<?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\Downloader;

use Composer\Package\PackageInterface;
use Symfony\Component\Finder\Finder;
use Composer\IO\IOInterface;

/**
 * Base downloader for archives
 *
 * @author Kirill chEbba Chebunin <iam@chebba.org>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author François Pluchino <francois.pluchino@opendisplay.com>
 */
abstract class ArchiveDownloader extends FileDownloader
{
    /**
     * {@inheritDoc}
     * @throws \RuntimeException
     * @throws \UnexpectedValueException
     */
    public function download(PackageInterface $package, $path, $output = true)
    {
        $temporaryDir = $this->config->get('vendor-dir').'/composer/'.substr(md5(uniqid('', true)), 0, 8);
        $retries = 3;
        while ($retries--) {
            $fileName = parent::download($package, $path, $output);

            if ($output) {
                $this->io->writeError(' Extracting archive', false, IOInterface::VERBOSE);
            }

            try {
                $this->filesystem->ensureDirectoryExists($temporaryDir);
                try {
                    $this->extract($fileName, $temporaryDir);
                } catch (\Exception $e) {
                    // remove cache if the file was corrupted
                    parent::clearLastCacheWrite($package);
                    throw $e;
                }

                $this->filesystem->unlink($fileName);

                $contentDir = $this->getFolderContent($temporaryDir);

                // only one dir in the archive, extract its contents out of it
                if (1 === count($contentDir) && is_dir(reset($contentDir))) {
                    $contentDir = $this->getFolderContent((string) reset($contentDir));
                }

                // move files back out of the temp dir
                foreach ($contentDir as $file) {
                    $file = (string) $file;
                    $this->filesystem->rename($file, $path . '/' . basename($file));
                }

                $this->filesystem->removeDirectory($temporaryDir);
                if ($this->filesystem->isDirEmpty($this->config->get('vendor-dir').'/composer/')) {
                    $this->filesystem->removeDirectory($this->config->get('vendor-dir').'/composer/');
                }
                if ($this->filesystem->isDirEmpty($this->config->get('vendor-dir'))) {
                    $this->filesystem->removeDirectory($this->config->get('vendor-dir'));
                }
            } catch (\Exception $e) {
                // clean up
                $this->filesystem->removeDirectory($path);
                $this->filesystem->removeDirectory($temporaryDir);

                // retry downloading if we have an invalid zip file
                if ($retries && $e instanceof \UnexpectedValueException && class_exists('ZipArchive') && $e->getCode() === \ZipArchive::ER_NOZIP) {
                    $this->io->writeError('');
                    if ($this->io->isDebug()) {
                        $this->io->writeError('    Invalid zip file ('.$e->getMessage().'), retrying...');
                    } else {
                        $this->io->writeError('    Invalid zip file, retrying...');
                    }
                    usleep(500000);
                    continue;
                }

                throw $e;
            }

            break;
        }
    }

    /**
     * {@inheritdoc}
     */
    protected function getFileName(PackageInterface $package, $path)
    {
        return rtrim($path.'/'.md5($path.spl_object_hash($package)).'.'.pathinfo(parse_url($package->getDistUrl(), PHP_URL_PATH), PATHINFO_EXTENSION), '.');
    }

    /**
     * Extract file to directory
     *
     * @param string $file Extracted file
     * @param string $path Directory
     *
     * @throws \UnexpectedValueException If can not extract downloaded file to path
     */
    abstract protected function extract($file, $path);

    /**
     * Returns the folder content, excluding dotfiles
     *
     * @param  string         $dir Directory
     * @return \SplFileInfo[]
     */
    private function getFolderContent($dir)
    {
        $finder = Finder::create()
            ->ignoreVCS(false)
            ->ignoreDotFiles(false)
            ->notName('.DS_Store')
            ->depth(0)
            ->in($dir);

        return iterator_to_array($finder);
    }
}


<?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\Downloader;

use Composer\Config;
use Composer\Package\Dumper\ArrayDumper;
use Composer\Package\PackageInterface;
use Composer\Package\Version\VersionGuesser;
use Composer\Package\Version\VersionParser;
use Composer\Util\ProcessExecutor;
use Composer\IO\IOInterface;
use Composer\Util\Filesystem;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
abstract class VcsDownloader implements DownloaderInterface, ChangeReportInterface, VcsCapableDownloaderInterface
{
    /** @var IOInterface */
    protected $io;
    /** @var Config */
    protected $config;
    /** @var ProcessExecutor */
    protected $process;
    /** @var Filesystem */
    protected $filesystem;

    public function __construct(IOInterface $io, Config $config, ProcessExecutor $process = null, Filesystem $fs = null)
    {
        $this->io = $io;
        $this->config = $config;
        $this->process = $process ?: new ProcessExecutor($io);
        $this->filesystem = $fs ?: new Filesystem($this->process);
    }

    /**
     * {@inheritDoc}
     */
    public function getInstallationSource()
    {
        return 'source';
    }

    /**
     * {@inheritDoc}
     */
    public function download(PackageInterface $package, $path)
    {
        if (!$package->getSourceReference()) {
            throw new \InvalidArgumentException('Package '.$package->getPrettyName().' is missing reference information');
        }

        $this->io->writeError("  - Installing <info>" . $package->getName() . "</info> (<comment>" . $package->getFullPrettyVersion() . "</comment>): ", false);
        $this->filesystem->emptyDirectory($path);

        $urls = $package->getSourceUrls();
        while ($url = array_shift($urls)) {
            try {
                if (Filesystem::isLocalPath($url)) {
                    // realpath() below will not understand
                    // url that starts with "file://"
                    $needle = 'file://';
                    $isFileProtocol = false;
                    if (0 === strpos($url, $needle)) {
                        $url = substr($url, strlen($needle));
                        $isFileProtocol = true;
                    }

                    // realpath() below will not understand %20 spaces etc.
                    if (false !== strpos($url, '%')) {
                        $url = rawurldecode($url);
                    }

                    $url = realpath($url);

                    if ($isFileProtocol) {
                        $url = $needle . $url;
                    }
                }
                $this->doDownload($package, $path, $url);
                break;
            } catch (\Exception $e) {
                // rethrow phpunit exceptions to avoid hard to debug bug failures
                if ($e instanceof \PHPUnit_Framework_Exception) {
                    throw $e;
                }
                if ($this->io->isDebug()) {
                    $this->io->writeError('Failed: ['.get_class($e).'] '.$e->getMessage());
                } elseif (count($urls)) {
                    $this->io->writeError('    Failed, trying the next URL');
                }
                if (!count($urls)) {
                    throw $e;
                }
            }
        }
    }

    /**
     * {@inheritDoc}
     */
    public function update(PackageInterface $initial, PackageInterface $target, $path)
    {
        if (!$target->getSourceReference()) {
            throw new \InvalidArgumentException('Package '.$target->getPrettyName().' is missing reference information');
        }

        $name = $target->getName();
        if ($initial->getPrettyVersion() == $target->getPrettyVersion()) {
            if ($target->getSourceType() === 'svn') {
                $from = $initial->getSourceReference();
                $to = $target->getSourceReference();
            } else {
                $from = substr($initial->getSourceReference(), 0, 7);
                $to = substr($target->getSourceReference(), 0, 7);
            }
            $name .= ' '.$initial->getPrettyVersion();
        } else {
            $from = $initial->getFullPrettyVersion();
            $to = $target->getFullPrettyVersion();
        }

        $actionName = VersionParser::isUpgrade($initial->getVersion(), $target->getVersion()) ? 'Updating' : 'Downgrading';
        $this->io->writeError("  - " . $actionName . " <info>" . $name . "</info> (<comment>" . $from . "</comment> => <comment>" . $to . "</comment>): ", false);

        $this->cleanChanges($initial, $path, true);
        $urls = $target->getSourceUrls();

        $exception = null;
        while ($url = array_shift($urls)) {
            try {
                if (Filesystem::isLocalPath($url)) {
                    $url = realpath($url);
                }
                $this->doUpdate($initial, $target, $path, $url);

                $exception = null;
                break;
            } catch (\Exception $exception) {
                // rethrow phpunit exceptions to avoid hard to debug bug failures
                if ($exception instanceof \PHPUnit_Framework_Exception) {
                    throw $exception;
                }
                if ($this->io->isDebug()) {
                    $this->io->writeError('Failed: ['.get_class($exception).'] '.$exception->getMessage());
                } elseif (count($urls)) {
                    $this->io->writeError('    Failed, trying the next URL');
                }
            }
        }

        $this->reapplyChanges($path);

        // print the commit logs if in verbose mode and VCS metadata is present
        // because in case of missing metadata code would trigger another exception
        if (!$exception && $this->io->isVerbose() && $this->hasMetadataRepository($path)) {
            $message = 'Pulling in changes:';
            $logs = $this->getCommitLogs($initial->getSourceReference(), $target->getSourceReference(), $path);

            if (!trim($logs)) {
                $message = 'Rolling back changes:';
                $logs = $this->getCommitLogs($target->getSourceReference(), $initial->getSourceReference(), $path);
            }

            if (trim($logs)) {
                $logs = implode("\n", array_map(function ($line) {
                    return '      ' . $line;
                }, explode("\n", $logs)));

                // escape angle brackets for proper output in the console
                $logs = str_replace('<', '\<', $logs);

                $this->io->writeError('    '.$message);
                $this->io->writeError($logs);
            }
        }

        if (!$urls && $exception) {
            throw $exception;
        }
    }

    /**
     * {@inheritDoc}
     */
    public function remove(PackageInterface $package, $path)
    {
        $this->io->writeError("  - Removing <info>" . $package->getName() . "</info> (<comment>" . $package->getPrettyVersion() . "</comment>)");
        $this->cleanChanges($package, $path, false);
        if (!$this->filesystem->removeDirectory($path)) {
            throw new \RuntimeException('Could not completely delete '.$path.', aborting.');
        }
    }

    /**
     * Download progress information is not available for all VCS downloaders.
     * {@inheritDoc}
     */
    public function setOutputProgress($outputProgress)
    {
        return $this;
    }

    /**
     * {@inheritDoc}
     */
    public function getVcsReference(PackageInterface $package, $path)
    {
        $parser = new VersionParser;
        $guesser = new VersionGuesser($this->config, $this->process, $parser);
        $dumper = new ArrayDumper;

        $packageConfig = $dumper->dump($package);
        if ($packageVersion = $guesser->guessVersion($packageConfig, $path)) {
            return $packageVersion['commit'];
        }
    }

    /**
     * Prompt the user to check if changes should be stashed/removed or the operation aborted
     *
     * @param  PackageInterface  $package
     * @param  string            $path
     * @param  bool              $update  if true (update) the changes can be stashed and reapplied after an update,
     *                                    if false (remove) the changes should be assumed to be lost if the operation is not aborted
     * @throws \RuntimeException in case the operation must be aborted
     */
    protected function cleanChanges(PackageInterface $package, $path, $update)
    {
        // the default implementation just fails if there are any changes, override in child classes to provide stash-ability
        if (null !== $this->getLocalChanges($package, $path)) {
            throw new \RuntimeException('Source directory ' . $path . ' has uncommitted changes.');
        }
    }

    /**
     * Guarantee that no changes have been made to the local copy
     *
     * @param  string            $path
     * @throws \RuntimeException in case the operation must be aborted or the patch does not apply cleanly
     */
    protected function reapplyChanges($path)
    {
    }

    /**
     * Downloads specific package into specific folder.
     *
     * @param PackageInterface $package package instance
     * @param string           $path    download path
     * @param string           $url     package url
     */
    abstract protected function doDownload(PackageInterface $package, $path, $url);

    /**
     * Updates specific package in specific folder from initial to target version.
     *
     * @param PackageInterface $initial initial package
     * @param PackageInterface $target  updated package
     * @param string           $path    download path
     * @param string           $url     package url
     */
    abstract protected function doUpdate(PackageInterface $initial, PackageInterface $target, $path, $url);

    /**
     * Fetches the commit logs between two commits
     *
     * @param  string $fromReference the source reference
     * @param  string $toReference   the target reference
     * @param  string $path          the package path
     * @return string
     */
    abstract protected function getCommitLogs($fromReference, $toReference, $path);

    /**
     * Checks if VCS metadata repository has been initialized
     * repository example: .git|.svn|.hg
     *
     * @param  string $path
     * @return bool
     */
    abstract protected function hasMetadataRepository($path);
}


<?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\Repository\Vcs;

use Composer\Config;
use Composer\Cache;
use Composer\Util\Hg as HgUtils;
use Composer\Util\ProcessExecutor;
use Composer\Util\Filesystem;
use Composer\IO\IOInterface;

/**
 * @author Per Bernhardt <plb@webfactory.de>
 */
class HgDriver extends VcsDriver
{
    protected $tags;
    protected $branches;
    protected $rootIdentifier;
    protected $repoDir;
    protected $infoCache = array();

    /**
     * {@inheritDoc}
     */
    public function initialize()
    {
        if (Filesystem::isLocalPath($this->url)) {
            $this->repoDir = $this->url;
        } else {
            if (!Cache::isUsable($this->config->get('cache-vcs-dir'))) {
                throw new \RuntimeException('HgDriver requires a usable cache directory, and it looks like you set it to be disabled');
            }

            $cacheDir = $this->config->get('cache-vcs-dir');
            $this->repoDir = $cacheDir . '/' . preg_replace('{[^a-z0-9]}i', '-', $this->url) . '/';

            $fs = new Filesystem();
            $fs->ensureDirectoryExists($cacheDir);

            if (!is_writable(dirname($this->repoDir))) {
                throw new \RuntimeException('Can not clone '.$this->url.' to access package information. The "'.$cacheDir.'" directory is not writable by the current user.');
            }

            // Ensure we are allowed to use this URL by config
            $this->config->prohibitUrlByConfig($this->url, $this->io);

            $hgUtils = new HgUtils($this->io, $this->config, $this->process);

            // update the repo if it is a valid hg repository
            if (is_dir($this->repoDir) && 0 === $this->process->execute('hg summary', $output, $this->repoDir)) {
                if (0 !== $this->process->execute('hg pull', $output, $this->repoDir)) {
                    $this->io->writeError('<error>Failed to update '.$this->url.', package information from this repository may be outdated ('.$this->process->getErrorOutput().')</error>');
                }
            } else {
                // clean up directory and do a fresh clone into it
                $fs->removeDirectory($this->repoDir);

                $command = function ($url) {
                    return sprintf('hg clone --noupdate %s %s', ProcessExecutor::escape($url), ProcessExecutor::escape($this->repoDir));
                };

                $hgUtils->runCommand($command, $this->url, $this->repoDir);
            }
        }

        $this->getTags();
        $this->getBranches();
    }

    /**
     * {@inheritDoc}
     */
    public function getRootIdentifier()
    {
        if (null === $this->rootIdentifier) {
            $this->process->execute(sprintf('hg tip --template "{node}"'), $output, $this->repoDir);
            $output = $this->process->splitLines($output);
            $this->rootIdentifier = $output[0];
        }

        return $this->rootIdentifier;
    }

    /**
     * {@inheritDoc}
     */
    public function getUrl()
    {
        return $this->url;
    }

    /**
     * {@inheritDoc}
     */
    public function getSource($identifier)
    {
        return array('type' => 'hg', 'url' => $this->getUrl(), 'reference' => $identifier);
    }

    /**
     * {@inheritDoc}
     */
    public function getDist($identifier)
    {
        return null;
    }

    /**
     * {@inheritdoc}
     */
    public function getFileContent($file, $identifier)
    {
        $resource = sprintf('hg cat -r %s %s', ProcessExecutor::escape($identifier), ProcessExecutor::escape($file));
        $this->process->execute($resource, $content, $this->repoDir);

        if (!trim($content)) {
            return;
        }

        return $content;
    }

    /**
     * {@inheritdoc}
     */
    public function getChangeDate($identifier)
    {
        $this->process->execute(
            sprintf(
                'hg log --template "{date|rfc3339date}" -r %s',
                ProcessExecutor::escape($identifier)
            ),
            $output,
            $this->repoDir
        );

        return new \DateTime(trim($output), new \DateTimeZone('UTC'));
    }

    /**
     * {@inheritDoc}
     */
    public function getTags()
    {
        if (null === $this->tags) {
            $tags = array();

            $this->process->execute('hg tags', $output, $this->repoDir);
            foreach ($this->process->splitLines($output) as $tag) {
                if ($tag && preg_match('(^([^\s]+)\s+\d+:(.*)$)', $tag, $match)) {
                    $tags[$match[1]] = $match[2];
                }
            }
            unset($tags['tip']);

            $this->tags = $tags;
        }

        return $this->tags;
    }

    /**
     * {@inheritDoc}
     */
    public function getBranches()
    {
        if (null === $this->branches) {
            $branches = array();
            $bookmarks = array();

            $this->process->execute('hg branches', $output, $this->repoDir);
            foreach ($this->process->splitLines($output) as $branch) {
                if ($branch && preg_match('(^([^\s]+)\s+\d+:([a-f0-9]+))', $branch, $match)) {
                    $branches[$match[1]] = $match[2];
                }
            }

            $this->process->execute('hg bookmarks', $output, $this->repoDir);
            foreach ($this->process->splitLines($output) as $branch) {
                if ($branch && preg_match('(^(?:[\s*]*)([^\s]+)\s+\d+:(.*)$)', $branch, $match)) {
                    $bookmarks[$match[1]] = $match[2];
                }
            }

            // Branches will have preference over bookmarks
            $this->branches = array_merge($bookmarks, $branches);
        }

        return $this->branches;
    }

    /**
     * {@inheritDoc}
     */
    public static function supports(IOInterface $io, Config $config, $url, $deep = false)
    {
        if (preg_match('#(^(?:https?|ssh)://(?:[^@]+@)?bitbucket.org|https://(?:.*?)\.kilnhg.com)#i', $url)) {
            return true;
        }

        // local filesystem
        if (Filesystem::isLocalPath($url)) {
            $url = Filesystem::getPlatformPath($url);
            if (!is_dir($url)) {
                return false;
            }

            $process = new ProcessExecutor($io);
            // check whether there is a hg repo in that path
            if ($process->execute('hg summary', $output, $url) === 0) {
                return true;
            }
        }

        if (!$deep) {
            return false;
        }

        $processExecutor = new ProcessExecutor($io);
        $exit = $processExecutor->execute(sprintf('hg identify %s', ProcessExecutor::escape($url)), $ignored);

        return $exit === 0;
    }
}


<?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\Installer;

use Composer\Package\PackageInterface;
use Composer\Downloader\DownloadManager;
use Composer\Repository\InstalledRepositoryInterface;
use Composer\Util\Filesystem;

/**
 * Project Installer is used to install a single package into a directory as
 * root project.
 *
 * @author Benjamin Eberlei <kontakt@beberlei.de>
 */
class ProjectInstaller implements InstallerInterface
{
    private $installPath;
    private $downloadManager;
    private $filesystem;

    public function __construct($installPath, DownloadManager $dm)
    {
        $this->installPath = rtrim(strtr($installPath, '\\', '/'), '/').'/';
        $this->downloadManager = $dm;
        $this->filesystem = new Filesystem;
    }

    /**
     * Decides if the installer supports the given type
     *
     * @param  string $packageType
     * @return bool
     */
    public function supports($packageType)
    {
        return true;
    }

    /**
     * {@inheritDoc}
     */
    public function isInstalled(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        return false;
    }

    /**
     * {@inheritDoc}
     */
    public function install(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        $installPath = $this->installPath;
        if (file_exists($installPath) && !$this->filesystem->isDirEmpty($installPath)) {
            throw new \InvalidArgumentException("Project directory $installPath is not empty.");
        }
        if (!is_dir($installPath)) {
            mkdir($installPath, 0777, true);
        }
        $this->downloadManager->download($package, $installPath);
    }

    /**
     * {@inheritDoc}
     */
    public function update(InstalledRepositoryInterface $repo, PackageInterface $initial, PackageInterface $target)
    {
        throw new \InvalidArgumentException("not supported");
    }

    /**
     * {@inheritDoc}
     */
    public function uninstall(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        throw new \InvalidArgumentException("not supported");
    }

    /**
     * Returns the installation path of a package
     *
     * @param  PackageInterface $package
     * @return string           path
     */
    public function getInstallPath(PackageInterface $package)
    {
        return $this->installPath;
    }
}


<?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\Package\Archiver;

use Composer\Downloader\DownloadManager;
use Composer\Package\PackageInterface;
use Composer\Package\RootPackageInterface;
use Composer\Util\Filesystem;
use Composer\Json\JsonFile;

/**
 * @author Matthieu Moquet <matthieu@moquet.net>
 * @author Till Klampaeckel <till@php.net>
 */
class ArchiveManager
{
    protected $downloadManager;

    protected $archivers = array();

    /**
     * @var bool
     */
    protected $overwriteFiles = true;

    /**
     * @param DownloadManager $downloadManager A manager used to download package sources
     */
    public function __construct(DownloadManager $downloadManager)
    {
        $this->downloadManager = $downloadManager;
    }

    /**
     * @param ArchiverInterface $archiver
     */
    public function addArchiver(ArchiverInterface $archiver)
    {
        $this->archivers[] = $archiver;
    }

    /**
     * Set whether existing archives should be overwritten
     *
     * @param bool $overwriteFiles New setting
     *
     * @return $this
     */
    public function setOverwriteFiles($overwriteFiles)
    {
        $this->overwriteFiles = $overwriteFiles;

        return $this;
    }

    /**
     * Generate a distinct filename for a particular version of a package.
     *
     * @param PackageInterface $package The package to get a name for
     *
     * @return string A filename without an extension
     */
    public function getPackageFilename(PackageInterface $package)
    {
        $nameParts = array(preg_replace('#[^a-z0-9-_]#i', '-', $package->getName()));

        if (preg_match('{^[a-f0-9]{40}$}', $package->getDistReference())) {
            array_push($nameParts, $package->getDistReference(), $package->getDistType());
        } else {
            array_push($nameParts, $package->getPrettyVersion(), $package->getDistReference());
        }

        if ($package->getSourceReference()) {
            $nameParts[] = substr(sha1($package->getSourceReference()), 0, 6);
        }

        $name = implode('-', array_filter($nameParts, function ($p) {
            return !empty($p);
        }));

        return str_replace('/', '-', $name);
    }

    /**
     * Create an archive of the specified package.
     *
     * @param  PackageInterface          $package       The package to archive
     * @param  string                    $format        The format of the archive (zip, tar, ...)
     * @param  string                    $targetDir     The directory where to build the archive
     * @param  string|null               $fileName      The relative file name to use for the archive, or null to generate
     *                                                  the package name. Note that the format will be appended to this name
     * @param  bool                      $ignoreFilters Ignore filters when looking for files in the package
     * @throws \InvalidArgumentException
     * @throws \RuntimeException
     * @return string                    The path of the created archive
     */
    public function archive(PackageInterface $package, $format, $targetDir, $fileName = null, $ignoreFilters = false)
    {
        if (empty($format)) {
            throw new \InvalidArgumentException('Format must be specified');
        }

        // Search for the most appropriate archiver
        $usableArchiver = null;
        foreach ($this->archivers as $archiver) {
            if ($archiver->supports($format, $package->getSourceType())) {
                $usableArchiver = $archiver;
                break;
            }
        }

        // Checks the format/source type are supported before downloading the package
        if (null === $usableArchiver) {
            throw new \RuntimeException(sprintf('No archiver found to support %s format', $format));
        }

        $filesystem = new Filesystem();
        if (null === $fileName) {
            $packageName = $this->getPackageFilename($package);
        } else {
            $packageName = $fileName;
        }

        // Archive filename
        $filesystem->ensureDirectoryExists($targetDir);
        $target = realpath($targetDir).'/'.$packageName.'.'.$format;
        $filesystem->ensureDirectoryExists(dirname($target));

        if (!$this->overwriteFiles && file_exists($target)) {
            return $target;
        }

        if ($package instanceof RootPackageInterface) {
            $sourcePath = realpath('.');
        } else {
            // Directory used to download the sources
            $sourcePath = sys_get_temp_dir().'/composer_archive'.uniqid();
            $filesystem->ensureDirectoryExists($sourcePath);

            try {
                // Download sources
                $this->downloadManager->download($package, $sourcePath);
            } catch (\Exception $e) {
                $filesystem->removeDirectory($sourcePath);
                throw  $e;
            }

            // Check exclude from downloaded composer.json
            if (file_exists($composerJsonPath = $sourcePath.'/composer.json')) {
                $jsonFile = new JsonFile($composerJsonPath);
                $jsonData = $jsonFile->read();
                if (!empty($jsonData['archive']['exclude'])) {
                    $package->setArchiveExcludes($jsonData['archive']['exclude']);
                }
            }
        }

        // Create the archive
        $tempTarget = sys_get_temp_dir().'/composer_archive'.uniqid().'.'.$format;
        $filesystem->ensureDirectoryExists(dirname($tempTarget));

        $archivePath = $usableArchiver->archive($sourcePath, $tempTarget, $format, $package->getArchiveExcludes(), $ignoreFilters);
        $filesystem->rename($archivePath, $target);

        // cleanup temporary download
        if (!$package instanceof RootPackageInterface) {
            $filesystem->removeDirectory($sourcePath);
        }
        $filesystem->remove($tempTarget);

        return $target;
    }
}


<?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\Question;

use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Question\Question;

/**
 * Represents a yes/no question
 * Enforces strict responses rather than non-standard answers counting as default
 * Based on Symfony\Component\Console\Question\ConfirmationQuestion
 *
 * @author Theo Tonge <theo@theotonge.co.uk>
 */
class StrictConfirmationQuestion extends Question
{
    private $trueAnswerRegex;
    private $falseAnswerRegex;

    /**
     * Constructor.s
     *
     * @param string $question         The question to ask to the user
     * @param bool   $default          The default answer to return, true or false
     * @param string $trueAnswerRegex  A regex to match the "yes" answer
     * @param string $falseAnswerRegex A regex to match the "no" answer
     */
    public function __construct($question, $default = true, $trueAnswerRegex = '/^y(?:es)?$/i', $falseAnswerRegex = '/^no?$/i')
    {
        parent::__construct($question, (bool) $default);

        $this->trueAnswerRegex = $trueAnswerRegex;
        $this->falseAnswerRegex = $falseAnswerRegex;
        $this->setNormalizer($this->getDefaultNormalizer());
        $this->setValidator($this->getDefaultValidator());
    }

    /**
     * Returns the default answer normalizer.
     *
     * @return callable
     */
    private function getDefaultNormalizer()
    {
        $default = $this->getDefault();
        $trueRegex = $this->trueAnswerRegex;
        $falseRegex = $this->falseAnswerRegex;

        return function ($answer) use ($default, $trueRegex, $falseRegex) {
            if (is_bool($answer)) {
                return $answer;
            }
            if (empty($answer) && !empty($default)) {
                return $default;
            }

            if (preg_match($trueRegex, $answer)) {
                return true;
            }

            if (preg_match($falseRegex, $answer)) {
                return false;
            }

            return null;
        };
    }

    /**
     * Returns the default answer validator.
     *
     * @return callable
     */
    private function getDefaultValidator()
    {
        return function ($answer) {
            if (!is_bool($answer)) {
                throw new InvalidArgumentException('Please answer yes, y, no, or n.');
            }

            return $answer;
        };
    }
}


<?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\Package\Archiver;

use ZipArchive;
use Composer\Util\Filesystem;

/**
 * @author Jan Prieser <jan@prieser.net>
 */
class ZipArchiver implements ArchiverInterface
{
    protected static $formats = array(
        'zip' => 1,
    );

    /**
     * {@inheritdoc}
     */
    public function archive($sources, $target, $format, array $excludes = array(), $ignoreFilters = false)
    {
        $fs = new Filesystem();
        $sources = $fs->normalizePath($sources);

        $zip = new ZipArchive();
        $res = $zip->open($target, ZipArchive::CREATE);
        if ($res === true) {
            $files = new ArchivableFilesFinder($sources, $excludes, $ignoreFilters);
            foreach ($files as $file) {
                /** @var \SplFileInfo $file */
                $filepath = strtr($file->getPath()."/".$file->getFilename(), '\\', '/');
                $localname = str_replace($sources.'/', '', $filepath);
                if ($file->isDir()) {
                    $zip->addEmptyDir($localname);
                } else {
                    $zip->addFile($filepath, $localname);
                }
            }
            if ($zip->close()) {
                return $target;
            }
        }
        $message = sprintf(
            "Could not create archive '%s' from '%s': %s",
            $target,
            $sources,
            $zip->getStatusString()
        );
        throw new \RuntimeException($message);
    }

    /**
     * {@inheritdoc}
     */
    public function supports($format, $sourceType)
    {
        return isset(static::$formats[$format]) && $this->compressionAvailable();
    }

    private function compressionAvailable()
    {
        return class_exists('ZipArchive');
    }
}


<?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\DependencyResolver;

use Composer\Package\PackageInterface;
use Composer\Package\Link;

/**
 * @author Nils Adermann <naderman@naderman.de>
 */
class Rule2Literals extends Rule
{
    protected $literal1;
    protected $literal2;

    /**
     * @param int                   $literal1
     * @param int                   $literal2
     * @param int                   $reason     A RULE_* constant describing the reason for generating this rule
     * @param Link|PackageInterface $reasonData
     * @param array                 $job        The job this rule was created from
     */
    public function __construct($literal1, $literal2, $reason, $reasonData, $job = null)
    {
        parent::__construct($reason, $reasonData, $job);

        if ($literal1 < $literal2) {
            $this->literal1 = $literal1;
            $this->literal2 = $literal2;
        } else {
            $this->literal1 = $literal2;
            $this->literal2 = $literal1;
        }
    }

    public function getLiterals()
    {
        return array($this->literal1, $this->literal2);
    }

    public function getHash()
    {
        return $this->literal1.','.$this->literal2;
    }

    /**
     * Checks if this rule is equal to another one
     *
     * Ignores whether either of the rules is disabled.
     *
     * @param  Rule $rule The rule to check against
     * @return bool Whether the rules are equal
     */
    public function equals(Rule $rule)
    {
        // specialized fast-case
        if ($rule instanceof self) {
            if ($this->literal1 !== $rule->literal1) {
                return false;
            }

            if ($this->literal2 !== $rule->literal2) {
                return false;
            }

            return true;
        }

        $literals = $rule->getLiterals();
        if (2 != count($literals)) {
            return false;
        }

        if ($this->literal1 !== $literals[0]) {
            return false;
        }

        if ($this->literal2 !== $literals[1]) {
            return false;
        }

        return true;
    }

    public function isAssertion()
    {
        return false;
    }

    /**
     * Formats a rule as a string of the format (Literal1|Literal2|...)
     *
     * @return string
     */
    public function __toString()
    {
        $result = $this->isDisabled() ? 'disabled(' : '(';

        $result .= $this->literal1 . '|' . $this->literal2 . ')';

        return $result;
    }
}


<?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\Json;

use JsonSchema\Validator;
use Seld\JsonLint\JsonParser;
use Seld\JsonLint\ParsingException;
use Composer\Util\RemoteFilesystem;
use Composer\IO\IOInterface;
use Composer\Downloader\TransportException;

/**
 * Reads/writes json files.
 *
 * @author Konstantin Kudryashiv <ever.zet@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class JsonFile
{
    const LAX_SCHEMA = 1;
    const STRICT_SCHEMA = 2;

    const JSON_UNESCAPED_SLASHES = 64;
    const JSON_PRETTY_PRINT = 128;
    const JSON_UNESCAPED_UNICODE = 256;

    const COMPOSER_SCHEMA_PATH = '/../../../res/composer-schema.json';

    private $path;
    private $rfs;
    private $io;

    /**
     * Initializes json file reader/parser.
     *
     * @param  string                    $path path to a lockfile
     * @param  RemoteFilesystem          $rfs  required for loading http/https json files
     * @param  IOInterface               $io
     * @throws \InvalidArgumentException
     */
    public function __construct($path, RemoteFilesystem $rfs = null, IOInterface $io = null)
    {
        $this->path = $path;

        if (null === $rfs && preg_match('{^https?://}i', $path)) {
            throw new \InvalidArgumentException('http urls require a RemoteFilesystem instance to be passed');
        }
        $this->rfs = $rfs;
        $this->io = $io;
    }

    /**
     * @return string
     */
    public function getPath()
    {
        return $this->path;
    }

    /**
     * Checks whether json file exists.
     *
     * @return bool
     */
    public function exists()
    {
        return is_file($this->path);
    }

    /**
     * Reads json file.
     *
     * @throws \RuntimeException
     * @return mixed
     */
    public function read()
    {
        try {
            if ($this->rfs) {
                $json = $this->rfs->getContents($this->path, $this->path, false);
            } else {
                if ($this->io && $this->io->isDebug()) {
                    $this->io->writeError('Reading ' . $this->path);
                }
                $json = file_get_contents($this->path);
            }
        } catch (TransportException $e) {
            throw new \RuntimeException($e->getMessage(), 0, $e);
        } catch (\Exception $e) {
            throw new \RuntimeException('Could not read '.$this->path."\n\n".$e->getMessage());
        }

        return static::parseJson($json, $this->path);
    }

    /**
     * Writes json file.
     *
     * @param  array                                $hash    writes hash into json file
     * @param  int                                  $options json_encode options (defaults to JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE)
     * @throws \UnexpectedValueException|\Exception
     */
    public function write(array $hash, $options = 448)
    {
        $dir = dirname($this->path);
        if (!is_dir($dir)) {
            if (file_exists($dir)) {
                throw new \UnexpectedValueException(
                    $dir.' exists and is not a directory.'
                );
            }
            if (!@mkdir($dir, 0777, true)) {
                throw new \UnexpectedValueException(
                    $dir.' does not exist and could not be created.'
                );
            }
        }

        $retries = 3;
        while ($retries--) {
            try {
                file_put_contents($this->path, static::encode($hash, $options). ($options & self::JSON_PRETTY_PRINT ? "\n" : ''));
                break;
            } catch (\Exception $e) {
                if ($retries) {
                    usleep(500000);
                    continue;
                }

                throw $e;
            }
        }
    }

    /**
     * Validates the schema of the current json file according to composer-schema.json rules
     *
     * @param  int                     $schema a JsonFile::*_SCHEMA constant
     * @param  string|null             $schemaFile a path to the schema file
     * @throws JsonValidationException
     * @return bool                    true on success
     */
    public function validateSchema($schema = self::STRICT_SCHEMA, $schemaFile = null)
    {
        $content = file_get_contents($this->path);
        $data = json_decode($content);

        if (null === $data && 'null' !== $content) {
            self::validateSyntax($content, $this->path);
        }

        if (null === $schemaFile) {
            $schemaFile = __DIR__ . self::COMPOSER_SCHEMA_PATH;
        }

        // Prepend with file:// only when not using a special schema already (e.g. in the phar)
        if (false === strpos($schemaFile, '://')) {
            $schemaFile = 'file://' . $schemaFile;
        }

        $schemaData = (object) array('$ref' => $schemaFile);

        if ($schema === self::LAX_SCHEMA) {
            $schemaData->additionalProperties = true;
            $schemaData->required = array();
        }

        $validator = new Validator();
        $validator->check($data, $schemaData);

        // TODO add more validation like check version constraints and such, perhaps build that into the arrayloader?

        if (!$validator->isValid()) {
            $errors = array();
            foreach ((array) $validator->getErrors() as $error) {
                $errors[] = ($error['property'] ? $error['property'].' : ' : '').$error['message'];
            }
            throw new JsonValidationException('"'.$this->path.'" does not match the expected JSON schema', $errors);
        }

        return true;
    }

    /**
     * Encodes an array into (optionally pretty-printed) JSON
     *
     * @param  mixed  $data    Data to encode into a formatted JSON string
     * @param  int    $options json_encode options (defaults to JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE)
     * @return string Encoded json
     */
    public static function encode($data, $options = 448)
    {
        if (PHP_VERSION_ID >= 50400) {
            $json = json_encode($data, $options);
            if (false === $json) {
                self::throwEncodeError(json_last_error());
            }

            //  compact brackets to follow recent php versions
            if (PHP_VERSION_ID < 50428 || (PHP_VERSION_ID >= 50500 && PHP_VERSION_ID < 50512) || (defined('JSON_C_VERSION') && version_compare(phpversion('json'), '1.3.6', '<'))) {
                $json = preg_replace('/\[\s+\]/', '[]', $json);
                $json = preg_replace('/\{\s+\}/', '{}', $json);
            }

            return $json;
        }

        $json = json_encode($data);
        if (false === $json) {
            self::throwEncodeError(json_last_error());
        }

        $prettyPrint = (bool) ($options & self::JSON_PRETTY_PRINT);
        $unescapeUnicode = (bool) ($options & self::JSON_UNESCAPED_UNICODE);
        $unescapeSlashes = (bool) ($options & self::JSON_UNESCAPED_SLASHES);

        if (!$prettyPrint && !$unescapeUnicode && !$unescapeSlashes) {
            return $json;
        }

        return JsonFormatter::format($json, $unescapeUnicode, $unescapeSlashes);
    }

    /**
     * Throws an exception according to a given code with a customized message
     *
     * @param  int               $code return code of json_last_error function
     * @throws \RuntimeException
     */
    private static function throwEncodeError($code)
    {
        switch ($code) {
            case JSON_ERROR_DEPTH:
                $msg = 'Maximum stack depth exceeded';
                break;
            case JSON_ERROR_STATE_MISMATCH:
                $msg = 'Underflow or the modes mismatch';
                break;
            case JSON_ERROR_CTRL_CHAR:
                $msg = 'Unexpected control character found';
                break;
            case JSON_ERROR_UTF8:
                $msg = 'Malformed UTF-8 characters, possibly incorrectly encoded';
                break;
            default:
                $msg = 'Unknown error';
        }

        throw new \RuntimeException('JSON encoding failed: '.$msg);
    }

    /**
     * Parses json string and returns hash.
     *
     * @param string $json json string
     * @param string $file the json file
     *
     * @return mixed
     */
    public static function parseJson($json, $file = null)
    {
        if (null === $json) {
            return;
        }
        $data = json_decode($json, true);
        if (null === $data && JSON_ERROR_NONE !== json_last_error()) {
            self::validateSyntax($json, $file);
        }

        return $data;
    }

    /**
     * Validates the syntax of a JSON string
     *
     * @param  string                    $json
     * @param  string                    $file
     * @throws \UnexpectedValueException
     * @throws ParsingException
     * @return bool                      true on success
     */
    protected static function validateSyntax($json, $file = null)
    {
        $parser = new JsonParser();
        $result = $parser->lint($json);
        if (null === $result) {
            if (defined('JSON_ERROR_UTF8') && JSON_ERROR_UTF8 === json_last_error()) {
                throw new \UnexpectedValueException('"'.$file.'" is not UTF-8, could not parse as JSON');
            }

            return true;
        }

        throw new ParsingException('"'.$file.'" does not contain valid JSON'."\n".$result->getMessage(), $result->getDetails());
    }
}


<?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\Json\JsonFile;
use Composer\Spdx\SpdxLicenses;
use Composer\CaBundle\CaBundle;
use Symfony\Component\Finder\Finder;
use Symfony\Component\Process\Process;
use Seld\PharUtils\Timestamps;

/**
 * The Compiler class compiles composer into a phar
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class Compiler
{
    private $version;
    private $branchAliasVersion = '';
    private $versionDate;

    /**
     * Compiles composer into a single phar file
     *
     * @param  string            $pharFile The full path to the file to create
     * @throws \RuntimeException
     */
    public function compile($pharFile = 'composer.phar')
    {
        if (file_exists($pharFile)) {
            unlink($pharFile);
        }

        $process = new Process('git log --pretty="%H" -n1 HEAD', __DIR__);
        if ($process->run() != 0) {
            throw new \RuntimeException('Can\'t run git log. You must ensure to run compile from composer git repository clone and that git binary is available.');
        }
        $this->version = trim($process->getOutput());

        $process = new Process('git log -n1 --pretty=%ci HEAD', __DIR__);
        if ($process->run() != 0) {
            throw new \RuntimeException('Can\'t run git log. You must ensure to run compile from composer git repository clone and that git binary is available.');
        }

        $this->versionDate = new \DateTime(trim($process->getOutput()));
        $this->versionDate->setTimezone(new \DateTimeZone('UTC'));

        $process = new Process('git describe --tags --exact-match HEAD');
        if ($process->run() == 0) {
            $this->version = trim($process->getOutput());
        } else {
            // get branch-alias defined in composer.json for dev-master (if any)
            $localConfig = __DIR__.'/../../composer.json';
            $file = new JsonFile($localConfig);
            $localConfig = $file->read();
            if (isset($localConfig['extra']['branch-alias']['dev-master'])) {
                $this->branchAliasVersion = $localConfig['extra']['branch-alias']['dev-master'];
            }
        }

        $phar = new \Phar($pharFile, 0, 'composer.phar');
        $phar->setSignatureAlgorithm(\Phar::SHA1);

        $phar->startBuffering();

        $finderSort = function ($a, $b) {
            return strcmp(strtr($a->getRealPath(), '\\', '/'), strtr($b->getRealPath(), '\\', '/'));
        };

        $finder = new Finder();
        $finder->files()
            ->ignoreVCS(true)
            ->name('*.php')
            ->notName('Compiler.php')
            ->notName('ClassLoader.php')
            ->in(__DIR__.'/..')
            ->sort($finderSort)
        ;

        foreach ($finder as $file) {
            $this->addFile($phar, $file);
        }
        $this->addFile($phar, new \SplFileInfo(__DIR__ . '/Autoload/ClassLoader.php'), false);

        $finder = new Finder();
        $finder->files()
            ->name('*.json')
            ->in(__DIR__.'/../../res')
            ->in(SpdxLicenses::getResourcesDir())
            ->sort($finderSort)
        ;

        foreach ($finder as $file) {
            $this->addFile($phar, $file, false);
        }
        $this->addFile($phar, new \SplFileInfo(__DIR__ . '/../../vendor/symfony/console/Resources/bin/hiddeninput.exe'), false);

        $finder = new Finder();
        $finder->files()
            ->ignoreVCS(true)
            ->name('*.php')
            ->name('LICENSE')
            ->exclude('Tests')
            ->exclude('tests')
            ->exclude('docs')
            ->in(__DIR__.'/../../vendor/symfony/')
            ->in(__DIR__.'/../../vendor/seld/jsonlint/')
            ->in(__DIR__.'/../../vendor/justinrainbow/json-schema/')
            ->in(__DIR__.'/../../vendor/composer/spdx-licenses/')
            ->in(__DIR__.'/../../vendor/composer/semver/')
            ->in(__DIR__.'/../../vendor/composer/ca-bundle/')
            ->in(__DIR__.'/../../vendor/composer/xdebug-handler/')
            ->in(__DIR__.'/../../vendor/psr/')
            ->sort($finderSort)
        ;

        foreach ($finder as $file) {
            $this->addFile($phar, $file);
        }

        $this->addFile($phar, new \SplFileInfo(__DIR__.'/../../vendor/autoload.php'));
        $this->addFile($phar, new \SplFileInfo(__DIR__.'/../../vendor/composer/autoload_namespaces.php'));
        $this->addFile($phar, new \SplFileInfo(__DIR__.'/../../vendor/composer/autoload_psr4.php'));
        $this->addFile($phar, new \SplFileInfo(__DIR__.'/../../vendor/composer/autoload_classmap.php'));
        $this->addFile($phar, new \SplFileInfo(__DIR__.'/../../vendor/composer/autoload_files.php'));
        $this->addFile($phar, new \SplFileInfo(__DIR__.'/../../vendor/composer/autoload_real.php'));
        $this->addFile($phar, new \SplFileInfo(__DIR__.'/../../vendor/composer/autoload_static.php'));
        if (file_exists(__DIR__.'/../../vendor/composer/include_paths.php')) {
            $this->addFile($phar, new \SplFileInfo(__DIR__.'/../../vendor/composer/include_paths.php'));
        }
        $this->addFile($phar, new \SplFileInfo(__DIR__.'/../../vendor/composer/ClassLoader.php'));

        $this->addFile($phar, new \SplFileInfo(CaBundle::getBundledCaBundlePath()), false);

        $this->addComposerBin($phar);

        // Stubs
        $phar->setStub($this->getStub());

        $phar->stopBuffering();

        // disabled for interoperability with systems without gzip ext
        // $phar->compressFiles(\Phar::GZ);

        $this->addFile($phar, new \SplFileInfo(__DIR__.'/../../LICENSE'), false);

        unset($phar);

        // re-sign the phar with reproducible timestamp / signature
        $util = new Timestamps($pharFile);
        $util->updateTimestamps($this->versionDate);
        $util->save($pharFile, \Phar::SHA1);
    }

    /**
     * @param  \SplFileInfo $file
     * @return string
     */
    private function getRelativeFilePath($file)
    {
        $realPath = $file->getRealPath();
        $pathPrefix = dirname(dirname(__DIR__)).DIRECTORY_SEPARATOR;

        $pos = strpos($realPath, $pathPrefix);
        $relativePath = ($pos !== false) ? substr_replace($realPath, '', $pos, strlen($pathPrefix)) : $realPath;

        return strtr($relativePath, '\\', '/');
    }

    private function addFile($phar, $file, $strip = true)
    {
        $path = $this->getRelativeFilePath($file);
        $content = file_get_contents($file);
        if ($strip) {
            $content = $this->stripWhitespace($content);
        } elseif ('LICENSE' === basename($file)) {
            $content = "\n".$content."\n";
        }

        if ($path === 'src/Composer/Composer.php') {
            $content = str_replace('@package_version@', $this->version, $content);
            $content = str_replace('@package_branch_alias_version@', $this->branchAliasVersion, $content);
            $content = str_replace('@release_date@', $this->versionDate->format('Y-m-d H:i:s'), $content);
            $content = preg_replace('{SOURCE_VERSION = \'[^\']+\';}', 'SOURCE_VERSION = \'\';', $content);
        }

        $phar->addFromString($path, $content);
    }

    private function addComposerBin($phar)
    {
        $content = file_get_contents(__DIR__.'/../../bin/composer');
        $content = preg_replace('{^#!/usr/bin/env php\s*}', '', $content);
        $phar->addFromString('bin/composer', $content);
    }

    /**
     * Removes whitespace from a PHP source string while preserving line numbers.
     *
     * @param  string $source A PHP string
     * @return string The PHP string with the whitespace removed
     */
    private function stripWhitespace($source)
    {
        if (!function_exists('token_get_all')) {
            return $source;
        }

        $output = '';
        foreach (token_get_all($source) as $token) {
            if (is_string($token)) {
                $output .= $token;
            } elseif (in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) {
                $output .= str_repeat("\n", substr_count($token[1], "\n"));
            } elseif (T_WHITESPACE === $token[0]) {
                // reduce wide spaces
                $whitespace = preg_replace('{[ \t]+}', ' ', $token[1]);
                // normalize newlines to \n
                $whitespace = preg_replace('{(?:\r\n|\r|\n)}', "\n", $whitespace);
                // trim leading spaces
                $whitespace = preg_replace('{\n +}', "\n", $whitespace);
                $output .= $whitespace;
            } else {
                $output .= $token[1];
            }
        }

        return $output;
    }

    private function getStub()
    {
        $stub = <<<'EOF'
#!/usr/bin/env 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 that is located at the bottom of this file.
 */

// Avoid APC causing random fatal errors per https://github.com/composer/composer/issues/264
if (extension_loaded('apc') && filter_var(ini_get('apc.enable_cli'), FILTER_VALIDATE_BOOLEAN) && filter_var(ini_get('apc.cache_by_default'), FILTER_VALIDATE_BOOLEAN)) {
    if (version_compare(phpversion('apc'), '3.0.12', '>=')) {
        ini_set('apc.cache_by_default', 0);
    } else {
        fwrite(STDERR, 'Warning: APC <= 3.0.12 may cause fatal errors when running composer commands.'.PHP_EOL);
        fwrite(STDERR, 'Update APC, or set apc.enable_cli or apc.cache_by_default to 0 in your php.ini.'.PHP_EOL);
    }
}

Phar::mapPhar('composer.phar');

EOF;

        // add warning once the phar is older than 60 days
        if (preg_match('{^[a-f0-9]+$}', $this->version)) {
            $warningTime = $this->versionDate->format('U') + 60 * 86400;
            $stub .= "define('COMPOSER_DEV_WARNING_TIME', $warningTime);\n";
        }

        return $stub . <<<'EOF'
require 'phar://composer.phar/bin/composer';

__HALT_COMPILER();
EOF;
    }
}


<?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\Package;

use Composer\Repository\RepositoryInterface;
use Composer\Repository\PlatformRepository;

/**
 * Base class for packages providing name storage and default match implementation
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
abstract class BasePackage implements PackageInterface
{
    public static $supportedLinkTypes = array(
        'require' => array('description' => 'requires', 'method' => 'requires'),
        'conflict' => array('description' => 'conflicts', 'method' => 'conflicts'),
        'provide' => array('description' => 'provides', 'method' => 'provides'),
        'replace' => array('description' => 'replaces', 'method' => 'replaces'),
        'require-dev' => array('description' => 'requires (for development)', 'method' => 'devRequires'),
    );

    const STABILITY_STABLE = 0;
    const STABILITY_RC = 5;
    const STABILITY_BETA = 10;
    const STABILITY_ALPHA = 15;
    const STABILITY_DEV = 20;

    public static $stabilities = array(
        'stable' => self::STABILITY_STABLE,
        'RC' => self::STABILITY_RC,
        'beta' => self::STABILITY_BETA,
        'alpha' => self::STABILITY_ALPHA,
        'dev' => self::STABILITY_DEV,
    );

    /**
     * READ-ONLY: The package id, public for fast access in dependency solver
     * @var int
     */
    public $id;
    /** @var string */
    protected $name;
    /** @var string */
    protected $prettyName;
    /** @var RepositoryInterface */
    protected $repository;
    /** @var array */
    protected $transportOptions = array();

    /**
     * All descendants' constructors should call this parent constructor
     *
     * @param string $name The package's name
     */
    public function __construct($name)
    {
        $this->prettyName = $name;
        $this->name = strtolower($name);
        $this->id = -1;
    }

    /**
     * {@inheritDoc}
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * {@inheritDoc}
     */
    public function getPrettyName()
    {
        return $this->prettyName;
    }

    /**
     * {@inheritDoc}
     */
    public function getNames()
    {
        $names = array(
            $this->getName() => true,
        );

        foreach ($this->getProvides() as $link) {
            $names[$link->getTarget()] = true;
        }

        foreach ($this->getReplaces() as $link) {
            $names[$link->getTarget()] = true;
        }

        return array_keys($names);
    }

    /**
     * {@inheritDoc}
     */
    public function setId($id)
    {
        $this->id = $id;
    }

    /**
     * {@inheritDoc}
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * {@inheritDoc}
     */
    public function setRepository(RepositoryInterface $repository)
    {
        if ($this->repository && $repository !== $this->repository) {
            throw new \LogicException('A package can only be added to one repository');
        }
        $this->repository = $repository;
    }

    /**
     * {@inheritDoc}
     */
    public function getRepository()
    {
        return $this->repository;
    }

    /**
     * {@inheritDoc}
     */
    public function getTransportOptions()
    {
        return $this->transportOptions;
    }

    /**
     * Configures the list of options to download package dist files
     *
     * @param array $options
     */
    public function setTransportOptions(array $options)
    {
        $this->transportOptions = $options;
    }

    /**
     * checks if this package is a platform package
     *
     * @return bool
     */
    public function isPlatform()
    {
        return $this->getRepository() instanceof PlatformRepository;
    }

    /**
     * Returns package unique name, constructed from name, version and release type.
     *
     * @return string
     */
    public function getUniqueName()
    {
        return $this->getName().'-'.$this->getVersion();
    }

    public function equals(PackageInterface $package)
    {
        $self = $this;
        if ($this instanceof AliasPackage) {
            $self = $this->getAliasOf();
        }
        if ($package instanceof AliasPackage) {
            $package = $package->getAliasOf();
        }

        return $package === $self;
    }

    /**
     * Converts the package into a readable and unique string
     *
     * @return string
     */
    public function __toString()
    {
        return $this->getUniqueName();
    }

    public function getPrettyString()
    {
        return $this->getPrettyName().' '.$this->getPrettyVersion();
    }

    /**
     * {@inheritDoc}
     */
    public function getFullPrettyVersion($truncate = true)
    {
        if (!$this->isDev() || !in_array($this->getSourceType(), array('hg', 'git'))) {
            return $this->getPrettyVersion();
        }

        // if source reference is a sha1 hash -- truncate
        if ($truncate && strlen($this->getSourceReference()) === 40) {
            return $this->getPrettyVersion() . ' ' . substr($this->getSourceReference(), 0, 7);
        }

        return $this->getPrettyVersion() . ' ' . $this->getSourceReference();
    }

    public function getStabilityPriority()
    {
        return self::$stabilities[$this->getStability()];
    }

    public function __clone()
    {
        $this->repository = null;
        $this->id = -1;
    }

    /**
     * Build a regexp from a package name, expanding * globs as required
     *
     * @param  string $whiteListedPattern
     * @param  bool $wrap Wrap the cleaned string by the given string
     * @return string
     */
    public static function packageNameToRegexp($whiteListedPattern, $wrap = '{^%s$}i')
    {
        $cleanedWhiteListedPattern = str_replace('\\*', '.*', preg_quote($whiteListedPattern));

        return sprintf($wrap, $cleanedWhiteListedPattern);
    }
}


<?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\Package\Archiver;

use Symfony\Component\Finder;

/**
 * @author Nils Adermann <naderman@naderman.de>
 */
abstract class BaseExcludeFilter
{
    /**
     * @var string
     */
    protected $sourcePath;

    /**
     * @var array
     */
    protected $excludePatterns;

    /**
     * @param string $sourcePath Directory containing sources to be filtered
     */
    public function __construct($sourcePath)
    {
        $this->sourcePath = $sourcePath;
        $this->excludePatterns = array();
    }

    /**
     * Checks the given path against all exclude patterns in this filter
     *
     * Negated patterns overwrite exclude decisions of previous filters.
     *
     * @param string $relativePath The file's path relative to the sourcePath
     * @param bool   $exclude      Whether a previous filter wants to exclude this file
     *
     * @return bool Whether the file should be excluded
     */
    public function filter($relativePath, $exclude)
    {
        foreach ($this->excludePatterns as $patternData) {
            list($pattern, $negate, $stripLeadingSlash) = $patternData;

            if ($stripLeadingSlash) {
                $path = substr($relativePath, 1);
            } else {
                $path = $relativePath;
            }

            if (preg_match($pattern, $path)) {
                $exclude = !$negate;
            }
        }

        return $exclude;
    }

    /**
     * Processes a file containing exclude rules of different formats per line
     *
     * @param array    $lines      A set of lines to be parsed
     * @param callable $lineParser The parser to be used on each line
     *
     * @return array Exclude patterns to be used in filter()
     */
    protected function parseLines(array $lines, $lineParser)
    {
        return array_filter(
            array_map(
                function ($line) use ($lineParser) {
                    $line = trim($line);

                    if (!$line || 0 === strpos($line, '#')) {
                        return null;
                    }

                    return call_user_func($lineParser, $line);
                },
                $lines
            ),
            function ($pattern) {
                return $pattern !== null;
            }
        );
    }

    /**
     * Generates a set of exclude patterns for filter() from gitignore rules
     *
     * @param array $rules A list of exclude rules in gitignore syntax
     *
     * @return array Exclude patterns
     */
    protected function generatePatterns($rules)
    {
        $patterns = array();
        foreach ($rules as $rule) {
            $patterns[] = $this->generatePattern($rule);
        }

        return $patterns;
    }

    /**
     * Generates an exclude pattern for filter() from a gitignore rule
     *
     * @param string $rule An exclude rule in gitignore syntax
     *
     * @return array An exclude pattern
     */
    protected function generatePattern($rule)
    {
        $negate = false;
        $pattern = '{';

        if (strlen($rule) && $rule[0] === '!') {
            $negate = true;
            $rule = substr($rule, 1);
        }

        if (strlen($rule) && $rule[0] === '/') {
            $pattern .= '^/';
            $rule = substr($rule, 1);
        } elseif (strlen($rule) - 1 === strpos($rule, '/')) {
            $pattern .= '/';
            $rule = substr($rule, 0, -1);
        } elseif (false === strpos($rule, '/')) {
            $pattern .= '/';
        }

        // remove delimiters as well as caret (^) and dollar sign ($) from the regex
        $pattern .= substr(Finder\Glob::toRegex($rule), 2, -2) . '(?=$|/)';

        return array($pattern . '}', $negate, false);
    }
}


<?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\Command;

use Composer\DependencyResolver\Pool;
use Composer\Factory;
use Composer\Json\JsonFile;
use Composer\Package\BasePackage;
use Composer\Package\Version\VersionParser;
use Composer\Package\Version\VersionSelector;
use Composer\Repository\CompositeRepository;
use Composer\Repository\PlatformRepository;
use Composer\Repository\RepositoryFactory;
use Composer\Util\ProcessExecutor;
use Symfony\Component\Console\Input\ArrayInput;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Process\ExecutableFinder;
use Symfony\Component\Process\Process;

/**
 * @author Justin Rainbow <justin.rainbow@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class InitCommand extends BaseCommand
{
    /** @var CompositeRepository */
    protected $repos;

    /** @var array */
    private $gitConfig;

    /** @var Pool[] */
    private $pools;

    /**
     * {@inheritdoc}
     */
    protected function configure()
    {
        $this
            ->setName('init')
            ->setDescription('Creates a basic composer.json file in current directory.')
            ->setDefinition(array(
                new InputOption('name', null, InputOption::VALUE_REQUIRED, 'Name of the package'),
                new InputOption('description', null, InputOption::VALUE_REQUIRED, 'Description of package'),
                new InputOption('author', null, InputOption::VALUE_REQUIRED, 'Author name of package'),
                // new InputOption('version', null, InputOption::VALUE_NONE, 'Version of package'),
                new InputOption('type', null, InputOption::VALUE_OPTIONAL, 'Type of package (e.g. library, project, metapackage, composer-plugin)'),
                new InputOption('homepage', null, InputOption::VALUE_REQUIRED, 'Homepage of package'),
                new InputOption('require', null, InputOption::VALUE_IS_ARRAY | InputOption::VALUE_REQUIRED, 'Package to require with a version constraint, e.g. foo/bar:1.0.0 or foo/bar=1.0.0 or "foo/bar 1.0.0"'),
                new InputOption('require-dev', null, InputOption::VALUE_IS_ARRAY | InputOption::VALUE_REQUIRED, 'Package to require for development with a version constraint, e.g. foo/bar:1.0.0 or foo/bar=1.0.0 or "foo/bar 1.0.0"'),
                new InputOption('stability', 's', InputOption::VALUE_REQUIRED, 'Minimum stability (empty or one of: '.implode(', ', array_keys(BasePackage::$stabilities)).')'),
                new InputOption('license', 'l', InputOption::VALUE_REQUIRED, 'License of package'),
                new InputOption('repository', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Add custom repositories, either by URL or using JSON arrays'),
            ))
            ->setHelp(
                <<<EOT
The <info>init</info> command creates a basic composer.json file
in the current directory.

<info>php composer.phar init</info>

Read more at https://getcomposer.org/doc/03-cli.md#init
EOT
            )
        ;
    }

    /**
     * {@inheritdoc}
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $io = $this->getIO();

        $whitelist = array('name', 'description', 'author', 'type', 'homepage', 'require', 'require-dev', 'stability', 'license');
        $options = array_filter(array_intersect_key($input->getOptions(), array_flip($whitelist)));

        if (isset($options['author'])) {
            $options['authors'] = $this->formatAuthors($options['author']);
            unset($options['author']);
        }

        $repositories = $input->getOption('repository');
        if ($repositories) {
            $config = Factory::createConfig($io);
            foreach ($repositories as $repo) {
                $options['repositories'][] = RepositoryFactory::configFromString($io, $config, $repo);
            }
        }

        if (isset($options['stability'])) {
            $options['minimum-stability'] = $options['stability'];
            unset($options['stability']);
        }

        $options['require'] = isset($options['require']) ? $this->formatRequirements($options['require']) : new \stdClass;
        if (array() === $options['require']) {
            $options['require'] = new \stdClass;
        }

        if (isset($options['require-dev'])) {
            $options['require-dev'] = $this->formatRequirements($options['require-dev']);
            if (array() === $options['require-dev']) {
                $options['require-dev'] = new \stdClass;
            }
        }

        $file = new JsonFile(Factory::getComposerFile());
        $json = $file->encode($options);

        if ($input->isInteractive()) {
            $io->writeError(array('', $json, ''));
            if (!$io->askConfirmation('Do you confirm generation [<comment>yes</comment>]? ', true)) {
                $io->writeError('<error>Command aborted</error>');

                return 1;
            }
        }

        $file->write($options);

        if ($input->isInteractive() && is_dir('.git')) {
            $ignoreFile = realpath('.gitignore');

            if (false === $ignoreFile) {
                $ignoreFile = realpath('.') . '/.gitignore';
            }

            if (!$this->hasVendorIgnore($ignoreFile)) {
                $question = 'Would you like the <info>vendor</info> directory added to your <info>.gitignore</info> [<comment>yes</comment>]? ';

                if ($io->askConfirmation($question, true)) {
                    $this->addVendorIgnore($ignoreFile);
                }
            }
        }

        $question = 'Would you like to install dependencies now [<comment>yes</comment>]? ';
        if ($input->isInteractive() && $this->hasDependencies($options) && $io->askConfirmation($question, true)) {
            $this->installDependencies($output);
        }
    }

    /**
     * {@inheritdoc}
     */
    protected function interact(InputInterface $input, OutputInterface $output)
    {
        $git = $this->getGitConfig();
        $io = $this->getIO();
        $formatter = $this->getHelperSet()->get('formatter');

        // initialize repos if configured
        $repositories = $input->getOption('repository');
        if ($repositories) {
            $config = Factory::createConfig($io);
            $repos = array(new PlatformRepository);
            foreach ($repositories as $repo) {
                $repos[] = RepositoryFactory::fromString($io, $config, $repo);
            }
            $repos[] = RepositoryFactory::createRepo($io, $config, array(
                'type' => 'composer',
                'url' => 'https://repo.packagist.org',
            ));

            $this->repos = new CompositeRepository($repos);
            unset($repos, $config, $repositories);
        }

        $io->writeError(array(
            '',
            $formatter->formatBlock('Welcome to the Composer config generator', 'bg=blue;fg=white', true),
            '',
        ));

        // namespace
        $io->writeError(array(
            '',
            'This command will guide you through creating your composer.json config.',
            '',
        ));

        $cwd = realpath(".");

        if (!$name = $input->getOption('name')) {
            $name = basename($cwd);
            $name = preg_replace('{(?:([a-z])([A-Z])|([A-Z])([A-Z][a-z]))}', '\\1\\3-\\2\\4', $name);
            $name = strtolower($name);
            if (!empty($_SERVER['COMPOSER_DEFAULT_VENDOR'])) {
                $name = $_SERVER['COMPOSER_DEFAULT_VENDOR'] . '/' . $name;
            } elseif (isset($git['github.user'])) {
                $name = $git['github.user'] . '/' . $name;
            } elseif (!empty($_SERVER['USERNAME'])) {
                $name = $_SERVER['USERNAME'] . '/' . $name;
            } elseif (!empty($_SERVER['USER'])) {
                $name = $_SERVER['USER'] . '/' . $name;
            } elseif (get_current_user()) {
                $name = get_current_user() . '/' . $name;
            } else {
                // package names must be in the format foo/bar
                $name .= '/' . $name;
            }
            $name = strtolower($name);
        } else {
            if (!preg_match('{^[a-z0-9_.-]+/[a-z0-9_.-]+$}D', $name)) {
                throw new \InvalidArgumentException(
                    'The package name '.$name.' is invalid, it should be lowercase and have a vendor name, a forward slash, and a package name, matching: [a-z0-9_.-]+/[a-z0-9_.-]+'
                );
            }
        }

        $name = $io->askAndValidate(
            'Package name (<vendor>/<name>) [<comment>'.$name.'</comment>]: ',
            function ($value) use ($name) {
                if (null === $value) {
                    return $name;
                }

                if (!preg_match('{^[a-z0-9_.-]+/[a-z0-9_.-]+$}D', $value)) {
                    throw new \InvalidArgumentException(
                        'The package name '.$value.' is invalid, it should be lowercase and have a vendor name, a forward slash, and a package name, matching: [a-z0-9_.-]+/[a-z0-9_.-]+'
                    );
                }

                return $value;
            },
            null,
            $name
        );
        $input->setOption('name', $name);

        $description = $input->getOption('description') ?: false;
        $description = $io->ask(
            'Description [<comment>'.$description.'</comment>]: ',
            $description
        );
        $input->setOption('description', $description);

        if (null === $author = $input->getOption('author')) {
            if (!empty($_SERVER['COMPOSER_DEFAULT_AUTHOR'])) {
                $author_name = $_SERVER['COMPOSER_DEFAULT_AUTHOR'];
            } elseif (isset($git['user.name'])) {
                $author_name = $git['user.name'];
            }

            if (!empty($_SERVER['COMPOSER_DEFAULT_EMAIL'])) {
                $author_email = $_SERVER['COMPOSER_DEFAULT_EMAIL'];
            } elseif (isset($git['user.email'])) {
                $author_email = $git['user.email'];
            }

            if (isset($author_name) && isset($author_email)) {
                $author = sprintf('%s <%s>', $author_name, $author_email);
            }
        }

        $self = $this;
        $author = $io->askAndValidate(
            'Author [<comment>'.$author.'</comment>, n to skip]: ',
            function ($value) use ($self, $author) {
                if ($value === 'n' || $value === 'no') {
                    return;
                }
                $value = $value ?: $author;
                $author = $self->parseAuthorString($value);

                return sprintf('%s <%s>', $author['name'], $author['email']);
            },
            null,
            $author
        );
        $input->setOption('author', $author);

        $minimumStability = $input->getOption('stability') ?: null;
        $minimumStability = $io->askAndValidate(
            'Minimum Stability [<comment>'.$minimumStability.'</comment>]: ',
            function ($value) use ($minimumStability) {
                if (null === $value) {
                    return $minimumStability;
                }

                if (!isset(BasePackage::$stabilities[$value])) {
                    throw new \InvalidArgumentException(
                        'Invalid minimum stability "'.$value.'". Must be empty or one of: '.
                        implode(', ', array_keys(BasePackage::$stabilities))
                    );
                }

                return $value;
            },
            null,
            $minimumStability
        );
        $input->setOption('stability', $minimumStability);

        $type = $input->getOption('type') ?: false;
        $type = $io->ask(
            'Package Type (e.g. library, project, metapackage, composer-plugin) [<comment>'.$type.'</comment>]: ',
            $type
        );
        $input->setOption('type', $type);

        if (null === $license = $input->getOption('license')) {
            if (!empty($_SERVER['COMPOSER_DEFAULT_LICENSE'])) {
                $license = $_SERVER['COMPOSER_DEFAULT_LICENSE'];
            }
        }

        $license = $io->ask(
            'License [<comment>'.$license.'</comment>]: ',
            $license
        );
        $input->setOption('license', $license);

        $io->writeError(array('', 'Define your dependencies.', ''));

        // prepare to resolve dependencies
        $repos = $this->getRepos();
        $preferredStability = $minimumStability ?: 'stable';
        $phpVersion = $repos->findPackage('php', '*')->getPrettyVersion();

        $question = 'Would you like to define your dependencies (require) interactively [<comment>yes</comment>]? ';
        $require = $input->getOption('require');
        $requirements = array();
        if ($require || $io->askConfirmation($question, true)) {
            $requirements = $this->determineRequirements($input, $output, $require, $phpVersion, $preferredStability);
        }
        $input->setOption('require', $requirements);

        $question = 'Would you like to define your dev dependencies (require-dev) interactively [<comment>yes</comment>]? ';
        $requireDev = $input->getOption('require-dev');
        $devRequirements = array();
        if ($requireDev || $io->askConfirmation($question, true)) {
            $devRequirements = $this->determineRequirements($input, $output, $requireDev, $phpVersion, $preferredStability);
        }
        $input->setOption('require-dev', $devRequirements);
    }

    /**
     * @private
     * @param  string $author
     * @return array
     */
    public function parseAuthorString($author)
    {
        if (preg_match('/^(?P<name>[- .,\p{L}\p{N}\p{Mn}\'’"()]+) <(?P<email>.+?)>$/u', $author, $match)) {
            if ($this->isValidEmail($match['email'])) {
                return array(
                    'name' => trim($match['name']),
                    'email' => $match['email'],
                );
            }
        }

        throw new \InvalidArgumentException(
            'Invalid author string.  Must be in the format: '.
            'John Smith <john@example.com>'
        );
    }

    protected function findPackages($name)
    {
        return $this->getRepos()->search($name);
    }

    protected function getRepos()
    {
        if (!$this->repos) {
            $this->repos = new CompositeRepository(array_merge(
                array(new PlatformRepository),
                RepositoryFactory::defaultRepos($this->getIO())
            ));
        }

        return $this->repos;
    }

    protected function determineRequirements(InputInterface $input, OutputInterface $output, $requires = array(), $phpVersion = null, $preferredStability = 'stable', $checkProvidedVersions = true)
    {
        if ($requires) {
            $requires = $this->normalizeRequirements($requires);
            $result = array();
            $io = $this->getIO();

            foreach ($requires as $requirement) {
                if (!isset($requirement['version'])) {
                    // determine the best version automatically
                    list($name, $version) = $this->findBestVersionAndNameForPackage($input, $requirement['name'], $phpVersion, $preferredStability);
                    $requirement['version'] = $version;

                    // replace package name from packagist.org
                    $requirement['name'] = $name;

                    $io->writeError(sprintf(
                        'Using version <info>%s</info> for <info>%s</info>',
                        $requirement['version'],
                        $requirement['name']
                    ));
                } else {
                    // check that the specified version/constraint exists before we proceed
                    list($name, $version) = $this->findBestVersionAndNameForPackage($input, $requirement['name'], $phpVersion, $preferredStability, $checkProvidedVersions ? $requirement['version'] : null, 'dev');

                    // replace package name from packagist.org
                    $requirement['name'] = $name;
                }

                $result[] = $requirement['name'] . ' ' . $requirement['version'];
            }

            return $result;
        }

        $versionParser = new VersionParser();
        $io = $this->getIO();
        while (null !== $package = $io->ask('Search for a package: ')) {
            $matches = $this->findPackages($package);

            if (count($matches)) {
                $exactMatch = null;
                $choices = array();
                foreach ($matches as $position => $foundPackage) {
                    $abandoned = '';
                    if (isset($foundPackage['abandoned'])) {
                        if (is_string($foundPackage['abandoned'])) {
                            $replacement = sprintf('Use %s instead', $foundPackage['abandoned']);
                        } else {
                            $replacement = 'No replacement was suggested';
                        }
                        $abandoned = sprintf('<warning>Abandoned. %s.</warning>', $replacement);
                    }

                    $choices[] = sprintf(' <info>%5s</info> %s %s', "[$position]", $foundPackage['name'], $abandoned);
                    if ($foundPackage['name'] === $package) {
                        $exactMatch = true;
                        break;
                    }
                }

                // no match, prompt which to pick
                if (!$exactMatch) {
                    $io->writeError(array(
                        '',
                        sprintf('Found <info>%s</info> packages matching <info>%s</info>', count($matches), $package),
                        '',
                    ));

                    $io->writeError($choices);
                    $io->writeError('');

                    $validator = function ($selection) use ($matches, $versionParser) {
                        if ('' === $selection) {
                            return false;
                        }

                        if (is_numeric($selection) && isset($matches[(int) $selection])) {
                            $package = $matches[(int) $selection];

                            return $package['name'];
                        }

                        if (preg_match('{^\s*(?P<name>[\S/]+)(?:\s+(?P<version>\S+))?\s*$}', $selection, $packageMatches)) {
                            if (isset($packageMatches['version'])) {
                                // parsing `acme/example ~2.3`

                                // validate version constraint
                                $versionParser->parseConstraints($packageMatches['version']);

                                return $packageMatches['name'].' '.$packageMatches['version'];
                            }

                            // parsing `acme/example`
                            return $packageMatches['name'];
                        }

                        throw new \Exception('Not a valid selection');
                    };

                    $package = $io->askAndValidate(
                        'Enter package # to add, or the complete package name if it is not listed: ',
                        $validator,
                        3,
                        false
                    );
                }

                // no constraint yet, determine the best version automatically
                if (false !== $package && false === strpos($package, ' ')) {
                    $validator = function ($input) {
                        $input = trim($input);

                        return $input ?: false;
                    };

                    $constraint = $io->askAndValidate(
                        'Enter the version constraint to require (or leave blank to use the latest version): ',
                        $validator,
                        3,
                        false
                    );

                    if (false === $constraint) {
                        list($name, $constraint) = $this->findBestVersionAndNameForPackage($input, $package, $phpVersion, $preferredStability);

                        $io->writeError(sprintf(
                            'Using version <info>%s</info> for <info>%s</info>',
                            $constraint,
                            $package
                        ));
                    }

                    $package .= ' '.$constraint;
                }

                if (false !== $package) {
                    $requires[] = $package;
                }
            }
        }

        return $requires;
    }

    protected function formatAuthors($author)
    {
        return array($this->parseAuthorString($author));
    }

    protected function formatRequirements(array $requirements)
    {
        $requires = array();
        $requirements = $this->normalizeRequirements($requirements);
        foreach ($requirements as $requirement) {
            $requires[$requirement['name']] = $requirement['version'];
        }

        return $requires;
    }

    protected function getGitConfig()
    {
        if (null !== $this->gitConfig) {
            return $this->gitConfig;
        }

        $finder = new ExecutableFinder();
        $gitBin = $finder->find('git');

        // TODO in v3 always call with an array
        if (method_exists('Symfony\Component\Process\Process', 'fromShellCommandline')) {
            $cmd = new Process(array($gitBin, 'config', '-l'));
        } else {
            $cmd = new Process(sprintf('%s config -l', ProcessExecutor::escape($gitBin)));
        }
        $cmd->run();

        if ($cmd->isSuccessful()) {
            $this->gitConfig = array();
            preg_match_all('{^([^=]+)=(.*)$}m', $cmd->getOutput(), $matches, PREG_SET_ORDER);
            foreach ($matches as $match) {
                $this->gitConfig[$match[1]] = $match[2];
            }

            return $this->gitConfig;
        }

        return $this->gitConfig = array();
    }

    /**
     * Checks the local .gitignore file for the Composer vendor directory.
     *
     * Tested patterns include:
     *  "/$vendor"
     *  "$vendor"
     *  "$vendor/"
     *  "/$vendor/"
     *  "/$vendor/*"
     *  "$vendor/*"
     *
     * @param string $ignoreFile
     * @param string $vendor
     *
     * @return bool
     */
    protected function hasVendorIgnore($ignoreFile, $vendor = 'vendor')
    {
        if (!file_exists($ignoreFile)) {
            return false;
        }

        $pattern = sprintf('{^/?%s(/\*?)?$}', preg_quote($vendor));

        $lines = file($ignoreFile, FILE_IGNORE_NEW_LINES);
        foreach ($lines as $line) {
            if (preg_match($pattern, $line)) {
                return true;
            }
        }

        return false;
    }

    protected function normalizeRequirements(array $requirements)
    {
        $parser = new VersionParser();

        return $parser->parseNameVersionPairs($requirements);
    }

    protected function addVendorIgnore($ignoreFile, $vendor = '/vendor/')
    {
        $contents = "";
        if (file_exists($ignoreFile)) {
            $contents = file_get_contents($ignoreFile);

            if ("\n" !== substr($contents, 0, -1)) {
                $contents .= "\n";
            }
        }

        file_put_contents($ignoreFile, $contents . $vendor. "\n");
    }

    protected function isValidEmail($email)
    {
        // assume it's valid if we can't validate it
        if (!function_exists('filter_var')) {
            return true;
        }

        // php <5.3.3 has a very broken email validator, so bypass checks
        if (PHP_VERSION_ID < 50303) {
            return true;
        }

        return false !== filter_var($email, FILTER_VALIDATE_EMAIL);
    }

    private function getPool(InputInterface $input, $minimumStability = null)
    {
        $key = $minimumStability ?: 'default';

        if (!isset($this->pools[$key])) {
            $this->pools[$key] = $pool = new Pool($minimumStability ?: $this->getMinimumStability($input));
            $pool->addRepository($this->getRepos());
        }

        return $this->pools[$key];
    }

    private function getMinimumStability(InputInterface $input)
    {
        if ($input->hasOption('stability')) {
            return $input->getOption('stability') ?: 'stable';
        }

        $file = Factory::getComposerFile();
        if (is_file($file) && is_readable($file) && is_array($composer = json_decode(file_get_contents($file), true))) {
            if (!empty($composer['minimum-stability'])) {
                return $composer['minimum-stability'];
            }
        }

        return 'stable';
    }

    /**
     * Given a package name, this determines the best version to use in the require key.
     *
     * This returns a version with the ~ operator prefixed when possible.
     *
     * @param  InputInterface            $input
     * @param  string                    $name
     * @param  string|null               $phpVersion
     * @param  string                    $preferredStability
     * @param  string|null               $requiredVersion
     * @param  string                    $minimumStability
     * @throws \InvalidArgumentException
     * @return array                     name version
     */
    private function findBestVersionAndNameForPackage(InputInterface $input, $name, $phpVersion, $preferredStability = 'stable', $requiredVersion = null, $minimumStability = null)
    {
        // find the latest version allowed in this pool
        $versionSelector = new VersionSelector($this->getPool($input, $minimumStability));
        $ignorePlatformReqs = $input->hasOption('ignore-platform-reqs') && $input->getOption('ignore-platform-reqs');

        // ignore phpVersion if platform requirements are ignored
        if ($ignorePlatformReqs) {
            $phpVersion = null;
        }

        $package = $versionSelector->findBestCandidate($name, $requiredVersion, $phpVersion, $preferredStability);

        if (!$package) {
            // platform packages can not be found in the pool in versions other than the local platform's has
            // so if platform reqs are ignored we just take the user's word for it
            if ($ignorePlatformReqs && preg_match(PlatformRepository::PLATFORM_PACKAGE_REGEX, $name)) {
                return array($name, $requiredVersion ?: '*');
            }

            // Check whether the PHP version was the problem
            if ($phpVersion && $versionSelector->findBestCandidate($name, $requiredVersion, null, $preferredStability)) {
                throw new \InvalidArgumentException(sprintf(
                    'Package %s at version %s has a PHP requirement incompatible with your PHP version (%s)',
                    $name,
                    $requiredVersion,
                    $phpVersion
                ));
            }
            // Check whether the required version was the problem
            if ($requiredVersion && $versionSelector->findBestCandidate($name, null, $phpVersion, $preferredStability)) {
                throw new \InvalidArgumentException(sprintf(
                    'Could not find package %s in a version matching %s',
                    $name,
                    $requiredVersion
                ));
            }
            // Check whether the PHP version was the problem
            if ($phpVersion && $versionSelector->findBestCandidate($name)) {
                throw new \InvalidArgumentException(sprintf(
                    'Could not find package %s in any version matching your PHP version (%s)',
                    $name,
                    $phpVersion
                ));
            }

            // Check for similar names/typos
            $similar = $this->findSimilar($name);
            if ($similar) {
                // Check whether the minimum stability was the problem but the package exists
                if ($requiredVersion === null && in_array($name, $similar, true)) {
                    throw new \InvalidArgumentException(sprintf(
                        'Could not find a version of package %s matching your minimum-stability (%s). Require it with an explicit version constraint allowing its desired stability.',
                        $name,
                        $this->getMinimumStability($input)
                    ));
                }

                throw new \InvalidArgumentException(sprintf(
                    "Could not find package %s.\n\nDid you mean " . (count($similar) > 1 ? 'one of these' : 'this') . "?\n    %s",
                    $name,
                    implode("\n    ", $similar)
                ));
            }

            throw new \InvalidArgumentException(sprintf(
                'Could not find a matching version of package %s. Check the package spelling, your version constraint and that the package is available in a stability which matches your minimum-stability (%s).',
                $name,
                $this->getMinimumStability($input)
            ));
        }

        return array(
            $package->getPrettyName(),
            $versionSelector->findRecommendedRequireVersion($package),
        );
    }

    private function findSimilar($package)
    {
        try {
            $results = $this->repos->search($package);
        } catch (\Exception $e) {
            // ignore search errors
            return array();
        }
        $similarPackages = array();

        foreach ($results as $result) {
            $similarPackages[$result['name']] = levenshtein($package, $result['name']);
        }
        asort($similarPackages);

        return array_keys(array_slice($similarPackages, 0, 5));
    }

    private function installDependencies($output)
    {
        try {
            $installCommand = $this->getApplication()->find('install');
            $installCommand->run(new ArrayInput(array()), $output);
        } catch (\Exception $e) {
            $this->getIO()->writeError('Could not install dependencies. Run `composer install` to see more information.');
        }

    }

    private function hasDependencies($options)
    {
        $requires = (array) $options['require'];
        $devRequires = isset($options['require-dev']) ? (array) $options['require-dev'] : array();

        return !empty($requires) || !empty($devRequires);
    }
}