def update()

in pontoon/sync/repositories/git.py [0:0]

• 48 lines of code
• 19 McCabe index (conditional complexity)

def update(source: str, target: str, branch: str | None, shallow: bool) -> None:
    log.debug(f"Git: Updating repo {source}")
    if branch and re.search(r"[^%&()+,\-./0-9;<=>@A-Z_a-z{|}]|^-|\.\.|{@", branch):
        raise PullFromRepositoryException(f"Git: Unsupported branch name {branch}")

    command = ["git", "rev-parse", "--is-shallow-repository"]
    code, output, error = execute(command, target)

    if code == 0:
        command = (
            ["git", "fetch", "origin"]
            if shallow or output.strip() == b"false"
            else ["git", "fetch", "--unshallow", "origin"]
        )
        code, output, error = execute(command, target)

    if code == 0:
        log.debug("Git: Repo updated.")

        if branch:
            command = ["git", "checkout", branch]
            code, output, error = execute(command, target)
            if code != 0:
                if output:
                    log.debug(output)
                raise PullFromRepositoryException(error)
            log.debug(f"Git: Branch {branch} checked out.")

        # Undo any local changes
        remote = f"origin/{branch}" if branch else "origin"
        command = ["git", "reset", "--hard", remote]
        code, output, error = execute(command, target)
        if code != 0:
            if output:
                log.debug(output)
            raise PullFromRepositoryException(error)
    else:
        if error != "No such file or directory":
            if output:
                log.debug(output)
            log.warning(f"Git: {error}")
        log.debug("Git: Cloning repo...")
        command = ["git", "clone"]
        if branch:
            command.extend(["--branch", branch])
        if shallow:
            command.extend(["--depth", "1"])
        command.extend([source, target])
        code, output, error = execute(command)
        if code != 0:
            if output:
                log.debug(output)
            raise PullFromRepositoryException(error)
        log.debug("Git: Repo cloned.")