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<?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();
}
$this->io->writeError(" - Updating <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);
}
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