Mercurial > hg > mercurial-crew-with-dirclash
view hgext/alias.py @ 5378:8a2915f57dfc
convert: add a mode where mercurial_sink skips empty revisions.
The getchanges function of some converter_source classes can return
some false positives. I.e. they sometimes claim that a file "foo"
was changed in some revision, even though its contents are still the
same.
convert_svn is particularly bad, but I think this can also happen with
convert_cvs and, at least in theory, with mercurial_source.
For regular conversions this is not really a problem - as long as
getfile returns the right contents, we'll get a converted revision
with the right contents. But when we use --filemap, this could lead
to superfluous revisions being converted.
Instead of fixing every converter_source, I decided to change
mercurial_sink to work around this problem.
When --filemap is used, we're interested only in revisions that touch
some specific files. If a revision doesn't change any of these files,
then we're not interested in it (at least for revisions with a single
parent; merges are special).
For mercurial_sink, we abuse this property and rollback a commit if
the manifest text hasn't changed. This avoids duplicating the logic
from localrepo.filecommit to detect unchanged files.
author | Alexis S. L. Carvalho <alexis@cecm.usp.br> |
---|---|
date | Thu, 04 Oct 2007 23:21:37 -0300 |
parents | 18a9fbb5cd78 |
children |
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# Copyright (C) 2007 Brendan Cully <brendan@kublai.com> # This file is published under the GNU GPL. '''allow user-defined command aliases To use, create entries in your hgrc of the form [alias] mycmd = cmd --args ''' from mercurial.cmdutil import findcmd, UnknownCommand, AmbiguousCommand from mercurial import commands cmdtable = {} class RecursiveCommand(Exception): pass class lazycommand(object): '''defer command lookup until needed, so that extensions loaded after alias can be aliased''' def __init__(self, ui, name, target): self._ui = ui self._name = name self._target = target self._cmd = None def __len__(self): self._resolve() return len(self._cmd) def __getitem__(self, key): self._resolve() return self._cmd[key] def __iter__(self): self._resolve() return self._cmd.__iter__() def _resolve(self): if self._cmd is not None: return try: self._cmd = findcmd(self._ui, self._target, commands.table)[1] if self._cmd == self: raise RecursiveCommand() if self._target in commands.norepo.split(' '): commands.norepo += ' %s' % self._name return except UnknownCommand: msg = '*** [alias] %s: command %s is unknown' % \ (self._name, self._target) except AmbiguousCommand: msg = '*** [alias] %s: command %s is ambiguous' % \ (self._name, self._target) except RecursiveCommand: msg = '*** [alias] %s: circular dependency on %s' % \ (self._name, self._target) def nocmd(*args, **opts): self._ui.warn(msg + '\n') return 1 nocmd.__doc__ = msg self._cmd = (nocmd, [], '') commands.norepo += ' %s' % self._name def uisetup(ui): for cmd, target in ui.configitems('alias'): if not target: ui.warn('*** [alias] %s: no definition\n' % cmd) continue args = target.split(' ') tcmd = args.pop(0) if args: ui.setconfig('defaults', cmd, ' '.join(args)) cmdtable[cmd] = lazycommand(ui, cmd, tcmd)