228 lines
9.2 KiB
PHP
228 lines
9.2 KiB
PHP
<?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\Downloader;
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use Composer\Package\PackageInterface;
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/**
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* @author Jordi Boggiano <j.boggiano@seld.be>
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*/
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class GitDownloader extends VcsDownloader
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{
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/**
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* {@inheritDoc}
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*/
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public function doDownload(PackageInterface $package, $path)
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{
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$ref = $package->getSourceReference();
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$command = 'git clone %s %s && cd %2$s && git remote add composer %1$s && git fetch composer';
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$this->io->write(" Cloning ".$ref);
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$commandCallable = function($url) use ($ref, $path, $command) {
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return sprintf($command, escapeshellarg($url), escapeshellarg($path), escapeshellarg($ref));
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};
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$this->runCommand($commandCallable, $package->getSourceUrl(), $path);
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$this->setPushUrl($package, $path);
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$this->updateToCommit($path, $ref, $package->getPrettyVersion(), $package->getReleaseDate());
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}
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/**
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* {@inheritDoc}
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*/
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public function doUpdate(PackageInterface $initial, PackageInterface $target, $path)
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{
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$ref = $target->getSourceReference();
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$this->io->write(" Checking out ".$ref);
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$command = 'cd %s && git remote set-url composer %s && git fetch composer && git fetch --tags composer';
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// capture username/password from github URL if there is one
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$this->process->execute(sprintf('cd %s && git remote -v', escapeshellarg($path)), $output);
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if (preg_match('{^composer\s+https://(.+):(.+)@github.com/}im', $output, $match)) {
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$this->io->setAuthorization('github.com', $match[1], $match[2]);
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}
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$commandCallable = function($url) use ($ref, $path, $command) {
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return sprintf($command, escapeshellarg($path), escapeshellarg($url), escapeshellarg($ref));
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};
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$this->runCommand($commandCallable, $target->getSourceUrl());
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$this->updateToCommit($path, $ref, $target->getPrettyVersion(), $target->getReleaseDate());
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}
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protected function updateToCommit($path, $reference, $branch, $date)
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{
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$template = 'git checkout %s && git reset --hard %1$s';
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$command = sprintf($template, escapeshellarg($reference));
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if (0 === $this->process->execute($command, $output, $path)) {
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return;
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}
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// reference was not found (prints "fatal: reference is not a tree: $ref")
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if ($date && false !== strpos($this->process->getErrorOutput(), $reference)) {
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$branch = preg_replace('{(?:^dev-|(?:\.x)?-dev$)}i', '', $branch);
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$date = $date->format('U');
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// guess which remote branch to look at first
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$command = 'git branch -r';
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if (0 !== $this->process->execute($command, $output, $path)) {
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throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
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}
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$guessTemplate = 'git log --until=%s --date=raw -n1 --pretty=%%H %s';
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foreach ($this->process->splitLines($output) as $line) {
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if (preg_match('{^composer/'.preg_quote($branch).'(?:\.x)?$}i', trim($line))) {
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// find the previous commit by date in the given branch
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if (0 === $this->process->execute(sprintf($guessTemplate, $date, escapeshellarg(trim($line))), $output, $path)) {
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$newReference = trim($output);
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}
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break;
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}
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}
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if (empty($newReference)) {
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// no matching branch found, find the previous commit by date in all commits
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if (0 !== $this->process->execute(sprintf($guessTemplate, $date, '--all'), $output, $path)) {
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throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
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}
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$newReference = trim($output);
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}
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// checkout the new recovered ref
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$command = sprintf($template, escapeshellarg($newReference));
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if (0 === $this->process->execute($command, $output, $path)) {
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$this->io->write(' '.$reference.' is gone (history was rewritten?), recovered by checking out '.$newReference);
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return;
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}
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}
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throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
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}
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/**
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* {@inheritDoc}
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*/
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protected function enforceCleanDirectory($path)
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{
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$command = sprintf('cd %s && git status --porcelain --untracked-files=no', escapeshellarg($path));
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if (0 !== $this->process->execute($command, $output)) {
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throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
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}
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if (trim($output)) {
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throw new \RuntimeException('Source directory ' . $path . ' has uncommitted changes');
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}
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}
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/**
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* Runs a command doing attempts for each protocol supported by github.
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*
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* @param callable $commandCallable A callable building the command for the given url
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* @param string $url
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* @param string $path The directory to remove for each attempt (null if not needed)
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* @throws \RuntimeException
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*/
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protected function runCommand($commandCallable, $url, $path = null)
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{
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$handler = array($this, 'outputHandler');
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// github, autoswitch protocols
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if (preg_match('{^(?:https?|git)(://github.com/.*)}', $url, $match)) {
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$protocols = array('git', 'https', 'http');
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$messages = array();
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foreach ($protocols as $protocol) {
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$url = $protocol . $match[1];
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if (0 === $this->process->execute(call_user_func($commandCallable, $url), $handler)) {
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return;
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}
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$messages[] = '- ' . $url . "\n" . preg_replace('#^#m', ' ', $this->process->getErrorOutput());
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if (null !== $path) {
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$this->filesystem->removeDirectory($path);
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}
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}
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// failed to checkout, first check git accessibility
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$this->throwException('Failed to clone ' . $url .' via git, https and http protocols, aborting.' . "\n\n" . implode("\n", $messages), $url);
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}
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$command = call_user_func($commandCallable, $url);
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if (0 !== $this->process->execute($command, $handler)) {
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if (preg_match('{^git@github.com:(.+?)\.git$}i', $url, $match) && $this->io->isInteractive()) {
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// private repository without git access, try https with auth
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$retries = 3;
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$retrying = false;
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do {
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if ($retrying) {
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$this->io->write('Invalid credentials');
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}
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if (!$this->io->hasAuthorization('github.com') || $retrying) {
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$username = $this->io->ask('Username: ');
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$password = $this->io->askAndHideAnswer('Password: ');
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$this->io->setAuthorization('github.com', $username, $password);
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}
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$auth = $this->io->getAuthorization('github.com');
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$url = 'https://'.$auth['username'] . ':' . $auth['password'] . '@github.com/'.$match[1].'.git';
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$command = call_user_func($commandCallable, $url);
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if (0 === $this->process->execute($command, $handler)) {
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return;
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}
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if (null !== $path) {
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$this->filesystem->removeDirectory($path);
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}
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$retrying = true;
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} while (--$retries);
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}
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if (null !== $path) {
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$this->filesystem->removeDirectory($path);
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}
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$this->throwException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput(), $url);
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}
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}
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public function outputHandler($type, $buffer)
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{
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if ($type !== 'out') {
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return;
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}
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if ($this->io->isVerbose()) {
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$this->io->write($buffer, false);
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}
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}
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protected function throwException($message, $url)
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{
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if (0 !== $this->process->execute('git --version', $ignoredOutput)) {
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throw new \RuntimeException('Failed to clone '.$url.', git was not found, check that it is installed and in your PATH env.' . "\n\n" . $this->process->getErrorOutput());
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}
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throw new \RuntimeException($message);
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}
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protected function setPushUrl(PackageInterface $package, $path)
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{
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// set push url for github projects
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if (preg_match('{^(?:https?|git)://github.com/([^/]+)/([^/]+?)(?:\.git)?$}', $package->getSourceUrl(), $match)) {
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$pushUrl = 'git@github.com:'.$match[1].'/'.$match[2].'.git';
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$cmd = sprintf('git remote set-url --push origin %s', escapeshellarg($pushUrl));
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$this->process->execute($cmd, $ignoredOutput, $path);
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}
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}
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}
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