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<?php
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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* Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer\Command;
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use Composer\DependencyResolver\Pool;
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use Composer\DependencyResolver\Request;
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use Composer\DependencyResolver\DefaultPolicy;
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use Composer\DependencyResolver\Solver;
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use Composer\Repository\PlatformRepository;
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use Composer\Package\MemoryPackage;
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use Composer\Package\LinkConstraint\VersionConstraint;
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/**
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* @author Jordi Boggiano <j.boggiano@seld.be>
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*/
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class InstallCommand
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{
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protected $composer;
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public function install($composer)
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{
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$this->composer = $composer;
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// TODO this needs a parameter to enable installing from source (i.e. git clone, instead of downloading archives)
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$sourceInstall = false;
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$config = $this->loadConfig();
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echo 'Loading repositories'.PHP_EOL;
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if (isset($config['repositories'])) {
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foreach ($config['repositories'] as $name => $spec) {
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$composer->addRepository($name, $spec);
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}
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}
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$pool = new Pool;
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$repoInstalled = new PlatformRepository;
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$pool->addRepository($repoInstalled);
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// TODO check the lock file to see what's currently installed
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// $repoInstalled->addPackage(new MemoryPackage('$Package', '$Version'));
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echo 'Loading package list'.PHP_EOL;
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foreach ($composer->getRepositories() as $repository) {
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$pool->addRepository($repository);
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}
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$request = new Request($pool);
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echo 'Building up request'.PHP_EOL;
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// TODO there should be an update flag or dedicated update command
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// TODO check lock file to remove packages that disappeared from the requirements
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foreach ($config['require'] as $name => $version) {
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$name = $this->lowercase($name);
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if ('latest' === $version) {
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$request->install($name);
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} else {
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preg_match('#^([>=<~]*)([\d.]+.*)$#', $version, $match);
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if (!$match[1]) {
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$match[1] = '=';
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}
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$constraint = new VersionConstraint($match[1], $match[2]);
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$request->install($name, $constraint);
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}
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}
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echo 'Solving dependencies'.PHP_EOL;
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$policy = new DefaultPolicy;
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$solver = new Solver($policy, $pool, $repoInstalled);
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$transaction = $solver->solve($request);
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$lock = array();
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foreach ($transaction as $task) {
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switch ($task['job']) {
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case 'install':
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$package = $task['package'];
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echo '> Installing '.$package->getName().PHP_EOL;
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if ($sourceInstall) {
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// TODO
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} else {
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if ($package->getDistType()) {
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$downloaderType = $package->getDistType();
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$type = 'dist';
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} elseif ($package->getSourceType()) {
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echo 'Package '.$package->getName().' has no dist url, installing from source instead.';
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$downloaderType = $package->getSourceType();
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$type = 'source';
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} else {
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throw new \UnexpectedValueException('Package '.$package->getName().' has no source or dist URL.');
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}
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$downloader = $composer->getDownloader($downloaderType);
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$installer = $composer->getInstaller($package->getType());
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if (!$installer->install($package, $downloader, $type)) {
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throw new \LogicException($package->getName().' could not be installed.');
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}
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}
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$lock[$package->getName()] = array('version' => $package->getVersion());
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break;
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default:
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throw new \UnexpectedValueException('Unhandled job type : '.$task['job']);
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}
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}
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echo '> Done'.PHP_EOL;
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$this->storeLockFile($lock);
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}
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protected function loadConfig()
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{
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if (!file_exists('composer.json')) {
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throw new \UnexpectedValueException('composer.json config file not found in '.getcwd());
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}
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$config = json_decode(file_get_contents('composer.json'), true);
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if (!$config) {
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switch (json_last_error()) {
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case JSON_ERROR_NONE:
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$msg = 'No error has occurred, is your composer.json file empty?';
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break;
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case JSON_ERROR_DEPTH:
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$msg = 'The maximum stack depth has been exceeded';
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break;
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case JSON_ERROR_STATE_MISMATCH:
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$msg = 'Invalid or malformed JSON';
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break;
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case JSON_ERROR_CTRL_CHAR:
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$msg = 'Control character error, possibly incorrectly encoded';
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break;
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case JSON_ERROR_SYNTAX:
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$msg = 'Syntax error';
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break;
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case JSON_ERROR_UTF8:
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$msg = 'Malformed UTF-8 characters, possibly incorrectly encoded';
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break;
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}
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throw new \UnexpectedValueException('Incorrect composer.json file: '.$msg);
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}
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return $config;
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}
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protected function storeLockFile(array $content)
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{
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file_put_contents('composer.lock', json_encode($content, JSON_FORCE_OBJECT)."\n");
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echo '> composer.lock dumped'.PHP_EOL;
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}
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protected function lowercase($str)
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{
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if (function_exists('mb_strtolower')) {
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return mb_strtolower($str, 'UTF-8');
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}
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return strtolower($str, 'UTF-8');
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}
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}
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