3 """Helper to rebase all local branches."""
8 from pathlib import Path
14 # Not sure if newer features are used.
15 assert sys.version_info >= (3, 6), f'Python 3.6+ required but found {sys.version}'
18 PROG = os.path.basename(__file__)
22 """Terminal escape sequences."""
28 _BLACK, _RED, _GREEN, _YELLOW, _BLUE, _MAGENTA, _CYAN, _WHITE = range(0, 8)
31 FG_BLACK = str(_FG + _BLACK)
32 FG_RED = str(_FG + _RED)
33 FG_GREEN = str(_FG + _GREEN)
34 FG_YELLOW = str(_FG + _YELLOW)
35 FG_BLUE = str(_FG + _BLUE)
36 FG_MAGENTA = str(_FG + _MAGENTA)
37 FG_CYAN = str(_FG + _CYAN)
38 FG_WHITE = str(_FG + _WHITE)
44 _combine = lambda *args: Terminal.CSI_PREFIX + ';'.join(args) + Terminal.SGR_SUFFIX
45 NORMAL = _combine(Terminal.NORMAL)
46 GOOD = _combine(Terminal.FG_GREEN)
47 WARN = _combine(Terminal.FG_YELLOW)
48 BAD = _combine(Terminal.FG_RED)
49 HILITE = _combine(Terminal.BOLD, Terminal.FG_CYAN)
50 BRACKET = _combine(Terminal.BOLD, Terminal.FG_BLUE)
54 """Show an error |msg| then exit."""
55 print(f'{Color.BAD}{PROG}: error: {msg}{Color.NORMAL}', file=sys.stderr)
59 def git(args, **kwargs):
61 kwargs.setdefault('check', True)
62 kwargs.setdefault('stdout', subprocess.PIPE)
63 kwargs.setdefault('stderr', subprocess.STDOUT)
64 kwargs.setdefault('encoding', 'utf-8')
65 #print('+', 'git', *args)
66 return subprocess.run(['git'] + args, **kwargs)
69 @functools.lru_cache(maxsize=None)
70 def checkout_is_dirty():
71 """Determine whether the checkout is dirty (e.g. modified files)."""
72 output = git(['status', '--porcelain']).stdout
73 return any(x for x in output.splitlines() if '?' not in x[0:2])
76 @functools.lru_cache(maxsize=None)
77 def rebase_inprogress():
78 """Determine whether a rebase is already in progress."""
79 output = git(['rev-parse', '--git-path', 'rebase-merge']).stdout.strip()
80 if Path(output).exists():
83 output = git(['rev-parse', '--git-path', 'rebase-apply']).stdout.strip()
84 if Path(output).exists():
90 class AppendOption(argparse.Action):
91 """Append the command line option (with no arguments) to dest.
93 parser.add_argument('-b', '--barg', dest='out', action='append_option')
94 options = parser.parse_args(['-b', '--barg'])
95 options.out == ['-b', '--barg']
98 def __init__(self, option_strings, dest, **kwargs):
100 raise ValueError('nargs is not supported for append_option action')
101 super().__init__(option_strings, dest, nargs=0, **kwargs)
103 def __call__(self, parser, namespace, values, option_string=None):
104 if getattr(namespace, self.dest, None) is None:
105 setattr(namespace, self.dest, [])
106 getattr(namespace, self.dest).append(option_string)
110 """Get CLI parser."""
111 parser = argparse.ArgumentParser(description=__doc__)
113 '--catchup', action='store_true',
114 help='run git-rb-catchup when rebasing')
116 '-q', '--quiet', dest='git_options', action=AppendOption, default=['-q'],
117 help='passthru to git rebase')
122 """The main entry point for scripts."""
123 parser = get_parser()
124 opts = parser.parse_args(argv)
126 # Skip if rebase is in progress.
127 if rebase_inprogress():
128 fatal('skipping due to active rebase')
130 # Switch to the top dir in case the working dir doesn't exist in every branch.
131 topdir = git(['rev-parse', '--show-toplevel']).stdout.strip()
135 # ||m|refs/remotes/origin/master|ahead 2, behind 203
136 # *||master|refs/remotes/origin/master|ahead 1
137 # |/usr/local/src/gnu/gdb/build/release|release||behind 10
140 ['for-each-ref', '--format=%(HEAD)|%(worktreepath)|%(refname:short)|%(upstream)|%(upstream:track,nobracket)',
141 'refs/heads/*']).stdout.splitlines()
147 head, worktreepath, branch, tracking, ahead_behind = line.split('|')
148 branch_width = max(branch_width, len(branch))
151 if not (worktreepath and worktreepath != topdir):
153 # If there are no branches to rebase, go silently.
157 fatal('unable to resolve current branch')
159 switched_head = False
162 _, worktreepath, branch, tracking, ahead_behind = line.split('|')
164 # If it's a branch in another worktree, ignore it.
165 if worktreepath and worktreepath != topdir:
168 print(f'{Color.BRACKET}### {Color.GOOD}{branch:{branch_width}}{Color.NORMAL} ',
171 print(f'{Color.WARN}skipping{Color.NORMAL} due to missing merge branch')
174 m = re.match(r'ahead ([0-9]+)', ahead_behind)
175 ahead = int(m.group(1)) if m else 0
176 m = re.search(r'behind ([0-9]+)', ahead_behind)
177 behind = int(m.group(1)) if m else 0
182 # If we haven't switched the checkout, update-ref on current HEAD
183 # will get us into a dirty checkout, so use merge to handle it.
184 if switched_head or curr_state != branch:
185 git(['update-ref', f'refs/heads/{branch}', tracking])
186 print('fast forwarded [updated ref]')
188 result = git(['merge', '-q', '--ff-only'], check=False)
189 if result.returncode:
190 print(f'{Color.BAD}unable to merge{Color.NORMAL}\n' + result.stdout.strip())
192 print('fast forwarded [merged]')
195 if checkout_is_dirty():
196 print(f'{Color.BAD}unable to rebase: tree is dirty{Color.NORMAL}')
199 print(f'rebasing [{ahead_behind}] ', end='', flush=True)
200 git(['checkout', '-q', branch])
204 result = git(['rb-catchup'], capture_output=False, check=False)
206 result = git(['rebase'] + opts.git_options, check=False)
207 if result.returncode:
208 git(['rebase', '--abort'])
209 print(f'{Color.BAD}failed{Color.NORMAL}\n' + result.stdout.strip())
214 git(['checkout', '-q', curr_state])
218 if __name__ == '__main__':
219 sys.exit(main(sys.argv[1:]))