Mercurial > hg
view mercurial/dispatch.py @ 33822:42ad7cc645a4
copies: add more details to the documentation of mergecopies()
This documentation is very helpful for any developer to understand what
copytracing is and what the function does. Since this is the main function of
doing copytracing, I have also included bits about copytracing in it.
This additions are picked from a doc by Stash@Fb. So thanks to him.
Differential Revision: https://phab.mercurial-scm.org/D409
author | Pulkit Goyal <7895pulkit@gmail.com> |
---|---|
date | Wed, 16 Aug 2017 00:25:20 +0530 |
parents | cc047a733f69 |
children | d5b2beca16c0 |
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# dispatch.py - command dispatching for mercurial # # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import, print_function import difflib import errno import getopt import os import pdb import re import signal import sys import time import traceback from .i18n import _ from . import ( cmdutil, color, commands, demandimport, encoding, error, extensions, fancyopts, help, hg, hook, profiling, pycompat, scmutil, ui as uimod, util, ) class request(object): def __init__(self, args, ui=None, repo=None, fin=None, fout=None, ferr=None, prereposetups=None): self.args = args self.ui = ui self.repo = repo # input/output/error streams self.fin = fin self.fout = fout self.ferr = ferr # reposetups which run before extensions, useful for chg to pre-fill # low-level repo state (for example, changelog) before extensions. self.prereposetups = prereposetups or [] def _runexithandlers(self): exc = None handlers = self.ui._exithandlers try: while handlers: func, args, kwargs = handlers.pop() try: func(*args, **kwargs) except: # re-raises below if exc is None: exc = sys.exc_info()[1] self.ui.warn(('error in exit handlers:\n')) self.ui.traceback(force=True) finally: if exc is not None: raise exc def run(): "run the command in sys.argv" req = request(pycompat.sysargv[1:]) err = None try: status = (dispatch(req) or 0) & 255 except error.StdioError as err: status = -1 if util.safehasattr(req.ui, 'fout'): try: req.ui.fout.flush() except IOError as err: status = -1 if util.safehasattr(req.ui, 'ferr'): if err is not None and err.errno != errno.EPIPE: req.ui.ferr.write('abort: %s\n' % err.strerror) req.ui.ferr.flush() sys.exit(status & 255) def _getsimilar(symbols, value): sim = lambda x: difflib.SequenceMatcher(None, value, x).ratio() # The cutoff for similarity here is pretty arbitrary. It should # probably be investigated and tweaked. return [s for s in symbols if sim(s) > 0.6] def _reportsimilar(write, similar): if len(similar) == 1: write(_("(did you mean %s?)\n") % similar[0]) elif similar: ss = ", ".join(sorted(similar)) write(_("(did you mean one of %s?)\n") % ss) def _formatparse(write, inst): similar = [] if isinstance(inst, error.UnknownIdentifier): # make sure to check fileset first, as revset can invoke fileset similar = _getsimilar(inst.symbols, inst.function) if len(inst.args) > 1: write(_("hg: parse error at %s: %s\n") % (inst.args[1], inst.args[0])) if (inst.args[0][0] == ' '): write(_("unexpected leading whitespace\n")) else: write(_("hg: parse error: %s\n") % inst.args[0]) _reportsimilar(write, similar) if inst.hint: write(_("(%s)\n") % inst.hint) def _formatargs(args): return ' '.join(util.shellquote(a) for a in args) def dispatch(req): "run the command specified in req.args" if req.ferr: ferr = req.ferr elif req.ui: ferr = req.ui.ferr else: ferr = util.stderr try: if not req.ui: req.ui = uimod.ui.load() if '--traceback' in req.args: req.ui.setconfig('ui', 'traceback', 'on', '--traceback') # set ui streams from the request if req.fin: req.ui.fin = req.fin if req.fout: req.ui.fout = req.fout if req.ferr: req.ui.ferr = req.ferr except error.Abort as inst: ferr.write(_("abort: %s\n") % inst) if inst.hint: ferr.write(_("(%s)\n") % inst.hint) return -1 except error.ParseError as inst: _formatparse(ferr.write, inst) return -1 msg = _formatargs(req.args) starttime = util.timer() ret = None try: ret = _runcatch(req) except error.ProgrammingError as inst: req.ui.warn(_('** ProgrammingError: %s\n') % inst) if inst.hint: req.ui.warn(_('** (%s)\n') % inst.hint) raise except KeyboardInterrupt as inst: try: if isinstance(inst, error.SignalInterrupt): msg = _("killed!\n") else: msg = _("interrupted!\n") req.ui.warn(msg) except error.SignalInterrupt: # maybe pager would quit without consuming all the output, and # SIGPIPE was raised. we cannot print anything in this case. pass except IOError as inst: if inst.errno != errno.EPIPE: raise ret = -1 finally: duration = util.timer() - starttime req.ui.flush() if req.ui.logblockedtimes: req.ui._blockedtimes['command_duration'] = duration * 1000 req.ui.log('uiblocked', 'ui blocked ms', **req.ui._blockedtimes) req.ui.log("commandfinish", "%s exited %d after %0.2f seconds\n", msg, ret or 0, duration) try: req._runexithandlers() except: # exiting, so no re-raises ret = ret or -1 return ret def _runcatch(req): def catchterm(*args): raise error.SignalInterrupt ui = req.ui try: for name in 'SIGBREAK', 'SIGHUP', 'SIGTERM': num = getattr(signal, name, None) if num: signal.signal(num, catchterm) except ValueError: pass # happens if called in a thread def _runcatchfunc(): realcmd = None try: cmdargs = fancyopts.fancyopts(req.args[:], commands.globalopts, {}) cmd = cmdargs[0] aliases, entry = cmdutil.findcmd(cmd, commands.table, False) realcmd = aliases[0] except (error.UnknownCommand, error.AmbiguousCommand, IndexError, getopt.GetoptError): # Don't handle this here. We know the command is # invalid, but all we're worried about for now is that # it's not a command that server operators expect to # be safe to offer to users in a sandbox. pass if realcmd == 'serve' and '--stdio' in cmdargs: # We want to constrain 'hg serve --stdio' instances pretty # closely, as many shared-ssh access tools want to grant # access to run *only* 'hg -R $repo serve --stdio'. We # restrict to exactly that set of arguments, and prohibit # any repo name that starts with '--' to prevent # shenanigans wherein a user does something like pass # --debugger or --config=ui.debugger=1 as a repo # name. This used to actually run the debugger. if (len(req.args) != 4 or req.args[0] != '-R' or req.args[1].startswith('--') or req.args[2] != 'serve' or req.args[3] != '--stdio'): raise error.Abort( _('potentially unsafe serve --stdio invocation: %r') % (req.args,)) try: debugger = 'pdb' debugtrace = { 'pdb' : pdb.set_trace } debugmortem = { 'pdb' : pdb.post_mortem } # read --config before doing anything else # (e.g. to change trust settings for reading .hg/hgrc) cfgs = _parseconfig(req.ui, _earlygetopt(['--config'], req.args)) if req.repo: # copy configs that were passed on the cmdline (--config) to # the repo ui for sec, name, val in cfgs: req.repo.ui.setconfig(sec, name, val, source='--config') # developer config: ui.debugger debugger = ui.config("ui", "debugger") debugmod = pdb if not debugger or ui.plain(): # if we are in HGPLAIN mode, then disable custom debugging debugger = 'pdb' elif '--debugger' in req.args: # This import can be slow for fancy debuggers, so only # do it when absolutely necessary, i.e. when actual # debugging has been requested with demandimport.deactivated(): try: debugmod = __import__(debugger) except ImportError: pass # Leave debugmod = pdb debugtrace[debugger] = debugmod.set_trace debugmortem[debugger] = debugmod.post_mortem # enter the debugger before command execution if '--debugger' in req.args: ui.warn(_("entering debugger - " "type c to continue starting hg or h for help\n")) if (debugger != 'pdb' and debugtrace[debugger] == debugtrace['pdb']): ui.warn(_("%s debugger specified " "but its module was not found\n") % debugger) with demandimport.deactivated(): debugtrace[debugger]() try: return _dispatch(req) finally: ui.flush() except: # re-raises # enter the debugger when we hit an exception if '--debugger' in req.args: traceback.print_exc() debugmortem[debugger](sys.exc_info()[2]) raise return _callcatch(ui, _runcatchfunc) def _callcatch(ui, func): """like scmutil.callcatch but handles more high-level exceptions about config parsing and commands. besides, use handlecommandexception to handle uncaught exceptions. """ try: return scmutil.callcatch(ui, func) except error.AmbiguousCommand as inst: ui.warn(_("hg: command '%s' is ambiguous:\n %s\n") % (inst.args[0], " ".join(inst.args[1]))) except error.CommandError as inst: if inst.args[0]: ui.pager('help') msgbytes = pycompat.bytestr(inst.args[1]) ui.warn(_("hg %s: %s\n") % (inst.args[0], msgbytes)) commands.help_(ui, inst.args[0], full=False, command=True) else: ui.pager('help') ui.warn(_("hg: %s\n") % inst.args[1]) commands.help_(ui, 'shortlist') except error.ParseError as inst: _formatparse(ui.warn, inst) return -1 except error.UnknownCommand as inst: nocmdmsg = _("hg: unknown command '%s'\n") % inst.args[0] try: # check if the command is in a disabled extension # (but don't check for extensions themselves) formatted = help.formattedhelp(ui, commands, inst.args[0], unknowncmd=True) ui.warn(nocmdmsg) ui.write(formatted) except (error.UnknownCommand, error.Abort): suggested = False if len(inst.args) == 2: sim = _getsimilar(inst.args[1], inst.args[0]) if sim: ui.warn(nocmdmsg) _reportsimilar(ui.warn, sim) suggested = True if not suggested: ui.pager('help') ui.warn(nocmdmsg) commands.help_(ui, 'shortlist') except IOError: raise except KeyboardInterrupt: raise except: # probably re-raises if not handlecommandexception(ui): raise return -1 def aliasargs(fn, givenargs): args = getattr(fn, 'args', []) if args: cmd = ' '.join(map(util.shellquote, args)) nums = [] def replacer(m): num = int(m.group(1)) - 1 nums.append(num) if num < len(givenargs): return givenargs[num] raise error.Abort(_('too few arguments for command alias')) cmd = re.sub(br'\$(\d+|\$)', replacer, cmd) givenargs = [x for i, x in enumerate(givenargs) if i not in nums] args = pycompat.shlexsplit(cmd) return args + givenargs def aliasinterpolate(name, args, cmd): '''interpolate args into cmd for shell aliases This also handles $0, $@ and "$@". ''' # util.interpolate can't deal with "$@" (with quotes) because it's only # built to match prefix + patterns. replacemap = dict(('$%d' % (i + 1), arg) for i, arg in enumerate(args)) replacemap['$0'] = name replacemap['$$'] = '$' replacemap['$@'] = ' '.join(args) # Typical Unix shells interpolate "$@" (with quotes) as all the positional # parameters, separated out into words. Emulate the same behavior here by # quoting the arguments individually. POSIX shells will then typically # tokenize each argument into exactly one word. replacemap['"$@"'] = ' '.join(util.shellquote(arg) for arg in args) # escape '\$' for regex regex = '|'.join(replacemap.keys()).replace('$', r'\$') r = re.compile(regex) return r.sub(lambda x: replacemap[x.group()], cmd) class cmdalias(object): def __init__(self, name, definition, cmdtable, source): self.name = self.cmd = name self.cmdname = '' self.definition = definition self.fn = None self.givenargs = [] self.opts = [] self.help = '' self.badalias = None self.unknowncmd = False self.source = source try: aliases, entry = cmdutil.findcmd(self.name, cmdtable) for alias, e in cmdtable.iteritems(): if e is entry: self.cmd = alias break self.shadows = True except error.UnknownCommand: self.shadows = False if not self.definition: self.badalias = _("no definition for alias '%s'") % self.name return if self.definition.startswith('!'): self.shell = True def fn(ui, *args): env = {'HG_ARGS': ' '.join((self.name,) + args)} def _checkvar(m): if m.groups()[0] == '$': return m.group() elif int(m.groups()[0]) <= len(args): return m.group() else: ui.debug("No argument found for substitution " "of %i variable in alias '%s' definition." % (int(m.groups()[0]), self.name)) return '' cmd = re.sub(r'\$(\d+|\$)', _checkvar, self.definition[1:]) cmd = aliasinterpolate(self.name, args, cmd) return ui.system(cmd, environ=env, blockedtag='alias_%s' % self.name) self.fn = fn return try: args = pycompat.shlexsplit(self.definition) except ValueError as inst: self.badalias = (_("error in definition for alias '%s': %s") % (self.name, inst)) return self.cmdname = cmd = args.pop(0) self.givenargs = args for invalidarg in ("--cwd", "-R", "--repository", "--repo", "--config"): if _earlygetopt([invalidarg], args): self.badalias = (_("error in definition for alias '%s': %s may " "only be given on the command line") % (self.name, invalidarg)) return try: tableentry = cmdutil.findcmd(cmd, cmdtable, False)[1] if len(tableentry) > 2: self.fn, self.opts, self.help = tableentry else: self.fn, self.opts = tableentry if self.help.startswith("hg " + cmd): # drop prefix in old-style help lines so hg shows the alias self.help = self.help[4 + len(cmd):] self.__doc__ = self.fn.__doc__ except error.UnknownCommand: self.badalias = (_("alias '%s' resolves to unknown command '%s'") % (self.name, cmd)) self.unknowncmd = True except error.AmbiguousCommand: self.badalias = (_("alias '%s' resolves to ambiguous command '%s'") % (self.name, cmd)) @property def args(self): args = pycompat.maplist(util.expandpath, self.givenargs) return aliasargs(self.fn, args) def __getattr__(self, name): adefaults = {r'norepo': True, r'optionalrepo': False, r'inferrepo': False} if name not in adefaults: raise AttributeError(name) if self.badalias or util.safehasattr(self, 'shell'): return adefaults[name] return getattr(self.fn, name) def __call__(self, ui, *args, **opts): if self.badalias: hint = None if self.unknowncmd: try: # check if the command is in a disabled extension cmd, ext = extensions.disabledcmd(ui, self.cmdname)[:2] hint = _("'%s' is provided by '%s' extension") % (cmd, ext) except error.UnknownCommand: pass raise error.Abort(self.badalias, hint=hint) if self.shadows: ui.debug("alias '%s' shadows command '%s'\n" % (self.name, self.cmdname)) ui.log('commandalias', "alias '%s' expands to '%s'\n", self.name, self.definition) if util.safehasattr(self, 'shell'): return self.fn(ui, *args, **opts) else: try: return util.checksignature(self.fn)(ui, *args, **opts) except error.SignatureError: args = ' '.join([self.cmdname] + self.args) ui.debug("alias '%s' expands to '%s'\n" % (self.name, args)) raise def addaliases(ui, cmdtable): # aliases are processed after extensions have been loaded, so they # may use extension commands. Aliases can also use other alias definitions, # but only if they have been defined prior to the current definition. for alias, definition in ui.configitems('alias'): source = ui.configsource('alias', alias) aliasdef = cmdalias(alias, definition, cmdtable, source) try: olddef = cmdtable[aliasdef.cmd][0] if olddef.definition == aliasdef.definition: continue except (KeyError, AttributeError): # definition might not exist or it might not be a cmdalias pass cmdtable[aliasdef.name] = (aliasdef, aliasdef.opts, aliasdef.help) def _parse(ui, args): options = {} cmdoptions = {} try: args = fancyopts.fancyopts(args, commands.globalopts, options) except getopt.GetoptError as inst: raise error.CommandError(None, inst) if args: cmd, args = args[0], args[1:] aliases, entry = cmdutil.findcmd(cmd, commands.table, ui.configbool("ui", "strict")) cmd = aliases[0] args = aliasargs(entry[0], args) defaults = ui.config("defaults", cmd) if defaults: args = pycompat.maplist( util.expandpath, pycompat.shlexsplit(defaults)) + args c = list(entry[1]) else: cmd = None c = [] # combine global options into local for o in commands.globalopts: c.append((o[0], o[1], options[o[1]], o[3])) try: args = fancyopts.fancyopts(args, c, cmdoptions, gnu=True) except getopt.GetoptError as inst: raise error.CommandError(cmd, inst) # separate global options back out for o in commands.globalopts: n = o[1] options[n] = cmdoptions[n] del cmdoptions[n] return (cmd, cmd and entry[0] or None, args, options, cmdoptions) def _parseconfig(ui, config): """parse the --config options from the command line""" configs = [] for cfg in config: try: name, value = [cfgelem.strip() for cfgelem in cfg.split('=', 1)] section, name = name.split('.', 1) if not section or not name: raise IndexError ui.setconfig(section, name, value, '--config') configs.append((section, name, value)) except (IndexError, ValueError): raise error.Abort(_('malformed --config option: %r ' '(use --config section.name=value)') % cfg) return configs def _earlygetopt(aliases, args): """Return list of values for an option (or aliases). The values are listed in the order they appear in args. The options and values are removed from args. >>> args = ['x', '--cwd', 'foo', 'y'] >>> _earlygetopt(['--cwd'], args), args (['foo'], ['x', 'y']) >>> args = ['x', '--cwd=bar', 'y'] >>> _earlygetopt(['--cwd'], args), args (['bar'], ['x', 'y']) >>> args = ['x', '-R', 'foo', 'y'] >>> _earlygetopt(['-R'], args), args (['foo'], ['x', 'y']) >>> args = ['x', '-Rbar', 'y'] >>> _earlygetopt(['-R'], args), args (['bar'], ['x', 'y']) """ try: argcount = args.index("--") except ValueError: argcount = len(args) shortopts = [opt for opt in aliases if len(opt) == 2] values = [] pos = 0 while pos < argcount: fullarg = arg = args[pos] equals = arg.find('=') if equals > -1: arg = arg[:equals] if arg in aliases: del args[pos] if equals > -1: values.append(fullarg[equals + 1:]) argcount -= 1 else: if pos + 1 >= argcount: # ignore and let getopt report an error if there is no value break values.append(args.pop(pos)) argcount -= 2 elif arg[:2] in shortopts: # short option can have no following space, e.g. hg log -Rfoo values.append(args.pop(pos)[2:]) argcount -= 1 else: pos += 1 return values def runcommand(lui, repo, cmd, fullargs, ui, options, d, cmdpats, cmdoptions): # run pre-hook, and abort if it fails hook.hook(lui, repo, "pre-%s" % cmd, True, args=" ".join(fullargs), pats=cmdpats, opts=cmdoptions) try: ret = _runcommand(ui, options, cmd, d) # run post-hook, passing command result hook.hook(lui, repo, "post-%s" % cmd, False, args=" ".join(fullargs), result=ret, pats=cmdpats, opts=cmdoptions) except Exception: # run failure hook and re-raise hook.hook(lui, repo, "fail-%s" % cmd, False, args=" ".join(fullargs), pats=cmdpats, opts=cmdoptions) raise return ret def _getlocal(ui, rpath, wd=None): """Return (path, local ui object) for the given target path. Takes paths in [cwd]/.hg/hgrc into account." """ if wd is None: try: wd = pycompat.getcwd() except OSError as e: raise error.Abort(_("error getting current working directory: %s") % e.strerror) path = cmdutil.findrepo(wd) or "" if not path: lui = ui else: lui = ui.copy() lui.readconfig(os.path.join(path, ".hg", "hgrc"), path) if rpath and rpath[-1]: path = lui.expandpath(rpath[-1]) lui = ui.copy() lui.readconfig(os.path.join(path, ".hg", "hgrc"), path) return path, lui def _checkshellalias(lui, ui, args): """Return the function to run the shell alias, if it is required""" options = {} try: args = fancyopts.fancyopts(args, commands.globalopts, options) except getopt.GetoptError: return if not args: return cmdtable = commands.table cmd = args[0] try: strict = ui.configbool("ui", "strict") aliases, entry = cmdutil.findcmd(cmd, cmdtable, strict) except (error.AmbiguousCommand, error.UnknownCommand): return cmd = aliases[0] fn = entry[0] if cmd and util.safehasattr(fn, 'shell'): d = lambda: fn(ui, *args[1:]) return lambda: runcommand(lui, None, cmd, args[:1], ui, options, d, [], {}) def _dispatch(req): args = req.args ui = req.ui # check for cwd cwd = _earlygetopt(['--cwd'], args) if cwd: os.chdir(cwd[-1]) rpath = _earlygetopt(["-R", "--repository", "--repo"], args) path, lui = _getlocal(ui, rpath) uis = {ui, lui} if req.repo: uis.add(req.repo.ui) if '--profile' in args: for ui_ in uis: ui_.setconfig('profiling', 'enabled', 'true', '--profile') profile = lui.configbool('profiling', 'enabled') with profiling.profile(lui, enabled=profile) as profiler: # Configure extensions in phases: uisetup, extsetup, cmdtable, and # reposetup extensions.loadall(lui) # Propagate any changes to lui.__class__ by extensions ui.__class__ = lui.__class__ # (uisetup and extsetup are handled in extensions.loadall) # (reposetup is handled in hg.repository) addaliases(lui, commands.table) # All aliases and commands are completely defined, now. # Check abbreviation/ambiguity of shell alias. shellaliasfn = _checkshellalias(lui, ui, args) if shellaliasfn: return shellaliasfn() # check for fallback encoding fallback = lui.config('ui', 'fallbackencoding') if fallback: encoding.fallbackencoding = fallback fullargs = args cmd, func, args, options, cmdoptions = _parse(lui, args) if options["config"]: raise error.Abort(_("option --config may not be abbreviated!")) if options["cwd"]: raise error.Abort(_("option --cwd may not be abbreviated!")) if options["repository"]: raise error.Abort(_( "option -R has to be separated from other options (e.g. not " "-qR) and --repository may only be abbreviated as --repo!")) if options["encoding"]: encoding.encoding = options["encoding"] if options["encodingmode"]: encoding.encodingmode = options["encodingmode"] if options["time"]: def get_times(): t = os.times() if t[4] == 0.0: # Windows leaves this as zero, so use time.clock() t = (t[0], t[1], t[2], t[3], time.clock()) return t s = get_times() def print_time(): t = get_times() ui.warn( _("time: real %.3f secs (user %.3f+%.3f sys %.3f+%.3f)\n") % (t[4]-s[4], t[0]-s[0], t[2]-s[2], t[1]-s[1], t[3]-s[3])) ui.atexit(print_time) if options["profile"]: profiler.start() if options['verbose'] or options['debug'] or options['quiet']: for opt in ('verbose', 'debug', 'quiet'): val = str(bool(options[opt])) if pycompat.ispy3: val = val.encode('ascii') for ui_ in uis: ui_.setconfig('ui', opt, val, '--' + opt) if options['traceback']: for ui_ in uis: ui_.setconfig('ui', 'traceback', 'on', '--traceback') if options['noninteractive']: for ui_ in uis: ui_.setconfig('ui', 'interactive', 'off', '-y') if cmdoptions.get('insecure', False): for ui_ in uis: ui_.insecureconnections = True # setup color handling before pager, because setting up pager # might cause incorrect console information coloropt = options['color'] for ui_ in uis: if coloropt: ui_.setconfig('ui', 'color', coloropt, '--color') color.setup(ui_) if util.parsebool(options['pager']): # ui.pager() expects 'internal-always-' prefix in this case ui.pager('internal-always-' + cmd) elif options['pager'] != 'auto': ui.disablepager() if options['version']: return commands.version_(ui) if options['help']: return commands.help_(ui, cmd, command=cmd is not None) elif not cmd: return commands.help_(ui, 'shortlist') repo = None cmdpats = args[:] if not func.norepo: # use the repo from the request only if we don't have -R if not rpath and not cwd: repo = req.repo if repo: # set the descriptors of the repo ui to those of ui repo.ui.fin = ui.fin repo.ui.fout = ui.fout repo.ui.ferr = ui.ferr else: try: repo = hg.repository(ui, path=path, presetupfuncs=req.prereposetups) if not repo.local(): raise error.Abort(_("repository '%s' is not local") % path) repo.ui.setconfig("bundle", "mainreporoot", repo.root, 'repo') except error.RequirementError: raise except error.RepoError: if rpath and rpath[-1]: # invalid -R path raise if not func.optionalrepo: if func.inferrepo and args and not path: # try to infer -R from command args repos = map(cmdutil.findrepo, args) guess = repos[0] if guess and repos.count(guess) == len(repos): req.args = ['--repository', guess] + fullargs return _dispatch(req) if not path: raise error.RepoError(_("no repository found in" " '%s' (.hg not found)") % pycompat.getcwd()) raise if repo: ui = repo.ui if options['hidden']: repo = repo.unfiltered() args.insert(0, repo) elif rpath: ui.warn(_("warning: --repository ignored\n")) msg = _formatargs(fullargs) ui.log("command", '%s\n', msg) strcmdopt = pycompat.strkwargs(cmdoptions) d = lambda: util.checksignature(func)(ui, *args, **strcmdopt) try: return runcommand(lui, repo, cmd, fullargs, ui, options, d, cmdpats, cmdoptions) finally: if repo and repo != req.repo: repo.close() def _runcommand(ui, options, cmd, cmdfunc): """Run a command function, possibly with profiling enabled.""" try: return cmdfunc() except error.SignatureError: raise error.CommandError(cmd, _('invalid arguments')) def _exceptionwarning(ui): """Produce a warning message for the current active exception""" # For compatibility checking, we discard the portion of the hg # version after the + on the assumption that if a "normal # user" is running a build with a + in it the packager # probably built from fairly close to a tag and anyone with a # 'make local' copy of hg (where the version number can be out # of date) will be clueful enough to notice the implausible # version number and try updating. ct = util.versiontuple(n=2) worst = None, ct, '' if ui.config('ui', 'supportcontact') is None: for name, mod in extensions.extensions(): testedwith = getattr(mod, 'testedwith', '') if pycompat.ispy3 and isinstance(testedwith, str): testedwith = testedwith.encode(u'utf-8') report = getattr(mod, 'buglink', _('the extension author.')) if not testedwith.strip(): # We found an untested extension. It's likely the culprit. worst = name, 'unknown', report break # Never blame on extensions bundled with Mercurial. if extensions.ismoduleinternal(mod): continue tested = [util.versiontuple(t, 2) for t in testedwith.split()] if ct in tested: continue lower = [t for t in tested if t < ct] nearest = max(lower or tested) if worst[0] is None or nearest < worst[1]: worst = name, nearest, report if worst[0] is not None: name, testedwith, report = worst if not isinstance(testedwith, (bytes, str)): testedwith = '.'.join([str(c) for c in testedwith]) warning = (_('** Unknown exception encountered with ' 'possibly-broken third-party extension %s\n' '** which supports versions %s of Mercurial.\n' '** Please disable %s and try your action again.\n' '** If that fixes the bug please report it to %s\n') % (name, testedwith, name, report)) else: bugtracker = ui.config('ui', 'supportcontact') if bugtracker is None: bugtracker = _("https://mercurial-scm.org/wiki/BugTracker") warning = (_("** unknown exception encountered, " "please report by visiting\n** ") + bugtracker + '\n') if pycompat.ispy3: sysversion = sys.version.encode(u'utf-8') else: sysversion = sys.version sysversion = sysversion.replace('\n', '') warning += ((_("** Python %s\n") % sysversion) + (_("** Mercurial Distributed SCM (version %s)\n") % util.version()) + (_("** Extensions loaded: %s\n") % ", ".join([x[0] for x in extensions.extensions()]))) return warning def handlecommandexception(ui): """Produce a warning message for broken commands Called when handling an exception; the exception is reraised if this function returns False, ignored otherwise. """ warning = _exceptionwarning(ui) ui.log("commandexception", "%s\n%s\n", warning, traceback.format_exc()) ui.warn(warning) return False # re-raise the exception