mirror of
https://github.com/facebook/sapling.git
synced 2024-10-10 16:57:49 +03:00
8ac447bbd7
This pulls the pre-command hook/command/post-command hook workflow out of the method it is in and puts it into its own method so that it potentially could be exposed for extensions to wrap.
418 lines
14 KiB
Python
418 lines
14 KiB
Python
# dispatch.py - command dispatching for mercurial
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#
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# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms
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# of the GNU General Public License, incorporated herein by reference.
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from i18n import _
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import os, sys, atexit, signal, pdb, socket, errno, shlex, time
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import util, commands, hg, lock, fancyopts, extensions, hook, error
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import cmdutil
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import ui as _ui
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def run():
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"run the command in sys.argv"
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sys.exit(dispatch(sys.argv[1:]))
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def dispatch(args):
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"run the command specified in args"
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try:
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u = _ui.ui(traceback='--traceback' in args)
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except util.Abort, inst:
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sys.stderr.write(_("abort: %s\n") % inst)
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return -1
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return _runcatch(u, args)
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def _runcatch(ui, args):
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def catchterm(*args):
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raise error.SignalInterrupt
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for name in 'SIGBREAK', 'SIGHUP', 'SIGTERM':
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num = getattr(signal, name, None)
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if num: signal.signal(num, catchterm)
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try:
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try:
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# enter the debugger before command execution
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if '--debugger' in args:
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pdb.set_trace()
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try:
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return _dispatch(ui, args)
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finally:
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ui.flush()
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except:
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# enter the debugger when we hit an exception
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if '--debugger' in args:
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pdb.post_mortem(sys.exc_info()[2])
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ui.print_exc()
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raise
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# Global exception handling, alphabetically
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# Mercurial-specific first, followed by built-in and library exceptions
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except error.AmbiguousCommand, inst:
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ui.warn(_("hg: command '%s' is ambiguous:\n %s\n") %
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(inst.args[0], " ".join(inst.args[1])))
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except error.LockHeld, inst:
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if inst.errno == errno.ETIMEDOUT:
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reason = _('timed out waiting for lock held by %s') % inst.locker
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else:
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reason = _('lock held by %s') % inst.locker
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ui.warn(_("abort: %s: %s\n") % (inst.desc or inst.filename, reason))
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except error.LockUnavailable, inst:
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ui.warn(_("abort: could not lock %s: %s\n") %
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(inst.desc or inst.filename, inst.strerror))
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except error.ParseError, inst:
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if inst.args[0]:
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ui.warn(_("hg %s: %s\n") % (inst.args[0], inst.args[1]))
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commands.help_(ui, inst.args[0])
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else:
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ui.warn(_("hg: %s\n") % inst.args[1])
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commands.help_(ui, 'shortlist')
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except error.RepoError, inst:
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ui.warn(_("abort: %s!\n") % inst)
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except error.ResponseError, inst:
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ui.warn(_("abort: %s") % inst.args[0])
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if not isinstance(inst.args[1], basestring):
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ui.warn(" %r\n" % (inst.args[1],))
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elif not inst.args[1]:
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ui.warn(_(" empty string\n"))
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else:
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ui.warn("\n%r\n" % util.ellipsis(inst.args[1]))
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except error.RevlogError, inst:
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ui.warn(_("abort: %s!\n") % inst)
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except error.SignalInterrupt:
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ui.warn(_("killed!\n"))
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except error.UnknownCommand, inst:
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ui.warn(_("hg: unknown command '%s'\n") % inst.args[0])
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commands.help_(ui, 'shortlist')
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except util.Abort, inst:
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ui.warn(_("abort: %s\n") % inst)
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except ImportError, inst:
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m = str(inst).split()[-1]
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ui.warn(_("abort: could not import module %s!\n") % m)
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if m in "mpatch bdiff".split():
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ui.warn(_("(did you forget to compile extensions?)\n"))
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elif m in "zlib".split():
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ui.warn(_("(is your Python install correct?)\n"))
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except IOError, inst:
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if hasattr(inst, "code"):
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ui.warn(_("abort: %s\n") % inst)
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elif hasattr(inst, "reason"):
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try: # usually it is in the form (errno, strerror)
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reason = inst.reason.args[1]
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except: # it might be anything, for example a string
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reason = inst.reason
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ui.warn(_("abort: error: %s\n") % reason)
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elif hasattr(inst, "args") and inst.args[0] == errno.EPIPE:
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if ui.debugflag:
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ui.warn(_("broken pipe\n"))
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elif getattr(inst, "strerror", None):
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if getattr(inst, "filename", None):
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ui.warn(_("abort: %s: %s\n") % (inst.strerror, inst.filename))
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else:
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ui.warn(_("abort: %s\n") % inst.strerror)
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else:
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raise
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except OSError, inst:
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if getattr(inst, "filename", None):
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ui.warn(_("abort: %s: %s\n") % (inst.strerror, inst.filename))
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else:
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ui.warn(_("abort: %s\n") % inst.strerror)
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except KeyboardInterrupt:
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try:
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ui.warn(_("interrupted!\n"))
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except IOError, inst:
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if inst.errno == errno.EPIPE:
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if ui.debugflag:
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ui.warn(_("\nbroken pipe\n"))
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else:
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raise
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except MemoryError:
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ui.warn(_("abort: out of memory\n"))
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except SystemExit, inst:
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# Commands shouldn't sys.exit directly, but give a return code.
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# Just in case catch this and and pass exit code to caller.
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return inst.code
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except socket.error, inst:
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ui.warn(_("abort: %s\n") % inst.args[-1])
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except:
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ui.warn(_("** unknown exception encountered, details follow\n"))
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ui.warn(_("** report bug details to "
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"http://www.selenic.com/mercurial/bts\n"))
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ui.warn(_("** or mercurial@selenic.com\n"))
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ui.warn(_("** Mercurial Distributed SCM (version %s)\n")
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% util.version())
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ui.warn(_("** Extensions loaded: %s\n")
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% ", ".join([x[0] for x in extensions.extensions()]))
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raise
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return -1
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def _findrepo(p):
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while not os.path.isdir(os.path.join(p, ".hg")):
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oldp, p = p, os.path.dirname(p)
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if p == oldp:
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return None
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return p
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def _parse(ui, args):
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options = {}
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cmdoptions = {}
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try:
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args = fancyopts.fancyopts(args, commands.globalopts, options)
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except fancyopts.getopt.GetoptError, inst:
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raise error.ParseError(None, inst)
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if args:
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cmd, args = args[0], args[1:]
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aliases, i = cmdutil.findcmd(cmd, commands.table,
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ui.config("ui", "strict"))
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cmd = aliases[0]
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defaults = ui.config("defaults", cmd)
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if defaults:
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args = shlex.split(defaults) + args
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c = list(i[1])
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else:
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cmd = None
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c = []
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# combine global options into local
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for o in commands.globalopts:
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c.append((o[0], o[1], options[o[1]], o[3]))
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try:
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args = fancyopts.fancyopts(args, c, cmdoptions, True)
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except fancyopts.getopt.GetoptError, inst:
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raise error.ParseError(cmd, inst)
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# separate global options back out
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for o in commands.globalopts:
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n = o[1]
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options[n] = cmdoptions[n]
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del cmdoptions[n]
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return (cmd, cmd and i[0] or None, args, options, cmdoptions)
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def _parseconfig(config):
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"""parse the --config options from the command line"""
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parsed = []
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for cfg in config:
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try:
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name, value = cfg.split('=', 1)
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section, name = name.split('.', 1)
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if not section or not name:
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raise IndexError
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parsed.append((section, name, value))
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except (IndexError, ValueError):
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raise util.Abort(_('malformed --config option: %s') % cfg)
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return parsed
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def _earlygetopt(aliases, args):
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"""Return list of values for an option (or aliases).
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The values are listed in the order they appear in args.
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The options and values are removed from args.
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"""
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try:
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argcount = args.index("--")
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except ValueError:
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argcount = len(args)
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shortopts = [opt for opt in aliases if len(opt) == 2]
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values = []
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pos = 0
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while pos < argcount:
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if args[pos] in aliases:
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if pos + 1 >= argcount:
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# ignore and let getopt report an error if there is no value
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break
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del args[pos]
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values.append(args.pop(pos))
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argcount -= 2
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elif args[pos][:2] in shortopts:
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# short option can have no following space, e.g. hg log -Rfoo
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values.append(args.pop(pos)[2:])
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argcount -= 1
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else:
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pos += 1
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return values
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def runcommand(lui, repo, cmd, fullargs, ui, options, d):
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# run pre-hook, and abort if it fails
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ret = hook.hook(lui, repo, "pre-%s" % cmd, False, args=" ".join(fullargs))
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if ret:
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return ret
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ret = _runcommand(ui, options, cmd, d)
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# run post-hook, passing command result
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hook.hook(lui, repo, "post-%s" % cmd, False, args=" ".join(fullargs),
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result = ret)
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return ret
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_loaded = {}
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def _dispatch(ui, args):
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# read --config before doing anything else
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# (e.g. to change trust settings for reading .hg/hgrc)
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config = _earlygetopt(['--config'], args)
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if config:
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ui.updateopts(config=_parseconfig(config))
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# check for cwd
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cwd = _earlygetopt(['--cwd'], args)
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if cwd:
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os.chdir(cwd[-1])
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# read the local repository .hgrc into a local ui object
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path = _findrepo(os.getcwd()) or ""
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if not path:
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lui = ui
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if path:
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try:
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lui = _ui.ui(parentui=ui)
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lui.readconfig(os.path.join(path, ".hg", "hgrc"))
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except IOError:
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pass
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# now we can expand paths, even ones in .hg/hgrc
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rpath = _earlygetopt(["-R", "--repository", "--repo"], args)
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if rpath:
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path = lui.expandpath(rpath[-1])
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lui = _ui.ui(parentui=ui)
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lui.readconfig(os.path.join(path, ".hg", "hgrc"))
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extensions.loadall(lui)
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for name, module in extensions.extensions():
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if name in _loaded:
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continue
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# setup extensions
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# TODO this should be generalized to scheme, where extensions can
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# redepend on other extensions. then we should toposort them, and
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# do initialization in correct order
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extsetup = getattr(module, 'extsetup', None)
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if extsetup:
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extsetup()
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cmdtable = getattr(module, 'cmdtable', {})
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overrides = [cmd for cmd in cmdtable if cmd in commands.table]
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if overrides:
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ui.warn(_("extension '%s' overrides commands: %s\n")
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% (name, " ".join(overrides)))
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commands.table.update(cmdtable)
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_loaded[name] = 1
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# check for fallback encoding
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fallback = lui.config('ui', 'fallbackencoding')
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if fallback:
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util._fallbackencoding = fallback
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fullargs = args
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cmd, func, args, options, cmdoptions = _parse(lui, args)
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if options["config"]:
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raise util.Abort(_("Option --config may not be abbreviated!"))
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if options["cwd"]:
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raise util.Abort(_("Option --cwd may not be abbreviated!"))
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if options["repository"]:
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raise util.Abort(_(
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"Option -R has to be separated from other options (i.e. not -qR) "
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"and --repository may only be abbreviated as --repo!"))
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if options["encoding"]:
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util._encoding = options["encoding"]
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if options["encodingmode"]:
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util._encodingmode = options["encodingmode"]
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if options["time"]:
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def get_times():
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t = os.times()
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if t[4] == 0.0: # Windows leaves this as zero, so use time.clock()
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t = (t[0], t[1], t[2], t[3], time.clock())
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return t
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s = get_times()
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def print_time():
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t = get_times()
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ui.warn(_("Time: real %.3f secs (user %.3f+%.3f sys %.3f+%.3f)\n") %
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(t[4]-s[4], t[0]-s[0], t[2]-s[2], t[1]-s[1], t[3]-s[3]))
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atexit.register(print_time)
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ui.updateopts(options["verbose"], options["debug"], options["quiet"],
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not options["noninteractive"], options["traceback"])
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if options['help']:
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return commands.help_(ui, cmd, options['version'])
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elif options['version']:
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return commands.version_(ui)
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elif not cmd:
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return commands.help_(ui, 'shortlist')
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repo = None
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if cmd not in commands.norepo.split():
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try:
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repo = hg.repository(ui, path=path)
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ui = repo.ui
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if not repo.local():
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raise util.Abort(_("repository '%s' is not local") % path)
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ui.setconfig("bundle", "mainreporoot", repo.root)
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except error.RepoError:
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if cmd not in commands.optionalrepo.split():
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if args and not path: # try to infer -R from command args
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repos = map(_findrepo, args)
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guess = repos[0]
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if guess and repos.count(guess) == len(repos):
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return _dispatch(ui, ['--repository', guess] + fullargs)
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if not path:
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raise error.RepoError(_("There is no Mercurial repository"
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" here (.hg not found)"))
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raise
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args.insert(0, repo)
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elif rpath:
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ui.warn("warning: --repository ignored\n")
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d = lambda: util.checksignature(func)(ui, *args, **cmdoptions)
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return runcommand(lui, repo, cmd, fullargs, ui, options, d)
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def _runcommand(ui, options, cmd, cmdfunc):
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def checkargs():
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try:
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return cmdfunc()
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except error.SignatureError:
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raise error.ParseError(cmd, _("invalid arguments"))
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if options['profile']:
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import hotshot, hotshot.stats
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prof = hotshot.Profile("hg.prof")
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try:
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try:
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return prof.runcall(checkargs)
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except:
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try:
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ui.warn(_('exception raised - generating '
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'profile anyway\n'))
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except:
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pass
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raise
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finally:
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prof.close()
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stats = hotshot.stats.load("hg.prof")
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stats.strip_dirs()
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stats.sort_stats('time', 'calls')
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stats.print_stats(40)
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elif options['lsprof']:
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try:
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from mercurial import lsprof
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except ImportError:
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raise util.Abort(_(
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'lsprof not available - install from '
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'http://codespeak.net/svn/user/arigo/hack/misc/lsprof/'))
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p = lsprof.Profiler()
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p.enable(subcalls=True)
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try:
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return checkargs()
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finally:
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p.disable()
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stats = lsprof.Stats(p.getstats())
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stats.sort()
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stats.pprint(top=10, file=sys.stderr, climit=5)
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else:
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return checkargs()
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