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<?php declare(strict_types=1);
/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Composer\Downloader;
use Composer\Package\PackageInterface;
use Composer\Pcre\Preg;
use Composer\Util\Svn as SvnUtil;
use Composer\Repository\VcsRepository;
use Composer\Util\ProcessExecutor;
use React\Promise\PromiseInterface;
/**
* @author Ben Bieker <mail@ben-bieker.de>
* @author Till Klampaeckel <till@php.net>
*/
class SvnDownloader extends VcsDownloader
{
/** @var bool */
protected $cacheCredentials = true;
/**
* @inheritDoc
*/
protected function doDownload(PackageInterface $package, string $path, string $url, ?PackageInterface $prevPackage = null): PromiseInterface
{
SvnUtil::cleanEnv();
$util = new SvnUtil($url, $this->io, $this->config, $this->process);
if (null === $util->binaryVersion()) {
throw new \RuntimeException('svn was not found in your PATH, skipping source download');
}
return \React\Promise\resolve(null);
}
/**
* @inheritDoc
*/
protected function doInstall(PackageInterface $package, string $path, string $url): PromiseInterface
{
SvnUtil::cleanEnv();
$ref = $package->getSourceReference();
$repo = $package->getRepository();
if ($repo instanceof VcsRepository) {
$repoConfig = $repo->getRepoConfig();
if (array_key_exists('svn-cache-credentials', $repoConfig)) {
$this->cacheCredentials = (bool) $repoConfig['svn-cache-credentials'];
}
}
$this->io->writeError(" Checking out ".$package->getSourceReference());
$this->execute($package, $url, "svn co", sprintf("%s/%s", $url, $ref), null, $path);
return \React\Promise\resolve(null);
}
/**
* @inheritDoc
*/
protected function doUpdate(PackageInterface $initial, PackageInterface $target, string $path, string $url): PromiseInterface
{
SvnUtil::cleanEnv();
$ref = $target->getSourceReference();
if (!$this->hasMetadataRepository($path)) {
throw new \RuntimeException('The .svn directory is missing from '.$path.', see https://getcomposer.org/commit-deps for more information');
}
$util = new SvnUtil($url, $this->io, $this->config, $this->process);
$flags = "";
if (version_compare($util->binaryVersion(), '1.7.0', '>=')) {
$flags .= ' --ignore-ancestry';
}
$this->io->writeError(" Checking out " . $ref);
$this->execute($target, $url, "svn switch" . $flags, sprintf("%s/%s", $url, $ref), $path);
return \React\Promise\resolve(null);
}
/**
* @inheritDoc
*/
public function getLocalChanges(PackageInterface $package, string $path): ?string
{
if (!$this->hasMetadataRepository($path)) {
return null;
}
$this->process->execute('svn status --ignore-externals', $output, $path);
return Preg::isMatch('{^ *[^X ] +}m', $output) ? $output : null;
}
/**
* Execute an SVN command and try to fix up the process with credentials
* if necessary.
*
* @param string $baseUrl Base URL of the repository
* @param string $command SVN command to run
* @param string $url SVN url
* @param string $cwd Working directory
* @param string $path Target for a checkout
* @throws \RuntimeException
*/
protected function execute(PackageInterface $package, string $baseUrl, string $command, string $url, ?string $cwd = null, ?string $path = null): string
{
$util = new SvnUtil($baseUrl, $this->io, $this->config, $this->process);
$util->setCacheCredentials($this->cacheCredentials);
try {
return $util->execute($command, $url, $cwd, $path, $this->io->isVerbose());
} catch (\RuntimeException $e) {
throw new \RuntimeException(
$package->getPrettyName().' could not be downloaded, '.$e->getMessage()
);
}
}
/**
* @inheritDoc
*/
protected function cleanChanges(PackageInterface $package, string $path, bool $update): PromiseInterface
{
if (null === ($changes = $this->getLocalChanges($package, $path))) {
return \React\Promise\resolve(null);
}
if (!$this->io->isInteractive()) {
if (true === $this->config->get('discard-changes')) {
return $this->discardChanges($path);
}
return parent::cleanChanges($package, $path, $update);
}
$changes = array_map(static function ($elem): string {
return ' '.$elem;
}, Preg::split('{\s*\r?\n\s*}', $changes));
$countChanges = count($changes);
$this->io->writeError(sprintf(' <error>'.$package->getPrettyName().' has modified file%s:</error>', $countChanges === 1 ? '' : 's'));
$this->io->writeError(array_slice($changes, 0, 10));
if ($countChanges > 10) {
$remainingChanges = $countChanges - 10;
$this->io->writeError(
sprintf(
' <info>'.$remainingChanges.' more file%s modified, choose "v" to view the full list</info>',
$remainingChanges === 1 ? '' : 's'
)
);
}
while (true) {
switch ($this->io->ask(' <info>Discard changes [y,n,v,?]?</info> ', '?')) {
case 'y':
$this->discardChanges($path);
break 2;
case 'n':
throw new \RuntimeException('Update aborted');
case 'v':
$this->io->writeError($changes);
break;
case '?':
default:
$this->io->writeError([
' y - discard changes and apply the '.($update ? 'update' : 'uninstall'),
' n - abort the '.($update ? 'update' : 'uninstall').' and let you manually clean things up',
' v - view modified files',
' ? - print help',
]);
break;
}
}
return \React\Promise\resolve(null);
}
/**
* @inheritDoc
*/
protected function getCommitLogs(string $fromReference, string $toReference, string $path): string
{
if (Preg::isMatch('{@(\d+)$}', $fromReference) && Preg::isMatch('{@(\d+)$}', $toReference)) {
// retrieve the svn base url from the checkout folder
$command = sprintf('svn info --non-interactive --xml -- %s', ProcessExecutor::escape($path));
if (0 !== $this->process->execute($command, $output, $path)) {
throw new \RuntimeException(
'Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput()
);
}
$urlPattern = '#<url>(.*)</url>#';
if (Preg::isMatchStrictGroups($urlPattern, $output, $matches)) {
$baseUrl = $matches[1];
} else {
throw new \RuntimeException(
'Unable to determine svn url for path '. $path
);
}
// strip paths from references and only keep the actual revision
$fromRevision = Preg::replace('{.*@(\d+)$}', '$1', $fromReference);
$toRevision = Preg::replace('{.*@(\d+)$}', '$1', $toReference);
$command = sprintf('svn log -r%s:%s --incremental', ProcessExecutor::escape($fromRevision), ProcessExecutor::escape($toRevision));
$util = new SvnUtil($baseUrl, $this->io, $this->config, $this->process);
$util->setCacheCredentials($this->cacheCredentials);
try {
return $util->executeLocal($command, $path, null, $this->io->isVerbose());
} catch (\RuntimeException $e) {
throw new \RuntimeException(
'Failed to execute ' . $command . "\n\n".$e->getMessage()
);
}
}
return "Could not retrieve changes between $fromReference and $toReference due to missing revision information";
}
/**
* @phpstan-return PromiseInterface<void|null>
*/
protected function discardChanges(string $path): PromiseInterface
{
if (0 !== $this->process->execute('svn revert -R .', $output, $path)) {
throw new \RuntimeException("Could not reset changes\n\n:".$this->process->getErrorOutput());
}
return \React\Promise\resolve(null);
}
/**
* @inheritDoc
*/
protected function hasMetadataRepository(string $path): bool
{
return is_dir($path.'/.svn');
}
}