Pang <anthon.pang@gmail.com>
*/
class Crunched extends Formatter
{
/**
* {@inheritdoc}
*/
public function __construct()
{
$this->indentLevel = 0;
$this->indentChar = ' ';
$this->break = '';
$this->open = '{';
$this->close = '}';
$this->tagSeparator = ',';
$this->assignSeparator = ':';
$this->keepSemicolons = false;
}
/**
* {@inheritdoc}
*/
public function blockLines(OutputBlock $block)
{
$inner = $this->indentStr();
$glue = $this->break . $inner;
foreach ($block->lines as $index => $line) {
if (substr($line, 0, 2) === '/*') {
unset($block->lines[$index]);
}
}
$this->write($inner . implode($glue, $block->lines));
if (! empty($block->children)) {
$this->write($this->break);
}
}
/**
* Output block selectors
*
* @param \Leafo\ScssPhp\Formatter\OutputBlock $block
*/
protected function blockSelectors(OutputBlock $block)
{
$inner = $this->indentStr();
$this->write(
$inner
. implode(
$this->tagSeparator,
str_replace([' > ', ' + ', ' ~
'], ['>', '+', '~'],
$block->selectors)
)
. $this->open . $this->break
);
}
}
PK#d�[�GFH� � scssphp/src/Formatter/Debug.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Formatter;
use Leafo\ScssPhp\Formatter;
use Leafo\ScssPhp\Formatter\OutputBlock;
/**
* Debug formatter
*
* @author Anthon Pang <anthon.pang@gmail.com>
*/
class Debug extends Formatter
{
/**
* {@inheritdoc}
*/
public function __construct()
{
$this->indentLevel = 0;
$this->indentChar = '';
$this->break = "\n";
$this->open = ' {';
$this->close = ' }';
$this->tagSeparator = ', ';
$this->assignSeparator = ': ';
$this->keepSemicolons = true;
}
/**
* {@inheritdoc}
*/
protected function indentStr()
{
return str_repeat(' ', $this->indentLevel);
}
/**
* {@inheritdoc}
*/
protected function blockLines(OutputBlock $block)
{
$indent = $this->indentStr();
if (empty($block->lines)) {
$this->write("{$indent}block->lines: []\n");
return;
}
foreach ($block->lines as $index => $line) {
$this->write("{$indent}block->lines[{$index}]:
$line\n");
}
}
/**
* {@inheritdoc}
*/
protected function blockSelectors(OutputBlock $block)
{
$indent = $this->indentStr();
if (empty($block->selectors)) {
$this->write("{$indent}block->selectors:
[]\n");
return;
}
foreach ($block->selectors as $index => $selector) {
$this->write("{$indent}block->selectors[{$index}]:
$selector\n");
}
}
/**
* {@inheritdoc}
*/
protected function blockChildren(OutputBlock $block)
{
$indent = $this->indentStr();
if (empty($block->children)) {
$this->write("{$indent}block->children: []\n");
return;
}
$this->indentLevel++;
foreach ($block->children as $i => $child) {
$this->block($child);
}
$this->indentLevel--;
}
/**
* {@inheritdoc}
*/
protected function block(OutputBlock $block)
{
$indent = $this->indentStr();
$this->write("{$indent}block->type:
{$block->type}\n" .
"{$indent}block->depth: {$block->depth}\n");
$this->currentBlock = $block;
$this->blockSelectors($block);
$this->blockLines($block);
$this->blockChildren($block);
}
}
PK#d�[�:�~��"scssphp/src/Formatter/Expanded.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Formatter;
use Leafo\ScssPhp\Formatter;
use Leafo\ScssPhp\Formatter\OutputBlock;
/**
* Expanded formatter
*
* @author Leaf Corcoran <leafot@gmail.com>
*/
class Expanded extends Formatter
{
/**
* {@inheritdoc}
*/
public function __construct()
{
$this->indentLevel = 0;
$this->indentChar = ' ';
$this->break = "\n";
$this->open = ' {';
$this->close = '}';
$this->tagSeparator = ', ';
$this->assignSeparator = ': ';
$this->keepSemicolons = true;
}
/**
* {@inheritdoc}
*/
protected function indentStr()
{
return str_repeat($this->indentChar, $this->indentLevel);
}
/**
* {@inheritdoc}
*/
protected function blockLines(OutputBlock $block)
{
$inner = $this->indentStr();
$glue = $this->break . $inner;
foreach ($block->lines as $index => $line) {
if (substr($line, 0, 2) === '/*') {
$block->lines[$index] =
preg_replace('/(\r|\n)+/', $glue, $line);
}
}
$this->write($inner . implode($glue, $block->lines));
if (empty($block->selectors) || ! empty($block->children)) {
$this->write($this->break);
}
}
}
PK#d�[�v�mjj
scssphp/src/Formatter/Nested.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Formatter;
use Leafo\ScssPhp\Formatter;
use Leafo\ScssPhp\Formatter\OutputBlock;
/**
* Nested formatter
*
* @author Leaf Corcoran <leafot@gmail.com>
*/
class Nested extends Formatter
{
/**
* @var integer
*/
private $depth;
/**
* {@inheritdoc}
*/
public function __construct()
{
$this->indentLevel = 0;
$this->indentChar = ' ';
$this->break = "\n";
$this->open = ' {';
$this->close = ' }';
$this->tagSeparator = ', ';
$this->assignSeparator = ': ';
$this->keepSemicolons = true;
}
/**
* {@inheritdoc}
*/
protected function indentStr()
{
$n = $this->depth - 1;
return str_repeat($this->indentChar, max($this->indentLevel +
$n, 0));
}
/**
* {@inheritdoc}
*/
protected function blockLines(OutputBlock $block)
{
$inner = $this->indentStr();
$glue = $this->break . $inner;
foreach ($block->lines as $index => $line) {
if (substr($line, 0, 2) === '/*') {
$block->lines[$index] =
preg_replace('/(\r|\n)+/', $glue, $line);
}
}
$this->write($inner . implode($glue, $block->lines));
if (! empty($block->children)) {
$this->write($this->break);
}
}
/**
* {@inheritdoc}
*/
protected function blockSelectors(OutputBlock $block)
{
$inner = $this->indentStr();
$this->write($inner
. implode($this->tagSeparator, $block->selectors)
. $this->open . $this->break);
}
/**
* {@inheritdoc}
*/
protected function blockChildren(OutputBlock $block)
{
foreach ($block->children as $i => $child) {
$this->block($child);
if ($i < count($block->children) - 1) {
$this->write($this->break);
if (isset($block->children[$i + 1])) {
$next = $block->children[$i + 1];
if ($next->depth === max($block->depth, 1)
&& $child->depth >= $next->depth) {
$this->write($this->break);
}
}
}
}
}
/**
* {@inheritdoc}
*/
protected function block(OutputBlock $block)
{
if ($block->type === 'root') {
$this->adjustAllChildren($block);
}
if (empty($block->lines) && empty($block->children))
{
return;
}
$this->currentBlock = $block;
$this->depth = $block->depth;
if (! empty($block->selectors)) {
$this->blockSelectors($block);
$this->indentLevel++;
}
if (! empty($block->lines)) {
$this->blockLines($block);
}
if (! empty($block->children)) {
$this->blockChildren($block);
}
if (! empty($block->selectors)) {
$this->indentLevel--;
$this->write($this->close);
}
if ($block->type === 'root') {
$this->write($this->break);
}
}
/**
* Adjust the depths of all children, depth first
*
* @param \Leafo\ScssPhp\Formatter\OutputBlock $block
*/
private function adjustAllChildren(OutputBlock $block)
{
// flatten empty nested blocks
$children = [];
foreach ($block->children as $i => $child) {
if (empty($child->lines) &&
empty($child->children)) {
if (isset($block->children[$i + 1])) {
$block->children[$i + 1]->depth =
$child->depth;
}
continue;
}
$children[] = $child;
}
$count = count($children);
for ($i = 0; $i < $count; $i++) {
$depth = $children[$i]->depth;
$j = $i + 1;
if (isset($children[$j]) && $depth <
$children[$j]->depth) {
$childDepth = $children[$j]->depth;
for (; $j < $count; $j++) {
if ($depth < $children[$j]->depth &&
$childDepth >= $children[$j]->depth) {
$children[$j]->depth = $depth + 1;
}
}
}
}
$block->children = $children;
// make relative to parent
foreach ($block->children as $child) {
$this->adjustAllChildren($child);
$child->depth = $child->depth - $block->depth;
}
}
}
PK#d�[i�LL%scssphp/src/Formatter/OutputBlock.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Formatter;
/**
* Output block
*
* @author Anthon Pang <anthon.pang@gmail.com>
*/
class OutputBlock
{
/**
* @var string
*/
public $type;
/**
* @var integer
*/
public $depth;
/**
* @var array
*/
public $selectors;
/**
* @var array
*/
public $lines;
/**
* @var array
*/
public $children;
/**
* @var \Leafo\ScssPhp\Formatter\OutputBlock
*/
public $parent;
/**
* @var string
*/
public $sourceName;
/**
* @var integer
*/
public $sourceLine;
/**
* @var integer
*/
public $sourceColumn;
}
PK#d�[� T�jjscssphp/src/Formatter.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp;
use Leafo\ScssPhp\Formatter\OutputBlock;
use Leafo\ScssPhp\SourceMap\SourceMapGenerator;
/**
* Base formatter
*
* @author Leaf Corcoran <leafot@gmail.com>
*/
abstract class Formatter
{
/**
* @var integer
*/
public $indentLevel;
/**
* @var string
*/
public $indentChar;
/**
* @var string
*/
public $break;
/**
* @var string
*/
public $open;
/**
* @var string
*/
public $close;
/**
* @var string
*/
public $tagSeparator;
/**
* @var string
*/
public $assignSeparator;
/**
* @var boolean
*/
public $keepSemicolons;
/**
* @var \Leafo\ScssPhp\Formatter\OutputBlock
*/
protected $currentBlock;
/**
* @var integer
*/
protected $currentLine;
/**
* @var integer
*/
protected $currentColumn;
/**
* @var \Leafo\ScssPhp\SourceMap\SourceMapGenerator
*/
protected $sourceMapGenerator;
/**
* Initialize formatter
*
* @api
*/
abstract public function __construct();
/**
* Return indentation (whitespace)
*
* @return string
*/
protected function indentStr()
{
return '';
}
/**
* Return property assignment
*
* @api
*
* @param string $name
* @param mixed $value
*
* @return string
*/
public function property($name, $value)
{
return rtrim($name) . $this->assignSeparator . $value .
';';
}
/**
* Strip semi-colon appended by property(); it's a separator, not
a terminator
*
* @api
*
* @param array $lines
*/
public function stripSemicolon(&$lines)
{
if ($this->keepSemicolons) {
return;
}
if (($count = count($lines))
&& substr($lines[$count - 1], -1) === ';'
) {
$lines[$count - 1] = substr($lines[$count - 1], 0, -1);
}
}
/**
* Output lines inside a block
*
* @param \Leafo\ScssPhp\Formatter\OutputBlock $block
*/
protected function blockLines(OutputBlock $block)
{
$inner = $this->indentStr();
$glue = $this->break . $inner;
$this->write($inner . implode($glue, $block->lines));
if (! empty($block->children)) {
$this->write($this->break);
}
}
/**
* Output block selectors
*
* @param \Leafo\ScssPhp\Formatter\OutputBlock $block
*/
protected function blockSelectors(OutputBlock $block)
{
$inner = $this->indentStr();
$this->write($inner
. implode($this->tagSeparator, $block->selectors)
. $this->open . $this->break);
}
/**
* Output block children
*
* @param \Leafo\ScssPhp\Formatter\OutputBlock $block
*/
protected function blockChildren(OutputBlock $block)
{
foreach ($block->children as $child) {
$this->block($child);
}
}
/**
* Output non-empty block
*
* @param \Leafo\ScssPhp\Formatter\OutputBlock $block
*/
protected function block(OutputBlock $block)
{
if (empty($block->lines) && empty($block->children))
{
return;
}
$this->currentBlock = $block;
$pre = $this->indentStr();
if (! empty($block->selectors)) {
$this->blockSelectors($block);
$this->indentLevel++;
}
if (! empty($block->lines)) {
$this->blockLines($block);
}
if (! empty($block->children)) {
$this->blockChildren($block);
}
if (! empty($block->selectors)) {
$this->indentLevel--;
if (empty($block->children)) {
$this->write($this->break);
}
$this->write($pre . $this->close . $this->break);
}
}
/**
* Entry point to formatting a block
*
* @api
*
* @param \Leafo\ScssPhp\Formatter\OutputBlock $block
An abstract syntax tree
* @param \Leafo\ScssPhp\SourceMap\SourceMapGenerator|null
$sourceMapGenerator Optional source map generator
*
* @return string
*/
public function format(OutputBlock $block, SourceMapGenerator
$sourceMapGenerator = null)
{
$this->sourceMapGenerator = null;
if ($sourceMapGenerator) {
$this->currentLine = 1;
$this->currentColumn = 0;
$this->sourceMapGenerator = $sourceMapGenerator;
}
ob_start();
$this->block($block);
$out = ob_get_clean();
return $out;
}
/**
* @param string $str
*/
protected function write($str)
{
if ($this->sourceMapGenerator) {
$this->sourceMapGenerator->addMapping(
$this->currentLine,
$this->currentColumn,
$this->currentBlock->sourceLine,
//columns from parser are off by one
$this->currentBlock->sourceColumn > 0 ?
$this->currentBlock->sourceColumn - 1 : 0,
$this->currentBlock->sourceName
);
$lines = explode("\n", $str);
$lineCount = count($lines);
$this->currentLine += $lineCount-1;
$lastLine = array_pop($lines);
$this->currentColumn = ($lineCount === 1 ?
$this->currentColumn : 0) + strlen($lastLine);
}
echo $str;
}
}
PK#d�[�a�d d scssphp/src/Node/Number.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Node;
use Leafo\ScssPhp\Compiler;
use Leafo\ScssPhp\Node;
use Leafo\ScssPhp\Type;
/**
* Dimension + optional units
*
* {@internal
* This is a work-in-progress.
*
* The \ArrayAccess interface is temporary until the migration is
complete.
* }}
*
* @author Anthon Pang <anthon.pang@gmail.com>
*/
class Number extends Node implements \ArrayAccess
{
/**
* @var integer
*/
static public $precision = 10;
/**
* @see http://www.w3.org/TR/2012/WD-css3-values-20120308/
*
* @var array
*/
static protected $unitTable = [
'in' => [
'in' => 1,
'pc' => 6,
'pt' => 72,
'px' => 96,
'cm' => 2.54,
'mm' => 25.4,
'q' => 101.6,
],
'turn' => [
'deg' => 360,
'grad' => 400,
'rad' => 6.28318530717958647692528676, // 2 *
M_PI
'turn' => 1,
],
's' => [
's' => 1,
'ms' => 1000,
],
'Hz' => [
'Hz' => 1,
'kHz' => 0.001,
],
'dpi' => [
'dpi' => 1,
'dpcm' => 2.54,
'dppx' => 96,
],
];
/**
* @var integer|float
*/
public $dimension;
/**
* @var array
*/
public $units;
/**
* Initialize number
*
* @param mixed $dimension
* @param mixed $initialUnit
*/
public function __construct($dimension, $initialUnit)
{
$this->type = Type::T_NUMBER;
$this->dimension = $dimension;
$this->units = is_array($initialUnit)
? $initialUnit
: ($initialUnit ? [$initialUnit => 1]
: []);
}
/**
* Coerce number to target units
*
* @param array $units
*
* @return \Leafo\ScssPhp\Node\Number
*/
public function coerce($units)
{
if ($this->unitless()) {
return new Number($this->dimension, $units);
}
$dimension = $this->dimension;
foreach (static::$unitTable['in'] as $unit => $conv) {
$from = isset($this->units[$unit]) ?
$this->units[$unit] : 0;
$to = isset($units[$unit]) ? $units[$unit] : 0;
$factor = pow($conv, $from - $to);
$dimension /= $factor;
}
return new Number($dimension, $units);
}
/**
* Normalize number
*
* @return \Leafo\ScssPhp\Node\Number
*/
public function normalize()
{
$dimension = $this->dimension;
$units = [];
$this->normalizeUnits($dimension, $units, 'in');
return new Number($dimension, $units);
}
/**
* {@inheritdoc}
*/
public function offsetExists($offset)
{
if ($offset === -3) {
return $this->sourceColumn !== null;
}
if ($offset === -2) {
return $this->sourceLine !== null;
}
if ($offset === -1
|| $offset === 0
|| $offset === 1
|| $offset === 2
) {
return true;
}
return false;
}
/**
* {@inheritdoc}
*/
public function offsetGet($offset)
{
switch ($offset) {
case -3:
return $this->sourceColumn;
case -2:
return $this->sourceLine;
case -1:
return $this->sourceIndex;
case 0:
return $this->type;
case 1:
return $this->dimension;
case 2:
return $this->units;
}
}
/**
* {@inheritdoc}
*/
public function offsetSet($offset, $value)
{
if ($offset === 1) {
$this->dimension = $value;
} elseif ($offset === 2) {
$this->units = $value;
} elseif ($offset == -1) {
$this->sourceIndex = $value;
} elseif ($offset == -2) {
$this->sourceLine = $value;
} elseif ($offset == -3) {
$this->sourceColumn = $value;
}
}
/**
* {@inheritdoc}
*/
public function offsetUnset($offset)
{
if ($offset === 1) {
$this->dimension = null;
} elseif ($offset === 2) {
$this->units = null;
} elseif ($offset === -1) {
$this->sourceIndex = null;
} elseif ($offset === -2) {
$this->sourceLine = null;
} elseif ($offset === -3) {
$this->sourceColumn = null;
}
}
/**
* Returns true if the number is unitless
*
* @return boolean
*/
public function unitless()
{
return ! array_sum($this->units);
}
/**
* Returns unit(s) as the product of numerator units divided by the
product of denominator units
*
* @return string
*/
public function unitStr()
{
$numerators = [];
$denominators = [];
foreach ($this->units as $unit => $unitSize) {
if ($unitSize > 0) {
$numerators = array_pad($numerators, count($numerators) +
$unitSize, $unit);
continue;
}
if ($unitSize < 0) {
$denominators = array_pad($denominators,
count($denominators) + $unitSize, $unit);
continue;
}
}
return implode('*', $numerators) . (count($denominators)
? '/' . implode('*', $denominators) : '');
}
/**
* Output number
*
* @param \Leafo\ScssPhp\Compiler $compiler
*
* @return string
*/
public function output(Compiler $compiler = null)
{
$dimension = round($this->dimension, static::$precision);
$units = array_filter($this->units, function ($unitSize) {
return $unitSize;
});
if (count($units) > 1 && array_sum($units) === 0) {
$dimension = $this->dimension;
$units = [];
$this->normalizeUnits($dimension, $units, 'in');
$dimension = round($dimension, static::$precision);
$units = array_filter($units, function ($unitSize) {
return $unitSize;
});
}
$unitSize = array_sum($units);
if ($compiler && ($unitSize > 1 || $unitSize < 0 ||
count($units) > 1)) {
$compiler->throwError((string) $dimension .
$this->unitStr() . " isn't a valid CSS value.");
}
reset($units);
$unit = key($units);
$dimension = number_format($dimension, static::$precision,
'.', '');
return (static::$precision ? rtrim(rtrim($dimension,
'0'), '.') : $dimension) . $unit;
}
/**
* {@inheritdoc}
*/
public function __toString()
{
return $this->output();
}
/**
* Normalize units
*
* @param integer|float $dimension
* @param array $units
* @param string $baseUnit
*/
private function normalizeUnits(&$dimension, &$units, $baseUnit
= 'in')
{
$dimension = $this->dimension;
$units = [];
foreach ($this->units as $unit => $exp) {
if (isset(static::$unitTable[$baseUnit][$unit])) {
$factor = pow(static::$unitTable[$baseUnit][$unit], $exp);
$unit = $baseUnit;
$dimension /= $factor;
}
$units[$unit] = $exp + (isset($units[$unit]) ? $units[$unit] :
0);
}
}
}
PK#d�[wY�� scssphp/src/Node.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp;
/**
* Base node
*
* @author Anthon Pang <anthon.pang@gmail.com>
*/
abstract class Node
{
/**
* @var string
*/
public $type;
/**
* @var integer
*/
public $sourceIndex;
/**
* @var integer
*/
public $sourceLine;
/**
* @var integer
*/
public $sourceColumn;
}
PK#d�[�R��scssphp/src/Parser.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp;
use Leafo\ScssPhp\Block;
use Leafo\ScssPhp\Cache;
use Leafo\ScssPhp\Compiler;
use Leafo\ScssPhp\Exception\ParserException;
use Leafo\ScssPhp\Node;
use Leafo\ScssPhp\Type;
/**
* Parser
*
* @author Leaf Corcoran <leafot@gmail.com>
*/
class Parser
{
const SOURCE_INDEX = -1;
const SOURCE_LINE = -2;
const SOURCE_COLUMN = -3;
/**
* @var array
*/
protected static $precedence = [
'=' => 0,
'or' => 1,
'and' => 2,
'==' => 3,
'!=' => 3,
'<=>' => 3,
'<=' => 4,
'>=' => 4,
'<' => 4,
'>' => 4,
'+' => 5,
'-' => 5,
'*' => 6,
'/' => 6,
'%' => 6,
];
protected static $commentPattern;
protected static $operatorPattern;
protected static $whitePattern;
protected $cache;
private $sourceName;
private $sourceIndex;
private $sourcePositions;
private $charset;
private $count;
private $env;
private $inParens;
private $eatWhiteDefault;
private $buffer;
private $utf8;
private $encoding;
private $patternModifiers;
private $commentsSeen;
/**
* Constructor
*
* @api
*
* @param string $sourceName
* @param integer $sourceIndex
* @param string $encoding
* @param \Leafo\ScssPhp\Cache $cache
*/
public function __construct($sourceName, $sourceIndex = 0, $encoding =
'utf-8', $cache = null)
{
$this->sourceName = $sourceName ?: '(stdin)';
$this->sourceIndex = $sourceIndex;
$this->charset = null;
$this->utf8 = ! $encoding || strtolower($encoding)
=== 'utf-8';
$this->patternModifiers = $this->utf8 ? 'Aisu' :
'Ais';
$this->commentsSeen = [];
if (empty(static::$operatorPattern)) {
static::$operatorPattern =
'([*\/%+-]|[!=]\=|\>\=?|\<\=\>|\<\=?|and|or)';
$commentSingle = '\/\/';
$commentMultiLeft = '\/\*';
$commentMultiRight = '\*\/';
static::$commentPattern = $commentMultiLeft . '.*?' .
$commentMultiRight;
static::$whitePattern = $this->utf8
? '/' . $commentSingle . '[^\n]*\s*|('
. static::$commentPattern . ')\s*|\s+/AisuS'
: '/' . $commentSingle . '[^\n]*\s*|('
. static::$commentPattern . ')\s*|\s+/AisS';
}
if ($cache) {
$this->cache = $cache;
}
}
/**
* Get source file name
*
* @api
*
* @return string
*/
public function getSourceName()
{
return $this->sourceName;
}
/**
* Throw parser error
*
* @api
*
* @param string $msg
*
* @throws \Leafo\ScssPhp\Exception\ParserException
*/
public function throwParseError($msg = 'parse error')
{
list($line, $column) =
$this->getSourcePosition($this->count);
$loc = empty($this->sourceName)
? "line: $line, column: $column"
: "$this->sourceName on line $line, at column
$column";
if ($this->peek("(.*?)(\n|$)", $m, $this->count)) {
throw new ParserException("$msg: failed at `$m[1]`
$loc");
}
throw new ParserException("$msg: $loc");
}
/**
* Parser buffer
*
* @api
*
* @param string $buffer
*
* @return \Leafo\ScssPhp\Block
*/
public function parse($buffer)
{
if ($this->cache) {
$cacheKey = $this->sourceName . ":" .
md5($buffer);
$parseOptions = [
'charset' => $this->charset,
'utf8' => $this->utf8,
];
$v = $this->cache->getCache("parse", $cacheKey,
$parseOptions);
if (! is_null($v)) {
return $v;
}
}
// strip BOM (byte order marker)
if (substr($buffer, 0, 3) === "\xef\xbb\xbf") {
$buffer = substr($buffer, 3);
}
$this->buffer = rtrim($buffer, "\x00..\x1f");
$this->count = 0;
$this->env = null;
$this->inParens = false;
$this->eatWhiteDefault = true;
$this->saveEncoding();
$this->extractLineNumbers($buffer);
$this->pushBlock(null); // root block
$this->whitespace();
$this->pushBlock(null);
$this->popBlock();
while ($this->parseChunk()) {
;
}
if ($this->count !== strlen($this->buffer)) {
$this->throwParseError();
}
if (! empty($this->env->parent)) {
$this->throwParseError('unclosed block');
}
if ($this->charset) {
array_unshift($this->env->children, $this->charset);
}
$this->restoreEncoding();
if ($this->cache) {
$this->cache->setCache("parse", $cacheKey,
$this->env, $parseOptions);
}
return $this->env;
}
/**
* Parse a value or value list
*
* @api
*
* @param string $buffer
* @param string $out
*
* @return boolean
*/
public function parseValue($buffer, &$out)
{
$this->count = 0;
$this->env = null;
$this->inParens = false;
$this->eatWhiteDefault = true;
$this->buffer = (string) $buffer;
$this->saveEncoding();
$list = $this->valueList($out);
$this->restoreEncoding();
return $list;
}
/**
* Parse a selector or selector list
*
* @api
*
* @param string $buffer
* @param string $out
*
* @return boolean
*/
public function parseSelector($buffer, &$out)
{
$this->count = 0;
$this->env = null;
$this->inParens = false;
$this->eatWhiteDefault = true;
$this->buffer = (string) $buffer;
$this->saveEncoding();
$selector = $this->selectors($out);
$this->restoreEncoding();
return $selector;
}
/**
* Parse a single chunk off the head of the buffer and append it to the
* current parse environment.
*
* Returns false when the buffer is empty, or when there is an error.
*
* This function is called repeatedly until the entire document is
* parsed.
*
* This parser is most similar to a recursive descent parser. Single
* functions represent discrete grammatical rules for the language, and
* they are able to capture the text that represents those rules.
*
* Consider the function Compiler::keyword(). (All parse functions are
* structured the same.)
*
* The function takes a single reference argument. When calling the
* function it will attempt to match a keyword on the head of the
buffer.
* If it is successful, it will place the keyword in the referenced
* argument, advance the position in the buffer, and return true. If it
* fails then it won't advance the buffer and it will return
false.
*
* All of these parse functions are powered by Compiler::match(), which
behaves
* the same way, but takes a literal regular expression. Sometimes it
is
* more convenient to use match instead of creating a new function.
*
* Because of the format of the functions, to parse an entire string of
* grammatical rules, you can chain them together using &&.
*
* But, if some of the rules in the chain succeed before one fails,
then
* the buffer position will be left at an invalid state. In order to
* avoid this, Compiler::seek() is used to remember and set buffer
positions.
*
* Before parsing a chain, use $s = $this->count to remember the
current
* position into $s. Then if a chain fails, use $this->seek($s) to
* go back where we started.
*
* @return boolean
*/
protected function parseChunk()
{
$s = $this->count;
// the directives
if (isset($this->buffer[$this->count]) &&
$this->buffer[$this->count] === '@') {
if ($this->literal('@at-root', 8) &&
($this->selectors($selector) || true) &&
($this->map($with) || true) &&
$this->matchChar('{')
) {
$atRoot = $this->pushSpecialBlock(Type::T_AT_ROOT, $s);
$atRoot->selector = $selector;
$atRoot->with = $with;
return true;
}
$this->seek($s);
if ($this->literal('@media', 6) &&
$this->mediaQueryList($mediaQueryList) &&
$this->matchChar('{')) {
$media = $this->pushSpecialBlock(Type::T_MEDIA, $s);
$media->queryList = $mediaQueryList[2];
return true;
}
$this->seek($s);
if ($this->literal('@mixin', 6) &&
$this->keyword($mixinName) &&
($this->argumentDef($args) || true) &&
$this->matchChar('{')
) {
$mixin = $this->pushSpecialBlock(Type::T_MIXIN, $s);
$mixin->name = $mixinName;
$mixin->args = $args;
return true;
}
$this->seek($s);
if ($this->literal('@include', 8) &&
$this->keyword($mixinName) &&
($this->matchChar('(') &&
($this->argValues($argValues) || true) &&
$this->matchChar(')') || true) &&
($this->end() ||
$this->matchChar('{') && $hasBlock
= true)
) {
$child = [Type::T_INCLUDE, $mixinName, isset($argValues) ?
$argValues : null, null];
if (! empty($hasBlock)) {
$include = $this->pushSpecialBlock(Type::T_INCLUDE,
$s);
$include->child = $child;
} else {
$this->append($child, $s);
}
return true;
}
$this->seek($s);
if ($this->literal('@scssphp-import-once', 20)
&&
$this->valueList($importPath) &&
$this->end()
) {
$this->append([Type::T_SCSSPHP_IMPORT_ONCE,
$importPath], $s);
return true;
}
$this->seek($s);
if ($this->literal('@import', 7) &&
$this->valueList($importPath) &&
$this->end()
) {
$this->append([Type::T_IMPORT, $importPath], $s);
return true;
}
$this->seek($s);
if ($this->literal('@import', 7) &&
$this->url($importPath) &&
$this->end()
) {
$this->append([Type::T_IMPORT, $importPath], $s);
return true;
}
$this->seek($s);
if ($this->literal('@extend', 7) &&
$this->selectors($selectors) &&
$this->end()
) {
// check for '!flag'
$optional = $this->stripOptionalFlag($selectors);
$this->append([Type::T_EXTEND, $selectors, $optional],
$s);
return true;
}
$this->seek($s);
if ($this->literal('@function', 9) &&
$this->keyword($fnName) &&
$this->argumentDef($args) &&
$this->matchChar('{')
) {
$func = $this->pushSpecialBlock(Type::T_FUNCTION, $s);
$func->name = $fnName;
$func->args = $args;
return true;
}
$this->seek($s);
if ($this->literal('@break', 6) &&
$this->end()) {
$this->append([Type::T_BREAK], $s);
return true;
}
$this->seek($s);
if ($this->literal('@continue', 9) &&
$this->end()) {
$this->append([Type::T_CONTINUE], $s);
return true;
}
$this->seek($s);
if ($this->literal('@return', 7) &&
($this->valueList($retVal) || true) && $this->end()) {
$this->append([Type::T_RETURN, isset($retVal) ? $retVal
: [Type::T_NULL]], $s);
return true;
}
$this->seek($s);
if ($this->literal('@each', 5) &&
$this->genericList($varNames, 'variable',
',', false) &&
$this->literal('in', 2) &&
$this->valueList($list) &&
$this->matchChar('{')
) {
$each = $this->pushSpecialBlock(Type::T_EACH, $s);
foreach ($varNames[2] as $varName) {
$each->vars[] = $varName[1];
}
$each->list = $list;
return true;
}
$this->seek($s);
if ($this->literal('@while', 6) &&
$this->expression($cond) &&
$this->matchChar('{')
) {
$while = $this->pushSpecialBlock(Type::T_WHILE, $s);
$while->cond = $cond;
return true;
}
$this->seek($s);
if ($this->literal('@for', 4) &&
$this->variable($varName) &&
$this->literal('from', 4) &&
$this->expression($start) &&
($this->literal('through', 7) ||
($forUntil = true &&
$this->literal('to', 2))) &&
$this->expression($end) &&
$this->matchChar('{')
) {
$for = $this->pushSpecialBlock(Type::T_FOR, $s);
$for->var = $varName[1];
$for->start = $start;
$for->end = $end;
$for->until = isset($forUntil);
return true;
}
$this->seek($s);
if ($this->literal('@if', 3) &&
$this->valueList($cond) && $this->matchChar('{')) {
$if = $this->pushSpecialBlock(Type::T_IF, $s);
$if->cond = $cond;
$if->cases = [];
return true;
}
$this->seek($s);
if ($this->literal('@debug', 6) &&
$this->valueList($value) &&
$this->end()
) {
$this->append([Type::T_DEBUG, $value], $s);
return true;
}
$this->seek($s);
if ($this->literal('@warn', 5) &&
$this->valueList($value) &&
$this->end()
) {
$this->append([Type::T_WARN, $value], $s);
return true;
}
$this->seek($s);
if ($this->literal('@error', 6) &&
$this->valueList($value) &&
$this->end()
) {
$this->append([Type::T_ERROR, $value], $s);
return true;
}
$this->seek($s);
if ($this->literal('@content', 8) &&
$this->end()) {
$this->append([Type::T_MIXIN_CONTENT], $s);
return true;
}
$this->seek($s);
$last = $this->last();
if (isset($last) && $last[0] === Type::T_IF) {
list(, $if) = $last;
if ($this->literal('@else', 5)) {
if ($this->matchChar('{')) {
$else = $this->pushSpecialBlock(Type::T_ELSE,
$s);
} elseif ($this->literal('if', 2)
&& $this->valueList($cond) &&
$this->matchChar('{')) {
$else = $this->pushSpecialBlock(Type::T_ELSEIF,
$s);
$else->cond = $cond;
}
if (isset($else)) {
$else->dontAppend = true;
$if->cases[] = $else;
return true;
}
}
$this->seek($s);
}
// only retain the first @charset directive encountered
if ($this->literal('@charset', 8) &&
$this->valueList($charset) &&
$this->end()
) {
if (! isset($this->charset)) {
$statement = [Type::T_CHARSET, $charset];
list($line, $column) = $this->getSourcePosition($s);
$statement[static::SOURCE_LINE] = $line;
$statement[static::SOURCE_COLUMN] = $column;
$statement[static::SOURCE_INDEX] =
$this->sourceIndex;
$this->charset = $statement;
}
return true;
}
$this->seek($s);
// doesn't match built in directive, do generic one
if ($this->matchChar('@', false) &&
$this->keyword($dirName) &&
($this->variable($dirValue) ||
$this->openString('{', $dirValue) || true) &&
$this->matchChar('{')
) {
if ($dirName === 'media') {
$directive = $this->pushSpecialBlock(Type::T_MEDIA,
$s);
} else {
$directive =
$this->pushSpecialBlock(Type::T_DIRECTIVE, $s);
$directive->name = $dirName;
}
if (isset($dirValue)) {
$directive->value = $dirValue;
}
return true;
}
$this->seek($s);
return false;
}
// property shortcut
// captures most properties before having to parse a selector
if ($this->keyword($name, false) &&
$this->literal(': ', 2) &&
$this->valueList($value) &&
$this->end()
) {
$name = [Type::T_STRING, '', [$name]];
$this->append([Type::T_ASSIGN, $name, $value], $s);
return true;
}
$this->seek($s);
// variable assigns
if ($this->variable($name) &&
$this->matchChar(':') &&
$this->valueList($value) &&
$this->end()
) {
// check for '!flag'
$assignmentFlags = $this->stripAssignmentFlags($value);
$this->append([Type::T_ASSIGN, $name, $value,
$assignmentFlags], $s);
return true;
}
$this->seek($s);
// misc
if ($this->literal('-->', 3)) {
return true;
}
// opening css block
if ($this->selectors($selectors) &&
$this->matchChar('{', false)) {
$this->pushBlock($selectors, $s);
if ($this->eatWhiteDefault) {
$this->whitespace();
$this->append(null); // collect comments at the begining
if needed
}
return true;
}
$this->seek($s);
// property assign, or nested assign
if ($this->propertyName($name) &&
$this->matchChar(':')) {
$foundSomething = false;
if ($this->valueList($value)) {
if (empty($this->env->parent)) {
$this->throwParseError('expected
"{"');
}
$this->append([Type::T_ASSIGN, $name, $value], $s);
$foundSomething = true;
}
if ($this->matchChar('{')) {
$propBlock =
$this->pushSpecialBlock(Type::T_NESTED_PROPERTY, $s);
$propBlock->prefix = $name;
$foundSomething = true;
} elseif ($foundSomething) {
$foundSomething = $this->end();
}
if ($foundSomething) {
return true;
}
}
$this->seek($s);
// closing a block
if ($this->matchChar('}')) {
$block = $this->popBlock();
if (isset($block->type) && $block->type ===
Type::T_INCLUDE) {
$include = $block->child;
unset($block->child);
$include[3] = $block;
$this->append($include, $s);
} elseif (empty($block->dontAppend)) {
$type = isset($block->type) ? $block->type :
Type::T_BLOCK;
$this->append([$type, $block], $s);
}
return true;
}
// extra stuff
if ($this->matchChar(';') ||
$this->literal('<!--', 4)
) {
return true;
}
return false;
}
/**
* Push block onto parse tree
*
* @param array $selectors
* @param integer $pos
*
* @return \Leafo\ScssPhp\Block
*/
protected function pushBlock($selectors, $pos = 0)
{
list($line, $column) = $this->getSourcePosition($pos);
$b = new Block;
$b->sourceName = $this->sourceName;
$b->sourceLine = $line;
$b->sourceColumn = $column;
$b->sourceIndex = $this->sourceIndex;
$b->selectors = $selectors;
$b->comments = [];
$b->parent = $this->env;
if (! $this->env) {
$b->children = [];
} elseif (empty($this->env->children)) {
$this->env->children = $this->env->comments;
$b->children = [];
$this->env->comments = [];
} else {
$b->children = $this->env->comments;
$this->env->comments = [];
}
$this->env = $b;
return $b;
}
/**
* Push special (named) block onto parse tree
*
* @param string $type
* @param integer $pos
*
* @return \Leafo\ScssPhp\Block
*/
protected function pushSpecialBlock($type, $pos)
{
$block = $this->pushBlock(null, $pos);
$block->type = $type;
return $block;
}
/**
* Pop scope and return last block
*
* @return \Leafo\ScssPhp\Block
*
* @throws \Exception
*/
protected function popBlock()
{
$block = $this->env;
if (empty($block->parent)) {
$this->throwParseError('unexpected }');
}
if ($block->type == Type::T_AT_ROOT) {
// keeps the parent in case of self selector &
$block->selfParent = $block->parent;
}
$this->env = $block->parent;
unset($block->parent);
$comments = $block->comments;
if ($comments) {
$this->env->comments = $comments;
unset($block->comments);
}
return $block;
}
/**
* Peek input stream
*
* @param string $regex
* @param array $out
* @param integer $from
*
* @return integer
*/
protected function peek($regex, &$out, $from = null)
{
if (! isset($from)) {
$from = $this->count;
}
$r = '/' . $regex . '/' .
$this->patternModifiers;
$result = preg_match($r, $this->buffer, $out, null, $from);
return $result;
}
/**
* Seek to position in input stream (or return current position in
input stream)
*
* @param integer $where
*/
protected function seek($where)
{
$this->count = $where;
}
/**
* Match string looking for either ending delim, escape, or string
interpolation
*
* {@internal This is a workaround for preg_match's 250K string
match limit. }}
*
* @param array $m Matches (passed by reference)
* @param string $delim Delimeter
*
* @return boolean True if match; false otherwise
*/
protected function matchString(&$m, $delim)
{
$token = null;
$end = strlen($this->buffer);
// look for either ending delim, escape, or string interpolation
foreach (['#{', '\\', $delim] as $lookahead) {
$pos = strpos($this->buffer, $lookahead, $this->count);
if ($pos !== false && $pos < $end) {
$end = $pos;
$token = $lookahead;
}
}
if (! isset($token)) {
return false;
}
$match = substr($this->buffer, $this->count, $end -
$this->count);
$m = [
$match . $token,
$match,
$token
];
$this->count = $end + strlen($token);
return true;
}
/**
* Try to match something on head of buffer
*
* @param string $regex
* @param array $out
* @param boolean $eatWhitespace
*
* @return boolean
*/
protected function match($regex, &$out, $eatWhitespace = null)
{
$r = '/' . $regex . '/' .
$this->patternModifiers;
if (! preg_match($r, $this->buffer, $out, null,
$this->count)) {
return false;
}
$this->count += strlen($out[0]);
if (! isset($eatWhitespace)) {
$eatWhitespace = $this->eatWhiteDefault;
}
if ($eatWhitespace) {
$this->whitespace();
}
return true;
}
/**
* Match a single string
*
* @param string $char
* @param boolean $eatWhitespace
*
* @return boolean
*/
protected function matchChar($char, $eatWhitespace = null)
{
if (! isset($this->buffer[$this->count]) ||
$this->buffer[$this->count] !== $char) {
return false;
}
$this->count++;
if (! isset($eatWhitespace)) {
$eatWhitespace = $this->eatWhiteDefault;
}
if ($eatWhitespace) {
$this->whitespace();
}
return true;
}
/**
* Match literal string
*
* @param string $what
* @param integer $len
* @param boolean $eatWhitespace
*
* @return boolean
*/
protected function literal($what, $len, $eatWhitespace = null)
{
if (strcasecmp(substr($this->buffer, $this->count, $len),
$what) !== 0) {
return false;
}
$this->count += $len;
if (! isset($eatWhitespace)) {
$eatWhitespace = $this->eatWhiteDefault;
}
if ($eatWhitespace) {
$this->whitespace();
}
return true;
}
/**
* Match some whitespace
*
* @return boolean
*/
protected function whitespace()
{
$gotWhite = false;
while (preg_match(static::$whitePattern, $this->buffer, $m,
null, $this->count)) {
if (isset($m[1]) &&
empty($this->commentsSeen[$this->count])) {
// comment that are kept in the output CSS
$comment = [];
$endCommentCount = $this->count + strlen($m[1]);
// find interpolations in comment
$p = strpos($this->buffer, '#{',
$this->count);
while ($p !== false && $p < $endCommentCount) {
$c = substr($this->buffer, $this->count, $p -
$this->count);
$comment[] = $c;
$this->count = $p;
$out = null;
if ($this->interpolation($out)) {
// keep right spaces in the following string part
if ($out[3]) {
while ($this->buffer[$this->count-1] !==
'}') {
$this->count--;
}
$out[3] = '';
}
$comment[] = $out;
} else {
$comment[] = substr($this->buffer,
$this->count, 2);
$this->count += 2;
}
$p = strpos($this->buffer, '#{',
$this->count);
}
// remaining part
$c = substr($this->buffer, $this->count,
$endCommentCount - $this->count);
if (! $comment) {
// single part static comment
$this->appendComment([Type::T_COMMENT, $c]);
} else {
$comment[] = $c;
$this->appendComment([Type::T_COMMENT,
[Type::T_STRING, '', $comment]]);
}
$this->commentsSeen[$this->count] = true;
$this->count = $endCommentCount;
} else {
// comment that are ignored and not kept in the output css
$this->count += strlen($m[0]);
}
$gotWhite = true;
}
return $gotWhite;
}
/**
* Append comment to current block
*
* @param array $comment
*/
protected function appendComment($comment)
{
if ($comment[0] === Type::T_COMMENT &&
is_string($comment[1])) {
$comment[1] = substr(preg_replace(['/^\s+/m',
'/^(.)/m'], ['', ' \1'], $comment[1]), 1);
}
$this->env->comments[] = $comment;
}
/**
* Append statement to current block
*
* @param array $statement
* @param integer $pos
*/
protected function append($statement, $pos = null)
{
if (! is_null($statement)) {
if ($pos !== null) {
list($line, $column) = $this->getSourcePosition($pos);
$statement[static::SOURCE_LINE] = $line;
$statement[static::SOURCE_COLUMN] = $column;
$statement[static::SOURCE_INDEX] = $this->sourceIndex;
}
$this->env->children[] = $statement;
}
$comments = $this->env->comments;
if ($comments) {
$this->env->children =
array_merge($this->env->children, $comments);
$this->env->comments = [];
}
}
/**
* Returns last child was appended
*
* @return array|null
*/
protected function last()
{
$i = count($this->env->children) - 1;
if (isset($this->env->children[$i])) {
return $this->env->children[$i];
}
}
/**
* Parse media query list
*
* @param array $out
*
* @return boolean
*/
protected function mediaQueryList(&$out)
{
return $this->genericList($out, 'mediaQuery',
',', false);
}
/**
* Parse media query
*
* @param array $out
*
* @return boolean
*/
protected function mediaQuery(&$out)
{
$expressions = null;
$parts = [];
if (($this->literal('only', 4) && ($only =
true) || $this->literal('not', 3) && ($not = true) ||
true) &&
$this->mixedKeyword($mediaType)
) {
$prop = [Type::T_MEDIA_TYPE];
if (isset($only)) {
$prop[] = [Type::T_KEYWORD, 'only'];
}
if (isset($not)) {
$prop[] = [Type::T_KEYWORD, 'not'];
}
$media = [Type::T_LIST, '', []];
foreach ((array) $mediaType as $type) {
if (is_array($type)) {
$media[2][] = $type;
} else {
$media[2][] = [Type::T_KEYWORD, $type];
}
}
$prop[] = $media;
$parts[] = $prop;
}
if (empty($parts) || $this->literal('and', 3)) {
$this->genericList($expressions,
'mediaExpression', 'and', false);
if (is_array($expressions)) {
$parts = array_merge($parts, $expressions[2]);
}
}
$out = $parts;
return true;
}
/**
* Parse media expression
*
* @param array $out
*
* @return boolean
*/
protected function mediaExpression(&$out)
{
$s = $this->count;
$value = null;
if ($this->matchChar('(') &&
$this->expression($feature) &&
($this->matchChar(':') &&
$this->expression($value) || true) &&
$this->matchChar(')')
) {
$out = [Type::T_MEDIA_EXPRESSION, $feature];
if ($value) {
$out[] = $value;
}
return true;
}
$this->seek($s);
return false;
}
/**
* Parse argument values
*
* @param array $out
*
* @return boolean
*/
protected function argValues(&$out)
{
if ($this->genericList($list, 'argValue',
',', false)) {
$out = $list[2];
return true;
}
return false;
}
/**
* Parse argument value
*
* @param array $out
*
* @return boolean
*/
protected function argValue(&$out)
{
$s = $this->count;
$keyword = null;
if (! $this->variable($keyword) || !
$this->matchChar(':')) {
$this->seek($s);
$keyword = null;
}
if ($this->genericList($value, 'expression')) {
$out = [$keyword, $value, false];
$s = $this->count;
if ($this->literal('...', 3)) {
$out[2] = true;
} else {
$this->seek($s);
}
return true;
}
return false;
}
/**
* Parse comma separated value list
*
* @param array $out
*
* @return boolean
*/
protected function valueList(&$out)
{
return $this->genericList($out, 'spaceList',
',');
}
/**
* Parse space separated value list
*
* @param array $out
*
* @return boolean
*/
protected function spaceList(&$out)
{
return $this->genericList($out, 'expression');
}
/**
* Parse generic list
*
* @param array $out
* @param callable $parseItem
* @param string $delim
* @param boolean $flatten
*
* @return boolean
*/
protected function genericList(&$out, $parseItem, $delim =
'', $flatten = true)
{
$s = $this->count;
$items = [];
$value = null;
while ($this->$parseItem($value)) {
$items[] = $value;
if ($delim) {
if (! $this->literal($delim, strlen($delim))) {
break;
}
}
}
if (! $items) {
$this->seek($s);
return false;
}
if ($flatten && count($items) === 1) {
$out = $items[0];
} else {
$out = [Type::T_LIST, $delim, $items];
}
return true;
}
/**
* Parse expression
*
* @param array $out
*
* @return boolean
*/
protected function expression(&$out)
{
$s = $this->count;
if ($this->matchChar('(')) {
if ($this->parenExpression($out, $s, ")")) {
return true;
}
$this->seek($s);
}
if ($this->matchChar('[')) {
if ($this->parenExpression($out, $s, "]",
[Type::T_LIST, Type::T_KEYWORD])) {
if ($out[0] !== Type::T_LIST && $out[0] !==
Type::T_MAP) {
$out = [Type::T_STRING, '', [ '[',
$out, ']' ]];
}
return true;
}
$this->seek($s);
}
if ($this->value($lhs)) {
$out = $this->expHelper($lhs, 0);
return true;
}
return false;
}
/**
* Parse expression specifically checking for lists in parenthesis or
brackets
*
* @param array $out
* @param integer $s
* @param string $closingParen
* @param array $allowedTypes
*
* @return boolean
*/
protected function parenExpression(&$out, $s, $closingParen =
")", $allowedTypes = [Type::T_LIST, Type::T_MAP])
{
if ($this->matchChar($closingParen)) {
$out = [Type::T_LIST, '', []];
return true;
}
if ($this->valueList($out) &&
$this->matchChar($closingParen) && in_array($out[0],
$allowedTypes)) {
return true;
}
$this->seek($s);
if (in_array(Type::T_MAP, $allowedTypes) &&
$this->map($out)) {
return true;
}
return false;
}
/**
* Parse left-hand side of subexpression
*
* @param array $lhs
* @param integer $minP
*
* @return array
*/
protected function expHelper($lhs, $minP)
{
$operators = static::$operatorPattern;
$ss = $this->count;
$whiteBefore = isset($this->buffer[$this->count - 1])
&&
ctype_space($this->buffer[$this->count - 1]);
while ($this->match($operators, $m, false) &&
static::$precedence[$m[1]] >= $minP) {
$whiteAfter = isset($this->buffer[$this->count])
&&
ctype_space($this->buffer[$this->count]);
$varAfter = isset($this->buffer[$this->count]) &&
$this->buffer[$this->count] === '$';
$this->whitespace();
$op = $m[1];
// don't turn negative numbers into expressions
if ($op === '-' && $whiteBefore && !
$whiteAfter && ! $varAfter) {
break;
}
if (! $this->value($rhs)) {
break;
}
// peek and see if rhs belongs to next operator
if ($this->peek($operators, $next) &&
static::$precedence[$next[1]] > static::$precedence[$op]) {
$rhs = $this->expHelper($rhs,
static::$precedence[$next[1]]);
}
$lhs = [Type::T_EXPRESSION, $op, $lhs, $rhs,
$this->inParens, $whiteBefore, $whiteAfter];
$ss = $this->count;
$whiteBefore = isset($this->buffer[$this->count - 1])
&&
ctype_space($this->buffer[$this->count - 1]);
}
$this->seek($ss);
return $lhs;
}
/**
* Parse value
*
* @param array $out
*
* @return boolean
*/
protected function value(&$out)
{
if (! isset($this->buffer[$this->count])) {
return false;
}
$s = $this->count;
$char = $this->buffer[$this->count];
if ($this->literal('url(', 4) &&
$this->match('data:([a-z]+)\/([a-z0-9.+-]+);base64,', $m,
false)) {
$len = strspn(
$this->buffer,
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwyxz0123456789+/=',
$this->count
);
$this->count += $len;
if ($this->matchChar(')')) {
$content = substr($this->buffer, $s, $this->count -
$s);
$out = [Type::T_KEYWORD, $content];
return true;
}
}
$this->seek($s);
if ($this->literal('url(', 4, false) &&
$this->match('\s*(\/\/\S+)\s*', $m)) {
$content = 'url(' . $m[1];
if ($this->matchChar(')')) {
$content .= ')';
$out = [Type::T_KEYWORD, $content];
return true;
}
}
$this->seek($s);
// not
if ($char === 'n' &&
$this->literal('not', 3, false)) {
if ($this->whitespace() && $this->value($inner))
{
$out = [Type::T_UNARY, 'not', $inner,
$this->inParens];
return true;
}
$this->seek($s);
if ($this->parenValue($inner)) {
$out = [Type::T_UNARY, 'not', $inner,
$this->inParens];
return true;
}
$this->seek($s);
}
// addition
if ($char === '+') {
$this->count++;
if ($this->value($inner)) {
$out = [Type::T_UNARY, '+', $inner,
$this->inParens];
return true;
}
$this->count--;
return false;
}
// negation
if ($char === '-') {
$this->count++;
if ($this->variable($inner) || $this->unit($inner) ||
$this->parenValue($inner)) {
$out = [Type::T_UNARY, '-', $inner,
$this->inParens];
return true;
}
$this->count--;
}
// paren
if ($char === '(' && $this->parenValue($out))
{
return true;
}
if ($char === '#') {
if ($this->interpolation($out) || $this->color($out)) {
return true;
}
}
if ($this->matchChar('&', true)) {
$out = [Type::T_SELF];
return true;
}
if ($char === '$' && $this->variable($out)) {
return true;
}
if ($char === 'p' && $this->progid($out)) {
return true;
}
if (($char === '"' || $char === "'")
&& $this->string($out)) {
return true;
}
if ($this->unit($out)) {
return true;
}
// unicode range with wildcards
if ($this->literal('U+', 2) &&
$this->match('([0-9A-F]+\?*)(-([0-9A-F]+))?', $m, false)) {
$out = [Type::T_KEYWORD, 'U+' . $m[0]];
return true;
}
if ($this->keyword($keyword, false)) {
if ($this->func($keyword, $out)) {
return true;
}
$this->whitespace();
if ($keyword === 'null') {
$out = [Type::T_NULL];
} else {
$out = [Type::T_KEYWORD, $keyword];
}
return true;
}
return false;
}
/**
* Parse parenthesized value
*
* @param array $out
*
* @return boolean
*/
protected function parenValue(&$out)
{
$s = $this->count;
$inParens = $this->inParens;
if ($this->matchChar('(')) {
if ($this->matchChar(')')) {
$out = [Type::T_LIST, '', []];
return true;
}
$this->inParens = true;
if ($this->expression($exp) &&
$this->matchChar(')')) {
$out = $exp;
$this->inParens = $inParens;
return true;
}
}
$this->inParens = $inParens;
$this->seek($s);
return false;
}
/**
* Parse "progid:"
*
* @param array $out
*
* @return boolean
*/
protected function progid(&$out)
{
$s = $this->count;
if ($this->literal('progid:', 7, false) &&
$this->openString('(', $fn) &&
$this->matchChar('(')
) {
$this->openString(')', $args, '(');
if ($this->matchChar(')')) {
$out = [Type::T_STRING, '', [
'progid:', $fn, '(', $args,
')'
]];
return true;
}
}
$this->seek($s);
return false;
}
/**
* Parse function call
*
* @param string $name
* @param array $func
*
* @return boolean
*/
protected function func($name, &$func)
{
$s = $this->count;
if ($this->matchChar('(')) {
if ($name === 'alpha' &&
$this->argumentList($args)) {
$func = [Type::T_FUNCTION, $name, [Type::T_STRING,
'', $args]];
return true;
}
if ($name !== 'expression' && !
preg_match('/^(-[a-z]+-)?calc$/', $name)) {
$ss = $this->count;
if ($this->argValues($args) &&
$this->matchChar(')')) {
$func = [Type::T_FUNCTION_CALL, $name, $args];
return true;
}
$this->seek($ss);
}
if (($this->openString(')', $str, '(')
|| true) &&
$this->matchChar(')')
) {
$args = [];
if (! empty($str)) {
$args[] = [null, [Type::T_STRING, '',
[$str]]];
}
$func = [Type::T_FUNCTION_CALL, $name, $args];
return true;
}
}
$this->seek($s);
return false;
}
/**
* Parse function call argument list
*
* @param array $out
*
* @return boolean
*/
protected function argumentList(&$out)
{
$s = $this->count;
$this->matchChar('(');
$args = [];
while ($this->keyword($var)) {
if ($this->matchChar('=') &&
$this->expression($exp)) {
$args[] = [Type::T_STRING, '', [$var .
'=']];
$arg = $exp;
} else {
break;
}
$args[] = $arg;
if (! $this->matchChar(',')) {
break;
}
$args[] = [Type::T_STRING, '', [', ']];
}
if (! $this->matchChar(')') || ! $args) {
$this->seek($s);
return false;
}
$out = $args;
return true;
}
/**
* Parse mixin/function definition argument list
*
* @param array $out
*
* @return boolean
*/
protected function argumentDef(&$out)
{
$s = $this->count;
$this->matchChar('(');
$args = [];
while ($this->variable($var)) {
$arg = [$var[1], null, false];
$ss = $this->count;
if ($this->matchChar(':') &&
$this->genericList($defaultVal, 'expression')) {
$arg[1] = $defaultVal;
} else {
$this->seek($ss);
}
$ss = $this->count;
if ($this->literal('...', 3)) {
$sss = $this->count;
if (! $this->matchChar(')')) {
$this->throwParseError('... has to be after the
final argument');
}
$arg[2] = true;
$this->seek($sss);
} else {
$this->seek($ss);
}
$args[] = $arg;
if (! $this->matchChar(',')) {
break;
}
}
if (! $this->matchChar(')')) {
$this->seek($s);
return false;
}
$out = $args;
return true;
}
/**
* Parse map
*
* @param array $out
*
* @return boolean
*/
protected function map(&$out)
{
$s = $this->count;
if (! $this->matchChar('(')) {
return false;
}
$keys = [];
$values = [];
while ($this->genericList($key, 'expression')
&& $this->matchChar(':') &&
$this->genericList($value, 'expression')
) {
$keys[] = $key;
$values[] = $value;
if (! $this->matchChar(',')) {
break;
}
}
if (! $keys || ! $this->matchChar(')')) {
$this->seek($s);
return false;
}
$out = [Type::T_MAP, $keys, $values];
return true;
}
/**
* Parse color
*
* @param array $out
*
* @return boolean
*/
protected function color(&$out)
{
$color = [Type::T_COLOR];
$s = $this->count;
if ($this->match('(#([0-9a-f]+))', $m)) {
$nofValues = strlen($m[2]);
$hasAlpha = $nofValues === 4 || $nofValues === 8;
$channels = $hasAlpha ? [4, 3, 2, 1] : [3, 2, 1];
switch ($nofValues) {
case 3:
case 4:
$num = hexdec($m[2]);
foreach ($channels as $i) {
$t = $num & 0xf;
$color[$i] = $t << 4 | $t;
$num >>= 4;
}
break;
case 6:
case 8:
$num = hexdec($m[2]);
foreach ($channels as $i) {
$color[$i] = $num & 0xff;
$num >>= 8;
}
break;
default:
$this->seek($s);
return false;
}
if ($hasAlpha) {
if ($color[4] === 255) {
$color[4] = 1; // fully opaque
} else {
$color[4] = round($color[4] / 255, 3);
}
}
$out = $color;
return true;
}
return false;
}
/**
* Parse number with unit
*
* @param array $unit
*
* @return boolean
*/
protected function unit(&$unit)
{
$s = $this->count;
if ($this->match('([0-9]*(\.)?[0-9]+)([%a-zA-Z]+)?',
$m, false)) {
if (strlen($this->buffer) === $this->count || !
ctype_digit($this->buffer[$this->count])) {
$this->whitespace();
$unit = new Node\Number($m[1], empty($m[3]) ? ''
: $m[3]);
return true;
}
$this->seek($s);
}
return false;
}
/**
* Parse string
*
* @param array $out
*
* @return boolean
*/
protected function string(&$out)
{
$s = $this->count;
if ($this->matchChar('"', false)) {
$delim = '"';
} elseif ($this->matchChar("'", false)) {
$delim = "'";
} else {
return false;
}
$content = [];
$oldWhite = $this->eatWhiteDefault;
$this->eatWhiteDefault = false;
$hasInterpolation = false;
while ($this->matchString($m, $delim)) {
if ($m[1] !== '') {
$content[] = $m[1];
}
if ($m[2] === '#{') {
$this->count -= strlen($m[2]);
if ($this->interpolation($inter, false)) {
$content[] = $inter;
$hasInterpolation = true;
} else {
$this->count += strlen($m[2]);
$content[] = '#{'; // ignore it
}
} elseif ($m[2] === '\\') {
if ($this->matchChar('"', false)) {
$content[] = $m[2] . '"';
} elseif ($this->matchChar("'", false)) {
$content[] = $m[2] . "'";
} elseif ($this->literal("\\", 1, false)) {
$content[] = $m[2] . "\\";
} elseif ($this->literal("\r\n", 2, false)
|| $this->matchChar("\r", false)
|| $this->matchChar("\n", false)
|| $this->matchChar("\f", false)) {
// this is a continuation escaping, to be ignored
} else {
$content[] = $m[2];
}
} else {
$this->count -= strlen($delim);
break; // delim
}
}
$this->eatWhiteDefault = $oldWhite;
if ($this->literal($delim, strlen($delim))) {
if ($hasInterpolation) {
$delim = '"';
foreach ($content as &$string) {
if ($string === "\\\\") {
$string = "\\";
} elseif ($string === "\\'") {
$string = "'";
} elseif ($string === '\\"') {
$string = '"';
}
}
}
$out = [Type::T_STRING, $delim, $content];
return true;
}
$this->seek($s);
return false;
}
/**
* Parse keyword or interpolation
*
* @param array $out
*
* @return boolean
*/
protected function mixedKeyword(&$out)
{
$parts = [];
$oldWhite = $this->eatWhiteDefault;
$this->eatWhiteDefault = false;
for (;;) {
if ($this->keyword($key)) {
$parts[] = $key;
continue;
}
if ($this->interpolation($inter)) {
$parts[] = $inter;
continue;
}
break;
}
$this->eatWhiteDefault = $oldWhite;
if (! $parts) {
return false;
}
if ($this->eatWhiteDefault) {
$this->whitespace();
}
$out = $parts;
return true;
}
/**
* Parse an unbounded string stopped by $end
*
* @param string $end
* @param array $out
* @param string $nestingOpen
*
* @return boolean
*/
protected function openString($end, &$out, $nestingOpen = null)
{
$oldWhite = $this->eatWhiteDefault;
$this->eatWhiteDefault = false;
$patt = '(.*?)([\'"]|#\{|' .
$this->pregQuote($end) . '|' . static::$commentPattern .
')';
$nestingLevel = 0;
$content = [];
while ($this->match($patt, $m, false)) {
if (isset($m[1]) && $m[1] !== '') {
$content[] = $m[1];
if ($nestingOpen) {
$nestingLevel += substr_count($m[1], $nestingOpen);
}
}
$tok = $m[2];
$this->count-= strlen($tok);
if ($tok === $end && ! $nestingLevel--) {
break;
}
if (($tok === "'" || $tok ===
'"') && $this->string($str)) {
$content[] = $str;
continue;
}
if ($tok === '#{' &&
$this->interpolation($inter)) {
$content[] = $inter;
continue;
}
$content[] = $tok;
$this->count+= strlen($tok);
}
$this->eatWhiteDefault = $oldWhite;
if (! $content) {
return false;
}
// trim the end
if (is_string(end($content))) {
$content[count($content) - 1] = rtrim(end($content));
}
$out = [Type::T_STRING, '', $content];
return true;
}
/**
* Parser interpolation
*
* @param array $out
* @param boolean $lookWhite save information about whitespace before
and after
*
* @return boolean
*/
protected function interpolation(&$out, $lookWhite = true)
{
$oldWhite = $this->eatWhiteDefault;
$this->eatWhiteDefault = true;
$s = $this->count;
if ($this->literal('#{', 2) &&
$this->valueList($value) && $this->matchChar('}',
false)) {
if ($value === [Type::T_SELF]) {
$out = $value;
} else {
if ($lookWhite) {
$left = preg_match('/\s/',
$this->buffer[$s - 1]) ? ' ' : '';
$right = preg_match('/\s/',
$this->buffer[$this->count]) ? ' ': '';
} else {
$left = $right = false;
}
$out = [Type::T_INTERPOLATE, $value, $left, $right];
}
$this->eatWhiteDefault = $oldWhite;
if ($this->eatWhiteDefault) {
$this->whitespace();
}
return true;
}
$this->seek($s);
$this->eatWhiteDefault = $oldWhite;
return false;
}
/**
* Parse property name (as an array of parts or a string)
*
* @param array $out
*
* @return boolean
*/
protected function propertyName(&$out)
{
$parts = [];
$oldWhite = $this->eatWhiteDefault;
$this->eatWhiteDefault = false;
for (;;) {
if ($this->interpolation($inter)) {
$parts[] = $inter;
continue;
}
if ($this->keyword($text)) {
$parts[] = $text;
continue;
}
if (! $parts && $this->match('[:.#]', $m,
false)) {
// css hacks
$parts[] = $m[0];
continue;
}
break;
}
$this->eatWhiteDefault = $oldWhite;
if (! $parts) {
return false;
}
// match comment hack
if (preg_match(
static::$whitePattern,
$this->buffer,
$m,
null,
$this->count
)) {
if (! empty($m[0])) {
$parts[] = $m[0];
$this->count += strlen($m[0]);
}
}
$this->whitespace(); // get any extra whitespace
$out = [Type::T_STRING, '', $parts];
return true;
}
/**
* Parse comma separated selector list
*
* @param array $out
*
* @return boolean
*/
protected function selectors(&$out, $subSelector = false)
{
$s = $this->count;
$selectors = [];
while ($this->selector($sel, $subSelector)) {
$selectors[] = $sel;
if (! $this->matchChar(',', true)) {
break;
}
while ($this->matchChar(',', true)) {
; // ignore extra
}
}
if (! $selectors) {
$this->seek($s);
return false;
}
$out = $selectors;
return true;
}
/**
* Parse whitespace separated selector list
*
* @param array $out
*
* @return boolean
*/
protected function selector(&$out, $subSelector = false)
{
$selector = [];
for (;;) {
if ($this->match('[>+~]+', $m, true)) {
$selector[] = [$m[0]];
continue;
}
if ($this->selectorSingle($part, $subSelector)) {
$selector[] = $part;
$this->match('\s+', $m);
continue;
}
if ($this->match('\/[^\/]+\/', $m, true)) {
$selector[] = [$m[0]];
continue;
}
break;
}
if (! $selector) {
return false;
}
$out = $selector;
return true;
}
/**
* Parse the parts that make up a selector
*
* {@internal
* div[yes=no]#something.hello.world:nth-child(-2n+1)%placeholder
* }}
*
* @param array $out
*
* @return boolean
*/
protected function selectorSingle(&$out, $subSelector = false)
{
$oldWhite = $this->eatWhiteDefault;
$this->eatWhiteDefault = false;
$parts = [];
if ($this->matchChar('*', false)) {
$parts[] = '*';
}
for (;;) {
if (! isset($this->buffer[$this->count])) {
break;
}
$s = $this->count;
$char = $this->buffer[$this->count];
// see if we can stop early
if ($char === '{' || $char === ',' || $char
=== ';' || $char === '}' || $char === '@') {
break;
}
// parsing a sub selector in () stop with the closing )
if ($subSelector && $char === ')') {
break;
}
//self
switch ($char) {
case '&':
$parts[] = Compiler::$selfSelector;
$this->count++;
continue 2;
case '.':
$parts[] = '.';
$this->count++;
continue 2;
case '|':
$parts[] = '|';
$this->count++;
continue 2;
}
if ($char === '\\' &&
$this->match('\\\\\S', $m)) {
$parts[] = $m[0];
continue;
}
if ($char === '%') {
$this->count++;
if ($this->placeholder($placeholder)) {
$parts[] = '%';
$parts[] = $placeholder;
continue;
}
break;
}
if ($char === '#') {
if ($this->interpolation($inter)) {
$parts[] = $inter;
continue;
}
$parts[] = '#';
$this->count++;
continue;
}
// a pseudo selector
if ($char === ':') {
if ($this->buffer[$this->count + 1] ===
':') {
$this->count += 2;
$part = '::';
} else {
$this->count++;
$part = ':';
}
if ($this->mixedKeyword($nameParts)) {
$parts[] = $part;
foreach ($nameParts as $sub) {
$parts[] = $sub;
}
$ss = $this->count;
if ($nameParts === ['not'] || $nameParts ===
['is'] ||
$nameParts === ['has'] || $nameParts ===
['where']
) {
if ($this->matchChar('(') &&
($this->selectors($subs, true) || true)
&&
$this->matchChar(')')
) {
$parts[] = '(';
while ($sub = array_shift($subs)) {
while ($ps = array_shift($sub)) {
foreach ($ps as &$p) {
$parts[] = $p;
}
if (count($sub) && reset($sub))
{
$parts[] = ' ';
}
}
if (count($subs) && reset($subs)) {
$parts[] = ', ';
}
}
$parts[] = ')';
} else {
$this->seek($ss);
}
} else {
if ($this->matchChar('(') &&
($this->openString(')', $str,
'(') || true) &&
$this->matchChar(')')
) {
$parts[] = '(';
if (! empty($str)) {
$parts[] = $str;
}
$parts[] = ')';
} else {
$this->seek($ss);
}
}
continue;
}
}
$this->seek($s);
// attribute selector
if ($char === '[' &&
$this->matchChar('[') &&
($this->openString(']', $str, '[')
|| true) &&
$this->matchChar(']')
) {
$parts[] = '[';
if (! empty($str)) {
$parts[] = $str;
}
$parts[] = ']';
continue;
}
$this->seek($s);
// for keyframes
if ($this->unit($unit)) {
$parts[] = $unit;
continue;
}
if ($this->keyword($name)) {
$parts[] = $name;
continue;
}
break;
}
$this->eatWhiteDefault = $oldWhite;
if (! $parts) {
return false;
}
$out = $parts;
return true;
}
/**
* Parse a variable
*
* @param array $out
*
* @return boolean
*/
protected function variable(&$out)
{
$s = $this->count;
if ($this->matchChar('$', false) &&
$this->keyword($name)) {
$out = [Type::T_VARIABLE, $name];
return true;
}
$this->seek($s);
return false;
}
/**
* Parse a keyword
*
* @param string $word
* @param boolean $eatWhitespace
*
* @return boolean
*/
protected function keyword(&$word, $eatWhitespace = null)
{
if ($this->match(
$this->utf8
?
'(([\pL\w\x{00A0}-\x{10FFFF}_\-\*!"\']|[\\\\].)([\pL\w\x{00A0}-\x{10FFFF}\-_"\']|[\\\\].)*)'
:
'(([\w_\-\*!"\']|[\\\\].)([\w\-_"\']|[\\\\].)*)',
$m,
$eatWhitespace
)) {
$word = $m[1];
return true;
}
return false;
}
/**
* Parse a placeholder
*
* @param string $placeholder
*
* @return boolean
*/
protected function placeholder(&$placeholder)
{
if ($this->match(
$this->utf8
? '([\pL\w\-_]+)'
: '([\w\-_]+)',
$m
)) {
$placeholder = $m[1];
return true;
}
if ($this->interpolation($placeholder)) {
return true;
}
return false;
}
/**
* Parse a url
*
* @param array $out
*
* @return boolean
*/
protected function url(&$out)
{
if
($this->match('(url\(\s*(["\']?)([^)]+)\2\s*\))',
$m)) {
$out = [Type::T_STRING, '', ['url(' . $m[2]
. $m[3] . $m[2] . ')']];
return true;
}
return false;
}
/**
* Consume an end of statement delimiter
*
* @return boolean
*/
protected function end()
{
if ($this->matchChar(';')) {
return true;
}
if ($this->count === strlen($this->buffer) ||
$this->buffer[$this->count] === '}') {
// if there is end of file or a closing block next then we
don't need a ;
return true;
}
return false;
}
/**
* Strip assignment flag from the list
*
* @param array $value
*
* @return array
*/
protected function stripAssignmentFlags(&$value)
{
$flags = [];
for ($token = &$value; $token[0] === Type::T_LIST &&
($s = count($token[2])); $token = &$lastNode) {
$lastNode = &$token[2][$s - 1];
while ($lastNode[0] === Type::T_KEYWORD &&
in_array($lastNode[1], ['!default', '!global'])) {
array_pop($token[2]);
$node = end($token[2]);
$token = $this->flattenList($token);
$flags[] = $lastNode[1];
$lastNode = $node;
}
}
return $flags;
}
/**
* Strip optional flag from selector list
*
* @param array $selectors
*
* @return string
*/
protected function stripOptionalFlag(&$selectors)
{
$optional = false;
$selector = end($selectors);
$part = end($selector);
if ($part === ['!optional']) {
array_pop($selectors[count($selectors) - 1]);
$optional = true;
}
return $optional;
}
/**
* Turn list of length 1 into value type
*
* @param array $value
*
* @return array
*/
protected function flattenList($value)
{
if ($value[0] === Type::T_LIST && count($value[2]) === 1) {
return $this->flattenList($value[2][0]);
}
return $value;
}
/**
* @deprecated
*
* {@internal
* advance counter to next occurrence of $what
* $until - don't include $what in advance
* $allowNewline, if string, will be used as valid char set
* }}
*/
protected function to($what, &$out, $until = false, $allowNewline =
false)
{
if (is_string($allowNewline)) {
$validChars = $allowNewline;
} else {
$validChars = $allowNewline ? '.' :
"[^\n]";
}
if (! $this->match('(' . $validChars . '*?)'
. $this->pregQuote($what), $m, ! $until)) {
return false;
}
if ($until) {
$this->count -= strlen($what); // give back $what
}
$out = $m[1];
return true;
}
/**
* @deprecated
*/
protected function show()
{
if ($this->peek("(.*?)(\n|$)", $m, $this->count)) {
return $m[1];
}
return '';
}
/**
* Quote regular expression
*
* @param string $what
*
* @return string
*/
private function pregQuote($what)
{
return preg_quote($what, '/');
}
/**
* Extract line numbers from buffer
*
* @param string $buffer
*/
private function extractLineNumbers($buffer)
{
$this->sourcePositions = [0 => 0];
$prev = 0;
while (($pos = strpos($buffer, "\n", $prev)) !== false) {
$this->sourcePositions[] = $pos;
$prev = $pos + 1;
}
$this->sourcePositions[] = strlen($buffer);
if (substr($buffer, -1) !== "\n") {
$this->sourcePositions[] = strlen($buffer) + 1;
}
}
/**
* Get source line number and column (given character position in the
buffer)
*
* @param integer $pos
*
* @return array
*/
private function getSourcePosition($pos)
{
$low = 0;
$high = count($this->sourcePositions);
while ($low < $high) {
$mid = (int) (($high + $low) / 2);
if ($pos < $this->sourcePositions[$mid]) {
$high = $mid - 1;
continue;
}
if ($pos >= $this->sourcePositions[$mid + 1]) {
$low = $mid + 1;
continue;
}
return [$mid + 1, $pos - $this->sourcePositions[$mid]];
}
return [$low + 1, $pos - $this->sourcePositions[$low]];
}
/**
* Save internal encoding
*/
private function saveEncoding()
{
if (version_compare(PHP_VERSION, '7.2.0') >= 0) {
return;
}
$iniDirective = 'mbstring' . '.func_overload';
// deprecated in PHP 7.2
if (ini_get($iniDirective) & 2) {
$this->encoding = mb_internal_encoding();
mb_internal_encoding('iso-8859-1');
}
}
/**
* Restore internal encoding
*/
private function restoreEncoding()
{
if ($this->encoding) {
mb_internal_encoding($this->encoding);
}
}
}
PK#d�[P#�=� �
scssphp/src/SourceMap/Base64.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2015 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\SourceMap;
/**
* Base 64 Encode/Decode
*
* @author Anthon Pang <anthon.pang@gmail.com>
*/
class Base64
{
/**
* @var array
*/
private static $encodingMap = [
0 => 'A',
1 => 'B',
2 => 'C',
3 => 'D',
4 => 'E',
5 => 'F',
6 => 'G',
7 => 'H',
8 => 'I',
9 => 'J',
10 => 'K',
11 => 'L',
12 => 'M',
13 => 'N',
14 => 'O',
15 => 'P',
16 => 'Q',
17 => 'R',
18 => 'S',
19 => 'T',
20 => 'U',
21 => 'V',
22 => 'W',
23 => 'X',
24 => 'Y',
25 => 'Z',
26 => 'a',
27 => 'b',
28 => 'c',
29 => 'd',
30 => 'e',
31 => 'f',
32 => 'g',
33 => 'h',
34 => 'i',
35 => 'j',
36 => 'k',
37 => 'l',
38 => 'm',
39 => 'n',
40 => 'o',
41 => 'p',
42 => 'q',
43 => 'r',
44 => 's',
45 => 't',
46 => 'u',
47 => 'v',
48 => 'w',
49 => 'x',
50 => 'y',
51 => 'z',
52 => '0',
53 => '1',
54 => '2',
55 => '3',
56 => '4',
57 => '5',
58 => '6',
59 => '7',
60 => '8',
61 => '9',
62 => '+',
63 => '/',
];
/**
* @var array
*/
private static $decodingMap = [
'A' => 0,
'B' => 1,
'C' => 2,
'D' => 3,
'E' => 4,
'F' => 5,
'G' => 6,
'H' => 7,
'I' => 8,
'J' => 9,
'K' => 10,
'L' => 11,
'M' => 12,
'N' => 13,
'O' => 14,
'P' => 15,
'Q' => 16,
'R' => 17,
'S' => 18,
'T' => 19,
'U' => 20,
'V' => 21,
'W' => 22,
'X' => 23,
'Y' => 24,
'Z' => 25,
'a' => 26,
'b' => 27,
'c' => 28,
'd' => 29,
'e' => 30,
'f' => 31,
'g' => 32,
'h' => 33,
'i' => 34,
'j' => 35,
'k' => 36,
'l' => 37,
'm' => 38,
'n' => 39,
'o' => 40,
'p' => 41,
'q' => 42,
'r' => 43,
's' => 44,
't' => 45,
'u' => 46,
'v' => 47,
'w' => 48,
'x' => 49,
'y' => 50,
'z' => 51,
0 => 52,
1 => 53,
2 => 54,
3 => 55,
4 => 56,
5 => 57,
6 => 58,
7 => 59,
8 => 60,
9 => 61,
'+' => 62,
'/' => 63,
];
/**
* Convert to base64
*
* @param integer $value
*
* @return string
*/
public static function encode($value)
{
return self::$encodingMap[$value];
}
/**
* Convert from base64
*
* @param string $value
*
* @return integer
*/
public static function decode($value)
{
return self::$decodingMap[$value];
}
}
PK#d�[�9�>>#scssphp/src/SourceMap/Base64VLQ.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2015 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\SourceMap;
use Leafo\ScssPhp\SourceMap\Base64;
/**
* Base 64 VLQ
*
* Based on the Base 64 VLQ implementation in Closure Compiler:
*
https://github.com/google/closure-compiler/blob/master/src/com/google/debugging/sourcemap/Base64VLQ.java
*
* Copyright 2011 The Closure Compiler Authors.
*
* Licensed under the Apache License, Version 2.0 (the
"License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS"
BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @author John Lenz <johnlenz@google.com>
* @author Anthon Pang <anthon.pang@gmail.com>
*/
class Base64VLQ
{
// A Base64 VLQ digit can represent 5 bits, so it is base-32.
const VLQ_BASE_SHIFT = 5;
// A mask of bits for a VLQ digit (11111), 31 decimal.
const VLQ_BASE_MASK = 31;
// The continuation bit is the 6th bit.
const VLQ_CONTINUATION_BIT = 32;
/**
* Returns the VLQ encoded value.
*
* @param integer $value
*
* @return string
*/
public static function encode($value)
{
$encoded = '';
$vlq = self::toVLQSigned($value);
do {
$digit = $vlq & self::VLQ_BASE_MASK;
$vlq >>= self::VLQ_BASE_SHIFT;
if ($vlq > 0) {
$digit |= self::VLQ_CONTINUATION_BIT;
}
$encoded .= Base64::encode($digit);
} while ($vlq > 0);
return $encoded;
}
/**
* Decodes VLQValue.
*
* @param string $str
* @param integer $index
*
* @return integer
*/
public static function decode($str, &$index)
{
$result = 0;
$shift = 0;
do {
$c = $str[$index++];
$digit = Base64::decode($c);
$continuation = ($digit & self::VLQ_CONTINUATION_BIT) != 0;
$digit &= self::VLQ_BASE_MASK;
$result = $result + ($digit << $shift);
$shift = $shift + self::VLQ_BASE_SHIFT;
} while ($continuation);
return self::fromVLQSigned($result);
}
/**
* Converts from a two-complement value to a value where the sign bit
is
* is placed in the least significant bit. For example, as decimals:
* 1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
* 2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
*
* @param integer $value
*
* @return integer
*/
private static function toVLQSigned($value)
{
if ($value < 0) {
return ((-$value) << 1) + 1;
}
return ($value << 1) + 0;
}
/**
* Converts to a two-complement value from a value where the sign bit
is
* is placed in the least significant bit. For example, as decimals:
* 2 (10 binary) becomes 1, 3 (11 binary) becomes -1
* 4 (100 binary) becomes 2, 5 (101 binary) becomes -2
*
* @param integer $value
*
* @return integer
*/
private static function fromVLQSigned($value)
{
$negate = ($value & 1) === 1;
$value = $value >> 1;
return $negate ? -$value : $value;
}
}
PK#d�[�-�|99*scssphp/src/SourceMap/Base64VLQEncoder.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\SourceMap;
/**
* Base64 VLQ Encoder
*
* {@internal Derivative of oyejorge/less.php's
lib/SourceMap/Base64VLQ.php, relicensed with permission. }}
*
* @author Josh Schmidt <oyejorge@gmail.com>
* @author Nicolas FRANÇOIS <nicolas.francois@frog-labs.com>
*/
class Base64VLQEncoder
{
/**
* Shift
*
* @var integer
*/
private $shift = 5;
/**
* Mask
*
* @var integer
*/
private $mask = 0x1F; // == (1 << shift) == 0b00011111
/**
* Continuation bit
*
* @var integer
*/
private $continuationBit = 0x20; // == (mask - 1 ) == 0b00100000
/**
* Char to integer map
*
* @var array
*/
private $charToIntMap = [
'A' => 0, 'B' => 1, 'C' =>
2, 'D' => 3, 'E' => 4, 'F' => 5,
'G' => 6, 'H' => 7,
'I' => 8, 'J' => 9, 'K' =>
10, 'L' => 11, 'M' => 12, 'N' => 13,
'O' => 14, 'P' => 15,
'Q' => 16, 'R' => 17, 'S' =>
18, 'T' => 19, 'U' => 20, 'V' => 21,
'W' => 22, 'X' => 23,
'Y' => 24, 'Z' => 25, 'a' =>
26, 'b' => 27, 'c' => 28, 'd' => 29,
'e' => 30, 'f' => 31,
'g' => 32, 'h' => 33, 'i' =>
34, 'j' => 35, 'k' => 36, 'l' => 37,
'm' => 38, 'n' => 39,
'o' => 40, 'p' => 41, 'q' =>
42, 'r' => 43, 's' => 44, 't' => 45,
'u' => 46, 'v' => 47,
'w' => 48, 'x' => 49, 'y' =>
50, 'z' => 51, 0 => 52, 1 => 53, 2 => 54, 3
=> 55,
4 => 56, 5 => 57, 6 => 58, 7 => 59, 8 =>
60, 9 => 61, '+' => 62, '/' => 63,
];
/**
* Integer to char map
*
* @var array
*/
private $intToCharMap = [
0 => 'A', 1 => 'B', 2 =>
'C', 3 => 'D', 4 => 'E', 5 =>
'F', 6 => 'G', 7 => 'H',
8 => 'I', 9 => 'J', 10 =>
'K', 11 => 'L', 12 => 'M', 13 =>
'N', 14 => 'O', 15 => 'P',
16 => 'Q', 17 => 'R', 18 =>
'S', 19 => 'T', 20 => 'U', 21 =>
'V', 22 => 'W', 23 => 'X',
24 => 'Y', 25 => 'Z', 26 =>
'a', 27 => 'b', 28 => 'c', 29 =>
'd', 30 => 'e', 31 => 'f',
32 => 'g', 33 => 'h', 34 =>
'i', 35 => 'j', 36 => 'k', 37 =>
'l', 38 => 'm', 39 => 'n',
40 => 'o', 41 => 'p', 42 =>
'q', 43 => 'r', 44 => 's', 45 =>
't', 46 => 'u', 47 => 'v',
48 => 'w', 49 => 'x', 50 =>
'y', 51 => 'z', 52 => '0', 53 =>
'1', 54 => '2', 55 => '3',
56 => '4', 57 => '5', 58 =>
'6', 59 => '7', 60 => '8', 61 =>
'9', 62 => '+', 63 => '/',
];
/**
* Constructor
*/
public function __construct()
{
// I leave it here for future reference
// foreach
(str_split('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/')
as $i => $char)
// {
// $this->charToIntMap[$char] = $i;
// $this->intToCharMap[$i] = $char;
// }
}
/**
* Convert from a two-complement value to a value where the sign bit is
* is placed in the least significant bit. For example, as decimals:
* 1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
* 2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
* We generate the value for 32 bit machines, hence -2147483648 becomes
1, not 4294967297,
* even on a 64 bit machine.
*
* @param string $aValue
*/
public function toVLQSigned($aValue)
{
return 0xffffffff & ($aValue < 0 ? ((-$aValue) << 1) +
1 : ($aValue << 1) + 0);
}
/**
* Convert to a two-complement value from a value where the sign bit is
* is placed in the least significant bit. For example, as decimals:
* 2 (10 binary) becomes 1, 3 (11 binary) becomes -1
* 4 (100 binary) becomes 2, 5 (101 binary) becomes -2
* We assume that the value was generated with a 32 bit machine in
mind.
* Hence
* 1 becomes -2147483648
* even on a 64 bit machine.
*
* @param integer $aValue
*/
public function fromVLQSigned($aValue)
{
return $aValue & 1 ? $this->zeroFill(~$aValue + 2, 1) | (-1
- 0x7fffffff) : $this->zeroFill($aValue, 1);
}
/**
* Return the base 64 VLQ encoded value.
*
* @param string $aValue The value to encode
*
* @return string The encoded value
*/
public function encode($aValue)
{
$encoded = '';
$vlq = $this->toVLQSigned($aValue);
do {
$digit = $vlq & $this->mask;
$vlq = $this->zeroFill($vlq, $this->shift);
if ($vlq > 0) {
$digit |= $this->continuationBit;
}
$encoded .= $this->base64Encode($digit);
} while ($vlq > 0);
return $encoded;
}
/**
* Return the value decoded from base 64 VLQ.
*
* @param string $encoded The encoded value to decode
*
* @return integer The decoded value
*/
public function decode($encoded)
{
$vlq = 0;
$i = 0;
do {
$digit = $this->base64Decode($encoded[$i]);
$vlq |= ($digit & $this->mask) << ($i *
$this->shift);
$i++;
} while ($digit & $this->continuationBit);
return $this->fromVLQSigned($vlq);
}
/**
* Right shift with zero fill.
*
* @param integer $a number to shift
* @param integer $b number of bits to shift
*
* @return integer
*/
public function zeroFill($a, $b)
{
return ($a >= 0) ? ($a >> $b) : ($a >> $b) &
(PHP_INT_MAX >> ($b - 1));
}
/**
* Encode single 6-bit digit as base64.
*
* @param integer $number
*
* @return string
*
* @throws \Exception If the number is invalid
*/
public function base64Encode($number)
{
if ($number < 0 || $number > 63) {
throw new \Exception(sprintf('Invalid number
"%s" given. Must be between 0 and 63.', $number));
}
return $this->intToCharMap[$number];
}
/**
* Decode single 6-bit digit from base64
*
* @param string $char
*
* @return integer
*
* @throws \Exception If the number is invalid
*/
public function base64Decode($char)
{
if (! array_key_exists($char, $this->charToIntMap)) {
throw new \Exception(sprintf('Invalid base 64 digit
"%s" given.', $char));
}
return $this->charToIntMap[$char];
}
}
PK#d�[Ky��
'
',scssphp/src/SourceMap/SourceMapGenerator.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\SourceMap;
use Leafo\ScssPhp\Exception\CompilerException;
/**
* Source Map Generator
*
* {@internal Derivative of oyejorge/less.php's
lib/SourceMap/Generator.php, relicensed with permission. }}
*
* @author Josh Schmidt <oyejorge@gmail.com>
* @author Nicolas FRANÇOIS <nicolas.francois@frog-labs.com>
*/
class SourceMapGenerator
{
/**
* What version of source map does the generator generate?
*/
const VERSION = 3;
/**
* Array of default options
*
* @var array
*/
protected $defaultOptions = [
// an optional source root, useful for relocating source files
// on a server or removing repeated values in the
'sources' entry.
// This value is prepended to the individual entries in the
'source' field.
'sourceRoot' => '',
// an optional name of the generated code that this source map is
associated with.
'sourceMapFilename' => null,
// url of the map
'sourceMapURL' => null,
// absolute path to a file to write the map to
'sourceMapWriteTo' => null,
// output source contents?
'outputSourceFiles' => false,
// base path for filename normalization
'sourceMapRootpath' => '',
// base path for filename normalization
'sourceMapBasepath' => ''
];
/**
* The base64 VLQ encoder
*
* @var \Leafo\ScssPhp\SourceMap\Base64VLQ
*/
protected $encoder;
/**
* Array of mappings
*
* @var array
*/
protected $mappings = [];
/**
* Array of contents map
*
* @var array
*/
protected $contentsMap = [];
/**
* File to content map
*
* @var array
*/
protected $sources = [];
protected $sourceKeys = [];
/**
* @var array
*/
private $options;
public function __construct(array $options = [])
{
$this->options = array_merge($this->defaultOptions,
$options);
$this->encoder = new Base64VLQ();
}
/**
* Adds a mapping
*
* @param integer $generatedLine The line number in generated file
* @param integer $generatedColumn The column number in generated file
* @param integer $originalLine The line number in original file
* @param integer $originalColumn The column number in original file
* @param string $sourceFile The original source file
*/
public function addMapping($generatedLine, $generatedColumn,
$originalLine, $originalColumn, $sourceFile)
{
$this->mappings[] = [
'generated_line' => $generatedLine,
'generated_column' => $generatedColumn,
'original_line' => $originalLine,
'original_column' => $originalColumn,
'source_file' => $sourceFile
];
$this->sources[$sourceFile] = $sourceFile;
}
/**
* Saves the source map to a file
*
* @param string $content The content to write
*
* @return string
*
* @throws \Leafo\ScssPhp\Exception\CompilerException If the file could
not be saved
*/
public function saveMap($content)
{
$file = $this->options['sourceMapWriteTo'];
$dir = dirname($file);
// directory does not exist
if (! is_dir($dir)) {
// FIXME: create the dir automatically?
throw new CompilerException(
sprintf('The directory "%s" does not exist.
Cannot save the source map.', $dir)
);
}
// FIXME: proper saving, with dir write check!
if (file_put_contents($file, $content) === false) {
throw new CompilerException(sprintf('Cannot save the
source map to "%s"', $file));
}
return $this->options['sourceMapURL'];
}
/**
* Generates the JSON source map
*
* @return string
*
* @see
https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit#
*/
public function generateJson()
{
$sourceMap = [];
$mappings = $this->generateMappings();
// File version (always the first entry in the object) and must be
a positive integer.
$sourceMap['version'] = self::VERSION;
// An optional name of the generated code that this source map is
associated with.
$file = $this->options['sourceMapFilename'];
if ($file) {
$sourceMap['file'] = $file;
}
// An optional source root, useful for relocating source files on a
server or removing repeated values in the
// 'sources' entry. This value is prepended to the
individual entries in the 'source' field.
$root = $this->options['sourceRoot'];
if ($root) {
$sourceMap['sourceRoot'] = $root;
}
// A list of original sources used by the 'mappings'
entry.
$sourceMap['sources'] = [];
foreach ($this->sources as $sourceUri => $sourceFilename) {
$sourceMap['sources'][] =
$this->normalizeFilename($sourceFilename);
}
// A list of symbol names used by the 'mappings' entry.
$sourceMap['names'] = [];
// A string with the encoded mapping data.
$sourceMap['mappings'] = $mappings;
if ($this->options['outputSourceFiles']) {
// An optional list of source content, useful when the
'source' can't be hosted.
// The contents are listed in the same order as the sources
above.
// 'null' may be used if some original sources should
be retrieved by name.
$sourceMap['sourcesContent'] =
$this->getSourcesContent();
}
// less.js compat fixes
if (count($sourceMap['sources']) &&
empty($sourceMap['sourceRoot'])) {
unset($sourceMap['sourceRoot']);
}
return json_encode($sourceMap, JSON_UNESCAPED_SLASHES);
}
/**
* Returns the sources contents
*
* @return array|null
*/
protected function getSourcesContent()
{
if (empty($this->sources)) {
return null;
}
$content = [];
foreach ($this->sources as $sourceFile) {
$content[] = file_get_contents($sourceFile);
}
return $content;
}
/**
* Generates the mappings string
*
* @return string
*/
public function generateMappings()
{
if (! count($this->mappings)) {
return '';
}
$this->sourceKeys = array_flip(array_keys($this->sources));
// group mappings by generated line number.
$groupedMap = $groupedMapEncoded = [];
foreach ($this->mappings as $m) {
$groupedMap[$m['generated_line']][] = $m;
}
ksort($groupedMap);
$lastGeneratedLine = $lastOriginalIndex = $lastOriginalLine =
$lastOriginalColumn = 0;
foreach ($groupedMap as $lineNumber => $lineMap) {
while (++$lastGeneratedLine < $lineNumber) {
$groupedMapEncoded[] = ';';
}
$lineMapEncoded = [];
$lastGeneratedColumn = 0;
foreach ($lineMap as $m) {
$mapEncoded =
$this->encoder->encode($m['generated_column'] -
$lastGeneratedColumn);
$lastGeneratedColumn = $m['generated_column'];
// find the index
if ($m['source_file']) {
$index =
$this->findFileIndex($m['source_file']);
if ($index !== false) {
$mapEncoded .= $this->encoder->encode($index
- $lastOriginalIndex);
$lastOriginalIndex = $index;
// lines are stored 0-based in SourceMap spec
version 3
$mapEncoded .=
$this->encoder->encode($m['original_line'] - 1 -
$lastOriginalLine);
$lastOriginalLine = $m['original_line'] -
1;
$mapEncoded .=
$this->encoder->encode($m['original_column'] -
$lastOriginalColumn);
$lastOriginalColumn =
$m['original_column'];
}
}
$lineMapEncoded[] = $mapEncoded;
}
$groupedMapEncoded[] = implode(',', $lineMapEncoded)
. ';';
}
return rtrim(implode($groupedMapEncoded), ';');
}
/**
* Finds the index for the filename
*
* @param string $filename
*
* @return integer|false
*/
protected function findFileIndex($filename)
{
return $this->sourceKeys[$filename];
}
/**
* Normalize filename
*
* @param string $filename
*
* @return string
*/
protected function normalizeFilename($filename)
{
$filename = $this->fixWindowsPath($filename);
$rootpath = $this->options['sourceMapRootpath'];
$basePath = $this->options['sourceMapBasepath'];
// "Trim" the 'sourceMapBasepath' from the
output filename.
if (strlen($basePath) && strpos($filename, $basePath) ===
0) {
$filename = substr($filename, strlen($basePath));
}
// Remove extra leading path separators.
if (strpos($filename, '\\') === 0 || strpos($filename,
'/') === 0) {
$filename = substr($filename, 1);
}
return $rootpath . $filename;
}
/**
* Fix windows paths
*
* @param string $path
* @param boolean $addEndSlash
*
* @return string
*/
public function fixWindowsPath($path, $addEndSlash = false)
{
$slash = ($addEndSlash) ? '/' : '';
if (! empty($path)) {
$path = str_replace('\\', '/', $path);
$path = rtrim($path, '/') . $slash;
}
return $path;
}
}
PK#d�[�
'%%scssphp/src/Type.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp;
/**
* Block/node types
*
* @author Anthon Pang <anthon.pang@gmail.com>
*/
class Type
{
const T_ASSIGN = 'assign';
const T_AT_ROOT = 'at-root';
const T_BLOCK = 'block';
const T_BREAK = 'break';
const T_CHARSET = 'charset';
const T_COLOR = 'color';
const T_COMMENT = 'comment';
const T_CONTINUE = 'continue';
const T_CONTROL = 'control';
const T_DEBUG = 'debug';
const T_DIRECTIVE = 'directive';
const T_EACH = 'each';
const T_ELSE = 'else';
const T_ELSEIF = 'elseif';
const T_ERROR = 'error';
const T_EXPRESSION = 'exp';
const T_EXTEND = 'extend';
const T_FOR = 'for';
const T_FUNCTION = 'function';
const T_FUNCTION_CALL = 'fncall';
const T_HSL = 'hsl';
const T_IF = 'if';
const T_IMPORT = 'import';
const T_INCLUDE = 'include';
const T_INTERPOLATE = 'interpolate';
const T_INTERPOLATED = 'interpolated';
const T_KEYWORD = 'keyword';
const T_LIST = 'list';
const T_MAP = 'map';
const T_MEDIA = 'media';
const T_MEDIA_EXPRESSION = 'mediaExp';
const T_MEDIA_TYPE = 'mediaType';
const T_MEDIA_VALUE = 'mediaValue';
const T_MIXIN = 'mixin';
const T_MIXIN_CONTENT = 'mixin_content';
const T_NESTED_PROPERTY = 'nestedprop';
const T_NOT = 'not';
const T_NULL = 'null';
const T_NUMBER = 'number';
const T_RETURN = 'return';
const T_ROOT = 'root';
const T_SCSSPHP_IMPORT_ONCE = 'scssphp-import-once';
const T_SELF = 'self';
const T_STRING = 'string';
const T_UNARY = 'unary';
const T_VARIABLE = 'var';
const T_WARN = 'warn';
const T_WHILE = 'while';
}
PK#d�[jОpBBscssphp/src/Util.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp;
use Leafo\ScssPhp\Base\Range;
use Leafo\ScssPhp\Exception\RangeException;
/**
* Utilty functions
*
* @author Anthon Pang <anthon.pang@gmail.com>
*/
class Util
{
/**
* Asserts that `value` falls within `range` (inclusive), leaving
* room for slight floating-point errors.
*
* @param string $name The name of the value. Used
in the error message.
* @param \Leafo\ScssPhp\Base\Range $range Range of values.
* @param array $value The value to check.
* @param string $unit The unit of the value. Used
in error reporting.
*
* @return mixed `value` adjusted to fall within range, if it was
outside by a floating-point margin.
*
* @throws \Leafo\ScssPhp\Exception\RangeException
*/
public static function checkRange($name, Range $range, $value, $unit =
'')
{
$val = $value[1];
$grace = new Range(-0.00001, 0.00001);
if ($range->includes($val)) {
return $val;
}
if ($grace->includes($val - $range->first)) {
return $range->first;
}
if ($grace->includes($val - $range->last)) {
return $range->last;
}
throw new RangeException("$name {$val} must be between
{$range->first} and {$range->last}$unit");
}
/**
* Encode URI component
*
* @param string $string
*
* @return string
*/
public static function encodeURIComponent($string)
{
$revert = ['%21' => '!', '%2A'
=> '*', '%27' => "'",
'%28' => '(', '%29' => ')'];
return strtr(rawurlencode($string), $revert);
}
}
PK#d�[Xi�388scssphp/src/Version.phpnu�[���<?php
/**
* SCSSPHP
*
* @copyright 2012-2018 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp;
/**
* SCSSPHP version
*
* @author Leaf Corcoran <leafot@gmail.com>
*/
class Version
{
const VERSION = 'v0.8.4';
}
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