Mercurial > hg
view mercurial/hook.py @ 7593:9811cc670c51
cvsps: cvs log loop uses lookahead to avoid misleading text
Changes cvsps.py's cvs log reader to use a one-line lookahead, so
that possibly misleading log messages can be disambiguated. In
particular I have past committers who used cvs log's 28-character
row of hyphens within commit messages; this throws cvsps and disrupts
conversion. The only alternative in this case is to edit the cvs
,v file by hand, which bloodies mercurial's "don't change history"
principle.
author | David Champion <dgc@uchicago.edu> |
---|---|
date | Sun, 04 Jan 2009 01:43:12 -0600 |
parents | 196b05a548d0 |
children | 182b7114d35a |
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# hook.py - hook support for mercurial # # Copyright 2007 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms # of the GNU General Public License, incorporated herein by reference. from i18n import _ import util, os, sys def _pythonhook(ui, repo, name, hname, funcname, args, throw): '''call python hook. hook is callable object, looked up as name in python module. if callable returns "true", hook fails, else passes. if hook raises exception, treated as hook failure. exception propagates if throw is "true". reason for "true" meaning "hook failed" is so that unmodified commands (e.g. mercurial.commands.update) can be run as hooks without wrappers to convert return values.''' ui.note(_("calling hook %s: %s\n") % (hname, funcname)) obj = funcname if not callable(obj): d = funcname.rfind('.') if d == -1: raise util.Abort(_('%s hook is invalid ("%s" not in ' 'a module)') % (hname, funcname)) modname = funcname[:d] try: obj = __import__(modname) except ImportError: try: # extensions are loaded with hgext_ prefix obj = __import__("hgext_%s" % modname) except ImportError: raise util.Abort(_('%s hook is invalid ' '(import of "%s" failed)') % (hname, modname)) try: for p in funcname.split('.')[1:]: obj = getattr(obj, p) except AttributeError: raise util.Abort(_('%s hook is invalid ' '("%s" is not defined)') % (hname, funcname)) if not callable(obj): raise util.Abort(_('%s hook is invalid ' '("%s" is not callable)') % (hname, funcname)) try: r = obj(ui=ui, repo=repo, hooktype=name, **args) except (KeyboardInterrupt, util.SignalInterrupt): raise except Exception, exc: if isinstance(exc, util.Abort): ui.warn(_('error: %s hook failed: %s\n') % (hname, exc.args[0])) else: ui.warn(_('error: %s hook raised an exception: ' '%s\n') % (hname, exc)) if throw: raise ui.print_exc() return True if r: if throw: raise util.Abort(_('%s hook failed') % hname) ui.warn(_('warning: %s hook failed\n') % hname) return r def _exthook(ui, repo, name, cmd, args, throw): ui.note(_("running hook %s: %s\n") % (name, cmd)) env = dict([('HG_' + k.upper(), v) for k, v in args.iteritems()]) if repo: cwd = repo.root else: cwd = os.getcwd() r = util.system(cmd, environ=env, cwd=cwd) if r: desc, r = util.explain_exit(r) if throw: raise util.Abort(_('%s hook %s') % (name, desc)) ui.warn(_('warning: %s hook %s\n') % (name, desc)) return r _redirect = False def redirect(state): global _redirect _redirect = state def hook(ui, repo, name, throw=False, **args): r = False if _redirect: # temporarily redirect stdout to stderr oldstdout = os.dup(sys.__stdout__.fileno()) os.dup2(sys.__stderr__.fileno(), sys.__stdout__.fileno()) try: for hname, cmd in util.sort(ui.configitems('hooks')): if hname.split('.')[0] != name or not cmd: continue if callable(cmd): r = _pythonhook(ui, repo, name, hname, cmd, args, throw) or r elif cmd.startswith('python:'): r = _pythonhook(ui, repo, name, hname, cmd[7:].strip(), args, throw) or r else: r = _exthook(ui, repo, hname, cmd, args, throw) or r finally: if _redirect: os.dup2(oldstdout, sys.__stdout__.fileno()) os.close(oldstdout) return r