Mercurial > hg
view mercurial/dispatch.py @ 29375:fcaf20175b1b
demandimport: delay loading for "from a import b" with absolute_import
Before this patch, "from a import b" doesn't delay loading module "b",
if absolute_import is enabled, even though "from . import b" does.
For example:
- it is assumed that extension X has "from P import M" for module M
under package P with absolute_import feature
- if importing module M is already delayed before loading extension
X, loading module M in extension X is delayed until actually
referring
util, cmdutil, scmutil or so of Mercurial itself should be
imported by "from . import M" style before loading extension X
- otherwise, module M is loaded immediately at loading extension X,
even if extension X itself isn't used at that "hg" command invocation
Some minor modules (e.g. filemerge or so) of Mercurial itself
aren't imported by "from . import M" style before loading
extension X. And of course, external libraries aren't, too.
This might cause startup performance problem of hg command, because
many bundled extensions already enable absolute_import feature.
To delay loading module for "from a import b" with absolute_import
feature, this patch does below in "from a (or .a) import b" with
absolute_import case:
1. import root module of "name" by system built-in __import__
(referred as _origimport)
2. recurse down the module chain for hierarchical "name"
This logic can be shared with non absolute_import
case. Therefore, this patch also centralizes it into chainmodules().
3. and fall through to process elements in "fromlist" for the leaf
module of "name"
Processing elements in "fromlist" is executed in the code path
after "if _pypy: .... else: ..." clause. Therefore, this patch
replaces "if _pypy:" with "elif _pypy:" to share it.
At 4f1144c3c72b introducing original "work around" for "from a import
b" case, elements in "fromlist" were imported with "level=level". But
"level" might be grater than 1 (e.g. level=2 in "from .. import b"
case) at demandimport() invocation, and importing direct sub-module in
"fromlist" with level grater than 1 causes unexpected result.
IMHO, this seems main reason of "errors for unknown reason" described
in 4f1144c3c72b, and we don't have to worry about it, because this
issue was already fixed by 78d05778907b.
This is reason why this patch removes "errors for unknown reasons"
comment.
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
---|---|
date | Sun, 19 Jun 2016 02:17:33 +0900 |
parents | 12769703d4ba |
children | 39149b6036e6 |
line wrap: on
line source
# 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 os import pdb import re import shlex import signal import socket import sys import time import traceback from .i18n import _ from . import ( cmdutil, commands, demandimport, encoding, error, extensions, fancyopts, fileset, hg, hook, revset, 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(sys.argv[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 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', '--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 = ' '.join(' ' in a and repr(a) or a for a in req.args) starttime = time.time() 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 = time.time() - starttime req.ui.flush() 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 try: 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 # Global exception handling, alphabetically # Mercurial-specific first, followed by built-in and library exceptions except error.AmbiguousCommand as inst: ui.warn(_("hg: command '%s' is ambiguous:\n %s\n") % (inst.args[0], " ".join(inst.args[1]))) except error.ParseError as inst: _formatparse(ui.warn, inst) return -1 except error.LockHeld as 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 as inst: ui.warn(_("abort: could not lock %s: %s\n") % (inst.desc or inst.filename, inst.strerror)) except error.CommandError as 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.OutOfBandError as inst: if inst.args: msg = _("abort: remote error:\n") else: msg = _("abort: remote error\n") ui.warn(msg) if inst.args: ui.warn(''.join(inst.args)) if inst.hint: ui.warn('(%s)\n' % inst.hint) except error.RepoError as inst: ui.warn(_("abort: %s!\n") % inst) if inst.hint: ui.warn(_("(%s)\n") % inst.hint) except error.ResponseError as 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.CensoredNodeError as inst: ui.warn(_("abort: file censored %s!\n") % inst) except error.RevlogError as inst: ui.warn(_("abort: %s!\n") % inst) except error.SignalInterrupt: ui.warn(_("killed!\n")) except error.UnknownCommand as 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, error.Abort): suggested = False if len(inst.args) == 2: sim = _getsimilar(inst.args[1], inst.args[0]) if sim: _reportsimilar(ui.warn, sim) suggested = True if not suggested: commands.help_(ui, 'shortlist') except error.InterventionRequired as inst: ui.warn("%s\n" % inst) if inst.hint: ui.warn(_("(%s)\n") % inst.hint) return 1 except error.Abort as inst: ui.warn(_("abort: %s\n") % inst) if inst.hint: ui.warn(_("(%s)\n") % inst.hint) except ImportError as 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 as inst: if util.safehasattr(inst, "code"): ui.warn(_("abort: %s\n") % inst) elif util.safehasattr(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 if isinstance(reason, unicode): # SSLError of Python 2.7.9 contains a unicode reason = reason.encode(encoding.encoding, 'replace') ui.warn(_("abort: error: %s\n") % reason) elif (util.safehasattr(inst, "args") and inst.args and inst.args[0] == errno.EPIPE): pass 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 as inst: if getattr(inst, "filename", None) is not None: ui.warn(_("abort: %s: '%s'\n") % (inst.strerror, inst.filename)) else: ui.warn(_("abort: %s\n") % inst.strerror) except KeyboardInterrupt: raise except MemoryError: ui.warn(_("abort: out of memory\n")) except SystemExit as 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 as inst: ui.warn(_("abort: %s\n") % inst.args[-1]) except: # perhaps 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(r'\$(\d+|\$)', replacer, cmd) givenargs = [x for i, x in enumerate(givenargs) if i not in nums] args = shlex.split(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) self.fn = fn return try: args = shlex.split(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 = map(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)) 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 fancyopts.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 = 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 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 = os.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 fancyopts.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 _cmdattr(ui, cmd, func, attr): try: return getattr(func, attr) except AttributeError: ui.deprecwarn("missing attribute '%s', use @command decorator " "to register '%s'" % (attr, cmd), '3.8') return False _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'), ('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) # 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) uis = set([ui, lui]) if req.repo: uis.add(req.repo.ui) if options['verbose'] or options['debug'] or options['quiet']: for opt in ('verbose', 'debug', 'quiet'): val = str(bool(options[opt])) 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 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 _cmdattr(ui, cmd, 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 _cmdattr(ui, cmd, func, 'optionalrepo'): if (_cmdattr(ui, cmd, 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)") % os.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 = ' '.join(' ' in a and repr(a) or a for a in fullargs) ui.log("command", '%s\n', msg) 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 lsprofile(ui, func, fp): format = ui.config('profiling', 'format', default='text') field = ui.config('profiling', 'sort', default='inlinetime') limit = ui.configint('profiling', 'limit', default=30) climit = ui.configint('profiling', 'nested', default=0) if format not in ['text', 'kcachegrind']: ui.warn(_("unrecognized profiling format '%s'" " - Ignored\n") % format) format = 'text' try: from . import lsprof except ImportError: raise error.Abort(_( 'lsprof not available - install from ' 'http://codespeak.net/svn/user/arigo/hack/misc/lsprof/')) p = lsprof.Profiler() p.enable(subcalls=True) try: return func() finally: p.disable() if format == 'kcachegrind': from . import lsprofcalltree calltree = lsprofcalltree.KCacheGrind(p) calltree.output(fp) else: # format == 'text' stats = lsprof.Stats(p.getstats()) stats.sort(field) stats.pprint(limit=limit, file=fp, climit=climit) def flameprofile(ui, func, fp): try: from flamegraph import flamegraph except ImportError: raise error.Abort(_( 'flamegraph not available - install from ' 'https://github.com/evanhempel/python-flamegraph')) # developer config: profiling.freq freq = ui.configint('profiling', 'freq', default=1000) filter_ = None collapse_recursion = True thread = flamegraph.ProfileThread(fp, 1.0 / freq, filter_, collapse_recursion) start_time = time.clock() try: thread.start() func() finally: thread.stop() thread.join() print('Collected %d stack frames (%d unique) in %2.2f seconds.' % ( time.clock() - start_time, thread.num_frames(), thread.num_frames(unique=True))) def statprofile(ui, func, fp): try: import statprof except ImportError: raise error.Abort(_( 'statprof not available - install using "easy_install statprof"')) freq = ui.configint('profiling', 'freq', default=1000) if freq > 0: statprof.reset(freq) else: ui.warn(_("invalid sampling frequency '%s' - ignoring\n") % freq) statprof.start() try: return func() finally: statprof.stop() statprof.display(fp) def _runcommand(ui, options, cmd, cmdfunc): """Enables the profiler if applicable. ``profiling.enabled`` - boolean config that enables or disables profiling """ def checkargs(): try: return cmdfunc() except error.SignatureError: raise error.CommandError(cmd, _("invalid arguments")) if options['profile'] or ui.configbool('profiling', 'enabled'): profiler = os.getenv('HGPROF') if profiler is None: profiler = ui.config('profiling', 'type', default='ls') if profiler not in ('ls', 'stat', 'flame'): ui.warn(_("unrecognized profiler '%s' - ignored\n") % profiler) profiler = 'ls' output = ui.config('profiling', 'output') if output == 'blackbox': fp = util.stringio() elif output: path = ui.expandpath(output) fp = open(path, 'wb') else: fp = sys.stderr try: if profiler == 'ls': return lsprofile(ui, checkargs, fp) elif profiler == 'flame': return flameprofile(ui, checkargs, fp) else: return statprofile(ui, checkargs, fp) finally: if output: if output == 'blackbox': val = "Profile:\n%s" % fp.getvalue() # ui.log treats the input as a format string, # so we need to escape any % signs. val = val.replace('%', '%%') ui.log('profile', val) fp.close() else: return checkargs() 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', '') 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 testedwith == 'internal': 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, 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') warning += ((_("** Python %s\n") % sys.version.replace('\n', '')) + (_("** 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