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Add some comments

pull/812/head
Jordi Boggiano 2012-06-20 12:09:09 +02:00
parent 73a865bf2a
commit 54054365e0
1 changed files with 5 additions and 1 deletions

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@ -75,14 +75,16 @@ class GitDownloader extends VcsDownloader
$branch = preg_replace('{(?:^dev-|(?:\.x)?-dev$)}i', '', $branch);
$date = $date->format('U');
// guess which remote branch to look at first
$command = 'git branch -r';
if (1 === $this->process->execute($command, $output, $path)) {
if (0 !== $this->process->execute($command, $output, $path)) {
throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
}
$guessTemplate = 'git log --until=%s --date=raw -n1 --pretty=%%H %s';
foreach ($this->process->splitLines($output) as $line) {
if (preg_match('{^composer/'.preg_quote($branch).'(?:\.x)?$}i', trim($line))) {
// find the previous commit by date in the given branch
if (0 === $this->process->execute(sprintf($guessTemplate, $date, escapeshellarg(trim($line))), $output, $path)) {
$newReference = trim($output);
}
@ -92,12 +94,14 @@ class GitDownloader extends VcsDownloader
}
if (empty($newReference)) {
// no matching branch found, find the previous commit by date in all commits
if (0 !== $this->process->execute(sprintf($guessTemplate, $date, '--all'), $output, $path)) {
throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
}
$newReference = trim($output);
}
// checkout the new recovered ref
$command = sprintf($template, escapeshellarg($newReference));
if (0 === $this->process->execute($command, $output, $path)) {
$this->io->write(' '.$reference.' is gone (history was rewritten?), recovered by checking out '.$newReference);