# 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 atexit
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,
debugcommands,
demandimport,
encoding,
error,
extensions,
fancyopts,
fileset,
help,
hg,
hook,
profiling,
pycompat,
revset,
scmutil,
templatefilters,
templatekw,
templater,
ui as uimod,
util,
)
class request(object):
def __init__(self, args, ui=None, repo=None, fin=None, fout=None,
ferr=None):
self.args = args
self.ui = ui
self.repo = repo
# input/output/error streams
self.fin = fin
self.fout = fout
self.ferr = ferr
def run():
"run the command in sys.argv"
sys.exit((dispatch(request(pycompat.sysargv[1:])) or 0) & 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 KeyboardInterrupt:
try:
req.ui.warn(_("interrupted!\n"))
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 %s after %0.2f seconds\n",
msg, ret or 0, duration)
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():
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])
ui.traceback()
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')
ui.warn(_("hg %s: %s\n") % (inst.args[0], inst.args[1]))
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, 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 = {'norepo': True, 'optionalrepo': False, '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,
[], {})
_loaded = set()
# list of (objname, loadermod, loadername) tuple:
# - objname is the name of an object in extension module, from which
# extra information is loaded
# - loadermod is the module where loader is placed
# - loadername is the name of the function, which takes (ui, extensionname,
# extraobj) arguments
extraloaders = [
('cmdtable', commands, 'loadcmdtable'),
('colortable', color, 'loadcolortable'),
('filesetpredicate', fileset, 'loadpredicate'),
('revsetpredicate', revset, 'loadpredicate'),
('templatefilter', templatefilters, 'loadfilter'),
('templatefunc', templater, 'loadfunction'),
('templatekeyword', templatekw, 'loadkeyword'),
]
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)
# Side-effect of accessing is debugcommands module is guaranteed to be
# imported and commands.table is populated.
debugcommands.command
uis = set([ui, lui])
if req.repo:
uis.add(req.repo.ui)
if '--profile' in args:
for ui_ in uis:
ui_.setconfig('profiling', 'enabled', 'true', '--profile')
with profiling.maybeprofile(lui):
# Configure extensions in phases: uisetup, extsetup, cmdtable, and
# reposetup. Programs like TortoiseHg will call _dispatch several
# times so we keep track of configured extensions in _loaded.
extensions.loadall(lui)
exts = [ext for ext in extensions.extensions() if ext[0] not in _loaded]
# Propagate any changes to lui.__class__ by extensions
ui.__class__ = lui.__class__
# (uisetup and extsetup are handled in extensions.loadall)
for name, module in exts:
for objname, loadermod, loadername in extraloaders:
extraobj = getattr(module, objname, None)
if extraobj is not None:
getattr(loadermod, loadername)(ui, name, extraobj)
_loaded.add(name)
# (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]))
atexit.register(print_time)
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 util.parsebool(options['pager']):
ui.pager('internal-always-' + cmd)
elif options['pager'] != 'auto':
ui.disablepager()
if cmdoptions.get('insecure', False):
for ui_ in uis:
ui_.insecureconnections = True
# setup color handling
coloropt = options['color']
for ui_ in uis:
if coloropt:
ui_.setconfig('ui', 'color', coloropt, '--color')
color.setup(ui_)
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)
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', None) 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', None)
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