# dispatch.py - command dispatching for mercurial
#
# Copyright 2005-2007 Olivia Mackall <olivia@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.
import errno
import getopt
import io
import os
import pdb
import re
import signal
import sys
import traceback
from .i18n import _
from hgdemandimport import tracing
from . import (
cmdutil,
color,
commands,
demandimport,
encoding,
error,
extensions,
fancyopts,
help,
hg,
hook,
localrepo,
profiling,
pycompat,
rcutil,
registrar,
requirements as requirementsmod,
scmutil,
ui as uimod,
util,
vfs,
)
from .utils import (
procutil,
stringutil,
urlutil,
)
class request:
def __init__(
self,
args,
ui=None,
repo=None,
fin=None,
fout=None,
ferr=None,
fmsg=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
# separate stream for status/error messages
self.fmsg = fmsg
# remember options pre-parsed by _earlyparseopts()
self.earlyoptions = {}
# reposetups which run before extensions, useful for chg to pre-fill
# low-level repo state (for example, changelog) before extensions.
self.prereposetups = prereposetups or []
# store the parsed and canonical command
self.canonical_command = None
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.warnnoi18n(b'error in exit handlers:\n')
self.ui.traceback(force=True)
finally:
if exc is not None:
raise exc
def _flushstdio(ui, err):
status = None
# In all cases we try to flush stdio streams.
if hasattr(ui, 'fout'):
assert ui is not None # help pytype
assert ui.fout is not None # help pytype
try:
ui.fout.flush()
except IOError as e:
err = e
status = -1
if hasattr(ui, 'ferr'):
assert ui is not None # help pytype
assert ui.ferr is not None # help pytype
try:
if err is not None and err.errno != errno.EPIPE:
ui.ferr.write(
b'abort: %s\n' % encoding.strtolocal(err.strerror)
)
ui.ferr.flush()
# There's not much we can do about an I/O error here. So (possibly)
# change the status code and move on.
except IOError:
status = -1
return status
def run():
"""run the command in sys.argv"""
try:
initstdio()
with tracing.log('parse args into request'):
req = request(pycompat.sysargv[1:])
status = dispatch(req)
_silencestdio()
except KeyboardInterrupt:
# Catch early/late KeyboardInterrupt as last ditch. Here nothing will
# be printed to console to avoid another IOError/KeyboardInterrupt.
status = -1
sys.exit(status & 255)
def initstdio():
# stdio streams on Python 3 are io.TextIOWrapper instances proxying another
# buffer. These streams will normalize \n to \r\n by default. Mercurial's
# preferred mechanism for writing output (ui.write()) uses io.BufferedWriter
# instances, which write to the underlying stdio file descriptor in binary
# mode. ui.write() uses \n for line endings and no line ending normalization
# is attempted through this interface. This "just works," even if the system
# preferred line ending is not \n.
#
# But some parts of Mercurial (e.g. hooks) can still send data to sys.stdout
# and sys.stderr. They will inherit the line ending normalization settings,
# potentially causing e.g. \r\n to be emitted. Since emitting \n should
# "just work," here we change the sys.* streams to disable line ending
# normalization, ensuring compatibility with our ui type.
if sys.stdout is not None:
# write_through is new in Python 3.7.
kwargs = {
"newline": "\n",
"line_buffering": sys.stdout.line_buffering,
}
if hasattr(sys.stdout, "write_through"):
# pytype: disable=attribute-error
kwargs["write_through"] = sys.stdout.write_through
# pytype: enable=attribute-error
sys.stdout = io.TextIOWrapper(
sys.stdout.buffer, sys.stdout.encoding, sys.stdout.errors, **kwargs
)
if sys.stderr is not None:
kwargs = {
"newline": "\n",
"line_buffering": sys.stderr.line_buffering,
}
if hasattr(sys.stderr, "write_through"):
# pytype: disable=attribute-error
kwargs["write_through"] = sys.stderr.write_through
# pytype: enable=attribute-error
sys.stderr = io.TextIOWrapper(
sys.stderr.buffer, sys.stderr.encoding, sys.stderr.errors, **kwargs
)
if sys.stdin is not None:
# No write_through on read-only stream.
sys.stdin = io.TextIOWrapper(
sys.stdin.buffer,
sys.stdin.encoding,
sys.stdin.errors,
# None is universal newlines mode.
newline=None,
line_buffering=sys.stdin.line_buffering,
)
def _silencestdio():
for fp in (sys.stdout, sys.stderr):
if fp is None:
continue
# Check if the file is okay
try:
fp.flush()
continue
except IOError:
pass
# Otherwise mark it as closed to silence "Exception ignored in"
# message emitted by the interpreter finalizer.
try:
fp.close()
except IOError:
pass
def _formatargs(args):
return b' '.join(procutil.shellquote(a) for a in args)
def dispatch(req):
"""run the command specified in req.args; returns an integer status code"""
err = None
try:
status = _rundispatch(req)
except error.StdioError as e:
err = e
status = -1
ret = _flushstdio(req.ui, err)
if ret and not status:
status = ret
return status
def _rundispatch(req):
with tracing.log('dispatch._rundispatch'):
if req.ferr:
ferr = req.ferr
elif req.ui:
ferr = req.ui.ferr
else:
ferr = procutil.stderr
try:
if not req.ui:
req.ui = uimod.ui.load()
req.earlyoptions.update(_earlyparseopts(req.ui, req.args))
if req.earlyoptions[b'traceback']:
req.ui.setconfig(b'ui', b'traceback', b'on', b'--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
if req.fmsg:
req.ui.fmsg = req.fmsg
except error.Abort as inst:
ferr.write(inst.format())
return -1
formattedargs = _formatargs(req.args)
starttime = util.timer()
ret = 1 # default of Python exit code on unhandled exception
try:
ret = _runcatch(req) or 0
except error.ProgrammingError as inst:
req.ui.error(_(b'** ProgrammingError: %s\n') % inst)
if inst.hint:
req.ui.error(_(b'** (%s)\n') % inst.hint)
raise
except KeyboardInterrupt as inst:
try:
if isinstance(inst, error.SignalInterrupt):
msg = _(b"killed!\n")
else:
msg = _(b"interrupted!\n")
req.ui.error(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 BrokenPipeError:
pass
ret = -1
finally:
duration = util.timer() - starttime
req.ui.flush() # record blocked times
if req.ui.logblockedtimes:
req.ui._blockedtimes[b'command_duration'] = duration * 1000
req.ui.log(
b'uiblocked',
b'ui blocked ms\n',
**pycompat.strkwargs(req.ui._blockedtimes)
)
return_code = ret & 255
req.ui.log(
b"commandfinish",
b"%s exited %d after %0.2f seconds\n",
formattedargs,
return_code,
duration,
return_code=return_code,
duration=duration,
canonical_command=req.canonical_command,
)
try:
req._runexithandlers()
except: # exiting, so no re-raises
ret = ret or -1
# do flush again since ui.log() and exit handlers may write to ui
req.ui.flush()
return ret
def _runcatch(req):
with tracing.log('dispatch._runcatch'):
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 == b'serve' and b'--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.
nbargs = 4
hashiddenaccess = b'--hidden' in cmdargs
if hashiddenaccess:
nbargs += 1
if (
len(req.args) != nbargs
or req.args[0] != b'-R'
or req.args[1].startswith(b'--')
or req.args[2] != b'serve'
or req.args[3] != b'--stdio'
or hashiddenaccess
and req.args[4] != b'--hidden'
):
raise error.Abort(
_(b'potentially unsafe serve --stdio invocation: %s')
% (stringutil.pprint(req.args),)
)
try:
debugger = b'pdb'
debugtrace = {b'pdb': pdb.set_trace}
debugmortem = {b'pdb': pdb.post_mortem}
# read --config before doing anything else
# (e.g. to change trust settings for reading .hg/hgrc)
cfgs = _parseconfig(req.ui, req.earlyoptions[b'config'])
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=b'--config'
)
# developer config: ui.debugger
debugger = ui.config(b"ui", b"debugger")
debugmod = pdb
if not debugger or ui.plain():
# if we are in HGPLAIN mode, then disable custom debugging
debugger = b'pdb'
elif req.earlyoptions[b'debugger']:
# 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__(pycompat.sysstr(debugger))
except ImportError:
pass # Leave debugmod = pdb
debugtrace[debugger] = debugmod.set_trace
debugmortem[debugger] = debugmod.post_mortem
# enter the debugger before command execution
if req.earlyoptions[b'debugger']:
ui.warn(
_(
b"entering debugger - "
b"type c to continue starting hg or h for help\n"
)
)
if (
debugger != b'pdb'
and debugtrace[debugger] == debugtrace[b'pdb']
):
ui.warn(
_(
b"%s debugger specified "
b"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 req.earlyoptions[b'debugger']:
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.
"""
detailed_exit_code = -1
try:
return scmutil.callcatch(ui, func)
except error.AmbiguousCommand as inst:
detailed_exit_code = 10
ui.warn(
_(b"hg: command '%s' is ambiguous:\n %s\n")
% (inst.prefix, b" ".join(inst.matches))
)
except error.CommandError as inst:
detailed_exit_code = 10
if inst.command:
ui.pager(b'help')
msgbytes = pycompat.bytestr(inst.message)
ui.warn(_(b"hg %s: %s\n") % (inst.command, msgbytes))
commands.help_(ui, inst.command, full=False, command=True)
else:
ui.warn(_(b"hg: %s\n") % inst.message)
ui.warn(_(b"(use 'hg help -v' for a list of global options)\n"))
except error.UnknownCommand as inst:
detailed_exit_code = 10
nocmdmsg = _(b"hg: unknown command '%s'\n") % inst.command
try:
# check if the command is in a disabled extension
# (but don't check for extensions themselves)
formatted = help.formattedhelp(
ui, commands, inst.command, unknowncmd=True
)
ui.warn(nocmdmsg)
ui.write(formatted)
except (error.UnknownCommand, error.Abort):
suggested = False
if inst.all_commands:
sim = error.getsimilar(inst.all_commands, inst.command)
if sim:
ui.warn(nocmdmsg)
ui.warn(b"(%s)\n" % error.similarity_hint(sim))
suggested = True
if not suggested:
ui.warn(nocmdmsg)
ui.warn(_(b"(use 'hg help' for a list of commands)\n"))
except IOError:
raise
except KeyboardInterrupt:
raise
except: # probably re-raises
if not handlecommandexception(ui):
raise
if ui.configbool(b'ui', b'detailed-exit-code'):
return detailed_exit_code
else:
return -1
def aliasargs(fn, givenargs):
args = []
# only care about alias 'args', ignore 'args' set by extensions.wrapfunction
if not hasattr(fn, '_origfunc'):
args = getattr(fn, 'args', args)
if args:
cmd = b' '.join(map(procutil.shellquote, args))
nums = []
def replacer(m):
num = int(m.group(1)) - 1
nums.append(num)
if num < len(givenargs):
return givenargs[num]
raise error.InputError(_(b'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 "$@" (with quotes) because it's only
# built to match prefix + patterns.
replacemap = {b'$%d' % (i + 1): arg for i, arg in enumerate(args)}
replacemap[b'$0'] = name
replacemap[b'$$'] = b'$'
replacemap[b'$@'] = b' '.join(args)
# Typical Unix shells interpolate "$@" (with quotes) as all the positional
# parameters, separated out into words. Emulate the same behavior here by
# quoting the arguments individually. POSIX shells will then typically
# tokenize each argument into exactly one word.
replacemap[b'"$@"'] = b' '.join(procutil.shellquote(arg) for arg in args)
# escape '\$' for regex
regex = b'|'.join(replacemap.keys()).replace(b'$', br'\$')
r = re.compile(regex)
return r.sub(lambda x: replacemap[x.group()], cmd)
class cmdalias:
def __init__(self, ui, name, definition, cmdtable, source):
self.name = self.cmd = name
self.cmdname = b''
self.definition = definition
self.fn = None
self.givenargs = []
self.opts = []
self.help = b''
self.badalias = None
self.unknowncmd = False
self.source = source
try:
aliases, entry = cmdutil.findcmd(self.name, cmdtable)
for alias, e in cmdtable.items():
if e is entry:
self.cmd = alias
break
self.shadows = True
except error.UnknownCommand:
self.shadows = False
if not self.definition:
self.badalias = _(b"no definition for alias '%s'") % self.name
return
if self.definition.startswith(b'!'):
shdef = self.definition[1:]
self.shell = True
def fn(ui, *args):
env = {b'HG_ARGS': b' '.join((self.name,) + args)}
def _checkvar(m):
if m.groups()[0] == b'$':
return m.group()
elif int(m.groups()[0]) <= len(args):
return m.group()
else:
ui.debug(
b"No argument found for substitution "
b"of %i variable in alias '%s' definition.\n"
% (int(m.groups()[0]), self.name)
)
return b''
cmd = re.sub(br'\$(\d+|\$)', _checkvar, shdef)
cmd = aliasinterpolate(self.name, args, cmd)
return ui.system(
cmd, environ=env, blockedtag=b'alias_%s' % self.name
)
self.fn = fn
self.alias = True
self._populatehelp(ui, name, shdef, self.fn)
return
try:
args = pycompat.shlexsplit(self.definition)
except ValueError as inst:
self.badalias = _(b"error in definition for alias '%s': %s") % (
self.name,
stringutil.forcebytestr(inst),
)
return
earlyopts, args = _earlysplitopts(args)
if earlyopts:
self.badalias = _(
b"error in definition for alias '%s': %s may "
b"only be given on the command line"
) % (self.name, b'/'.join(pycompat.ziplist(*earlyopts)[0]))
return
self.cmdname = cmd = args.pop(0)
self.givenargs = args
try:
tableentry = cmdutil.findcmd(cmd, cmdtable, False)[1]
if len(tableentry) > 2:
self.fn, self.opts, cmdhelp = tableentry
else:
self.fn, self.opts = tableentry
cmdhelp = None
self.alias = True
self._populatehelp(ui, name, cmd, self.fn, cmdhelp)
except error.UnknownCommand:
self.badalias = _(
b"alias '%s' resolves to unknown command '%s'"
) % (
self.name,
cmd,
)
self.unknowncmd = True
except error.AmbiguousCommand:
self.badalias = _(
b"alias '%s' resolves to ambiguous command '%s'"
) % (
self.name,
cmd,
)
def _populatehelp(self, ui, name, cmd, fn, defaulthelp=None):
# confine strings to be passed to i18n.gettext()
cfg = {}
for k in (b'doc', b'help', b'category'):
v = ui.config(b'alias', b'%s:%s' % (name, k), None)
if v is None:
continue
if not encoding.isasciistr(v):
self.badalias = _(
b"non-ASCII character in alias definition '%s:%s'"
) % (name, k)
return
cfg[k] = v
self.help = cfg.get(b'help', defaulthelp or b'')
if self.help and self.help.startswith(b"hg " + cmd):
# drop prefix in old-style help lines so hg shows the alias
self.help = self.help[4 + len(cmd) :]
self.owndoc = b'doc' in cfg
doc = cfg.get(b'doc', pycompat.getdoc(fn))
if doc is not None:
doc = pycompat.sysstr(doc)
self.__doc__ = doc
self.helpcategory = cfg.get(
b'category', registrar.command.CATEGORY_NONE
)
@property
def args(self):
args = pycompat.maplist(util.expandpath, self.givenargs)
return aliasargs(self.fn, args)
def __getattr__(self, name):
adefaults = {
'norepo': True,
'intents': set(),
'optionalrepo': False,
'inferrepo': False,
}
if name not in adefaults:
raise AttributeError(name)
if self.badalias or hasattr(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 = _(b"'%s' is provided by '%s' extension") % (cmd, ext)
except error.UnknownCommand:
pass
raise error.ConfigError(self.badalias, hint=hint)
if self.shadows:
ui.debug(
b"alias '%s' shadows command '%s'\n" % (self.name, self.cmdname)
)
ui.log(
b'commandalias',
b"alias '%s' expands to '%s'\n",
self.name,
self.definition,
)
if hasattr(self, 'shell'):
return self.fn(ui, *args, **opts)
else:
try:
return util.checksignature(self.fn)(ui, *args, **opts)
except error.SignatureError:
args = b' '.join([self.cmdname] + self.args)
ui.debug(b"alias '%s' expands to '%s'\n" % (self.name, args))
raise
class lazyaliasentry:
"""like a typical command entry (func, opts, help), but is lazy"""
def __init__(self, ui, name, definition, cmdtable, source):
self.ui = ui
self.name = name
self.definition = definition
self.cmdtable = cmdtable.copy()
self.source = source
self.alias = True
@util.propertycache
def _aliasdef(self):
return cmdalias(
self.ui, self.name, self.definition, self.cmdtable, self.source
)
def __getitem__(self, n):
aliasdef = self._aliasdef
if n == 0:
return aliasdef
elif n == 1:
return aliasdef.opts
elif n == 2:
return aliasdef.help
else:
raise IndexError
def __iter__(self):
for i in range(3):
yield self[i]
def __len__(self):
return 3
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(b'alias', ignoresub=True):
try:
if cmdtable[alias].definition == definition:
continue
except (KeyError, AttributeError):
# definition might not exist or it might not be a cmdalias
pass
source = ui.configsource(b'alias', alias)
entry = lazyaliasentry(ui, alias, definition, cmdtable, source)
cmdtable[alias] = entry
def _parse(ui, args):
options = {}
cmdoptions = {}
try:
args = fancyopts.fancyopts(args, commands.globalopts, options)
except getopt.GetoptError as inst:
raise error.CommandError(None, stringutil.forcebytestr(inst))
if args:
cmd, args = args[0], args[1:]
aliases, entry = cmdutil.findcmd(
cmd, commands.table, ui.configbool(b"ui", b"strict")
)
cmd = aliases[0]
args = aliasargs(entry[0], args)
defaults = ui.config(b"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, stringutil.forcebytestr(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(b'=', 1)]
section, name = name.split(b'.', 1)
if not section or not name:
raise IndexError
ui.setconfig(section, name, value, b'--config')
configs.append((section, name, value))
except (IndexError, ValueError):
raise error.InputError(
_(
b'malformed --config option: %r '
b'(use --config section.name=value)'
)
% pycompat.bytestr(cfg)
)
return configs
def _earlyparseopts(ui, args):
options = {}
fancyopts.fancyopts(
args,
commands.globalopts,
options,
gnu=not ui.plain(b'strictflags'),
early=True,
optaliases={b'repository': [b'repo']},
)
return options
def _earlysplitopts(args):
"""Split args into a list of possible early options and remainder args"""
shortoptions = b'R:'
# TODO: perhaps 'debugger' should be included
longoptions = [b'cwd=', b'repository=', b'repo=', b'config=']
return fancyopts.earlygetopt(
args, shortoptions, longoptions, gnu=True, keepsep=True
)
def runcommand(lui, repo, cmd, fullargs, ui, options, d, cmdpats, cmdoptions):
# run pre-hook, and abort if it fails
hook.hook(
lui,
repo,
b"pre-%s" % cmd,
True,
args=b" ".join(fullargs),
pats=cmdpats,
opts=cmdoptions,
)
try:
ret = _runcommand(ui, options, cmd, d)
# run post-hook, passing command result
hook.hook(
lui,
repo,
b"post-%s" % cmd,
False,
args=b" ".join(fullargs),
result=ret,
pats=cmdpats,
opts=cmdoptions,
)
except Exception:
# run failure hook and re-raise
hook.hook(
lui,
repo,
b"fail-%s" % cmd,
False,
args=b" ".join(fullargs),
pats=cmdpats,
opts=cmdoptions,
)
raise
return ret
def _readsharedsourceconfig(ui, path):
"""if the current repository is shared one, this tries to read
.hg/hgrc of shared source if we are in share-safe mode
Config read is loaded into the ui object passed
This should be called before reading .hg/hgrc or the main repo
as that overrides config set in shared source"""
try:
with open(os.path.join(path, b".hg", b"requires"), "rb") as fp:
requirements = set(fp.read().splitlines())
if not (
requirementsmod.SHARESAFE_REQUIREMENT in requirements
and requirementsmod.SHARED_REQUIREMENT in requirements
):
return
hgvfs = vfs.vfs(os.path.join(path, b".hg"))
sharedvfs = localrepo._getsharedvfs(hgvfs, requirements)
root = sharedvfs.base
ui.readconfig(sharedvfs.join(b"hgrc"), root)
except IOError:
pass
def _getlocal(ui, rpath, wd=None):
"""Return (path, local ui object) for the given target path.
Takes paths in [cwd]/.hg/hgrc into account."
"""
try:
cwd = encoding.getcwd()
except OSError as e:
raise error.Abort(
_(b"error getting current working directory: %s")
% encoding.strtolocal(e.strerror)
)
# If using an alternate wd, temporarily switch to it so that relative
# paths are resolved correctly during config loading.
oldcwd = None
if wd is None:
wd = cwd
else:
oldcwd = cwd
os.chdir(wd)
path = cmdutil.findrepo(wd) or b""
if not path:
lui = ui
else:
lui = ui.copy()
if rcutil.use_repo_hgrc():
_readsharedsourceconfig(lui, path)
lui.readconfig(os.path.join(path, b".hg", b"hgrc"), path)
lui.readconfig(os.path.join(path, b".hg", b"hgrc-not-shared"), path)
if rpath:
path_obj = urlutil.get_clone_path_obj(lui, rpath)
path = path_obj.rawloc
lui = ui.copy()
if rcutil.use_repo_hgrc():
_readsharedsourceconfig(lui, path)
lui.readconfig(os.path.join(path, b".hg", b"hgrc"), path)
lui.readconfig(os.path.join(path, b".hg", b"hgrc-not-shared"), path)
if oldcwd:
os.chdir(oldcwd)
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(b"ui", b"strict")
aliases, entry = cmdutil.findcmd(cmd, cmdtable, strict)
except (error.AmbiguousCommand, error.UnknownCommand):
return
cmd = aliases[0]
fn = entry[0]
if cmd and hasattr(fn, 'shell'):
# shell alias shouldn't receive early options which are consumed by hg
_earlyopts, args = _earlysplitopts(args)
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 = req.earlyoptions[b'cwd']
if cwd:
os.chdir(cwd)
rpath = req.earlyoptions[b'repository']
path, lui = _getlocal(ui, rpath)
uis = {ui, lui}
if req.repo:
uis.add(req.repo.ui)
if (
req.earlyoptions[b'verbose']
or req.earlyoptions[b'debug']
or req.earlyoptions[b'quiet']
):
for opt in (b'verbose', b'debug', b'quiet'):
val = pycompat.bytestr(bool(req.earlyoptions[opt]))
for ui_ in uis:
ui_.setconfig(b'ui', opt, val, b'--' + opt)
if req.earlyoptions[b'profile']:
for ui_ in uis:
ui_.setconfig(b'profiling', b'enabled', b'true', b'--profile')
elif req.earlyoptions[b'profile'] is False:
# Check for it being set already, so that we don't pollute the config
# with this when using chg in the very common case that it's not
# enabled.
if lui.configbool(b'profiling', b'enabled'):
# Only do this on lui so that `chg foo` with a user config setting
# profiling.enabled=1 still shows profiling information (chg will
# specify `--no-profile` when `hg serve` is starting up, we don't
# want that to propagate to every later invocation).
lui.setconfig(b'profiling', b'enabled', b'false', b'--no-profile')
profile = lui.configbool(b'profiling', b'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:
# no additional configs will be set, set up the ui instances
for ui_ in uis:
extensions.populateui(ui_)
return shellaliasfn()
# check for fallback encoding
fallback = lui.config(b'ui', b'fallbackencoding')
if fallback:
encoding.fallbackencoding = fallback
fullargs = args
cmd, func, args, options, cmdoptions = _parse(lui, args)
# store the canonical command name in request object for later access
req.canonical_command = cmd
if options[b"config"] != req.earlyoptions[b"config"]:
raise error.InputError(_(b"option --config may not be abbreviated"))
if options[b"cwd"] != req.earlyoptions[b"cwd"]:
raise error.InputError(_(b"option --cwd may not be abbreviated"))
if options[b"repository"] != req.earlyoptions[b"repository"]:
raise error.InputError(
_(
b"option -R has to be separated from other options (e.g. not "
b"-qR) and --repository may only be abbreviated as --repo"
)
)
if options[b"debugger"] != req.earlyoptions[b"debugger"]:
raise error.InputError(
_(b"option --debugger may not be abbreviated")
)
# don't validate --profile/--traceback, which can be enabled from now
if options[b"encoding"]:
encoding.encoding = options[b"encoding"]
if options[b"encodingmode"]:
encoding.encodingmode = options[b"encodingmode"]
if options[b"time"]:
def get_times():
t = os.times()
if t[4] == 0.0:
# Windows leaves this as zero, so use time.perf_counter()
t = (t[0], t[1], t[2], t[3], util.timer())
return t
s = get_times()
def print_time():
t = get_times()
ui.warn(
_(b"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[b"profile"]:
profiler.start()
# if abbreviated version of this were used, take them in account, now
if options[b'verbose'] or options[b'debug'] or options[b'quiet']:
for opt in (b'verbose', b'debug', b'quiet'):
if options[opt] == req.earlyoptions[opt]:
continue
val = pycompat.bytestr(bool(options[opt]))
for ui_ in uis:
ui_.setconfig(b'ui', opt, val, b'--' + opt)
if options[b'traceback']:
for ui_ in uis:
ui_.setconfig(b'ui', b'traceback', b'on', b'--traceback')
if options[b'noninteractive']:
for ui_ in uis:
ui_.setconfig(b'ui', b'interactive', b'off', b'-y')
if cmdoptions.get(b'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[b'color']
for ui_ in uis:
if coloropt:
ui_.setconfig(b'ui', b'color', coloropt, b'--color')
color.setup(ui_)
if stringutil.parsebool(options[b'pager']):
# ui.pager() expects 'internal-always-' prefix in this case
ui.pager(b'internal-always-' + cmd)
elif options[b'pager'] != b'auto':
for ui_ in uis:
ui_.disablepager()
# configs are fully loaded, set up the ui instances
for ui_ in uis:
extensions.populateui(ui_)
if options[b'version']:
return commands.version_(ui)
if options[b'help']:
return commands.help_(ui, cmd, command=cmd is not None)
elif not cmd:
return commands.help_(ui, b'shortlist')
repo = None
cmdpats = args[:]
assert func is not None # help out pytype
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
repo.ui.fmsg = ui.fmsg
else:
try:
repo = hg.repository(
ui,
path=path,
presetupfuncs=req.prereposetups,
intents=func.intents,
)
if not repo.local():
raise error.InputError(
_(b"repository '%s' is not local") % path
)
repo.ui.setconfig(
b"bundle", b"mainreporoot", repo.root, b'repo'
)
except error.RequirementError:
raise
except error.RepoError:
if rpath: # invalid -R path
raise
if not func.optionalrepo:
if func.inferrepo and args and not path:
# try to infer -R from command args
repos = pycompat.maplist(cmdutil.findrepo, args)
guess = repos[0]
if guess and repos.count(guess) == len(repos):
req.args = [b'--repository', guess] + fullargs
req.earlyoptions[b'repository'] = guess
return _dispatch(req)
if not path:
raise error.InputError(
_(
b"no repository found in"
b" '%s' (.hg not found)"
)
% encoding.getcwd()
)
raise
if repo:
ui = repo.ui
if options[b'hidden']:
repo = repo.unfiltered()
args.insert(0, repo)
elif rpath:
ui.warn(_(b"warning: --repository ignored\n"))
msg = _formatargs(fullargs)
ui.log(b"command", b'%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:
with tracing.log("Running %s command" % cmd):
return cmdfunc()
except error.SignatureError:
raise error.CommandError(cmd, _(b'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, b'', b''
if ui.config(b'ui', b'supportcontact') is None:
for name, mod in extensions.extensions():
# 'testedwith' should be bytes, but not all extensions are ported
# to py3 and we don't want UnicodeException because of that.
testedwith = stringutil.forcebytestr(
getattr(mod, 'testedwith', b'')
)
version = extensions.moduleversion(mod)
report = getattr(mod, 'buglink', _(b'the extension author.'))
if not testedwith.strip():
# We found an untested extension. It's likely the culprit.
worst = name, b'unknown', report, version
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, version
if worst[0] is not None:
name, testedwith, report, version = worst
if not isinstance(testedwith, (bytes, str)):
testedwith = b'.'.join(
[stringutil.forcebytestr(c) for c in testedwith]
)
extver = version or _(b"(version N/A)")
warning = _(
b'** Unknown exception encountered with '
b'possibly-broken third-party extension "%s" %s\n'
b'** which supports versions %s of Mercurial.\n'
b'** Please disable "%s" and try your action again.\n'
b'** If that fixes the bug please report it to %s\n'
) % (name, extver, testedwith, name, stringutil.forcebytestr(report))
else:
bugtracker = ui.config(b'ui', b'supportcontact')
if bugtracker is None:
bugtracker = _(b"https://mercurial-scm.org/wiki/BugTracker")
warning = (
_(
b"** unknown exception encountered, "
b"please report by visiting\n** "
)
+ bugtracker
+ b'\n'
)
sysversion = pycompat.sysbytes(sys.version).replace(b'\n', b'')
def ext_with_ver(x):
ext = x[0]
ver = extensions.moduleversion(x[1])
if ver:
ext += b' ' + ver
return ext
warning += (
(_(b"** Python %s\n") % sysversion)
+ (_(b"** Mercurial Distributed SCM (version %s)\n") % util.version())
+ (
_(b"** Extensions loaded: %s\n")
% b", ".join(
[ext_with_ver(x) for x in sorted(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(
b"commandexception",
b"%s\n%s\n",
warning,
pycompat.sysbytes(traceback.format_exc()),
)
ui.warn(warning)
return False # re-raise the exception