Mercurial > hg
view hgext/alias.py @ 7012:78341ea65d16
restructure helptable
When looking up a help topic, the key is now only matched against the
short names for each topic, and not the header. So
hg help 'Environment Variables'
must be replaced with
hg help env
author | Martin Geisler <mg@daimi.au.dk> |
---|---|
date | Tue, 09 Sep 2008 21:32:39 +0200 |
parents | f7d545a866e8 |
children | b4c035057d34 |
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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 from mercurial.i18n import _ 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)