# -*- coding: utf-8 -*- # # Copyright (C) 2011-2016 Ben Kurtovic # Released under the terms of the MIT License. See LICENSE for details. from __future__ import print_function import os from colorama import Fore, Style from git import RemoteReference as RemoteRef, Repo, exc from git.util import RemoteProgress __all__ = ["update_bookmarks", "update_directories"] BOLD = Style.BRIGHT BLUE = Fore.BLUE + BOLD GREEN = Fore.GREEN + BOLD RED = Fore.RED + BOLD YELLOW = Fore.YELLOW + BOLD RESET = Style.RESET_ALL INDENT1 = " " * 3 INDENT2 = " " * 7 ERROR = RED + "Error:" + RESET class _ProgressMonitor(RemoteProgress): """Displays relevant output during the fetching process.""" def __init__(self): super(_ProgressMonitor, self).__init__() self._started = False def update(self, op_code, cur_count, max_count=None, message=''): """Called whenever progress changes. Overrides default behavior.""" if op_code & (self.COMPRESSING | self.RECEIVING): cur_count = str(int(cur_count)) if max_count: max_count = str(int(max_count)) if op_code & self.BEGIN: print("\b, " if self._started else " (", end="") if not self._started: self._started = True if op_code & self.END: end = ")" elif max_count: end = "\b" * (1 + len(cur_count) + len(max_count)) else: end = "\b" * len(cur_count) if max_count: print("{0}/{1}".format(cur_count, max_count), end=end) else: print(str(cur_count), end=end) def _fetch_remotes(remotes, prune): """Fetch a list of remotes, displaying progress info along the way.""" def _get_name(ref): """Return the local name of a remote or tag reference.""" return ref.remote_head if isinstance(ref, RemoteRef) else ref.name # TODO: missing branch deleted (via --prune): info = [("NEW_HEAD", "new branch", "new branches"), ("NEW_TAG", "new tag", "new tags"), ("FAST_FORWARD", "branch update", "branch updates")] up_to_date = BLUE + "up to date" + RESET for remote in remotes: print(INDENT2, "Fetching", BOLD + remote.name, end="") if not remote.config_reader.has_option("fetch"): print(":", YELLOW + "skipped:", "no configured refspec.") continue try: results = remote.fetch(progress=_ProgressMonitor(), prune=prune) except exc.GitCommandError as err: msg = err.command[0].replace("Error when fetching: ", "") if not msg.endswith("."): msg += "." print(":", RED + "error:", msg) return except AssertionError: # Seems to be the result of a bug in GitPython # This happens when git initiates an auto-gc during fetch: print(":", RED + "error:", "something went wrong in GitPython,", "but the fetch might have been successful.") return rlist = [] for attr, singular, plural in info: names = [_get_name(res.ref) for res in results if res.flags & getattr(res, attr)] if names: desc = singular if len(names) == 1 else plural colored = GREEN + desc + RESET rlist.append("{0} ({1})".format(colored, ", ".join(names))) print(":", (", ".join(rlist) if rlist else up_to_date) + ".") def _update_branch(repo, branch, is_active=False): """Update a single branch.""" print(INDENT2, "Updating", BOLD + branch.name, end=": ") upstream = branch.tracking_branch() if not upstream: print(YELLOW + "skipped:", "no upstream is tracked.") return try: branch.commit except ValueError: print(YELLOW + "skipped:", "branch has no revisions.") return try: upstream.commit except ValueError: print(YELLOW + "skipped:", "upstream does not exist.") return base = repo.git.merge_base(branch.commit, upstream.commit) if repo.commit(base) == upstream.commit: print(BLUE + "up to date", end=".\n") return if is_active: try: repo.git.merge(upstream.name, ff_only=True) print(GREEN + "done", end=".\n") except exc.GitCommandError as err: msg = err.stderr if "local changes" in msg and "would be overwritten" in msg: print(YELLOW + "skipped:", "uncommitted changes.") else: print(YELLOW + "skipped:", "not possible to fast-forward.") else: status = repo.git.merge_base( branch.commit, upstream.commit, is_ancestor=True, with_extended_output=True, with_exceptions=False)[0] if status != 0: print(YELLOW + "skipped:", "not possible to fast-forward.") else: repo.git.branch(branch.name, upstream.name, force=True) print(GREEN + "done", end=".\n") def _update_repository(repo, current_only, fetch_only, prune): """Update a single git repository by fetching remotes and rebasing/merging. The specific actions depend on the arguments given. We will fetch all remotes if *current_only* is ``False``, or only the remote tracked by the current branch if ``True``. If *fetch_only* is ``False``, we will also update all fast-forwardable branches that are tracking valid upstreams. If *prune* is ``True``, remote-tracking branches that no longer exist on their remote after fetching will be deleted. """ print(INDENT1, BOLD + os.path.split(repo.working_dir)[1] + ":") try: active = repo.active_branch except TypeError: # Happens when HEAD is detached active = None if current_only: if not active: print(INDENT2, ERROR, "--current-only doesn't make sense with a detached HEAD.") return ref = active.tracking_branch() if not ref: print(INDENT2, ERROR, "no remote tracked by current branch.") return remotes = [repo.remotes[ref.remote_name]] else: remotes = repo.remotes if not remotes: print(INDENT2, ERROR, "no remotes configured to fetch.") return _fetch_remotes(remotes, prune) if not fetch_only: for branch in sorted(repo.heads, key=lambda b: b.name): _update_branch(repo, branch, branch == active) def _update_subdirectories(path, update_args): """Update all subdirectories that are git repos in a given directory.""" repos = [] for item in os.listdir(path): try: repo = Repo(os.path.join(path, item)) except (exc.InvalidGitRepositoryError, exc.NoSuchPathError): continue repos.append(repo) suffix = "" if len(repos) == 1 else "s" print(BOLD + path, "({0} repo{1}):".format(len(repos), suffix)) for repo in sorted(repos, key=lambda r: os.path.split(r.working_dir)[1]): _update_repository(repo, *update_args) def _update_directory(path, update_args): """Update a particular directory. Determine whether the directory is a git repo on its own, a directory of git repositories, or something invalid. If the first, update the single repository; if the second, update all repositories contained within; if the third, print an error. """ try: repo = Repo(path) except exc.NoSuchPathError: print(ERROR, BOLD + path, "doesn't exist!") except exc.InvalidGitRepositoryError: if os.path.isdir(path): _update_subdirectories(path, update_args) else: print(ERROR, BOLD + path, "isn't a repository!") else: print(BOLD + repo.working_dir, "(1 repo):") _update_repository(repo, *update_args) def update_bookmarks(bookmarks, update_args): """Loop through and update all bookmarks.""" if bookmarks: for path in bookmarks: _update_directory(path, update_args) else: print("You don't have any bookmarks configured! Get help with 'gitup -h'.") def update_directories(paths, update_args): """Update a list of directories supplied by command arguments.""" for path in paths: full_path = os.path.abspath(path) _update_directory(full_path, update_args)