git-nautilus-icons.py 文件源码

def git_call(cmd, path):
    """Calls a command with check_output, raising NotARepo if there is no git
    repo there. This lets us avoid the race condition of a repo disappearing
    disappear before we call the command."""
    try:
        proc = Popen(cmd, cwd=path, stdout=PIPE, stderr=PIPE)
        stdout, stderr = proc.communicate()
    except OSError:
        # Git not installed, or repo path doesn't exist or isn't a directory.
        raise NotARepo(proc.returncode, cmd, output=(stdout + stderr))
    else:
        if proc.returncode:
            if 'Not a git repository' in stderr.decode('utf8'):
                raise NotARepo(proc.returncode, cmd, output=(stdout + stderr))
            else:
                raise CalledProcessError(proc.returncode, cmd, output=(stdout + stderr))
        return stdout.decode('utf8')