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Editing: PolicyCommand.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\Factory;
use Composer\FilterList\Source\SourceValidator;
use Composer\Json\JsonFile;
use Composer\Pcre\Preg;
use Composer\Policy\PolicyConfig;
use Composer\Console\Input\InputArgument;
use Symfony\Component\Console\Completion\CompletionInput;
use Symfony\Component\Console\Input\InputInterface;
use Composer\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Manage dependency policies and their sources.
 *
 * Examples:
 *  - composer policy add-source my-policy url https://example.org/my-pkgs.json
 *  - composer policy add-source my-policy '{"type":"url","url":"https://example.org/my-pkgs.json"}'
 */
class PolicyCommand extends BaseConfigCommand
{
    protected function configure(): void
    {
        $this
            ->setName('policy')
            ->setDescription('Manages custom dependency policies and their sources')
            ->setDefinition([
                new InputOption('global', 'g', InputOption::VALUE_NONE, 'Apply command to the global config file'),
                new InputOption('file', 'f', InputOption::VALUE_REQUIRED, 'If you want to choose a different composer.json or config.json'),
                new InputArgument('action', InputArgument::REQUIRED, 'Action to perform: add-source', null, ['add-source']),
                new InputArgument('name', InputArgument::OPTIONAL, 'Policy name', null, $this->suggestListNames()),
                new InputArgument('arg1', InputArgument::OPTIONAL, 'Source type (e.g. "url") for add-source', null, $this->suggestArg1()),
                new InputArgument('arg2', InputArgument::OPTIONAL, 'URL for add-source (if not using JSON)'),
            ])
            ->setHelp(
                <<<EOT
This command lets you manage custom dependency policies and their sources in composer.json.

Examples:
  composer policy add-source my-policy url https://example.org/my-pkgs.json
  composer policy add-source my-policy '{"type":"url","url":"https://example.org/my-pkgs.json"}'

Adding a source for a dependency policy that does not exist will create the policy.

Built-in dependency policies (advisories, malware, abandoned) do not accept sources and
are rejected by add-source. Use `composer config policy.<policy>.<field>`
to adjust their settings.

Use --global/-g to alter the global config.json instead.
Use --file to alter a specific file.
EOT
            );
    }

protected function execute(InputInterface $input, OutputInterface $output): int
    {
        $action = strtolower((string) $input->getArgument('action'));
        $listName = $input->getArgument('name');
        $arg1 = $input->getArgument('arg1');
        $arg2 = $input->getArgument('arg2');

switch ($action) {
            case 'add-source':
                if ($listName === null) {
                    throw new \RuntimeException('You must pass a dependency policy name. Example: composer policy add-source my-policy url https://example.org');
                }
                $this->assertCustomListName((string) $listName);
                if ($arg1 === null) {
                    throw new \RuntimeException('You must pass the source type and a url, or a JSON string.');
                }

if (is_string($arg1) && Preg::isMatch('{^\s*\{}', $arg1)) {
                    $sourceConfig = JsonFile::parseJson($arg1);
                    if (!is_array($sourceConfig)) {
                        throw new \RuntimeException('Source JSON must be an object.');
                    }
                } else {
                    if ($arg2 === null) {
                        throw new \RuntimeException('You must pass the source type and a url. Example: composer policy add-source my-policy url https://example.org');
                    }
                    $sourceConfig = ['type' => (string) $arg1, 'url' => (string) $arg2];
                }

$this->validateSourceConfig($listName, $sourceConfig);

$data = $this->configFile->read();
                $currentSources = $data['config']['policy'][$listName]['sources'] ?? [];
                if (!is_array($currentSources)) {
                    $currentSources = [];
                }

foreach ($currentSources as $existing) {
                    if (is_array($existing)
                        && ($existing['type'] ?? null) === $sourceConfig['type']
                        && ($existing['url'] ?? null) === ($sourceConfig['url'] ?? null)
                    ) {
                        $this->getIO()->write('<info>Source '.$sourceConfig['url'].' already present in policy '.$listName.'</info>');

return 0;
                    }
                }

$currentSources[] = $sourceConfig;
                $this->configSource->addConfigSetting('policy.'.$listName.'.sources', $currentSources);

return 0;

default:
                throw new \InvalidArgumentException('Unknown action "'.$action.'". Use add-source.');
        }
    }

private function assertCustomListName(string $name): void
    {
        if (in_array($name, PolicyConfig::BUILTIN_LIST_NAMES, true)) {
            throw new \RuntimeException('Built-in dependency policy "'.$name.'" does not support sources. Use `composer config policy.'.$name.'.<field>` to configure it.');
        }

$error = PolicyConfig::getFutureReservedListNameError($name);
        if ($error !== null) {
            throw new \RuntimeException($error);
        }

if ($name === '' || strpos($name, '.') !== false) {
            throw new \RuntimeException('Invalid dependency policy name "'.$name.'".');
        }
    }

/**
     * @param array<string, mixed> $source
     */
    private function validateSourceConfig(string $listName, array $source): void
    {
        $sourceValidator = new SourceValidator();
        $sourceValidator->validate($listName, $source);
    }

private function suggestListNames(): \Closure
    {
        return function (CompletionInput $input): array {
            $action = $input->getArgument('action');
            if (!in_array($action, ['add-source'], true)) {
                return [];
            }

$config = Factory::createConfig();
            $configFile = new JsonFile($this->getComposerConfigFile($input, $config));
            if (!$configFile->exists()) {
                return [];
            }

$data = $configFile->read();
            $policy = $data['config']['policy'] ?? [];
            if (!is_array($policy)) {
                return [];
            }

$names = [];
            foreach ($policy as $listName => $_) {
                if (in_array($listName, PolicyConfig::BUILTIN_LIST_NAMES, true) || in_array($listName, PolicyConfig::NON_LIST_KEYS, true)) {
                    continue;
                }
                $names[] = (string) $listName;
            }
            sort($names);

return $names;
        };
    }

private function suggestArg1(): \Closure
    {
        return static function (CompletionInput $input): array {
            if ($input->getArgument('action') === 'add-source') {
                return ['url'];
            }

return [];
        };
    }
}

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