Mercurial > hg
view contrib/simplemerge @ 50004:3c34a224c232
locking: take the `wlock` for the full `hg add` duration
Otherwise, there is a race condition window between the time we resolve the
file to add with the matcher and the time we lock the repo and modify the
dirstate.
For example, the working copy might have been updated away, or purged, and the
matched files would no longer be correct.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Tue, 13 Dec 2022 04:21:27 +0100 |
parents | 6000f5b25c9b |
children |
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#!/usr/bin/env python3 import getopt import sys import hgdemandimport hgdemandimport.enable() from mercurial.i18n import _ from mercurial import ( context, error, fancyopts, simplemerge, ui as uimod, util, ) from mercurial.utils import procutil, stringutil options = [ (b'L', b'label', [], _(b'labels to use on conflict markers')), (b'a', b'text', None, _(b'treat all files as text')), (b'p', b'print', None, _(b'print results instead of overwriting LOCAL')), (b'', b'no-minimal', None, _(b'no effect (DEPRECATED)')), (b'h', b'help', None, _(b'display help and exit')), (b'q', b'quiet', None, _(b'suppress output')), ] usage = _( b'''simplemerge [OPTS] LOCAL BASE OTHER Simple three-way file merge utility with a minimal feature set. Apply to LOCAL the changes necessary to go from BASE to OTHER. By default, LOCAL is overwritten with the results of this operation. ''' ) class ParseError(Exception): """Exception raised on errors in parsing the command line.""" def showhelp(): procutil.stdout.write(usage) procutil.stdout.write(b'\noptions:\n') out_opts = [] for shortopt, longopt, default, desc in options: out_opts.append( ( b'%2s%s' % ( shortopt and b'-%s' % shortopt, longopt and b' --%s' % longopt, ), b'%s' % desc, ) ) opts_len = max([len(opt[0]) for opt in out_opts]) for first, second in out_opts: procutil.stdout.write(b' %-*s %s\n' % (opts_len, first, second)) def _verifytext(input, ui, quiet=False, allow_binary=False): """verifies that text is non-binary (unless opts[text] is passed, then we just warn)""" if stringutil.binary(input.text()): msg = _(b"%s looks like a binary file.") % input.fctx.path() if not quiet: ui.warn(_(b'warning: %s\n') % msg) if not allow_binary: sys.exit(1) try: for fp in (sys.stdin, procutil.stdout, sys.stderr): procutil.setbinary(fp) opts = {} try: bargv = [a.encode('utf8') for a in sys.argv[1:]] args = fancyopts.fancyopts(bargv, options, opts) except getopt.GetoptError as e: raise ParseError(e) if opts[b'help']: showhelp() sys.exit(0) if len(args) != 3: raise ParseError(_(b'wrong number of arguments').decode('utf8')) mode = b'merge' if len(opts[b'label']) > 2: mode = b'merge3' local, base, other = args overrides = opts[b'label'] if len(overrides) > 3: raise error.InputError(b'can only specify three labels.') labels = [local, other, base] labels[: len(overrides)] = overrides local_input = simplemerge.MergeInput( context.arbitraryfilectx(local), labels[0] ) other_input = simplemerge.MergeInput( context.arbitraryfilectx(other), labels[1] ) base_input = simplemerge.MergeInput( context.arbitraryfilectx(base), labels[2] ) quiet = opts.get(b'quiet') allow_binary = opts.get(b'text') ui = uimod.ui.load() _verifytext(local_input, ui, quiet=quiet, allow_binary=allow_binary) _verifytext(base_input, ui, quiet=quiet, allow_binary=allow_binary) _verifytext(other_input, ui, quiet=quiet, allow_binary=allow_binary) merged_text, conflicts = simplemerge.simplemerge( local_input, base_input, other_input, mode, allow_binary=allow_binary, ) if opts.get(b'print'): ui.fout.write(merged_text) else: util.writefile(local, merged_text) sys.exit(1 if conflicts else 0) except ParseError as e: e = stringutil.forcebytestr(e) procutil.stdout.write(b"%s: %s\n" % (sys.argv[0].encode('utf8'), e)) showhelp() sys.exit(1) except error.Abort as e: procutil.stderr.write(b"abort: %s\n" % e) sys.exit(255) except KeyboardInterrupt: sys.exit(255)