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Current File:~$ /home/lmsyaran/www/j3/libraries/phpseclib/vendor/composer/InstalledVersions.php

<?php

/*
 * This file is part of Composer.
 *
 * (c) Nils Adermann <naderman@naderman.de>
 *     Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Composer;

use Composer\Autoload\ClassLoader;
use Composer\Semver\VersionParser;

/**
 * This class is copied in every Composer installed project and available
to all
 *
 * See also https://getcomposer.org/doc/07-runtime.md#installed-versions
 *
 * To require its presence, you can require `composer-runtime-api ^2.0`
 */
class InstalledVersions
{
    /**
     * @var mixed[]|null
     * @psalm-var array{root: array{name: string, version: string,
reference: string, pretty_version: string, aliases: string[], dev: bool,
install_path: string, type: string}, versions: array<string,
array{dev_requirement: bool, pretty_version?: string, version?: string,
aliases?: string[], reference?: string, replaced?: string[], provided?:
string[], install_path?: string, type?: string}>}|array{}|null
     */
    private static $installed;

    /**
     * @var bool|null
     */
    private static $canGetVendors;

    /**
     * @var array[]
     * @psalm-var array<string, array{root: array{name: string, version:
string, reference: string, pretty_version: string, aliases: string[], dev:
bool, install_path: string, type: string}, versions: array<string,
array{dev_requirement: bool, pretty_version?: string, version?: string,
aliases?: string[], reference?: string, replaced?: string[], provided?:
string[], install_path?: string, type?: string}>}>
     */
    private static $installedByVendor = array();

    /**
     * Returns a list of all package names which are present, either by
being installed, replaced or provided
     *
     * @return string[]
     * @psalm-return list<string>
     */
    public static function getInstalledPackages()
    {
        $packages = array();
        foreach (self::getInstalled() as $installed) {
            $packages[] = array_keys($installed['versions']);
        }

        if (1 === \count($packages)) {
            return $packages[0];
        }

        return
array_keys(array_flip(\call_user_func_array('array_merge',
$packages)));
    }

    /**
     * Returns a list of all package names with a specific type e.g.
'library'
     *
     * @param  string   $type
     * @return string[]
     * @psalm-return list<string>
     */
    public static function getInstalledPackagesByType($type)
    {
        $packagesByType = array();

        foreach (self::getInstalled() as $installed) {
            foreach ($installed['versions'] as $name =>
$package) {
                if (isset($package['type']) &&
$package['type'] === $type) {
                    $packagesByType[] = $name;
                }
            }
        }

        return $packagesByType;
    }

    /**
     * Checks whether the given package is installed
     *
     * This also returns true if the package name is provided or replaced
by another package
     *
     * @param  string $packageName
     * @param  bool   $includeDevRequirements
     * @return bool
     */
    public static function isInstalled($packageName,
$includeDevRequirements = true)
    {
        foreach (self::getInstalled() as $installed) {
            if (isset($installed['versions'][$packageName])) {
                return $includeDevRequirements ||
empty($installed['versions'][$packageName]['dev_requirement']);
            }
        }

        return false;
    }

    /**
     * Checks whether the given package satisfies a version constraint
     *
     * e.g. If you want to know whether version 2.3+ of package foo/bar is
installed, you would call:
     *
     *   Composer\InstalledVersions::satisfies(new VersionParser,
'foo/bar', '^2.3')
     *
     * @param  VersionParser $parser      Install composer/semver to have
access to this class and functionality
     * @param  string        $packageName
     * @param  string|null   $constraint  A version constraint to check
for, if you pass one you have to make sure composer/semver is required by
your package
     * @return bool
     */
    public static function satisfies(VersionParser $parser, $packageName,
$constraint)
    {
        $constraint = $parser->parseConstraints($constraint);
        $provided =
$parser->parseConstraints(self::getVersionRanges($packageName));

        return $provided->matches($constraint);
    }

    /**
     * Returns a version constraint representing all the range(s) which are
installed for a given package
     *
     * It is easier to use this via isInstalled() with the $constraint
argument if you need to check
     * whether a given version of a package is installed, and not just
whether it exists
     *
     * @param  string $packageName
     * @return string Version constraint usable with composer/semver
     */
    public static function getVersionRanges($packageName)
    {
        foreach (self::getInstalled() as $installed) {
            if (!isset($installed['versions'][$packageName])) {
                continue;
            }

            $ranges = array();
            if
(isset($installed['versions'][$packageName]['pretty_version']))
{
                $ranges[] =
$installed['versions'][$packageName]['pretty_version'];
            }
            if (array_key_exists('aliases',
$installed['versions'][$packageName])) {
                $ranges = array_merge($ranges,
$installed['versions'][$packageName]['aliases']);
            }
            if (array_key_exists('replaced',
$installed['versions'][$packageName])) {
                $ranges = array_merge($ranges,
$installed['versions'][$packageName]['replaced']);
            }
            if (array_key_exists('provided',
$installed['versions'][$packageName])) {
                $ranges = array_merge($ranges,
$installed['versions'][$packageName]['provided']);
            }

            return implode(' || ', $ranges);
        }

        throw new \OutOfBoundsException('Package "' .
$packageName . '" is not installed');
    }

    /**
     * @param  string      $packageName
     * @return string|null If the package is being replaced or provided but
is not really installed, null will be returned as version, use satisfies or
getVersionRanges if you need to know if a given version is present
     */
    public static function getVersion($packageName)
    {
        foreach (self::getInstalled() as $installed) {
            if (!isset($installed['versions'][$packageName])) {
                continue;
            }

            if
(!isset($installed['versions'][$packageName]['version']))
{
                return null;
            }

            return
$installed['versions'][$packageName]['version'];
        }

        throw new \OutOfBoundsException('Package "' .
$packageName . '" is not installed');
    }

    /**
     * @param  string      $packageName
     * @return string|null If the package is being replaced or provided but
is not really installed, null will be returned as version, use satisfies or
getVersionRanges if you need to know if a given version is present
     */
    public static function getPrettyVersion($packageName)
    {
        foreach (self::getInstalled() as $installed) {
            if (!isset($installed['versions'][$packageName])) {
                continue;
            }

            if
(!isset($installed['versions'][$packageName]['pretty_version']))
{
                return null;
            }

            return
$installed['versions'][$packageName]['pretty_version'];
        }

        throw new \OutOfBoundsException('Package "' .
$packageName . '" is not installed');
    }

    /**
     * @param  string      $packageName
     * @return string|null If the package is being replaced or provided but
is not really installed, null will be returned as reference
     */
    public static function getReference($packageName)
    {
        foreach (self::getInstalled() as $installed) {
            if (!isset($installed['versions'][$packageName])) {
                continue;
            }

            if
(!isset($installed['versions'][$packageName]['reference']))
{
                return null;
            }

            return
$installed['versions'][$packageName]['reference'];
        }

        throw new \OutOfBoundsException('Package "' .
$packageName . '" is not installed');
    }

    /**
     * @param  string      $packageName
     * @return string|null If the package is being replaced or provided but
is not really installed, null will be returned as install path. Packages of
type metapackages also have a null install path.
     */
    public static function getInstallPath($packageName)
    {
        foreach (self::getInstalled() as $installed) {
            if (!isset($installed['versions'][$packageName])) {
                continue;
            }

            return
isset($installed['versions'][$packageName]['install_path'])
? $installed['versions'][$packageName]['install_path']
: null;
        }

        throw new \OutOfBoundsException('Package "' .
$packageName . '" is not installed');
    }

    /**
     * @return array
     * @psalm-return array{name: string, version: string, reference:
string, pretty_version: string, aliases: string[], dev: bool, install_path:
string, type: string}
     */
    public static function getRootPackage()
    {
        $installed = self::getInstalled();

        return $installed[0]['root'];
    }

    /**
     * Returns the raw installed.php data for custom implementations
     *
     * @deprecated Use getAllRawData() instead which returns all datasets
for all autoloaders present in the process. getRawData only returns the
first dataset loaded, which may not be what you expect.
     * @return array[]
     * @psalm-return array{root: array{name: string, version: string,
reference: string, pretty_version: string, aliases: string[], dev: bool,
install_path: string, type: string}, versions: array<string,
array{dev_requirement: bool, pretty_version?: string, version?: string,
aliases?: string[], reference?: string, replaced?: string[], provided?:
string[], install_path?: string, type?: string}>}
     */
    public static function getRawData()
    {
        @trigger_error('getRawData only returns the first dataset
loaded, which may not be what you expect. Use getAllRawData() instead which
returns all datasets for all autoloaders present in the process.',
E_USER_DEPRECATED);

        if (null === self::$installed) {
            // only require the installed.php file if this file is loaded
from its dumped location,
            // and not from its source location in the composer/composer
package, see https://github.com/composer/composer/issues/9937
            if (substr(__DIR__, -8, 1) !== 'C') {
                self::$installed = include __DIR__ .
'/installed.php';
            } else {
                self::$installed = array();
            }
        }

        return self::$installed;
    }

    /**
     * Returns the raw data of all installed.php which are currently loaded
for custom implementations
     *
     * @return array[]
     * @psalm-return list<array{root: array{name: string, version:
string, reference: string, pretty_version: string, aliases: string[], dev:
bool, install_path: string, type: string}, versions: array<string,
array{dev_requirement: bool, pretty_version?: string, version?: string,
aliases?: string[], reference?: string, replaced?: string[], provided?:
string[], install_path?: string, type?: string}>}>
     */
    public static function getAllRawData()
    {
        return self::getInstalled();
    }

    /**
     * Lets you reload the static array from another file
     *
     * This is only useful for complex integrations in which a project
needs to use
     * this class but then also needs to execute another project's
autoloader in process,
     * and wants to ensure both projects have access to their version of
installed.php.
     *
     * A typical case would be PHPUnit, where it would need to make sure it
reads all
     * the data it needs from this class, then call reload() with
     * `require $CWD/vendor/composer/installed.php` (or similar) as input
to make sure
     * the project in which it runs can then also use this class safely,
without
     * interference between PHPUnit's dependencies and the
project's dependencies.
     *
     * @param  array[] $data A vendor/composer/installed.php data set
     * @return void
     *
     * @psalm-param array{root: array{name: string, version: string,
reference: string, pretty_version: string, aliases: string[], dev: bool,
install_path: string, type: string}, versions: array<string,
array{dev_requirement: bool, pretty_version?: string, version?: string,
aliases?: string[], reference?: string, replaced?: string[], provided?:
string[], install_path?: string, type?: string}>} $data
     */
    public static function reload($data)
    {
        self::$installed = $data;
        self::$installedByVendor = array();
    }

    /**
     * @return array[]
     * @psalm-return list<array{root: array{name: string, version:
string, reference: string, pretty_version: string, aliases: string[], dev:
bool, install_path: string, type: string}, versions: array<string,
array{dev_requirement: bool, pretty_version?: string, version?: string,
aliases?: string[], reference?: string, replaced?: string[], provided?:
string[], install_path?: string, type?: string}>}>
     */
    private static function getInstalled()
    {
        if (null === self::$canGetVendors) {
            self::$canGetVendors =
method_exists('Composer\Autoload\ClassLoader',
'getRegisteredLoaders');
        }

        $installed = array();

        if (self::$canGetVendors) {
            foreach (ClassLoader::getRegisteredLoaders() as $vendorDir
=> $loader) {
                if (isset(self::$installedByVendor[$vendorDir])) {
                    $installed[] = self::$installedByVendor[$vendorDir];
                } elseif
(is_file($vendorDir.'/composer/installed.php')) {
                    $installed[] = self::$installedByVendor[$vendorDir] =
require $vendorDir.'/composer/installed.php';
                    if (null === self::$installed &&
strtr($vendorDir.'/composer', '\\', '/') ===
strtr(__DIR__, '\\', '/')) {
                        self::$installed = $installed[count($installed) -
1];
                    }
                }
            }
        }

        if (null === self::$installed) {
            // only require the installed.php file if this file is loaded
from its dumped location,
            // and not from its source location in the composer/composer
package, see https://github.com/composer/composer/issues/9937
            if (substr(__DIR__, -8, 1) !== 'C') {
                self::$installed = require __DIR__ .
'/installed.php';
            } else {
                self::$installed = array();
            }
        }
        $installed[] = self::$installed;

        return $installed;
    }
}