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Editing: BaseDependencyCommand.php

<?php declare(strict_types=1);

/*
 * 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\Command;

use Composer\Package\Link;
use Composer\Package\Package;
use Composer\Package\PackageInterface;
use Composer\Package\CompletePackageInterface;
use Composer\Package\RootPackage;
use Composer\Repository\InstalledArrayRepository;
use Composer\Repository\CompositeRepository;
use Composer\Repository\RootPackageRepository;
use Composer\Repository\InstalledRepository;
use Composer\Repository\PlatformRepository;
use Composer\Repository\RepositoryFactory;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Composer\Semver\Constraint\Bound;
use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Formatter\OutputFormatterStyle;
use Composer\Package\Version\VersionParser;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Composer\Util\PackageInfo;

/**
 * Base implementation for commands mapping dependency relationships.
 *
 * @author Niels Keurentjes <niels.keurentjes@omines.com>
 */
abstract class BaseDependencyCommand extends BaseCommand
{
    protected const ARGUMENT_PACKAGE = 'package';
    protected const ARGUMENT_CONSTRAINT = 'version';
    protected const OPTION_RECURSIVE = 'recursive';
    protected const OPTION_TREE = 'tree';

/** @var string[] */
    protected $colors;

/**
     * Execute the command.
     *
     * @param  bool            $inverted Whether to invert matching process (why-not vs why behaviour)
     * @return int             Exit code of the operation.
     */
    protected function doExecute(InputInterface $input, OutputInterface $output, bool $inverted = false): int
    {
        // Emit command event on startup
        $composer = $this->requireComposer();
        $commandEvent = new CommandEvent(PluginEvents::COMMAND, $this->getName(), $input, $output);
        $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);

$repos = [];

$repos[] = new RootPackageRepository(clone $composer->getPackage());

if ($input->getOption('locked')) {
            $locker = $composer->getLocker();

if (!$locker->isLocked()) {
                throw new \UnexpectedValueException('A valid composer.lock file is required to run this command with --locked');
            }

$repos[] = $locker->getLockedRepository(true);
            $repos[] = new PlatformRepository([], $locker->getPlatformOverrides());
        } else {
            $localRepo = $composer->getRepositoryManager()->getLocalRepository();
            $rootPkg = $composer->getPackage();

if (count($localRepo->getPackages()) === 0 && (count($rootPkg->getRequires()) > 0 || count($rootPkg->getDevRequires()) > 0)) {
                $output->writeln('<warning>No dependencies installed. Try running composer install or update, or use --locked.</warning>');

return 1;
            }

$repos[] = $localRepo;

$platformOverrides = $composer->getConfig()->get('platform') ?: [];
            $repos[] = new PlatformRepository([], $platformOverrides);
        }

$installedRepo = new InstalledRepository($repos);

// Parse package name and constraint
        $needle = $input->getArgument(self::ARGUMENT_PACKAGE);
        $textConstraint = $input->hasArgument(self::ARGUMENT_CONSTRAINT) ? $input->getArgument(self::ARGUMENT_CONSTRAINT) : '*';

// Find packages that are or provide the requested package first
        $packages = $installedRepo->findPackagesWithReplacersAndProviders($needle);
        if (empty($packages)) {
            throw new \InvalidArgumentException(sprintf('Could not find package "%s" in your project', $needle));
        }

// If the version we ask for is not installed then we need to locate it in remote repos and add it.
        // This is needed for why-not to resolve conflicts from an uninstalled version against installed packages.
        $matchedPackage = $installedRepo->findPackage($needle, $textConstraint);
        if (!$matchedPackage) {
            $defaultRepos = new CompositeRepository(RepositoryFactory::defaultRepos($this->getIO(), $composer->getConfig(), $composer->getRepositoryManager()));
            if ($match = $defaultRepos->findPackage($needle, $textConstraint)) {
                $installedRepo->addRepository(new InstalledArrayRepository([clone $match]));
            } elseif (PlatformRepository::isPlatformPackage($needle)) {
                $parser = new VersionParser();
                $constraint = $parser->parseConstraints($textConstraint);
                if ($constraint->getLowerBound() !== Bound::zero()) {
                    $tempPlatformPkg = new Package($needle, $constraint->getLowerBound()->getVersion(), $constraint->getLowerBound()->getVersion());
                    $installedRepo->addRepository(new InstalledArrayRepository([$tempPlatformPkg]));
                }
            } else {
                $this->getIO()->writeError('<error>Package "'.$needle.'" could not be found with constraint "'.$textConstraint.'", results below will most likely be incomplete.</error>');
            }
        } elseif (PlatformRepository::isPlatformPackage($needle)) {
            $extraNotice = '';
            if (($matchedPackage->getExtra()['config.platform'] ?? false) === true) {
                $extraNotice = ' (version provided by config.platform)';
            }
            $this->getIO()->writeError('<info>Package "'.$needle.' '.$textConstraint.'" found in version "'.$matchedPackage->getPrettyVersion().'"'.$extraNotice.'.</info>');
        } elseif ($inverted) {
            $this->getIO()->write('<comment>Package "'.$needle.'" '.$matchedPackage->getPrettyVersion().' is already installed! To find out why, run `composer why '.$needle.'`</comment>');

return 0;
        }

// Include replaced packages for inverted lookups as they are then the actual starting point to consider
        $needles = [$needle];
        if ($inverted) {
            foreach ($packages as $package) {
                $needles = array_merge($needles, array_map(static function (Link $link): string {
                    return $link->getTarget();
                }, $package->getReplaces()));
            }
        }

// Parse constraint if one was supplied
        if ('*' !== $textConstraint) {
            $versionParser = new VersionParser();
            $constraint = $versionParser->parseConstraints($textConstraint);
        } else {
            $constraint = null;
        }

// Parse rendering options
        $renderTree = $input->getOption(self::OPTION_TREE);
        $recursive = $renderTree || $input->getOption(self::OPTION_RECURSIVE);

$return = $inverted ? 1 : 0;

// Resolve dependencies
        $results = $installedRepo->getDependents($needles, $constraint, $inverted, $recursive);
        if (empty($results)) {
            $extra = (null !== $constraint) ? sprintf(' in versions %smatching %s', $inverted ? 'not ' : '', $textConstraint) : '';
            $this->getIO()->writeError(sprintf(
                '<info>There is no installed package depending on "%s"%s</info>',
                $needle,
                $extra
            ));
            $return = $inverted ? 0 : 1;
        } elseif ($renderTree) {
            $this->initStyles($output);
            $root = $packages[0];
            $this->getIO()->write(sprintf('<info>%s</info> %s %s', $root->getPrettyName(), $root->getPrettyVersion(), $root instanceof CompletePackageInterface ? $root->getDescription() : ''));
            $this->printTree($results);
        } else {
            $this->printTable($output, $results);
        }

if ($inverted && $input->hasArgument(self::ARGUMENT_CONSTRAINT) && !PlatformRepository::isPlatformPackage($needle)) {
            $composerCommand = 'update';

foreach ($composer->getPackage()->getRequires() as $rootRequirement) {
                if ($rootRequirement->getTarget() === $needle) {
                    $composerCommand = 'require';
                    break;
                }
            }

foreach ($composer->getPackage()->getDevRequires() as $rootRequirement) {
                if ($rootRequirement->getTarget() === $needle) {
                    $composerCommand = 'require --dev';
                    break;
                }
            }

$this->getIO()->writeError('Not finding what you were looking for? Try calling `composer '.$composerCommand.' "'.$needle.':'.$textConstraint.'" --dry-run` to get another view on the problem.');
        }

return $return;
    }

/**
     * Assembles and prints a bottom-up table of the dependencies.
     *
     * @param array{PackageInterface, Link, array<mixed>|false}[] $results
     */
    protected function printTable(OutputInterface $output, array $results): void
    {
        $table = [];
        $doubles = [];
        do {
            $queue = [];
            $rows = [];
            foreach ($results as $result) {
                /**
                 * @var PackageInterface $package
                 * @var Link             $link
                 */
                [$package, $link, $children] = $result;
                $unique = (string) $link;
                if (isset($doubles[$unique])) {
                    continue;
                }
                $doubles[$unique] = true;
                $version = $package->getPrettyVersion() === RootPackage::DEFAULT_PRETTY_VERSION ? '-' : $package->getPrettyVersion();
                $packageUrl = PackageInfo::getViewSourceOrHomepageUrl($package);
                $nameWithLink = $packageUrl !== null ? '<href=' . OutputFormatter::escape($packageUrl) . '>' . $package->getPrettyName() . '</>' : $package->getPrettyName();
                $rows[] = [$nameWithLink, $version, $link->getDescription(), sprintf('%s (%s)', $link->getTarget(), $link->getPrettyConstraint())];
                if (is_array($children)) {
                    $queue = array_merge($queue, $children);
                }
            }
            $results = $queue;
            $table = array_merge($rows, $table);
        } while (\count($results) > 0);

$this->renderTable($table, $output);
    }

/**
     * Init styles for tree
     */
    protected function initStyles(OutputInterface $output): void
    {
        $this->colors = [
            'green',
            'yellow',
            'cyan',
            'magenta',
            'blue',
        ];

foreach ($this->colors as $color) {
            $style = new OutputFormatterStyle($color);
            $output->getFormatter()->setStyle($color, $style);
        }
    }

/**
     * Recursively prints a tree of the selected results.
     *
     * @param array{PackageInterface, Link, array<mixed>|false}[] $results Results to be printed at this level.
     * @param string  $prefix  Prefix of the current tree level.
     * @param int     $level   Current level of recursion.
     */
    protected function printTree(array $results, string $prefix = '', int $level = 1): void
    {
        $count = count($results);
        $idx = 0;
        foreach ($results as $result) {
            [$package, $link, $children] = $result;

$color = $this->colors[$level % count($this->colors)];
            $prevColor = $this->colors[($level - 1) % count($this->colors)];
            $isLast = (++$idx === $count);
            $versionText = $package->getPrettyVersion() === RootPackage::DEFAULT_PRETTY_VERSION ? '' : $package->getPrettyVersion();
            $packageUrl = PackageInfo::getViewSourceOrHomepageUrl($package);
            $nameWithLink = $packageUrl !== null ? '<href=' . OutputFormatter::escape($packageUrl) . '>' . $package->getPrettyName() . '</>' : $package->getPrettyName();
            $packageText = rtrim(sprintf('<%s>%s</%1$s> %s', $color, $nameWithLink, $versionText));
            $linkText = sprintf('%s <%s>%s</%2$s> %s', $link->getDescription(), $prevColor, $link->getTarget(), $link->getPrettyConstraint());
            $circularWarn = $children === false ? '(circular dependency aborted here)' : '';
            $this->writeTreeLine(rtrim(sprintf("%s%s%s (%s) %s", $prefix, $isLast ? '└──' : '├──', $packageText, $linkText, $circularWarn)));
            if (is_array($children)) {
                $this->printTree($children, $prefix . ($isLast ? '   ' : '│  '), $level + 1);
            }
        }
    }

private function writeTreeLine(string $line): void
    {
        $io = $this->getIO();
        if (!$io->isDecorated()) {
            $line = str_replace(['└', '├', '──', '│'], ['`-', '|-', '-', '|'], $line);
        }

$io->write($line);
    }
}

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