git::status PHP Method

    static function status($raw = false, $cached = true)
    {
        $s = self::exec('status', null, null, null, false, true);
        if ($raw) {
            return $s;
        }
        if (self::$status_cache !== null && $cached) {
            return self::$status_cache;
        }
        $st = array('branch' => null);
        $i = 0;
        $lines = explode("\n", rtrim($s));
        $nlines = count($lines);
        $st['branch'] = array_pop(explode(' ', $lines[0], 4));
        $i = 1;
        $line = $lines[1];
        if ($line && $line[0] === '#') {
            if (preg_match('/^# Your branch is ahead of \'([^\']+)\' by ([0-9]+) /', $line, $m)) {
                $st['upstream'] = array('name' => $m[1], 'distance' => intval($m[2]));
            }
        }
        $files = array();
        $stage = '';
        for (; $i < $nlines; $i++) {
            $line = $lines[$i];
            $prevstage = false;
            if (!$line || $line[0] !== '#') {
                break;
            }
            if (strlen($line) < 2) {
                continue;
            }
            if ($line === '# Changes to be committed:') {
                $prevstage = $stage;
                $stage = 'staged';
            } elseif ($line === '# Changed but not updated:') {
                $prevstage = $stage;
                $stage = 'unstaged';
            } elseif ($line === '# Untracked files:') {
                $prevstage = $stage;
                $stage = 'untracked';
            } elseif ($line[1] === "\t") {
                if ($stage === 'untracked') {
                    $name = gb_normalize_git_name(substr($line, 2));
                    $files[$name] = 1;
                } elseif (preg_match('/^#\\t([a-z ]+):[\\t ]+((.+) -> (.+)|.+)$/', $line, $m)) {
                    $status = $m[1];
                    if ($status === 'renamed') {
                        $name = gb_normalize_git_name($m[3]);
                        $newname = gb_normalize_git_name($m[4]);
                        $files[$name] = array('status' => $status, 'newname' => $newname);
                    } else {
                        if ($status === 'new file') {
                            $status = 'added';
                        }
                        $name = gb_normalize_git_name($m[2]);
                        $files[$name] = array('status' => $status);
                    }
                }
            }
            # put away previous files
            if ($prevstage) {
                $st[$prevstage] = $files;
                $files = array();
            }
        }
        # put away last files, if any
        if ($stage) {
            $st[$stage] = $files;
            $files = array();
        }
        # always save cache, even if $cached is false
        self::$status_cache = $st;
        return $st;
    }

 /** True if there are local, uncommitted modifications */
 function isDirty()
 {
     if (!$this->isTracked()) {
         return true;
     }
     $st = git::status();
     return isset($st['staged'][$this->name]) || isset($st['unstaged'][$this->name]);
 }