# 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 i18n import _
import os, sys, atexit, signal, pdb, socket, errno, shlex, time, traceback, re
import util, commands, hg, fancyopts, extensions, hook, error
import cmdutil, encoding
import ui as uimod
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(sys.argv[1:])))
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 = sys.stderr
try:
if not req.ui:
req.ui = uimod.ui()
if '--traceback' in req.args:
req.ui.setconfig('ui', 'traceback', 'on')
# 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 util.Abort, inst:
ferr.write(_("abort: %s\n") % inst)
if inst.hint:
ferr.write(_("(%s)\n") % inst.hint)
return -1
except error.ParseError, inst:
if len(inst.args) > 1:
ferr.write(_("hg: parse error at %s: %s\n") %
(inst.args[1], inst.args[0]))
else:
ferr.write(_("hg: parse error: %s\n") % inst.args[0])
return -1
return _runcatch(req)
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
try:
try:
# 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"))
pdb.set_trace()
try:
return _dispatch(req)
finally:
ui.flush()
except:
# enter the debugger when we hit an exception
if '--debugger' in req.args:
traceback.print_exc()
pdb.post_mortem(sys.exc_info()[2])
ui.traceback()
raise
# Global exception handling, alphabetically
# Mercurial-specific first, followed by built-in and library exceptions
except error.AmbiguousCommand, inst:
ui.warn(_("hg: command '%s' is ambiguous:\n %s\n") %
(inst.args[0], " ".join(inst.args[1])))
except error.ParseError, inst:
if len(inst.args) > 1:
ui.warn(_("hg: parse error at %s: %s\n") %
(inst.args[1], inst.args[0]))
else:
ui.warn(_("hg: parse error: %s\n") % inst.args[0])
return -1
except error.LockHeld, inst:
if inst.errno == errno.ETIMEDOUT:
reason = _('timed out waiting for lock held by %s') % inst.locker
else:
reason = _('lock held by %s') % inst.locker
ui.warn(_("abort: %s: %s\n") % (inst.desc or inst.filename, reason))
except error.LockUnavailable, inst:
ui.warn(_("abort: could not lock %s: %s\n") %
(inst.desc or inst.filename, inst.strerror))
except error.CommandError, inst:
if inst.args[0]:
ui.warn(_("hg %s: %s\n") % (inst.args[0], inst.args[1]))
commands.help_(ui, inst.args[0], full=False, command=True)
else:
ui.warn(_("hg: %s\n") % inst.args[1])
commands.help_(ui, 'shortlist')
except error.RepoError, inst:
ui.warn(_("abort: %s!\n") % inst)
if inst.hint:
ui.warn(_("(%s)\n") % inst.hint)
except error.ResponseError, inst:
ui.warn(_("abort: %s") % inst.args[0])
if not isinstance(inst.args[1], basestring):
ui.warn(" %r\n" % (inst.args[1],))
elif not inst.args[1]:
ui.warn(_(" empty string\n"))
else:
ui.warn("\n%r\n" % util.ellipsis(inst.args[1]))
except error.RevlogError, inst:
ui.warn(_("abort: %s!\n") % inst)
except error.SignalInterrupt:
ui.warn(_("killed!\n"))
except error.UnknownCommand, inst:
ui.warn(_("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)
commands.help_(ui, inst.args[0], unknowncmd=True)
except error.UnknownCommand:
commands.help_(ui, 'shortlist')
except util.Abort, inst:
ui.warn(_("abort: %s\n") % inst)
if inst.hint:
ui.warn(_("(%s)\n") % inst.hint)
except ImportError, inst:
ui.warn(_("abort: %s!\n") % inst)
m = str(inst).split()[-1]
if m in "mpatch bdiff".split():
ui.warn(_("(did you forget to compile extensions?)\n"))
elif m in "zlib".split():
ui.warn(_("(is your Python install correct?)\n"))
except IOError, inst:
if hasattr(inst, "code"):
ui.warn(_("abort: %s\n") % inst)
elif hasattr(inst, "reason"):
try: # usually it is in the form (errno, strerror)
reason = inst.reason.args[1]
except (AttributeError, IndexError):
# it might be anything, for example a string
reason = inst.reason
ui.warn(_("abort: error: %s\n") % reason)
elif hasattr(inst, "args") and inst.args[0] == errno.EPIPE:
if ui.debugflag:
ui.warn(_("broken pipe\n"))
elif getattr(inst, "strerror", None):
if getattr(inst, "filename", None):
ui.warn(_("abort: %s: %s\n") % (inst.strerror, inst.filename))
else:
ui.warn(_("abort: %s\n") % inst.strerror)
else:
raise
except OSError, inst:
if getattr(inst, "filename", None):
ui.warn(_("abort: %s: %s\n") % (inst.strerror, inst.filename))
else:
ui.warn(_("abort: %s\n") % inst.strerror)
except KeyboardInterrupt:
try:
ui.warn(_("interrupted!\n"))
except IOError, inst:
if inst.errno == errno.EPIPE:
if ui.debugflag:
ui.warn(_("\nbroken pipe\n"))
else:
raise
except MemoryError:
ui.warn(_("abort: out of memory\n"))
except SystemExit, inst:
# Commands shouldn't sys.exit directly, but give a return code.
# Just in case catch this and and pass exit code to caller.
return inst.code
except socket.error, inst:
ui.warn(_("abort: %s\n") % inst.args[-1])
except:
ui.warn(_("** unknown exception encountered,"
" please report by visiting\n"))
ui.warn(_("** http://mercurial.selenic.com/wiki/BugTracker\n"))
ui.warn(_("** Python %s\n") % sys.version.replace('\n', ''))
ui.warn(_("** Mercurial Distributed SCM (version %s)\n")
% util.version())
ui.warn(_("** Extensions loaded: %s\n")
% ", ".join([x[0] for x in extensions.extensions()]))
raise
return -1
def aliasargs(fn, givenargs):
args = getattr(fn, 'args', [])
if args and givenargs:
cmd = ' '.join(map(util.shellquote, args))
nums = []
def replacer(m):
num = int(m.group(1)) - 1
nums.append(num)
return givenargs[num]
cmd = re.sub(r'\$(\d+|\$)', replacer, cmd)
givenargs = [x for i, x in enumerate(givenargs)
if i not in nums]
args = shlex.split(cmd)
return args + givenargs
class cmdalias(object):
def __init__(self, name, definition, cmdtable):
self.name = self.cmd = name
self.cmdname = ''
self.definition = definition
self.args = []
self.opts = []
self.help = ''
self.norepo = True
self.badalias = False
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:
def fn(ui, *args):
ui.warn(_("no definition for alias '%s'\n") % self.name)
return 1
self.fn = fn
self.badalias = True
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:])
replace = dict((str(i + 1), arg) for i, arg in enumerate(args))
replace['0'] = self.name
replace['@'] = ' '.join(args)
cmd = util.interpolate(r'\$', replace, cmd, escape_prefix=True)
return util.system(cmd, environ=env, out=ui.fout)
self.fn = fn
return
args = shlex.split(self.definition)
self.cmdname = cmd = args.pop(0)
args = map(util.expandpath, args)
for invalidarg in ("--cwd", "-R", "--repository", "--repo"):
if _earlygetopt([invalidarg], args):
def fn(ui, *args):
ui.warn(_("error in definition for alias '%s': %s may only "
"be given on the command line\n")
% (self.name, invalidarg))
return 1
self.fn = fn
self.badalias = True
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
self.args = aliasargs(self.fn, args)
if cmd not in commands.norepo.split(' '):
self.norepo = False
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:
def fn(ui, *args):
ui.warn(_("alias '%s' resolves to unknown command '%s'\n") \
% (self.name, cmd))
try:
# check if the command is in a disabled extension
commands.help_(ui, cmd, unknowncmd=True)
except error.UnknownCommand:
pass
return 1
self.fn = fn
self.badalias = True
except error.AmbiguousCommand:
def fn(ui, *args):
ui.warn(_("alias '%s' resolves to ambiguous command '%s'\n") \
% (self.name, cmd))
return 1
self.fn = fn
self.badalias = True
def __call__(self, ui, *args, **opts):
if self.shadows:
ui.debug("alias '%s' shadows command '%s'\n" %
(self.name, self.cmdname))
if hasattr(self, 'shell'):
return self.fn(ui, *args, **opts)
else:
try:
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'):
aliasdef = cmdalias(alias, definition, cmdtable)
cmdtable[aliasdef.cmd] = (aliasdef, aliasdef.opts, aliasdef.help)
if aliasdef.norepo:
commands.norepo += ' %s' % alias
def _parse(ui, args):
options = {}
cmdoptions = {}
try:
args = fancyopts.fancyopts(args, commands.globalopts, options)
except fancyopts.getopt.GetoptError, inst:
raise error.CommandError(None, inst)
if args:
cmd, args = args[0], args[1:]
aliases, entry = cmdutil.findcmd(cmd, commands.table,
ui.config("ui", "strict"))
cmd = aliases[0]
args = aliasargs(entry[0], args)
defaults = ui.config("defaults", cmd)
if defaults:
args = map(util.expandpath, shlex.split(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, True)
except fancyopts.getopt.GetoptError, 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 = cfg.split('=', 1)
section, name = name.split('.', 1)
if not section or not name:
raise IndexError
ui.setconfig(section, name, value)
configs.append((section, name, value))
except (IndexError, ValueError):
raise util.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.
"""
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:
if args[pos] in aliases:
if pos + 1 >= argcount:
# ignore and let getopt report an error if there is no value
break
del args[pos]
values.append(args.pop(pos))
argcount -= 2
elif args[pos][: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
ret = hook.hook(lui, repo, "pre-%s" % cmd, False, args=" ".join(fullargs),
pats=cmdpats, opts=cmdoptions)
if ret:
return ret
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)
return ret
def _getlocal(ui, rpath):
"""Return (path, local ui object) for the given target path.
Takes paths in [cwd]/.hg/hgrc into account."
"""
try:
wd = os.getcwd()
except OSError, e:
raise util.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):
norepo = commands.norepo
options = {}
try:
args = fancyopts.fancyopts(args, commands.globalopts, options)
except fancyopts.getopt.GetoptError:
return
if not args:
return
cmdtable = commands.table.copy()
addaliases(lui, cmdtable)
cmd = args[0]
try:
aliases, entry = cmdutil.findcmd(cmd, cmdtable, lui.config("ui", "strict"))
except (error.AmbiguousCommand, error.UnknownCommand):
commands.norepo = norepo
return
cmd = aliases[0]
fn = entry[0]
if cmd and hasattr(fn, 'shell'):
d = lambda: fn(ui, *args[1:])
return lambda: runcommand(lui, None, cmd, args[:1], ui, options, d, [], {})
commands.norepo = norepo
_loaded = set()
def _dispatch(req):
args = req.args
ui = req.ui
# read --config before doing anything else
# (e.g. to change trust settings for reading .hg/hgrc)
cfgs = _parseconfig(ui, _earlygetopt(['--config'], args))
# check for cwd
cwd = _earlygetopt(['--cwd'], args)
if cwd:
os.chdir(cwd[-1])
rpath = _earlygetopt(["-R", "--repository", "--repo"], args)
path, lui = _getlocal(ui, rpath)
# Now that we're operating in the right directory/repository with
# the right config settings, check for shell aliases
shellaliasfn = _checkshellalias(lui, ui, args)
if shellaliasfn:
return shellaliasfn()
# 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:
cmdtable = getattr(module, 'cmdtable', {})
overrides = [cmd for cmd in cmdtable if cmd in commands.table]
if overrides:
ui.warn(_("extension '%s' overrides commands: %s\n")
% (name, " ".join(overrides)))
commands.table.update(cmdtable)
_loaded.add(name)
# (reposetup is handled in hg.repository)
addaliases(lui, commands.table)
# 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 util.Abort(_("option --config may not be abbreviated!"))
if options["cwd"]:
raise util.Abort(_("option --cwd may not be abbreviated!"))
if options["repository"]:
raise util.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)
uis = set([ui, lui])
if req.repo:
uis.add(req.repo.ui)
# copy configs that were passed on the cmdline (--config) to the repo ui
for cfg in cfgs:
req.repo.ui.setconfig(*cfg)
for opt in ('verbose', 'debug', 'quiet', 'traceback'):
val = bool(options[opt])
if val:
for ui_ in uis:
ui_.setconfig('ui', opt, str(val))
if options['noninteractive']:
for ui_ in uis:
ui_.setconfig('ui', 'interactive', 'off')
if cmdoptions.get('insecure', False):
for ui_ in uis:
ui_.setconfig('web', 'cacerts', '')
if options['help']:
return commands.help_(ui, cmd, options['version'])
elif options['version']:
return commands.version_(ui)
elif not cmd:
return commands.help_(ui, 'shortlist')
repo = None
cmdpats = args[:]
if cmd not in commands.norepo.split():
# 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 util.Abort(_("repository '%s' is not local") % path)
repo.ui.setconfig("bundle", "mainreporoot", repo.root)
except error.RequirementError:
raise
except error.RepoError:
if cmd not in commands.optionalrepo.split():
if 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 %r"
" (.hg not found)") % os.getcwd())
raise
if repo:
ui = repo.ui
args.insert(0, repo)
elif rpath:
ui.warn(_("warning: --repository ignored\n"))
msg = ' '.join(' ' in a and repr(a) or a for a in fullargs)
ui.log("command", msg + "\n")
d = lambda: util.checksignature(func)(ui, *args, **cmdoptions)
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):
def checkargs():
try:
return cmdfunc()
except error.SignatureError:
raise error.CommandError(cmd, _("invalid arguments"))
if options['profile']:
format = ui.config('profiling', 'format', default='text')
if not format in ['text', 'kcachegrind']:
ui.warn(_("unrecognized profiling format '%s'"
" - Ignored\n") % format)
format = 'text'
output = ui.config('profiling', 'output')
if output:
path = ui.expandpath(output)
ostream = open(path, 'wb')
else:
ostream = sys.stderr
try:
from mercurial import lsprof
except ImportError:
raise util.Abort(_(
'lsprof not available - install from '
'http://codespeak.net/svn/user/arigo/hack/misc/lsprof/'))
p = lsprof.Profiler()
p.enable(subcalls=True)
try:
return checkargs()
finally:
p.disable()
if format == 'kcachegrind':
import lsprofcalltree
calltree = lsprofcalltree.KCacheGrind(p)
calltree.output(ostream)
else:
# format == 'text'
stats = lsprof.Stats(p.getstats())
stats.sort()
stats.pprint(top=10, file=ostream, climit=5)
if output:
ostream.close()
else:
return checkargs()