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backend/vendor/symfony/flex/src/PackageResolver.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Flex;
+
+use Composer\Factory;
+use Composer\Package\Version\VersionParser;
+use Composer\Repository\PlatformRepository;
+use Composer\Semver\Constraint\MatchAllConstraint;
+
+/**
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class PackageResolver
+{
+    private static $SYMFONY_VERSIONS = ['lts', 'previous', 'stable', 'next', 'dev'];
+    private $downloader;
+
+    public function __construct(Downloader $downloader)
+    {
+        $this->downloader = $downloader;
+    }
+
+    public function resolve(array $arguments = [], bool $isRequire = false): array
+    {
+        // first pass split on : and = to resolve package names
+        $packages = [];
+        foreach ($arguments as $i => $argument) {
+            if ((false !== $pos = strpos($argument, ':')) || (false !== $pos = strpos($argument, '='))) {
+                $package = $this->resolvePackageName(substr($argument, 0, $pos), $i, $isRequire);
+                $version = substr($argument, $pos + 1);
+                $packages[] = $package.':'.$version;
+            } else {
+                $packages[] = $this->resolvePackageName($argument, $i, $isRequire);
+            }
+        }
+
+        // second pass to resolve versions
+        $versionParser = new VersionParser();
+        $requires = [];
+        $toGuess = [];
+        foreach ($versionParser->parseNameVersionPairs($packages) as $package) {
+            $version = $this->parseVersion($package['name'], $package['version'] ?? '', $isRequire);
+            if ('' !== $version) {
+                unset($toGuess[$package['name']]);
+            } elseif (!isset($requires[$package['name']])) {
+                $toGuess[$package['name']] = new MatchAllConstraint();
+            }
+            $requires[$package['name']] = $package['name'].$version;
+        }
+
+        if ($toGuess && $isRequire) {
+            foreach ($this->downloader->getSymfonyPacks($toGuess) as $package) {
+                $requires[$package] .= ':*';
+            }
+        }
+
+        return array_values($requires);
+    }
+
+    public function parseVersion(string $package, string $version, bool $isRequire): string
+    {
+        $guess = 'guess' === ($version ?: 'guess');
+
+        if (!str_starts_with($package, 'symfony/')) {
+            return $guess ? '' : ':'.$version;
+        }
+
+        $versions = $this->downloader->getVersions();
+
+        if (!isset($versions['splits'][$package])) {
+            return $guess ? '' : ':'.$version;
+        }
+
+        if ($guess || '*' === $version) {
+            try {
+                $config = @json_decode(file_get_contents(Factory::getComposerFile()), true);
+            } finally {
+                if (!$isRequire || !isset($config['extra']['symfony']['require'])) {
+                    return '';
+                }
+            }
+            $version = $config['extra']['symfony']['require'];
+        } elseif ('dev' === $version) {
+            $version = '^'.$versions['dev-name'].'@dev';
+        } elseif ('next' === $version) {
+            $version = '^'.$versions[$version].'@dev';
+        } elseif (\in_array($version, self::$SYMFONY_VERSIONS, true)) {
+            $version = '^'.$versions[$version];
+        }
+
+        return ':'.$version;
+    }
+
+    private function resolvePackageName(string $argument, int $position, bool $isRequire): string
+    {
+        $skippedPackages = ['mirrors', 'nothing', ''];
+
+        if (!$isRequire) {
+            $skippedPackages[] = 'lock';
+        }
+
+        if (str_contains($argument, '/') || preg_match(PlatformRepository::PLATFORM_PACKAGE_REGEX, $argument) || preg_match('{(?<=[a-z0-9_/-])\*|\*(?=[a-z0-9_/-])}i', $argument) || \in_array($argument, $skippedPackages)) {
+            return $argument;
+        }
+
+        $aliases = $this->downloader->getAliases();
+
+        if (isset($aliases[$argument])) {
+            $argument = $aliases[$argument];
+        } else {
+            // is it a version or an alias that does not exist?
+            try {
+                $versionParser = new VersionParser();
+                $versionParser->parseConstraints($argument);
+            } catch (\UnexpectedValueException $e) {
+                // is it a special Symfony version?
+                if (!\in_array($argument, self::$SYMFONY_VERSIONS, true)) {
+                    $this->throwAlternatives($argument, $position);
+                }
+            }
+        }
+
+        return $argument;
+    }
+
+    /**
+     * @throws \UnexpectedValueException
+     */
+    private function throwAlternatives(string $argument, int $position)
+    {
+        $alternatives = [];
+        foreach ($this->downloader->getAliases() as $alias => $package) {
+            $lev = levenshtein($argument, $alias);
+            if ($lev <= \strlen($argument) / 3 || ('' !== $argument && str_contains($alias, $argument))) {
+                $alternatives[$package][] = $alias;
+            }
+        }
+
+        // First position can only be a package name, not a version
+        if ($alternatives || 0 === $position) {
+            $message = \sprintf('"%s" is not a valid alias.', $argument);
+            if ($alternatives) {
+                if (1 === \count($alternatives)) {
+                    $message .= " Did you mean this:\n";
+                } else {
+                    $message .= " Did you mean one of these:\n";
+                }
+                foreach ($alternatives as $package => $aliases) {
+                    $message .= \sprintf("  \"%s\", supported aliases: \"%s\"\n", $package, implode('", "', $aliases));
+                }
+            }
+        } else {
+            $message = \sprintf('Could not parse version constraint "%s".', $argument);
+        }
+
+        throw new \UnexpectedValueException($message);
+    }
+}