def git_update()

in common.py [0:0]

• 33 lines of code
• 6 McCabe index (conditional complexity)

def git_update(url, configured_sha, path,
               incremental=False,
               stdout=sys.stdout, stderr=sys.stderr):
    """Update a repository to a given sha if necessary."""
    returncodes = []
    try:
        if not incremental:
            git_clean(path, stdout=stdout, stderr=stderr)
        current_sha = git_sha(path, stdout=stdout, stderr=stderr)
        debug_print('current_sha: ' + current_sha, stderr=stderr)
        debug_print('configured_sha: ' + configured_sha, stderr=stderr)
        if current_sha != configured_sha:
            debug_print('current_sha != configured_sha', stderr=stderr)
            command_fetch = ['git', '-C', path, 'fetch']
            returncodes.append(check_execute(command_fetch,
                                             stdout=stdout, stderr=stderr))
            returncodes.append(git_checkout(configured_sha, path,
                                            force=True,
                                            stdout=stdout, stderr=stderr))
            returncodes.append(git_submodule_update(
                path, stdout=stdout, stderr=stderr
            ))
        else:
            debug_print('current_sha == configured_sha', stderr=stderr)
            returncodes.append(git_checkout(configured_sha, path,
                                            force=True,
                                            stdout=stdout, stderr=stderr))
    except ExecuteCommandFailure:
        debug_print("warning: Unable to update. Falling back to a clone.",
                    stderr=stderr)
        check_execute(['rm', '-rf', path], stdout=stdout, stderr=stderr)
        return git_clone(url, path, tree=configured_sha,
                         stdout=stdout, stderr=stderr)
    return 0 if all(rc == 0 for rc in returncodes) else 1