name : git-set-file-times #!/usr/bin/env python3 import os, re, argparse, subprocess from datetime import datetime NULL_COMMIT_RE = re.compile(r'\0\0commit [a-f0-9]{40}$|\0$') def main(): if not args.git_dir: cmd = 'git rev-parse --show-toplevel 2>/dev/null || echo .' top_dir = subprocess.check_output(cmd, shell=True, encoding='utf-8').strip() args.git_dir = os.path.join(top_dir, '.git') if not args.prefix: os.chdir(top_dir) git = [ 'git', '--git-dir=' + args.git_dir ] if args.tree: cmd = git + 'ls-tree -z -r --name-only'.split() + [ args.tree ] else: cmd = git + 'ls-files -z'.split() proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, encoding='utf-8') out = proc.communicate()[0] ls = set(out.split('\0')) ls.discard('') if not args.tree: # All modified files keep their current mtime. proc = subprocess.Popen(git + 'status -z --no-renames'.split(), stdout=subprocess.PIPE, encoding='utf-8') out = proc.communicate()[0] for fn in out.split('\0'): if fn == '' or (fn[0] != 'M' and fn[1] != 'M'): continue fn = fn[3:] if args.list: mtime = os.lstat(fn).st_mtime print_line(fn, mtime, mtime) ls.discard(fn) cmd = git + 'log -r --name-only --format=%x00commit%x20%H%n%x00commit_time%x20%ct%n --no-renames -z'.split() if args.tree: cmd.append(args.tree) cmd += ['--'] + args.files proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, encoding='utf-8') for line in proc.stdout: line = line.strip() m = re.match(r'^\0commit_time (\d+)$', line) if m: commit_time = int(m[1]) elif NULL_COMMIT_RE.search(line): line = NULL_COMMIT_RE.sub('', line) files = set(fn for fn in line.split('\0') if fn in ls) if not files: continue for fn in files: if args.prefix: fn = args.prefix + fn mtime = os.lstat(fn).st_mtime if args.list: print_line(fn, mtime, commit_time) elif mtime != commit_time: if not args.quiet: print(f"Setting {fn}") os.utime(fn, (commit_time, commit_time), follow_symlinks = False) ls -= files if not ls: break proc.communicate() def print_line(fn, mtime, commit_time): if args.list > 1: ts = str(commit_time).rjust(10) else: ts = datetime.utcfromtimestamp(commit_time).strftime("%Y-%m-%d %H:%M:%S") chg = '.' if mtime == commit_time else '*' print(chg, ts, fn) if __name__ == '__main__': parser = argparse.ArgumentParser(description="Set the times of the files in the current git checkout to their last-changed time.", add_help=False) parser.add_argument('--git-dir', metavar='GIT_DIR', help="The git dir to query (defaults to affecting the current git checkout).") parser.add_argument('--tree', metavar='TREE-ISH', help="The tree-ish to query (defaults to the current branch).") parser.add_argument('--prefix', metavar='PREFIX_STR', help="Prepend the PREFIX_STR to each filename we tweak (defaults to the top of current checkout).") parser.add_argument('--quiet', '-q', action='store_true', help="Don't output the changed-file information.") parser.add_argument('--list', '-l', action='count', help="List files & times instead of changing them. Repeat for Unix timestamp instead of human readable.") parser.add_argument('files', metavar='FILE', nargs='*', help="Specify a subset of checked-out files to tweak.") parser.add_argument("--help", "-h", action="help", help="Output this help message and exit.") args = parser.parse_args() main() # vim: sw=4 et