/**
* Compares local revision to the remote one and
* builds files to upload and delete
*
* @throws Exception if unknown git diff status
* @return string
*/
public function compare()
{
$remoteRevision = null;
$filesToUpload = array();
$filesToDelete = array();
// The revision file goes inside the submodule.
if ($this->isSubmodule) {
$this->revisionFile = $this->isSubmodule . '/' . $this->revisionFile;
}
if ($this->bridge->exists($this->revisionFile)) {
$remoteRevision = $this->bridge->get($this->revisionFile);
$message = "\r\n» Taking it from '" . substr($remoteRevision, 0, 7) . "'";
} else {
$message = "\r\n» Fresh deployment - grab a coffee";
}
// A remote version exists.
if ($remoteRevision) {
// Get the files from the diff.
$output = $this->git->diff($remoteRevision);
foreach ($output as $line) {
// Added, changed or modified.
if ($line[0] == 'A' or $line[0] == 'C' or $line[0] == 'M') {
$filesToUpload[] = trim(substr($line, 1));
} elseif ($line[0] == 'D') {
$filesToDelete[] = trim(substr($line, 1));
} else {
throw new Exception("Unknown git-diff status: {$line[0]}");
}
}
} else {
$filesToUpload = $this->git->files();
}
// Remove ignored files from the list of uploads.
$filesToUpload = array_diff($filesToUpload, $this->ignoredFiles);
$this->filesToUpload = $filesToUpload;
$this->filesToDelete = $filesToDelete;
return $message;
}
