Mercurial > hg-stable
annotate mercurial/dispatch.py @ 10364:de1e7099d100
dispatch: provide help for disabled extensions and commands
Before a command is declared unknown, each extension in hgext is searched,
starting with hgext.<cmdname>. If there's a matching command, a help message
suggests the appropriate extension and how to enable it.
Every extension could potentially be imported, but for cases like rebase,
relink, etc. only one extension is imported.
For the case of "hg help disabledext", if the extension is in hgext, the
extension description is read and a similar help suggestion is printed.
No extension import occurs.
author | Brodie Rao <me+hg@dackz.net> |
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date | Sun, 07 Feb 2010 14:01:43 +0100 |
parents | 08a0f04b56bd |
children | d216fa04e48a |
rev | line source |
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1 # dispatch.py - command dispatching for mercurial |
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2 # |
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from i18n import _ |
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9 import os, sys, atexit, signal, pdb, socket, errno, shlex, time |
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10 import util, commands, hg, fancyopts, extensions, hook, error |
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11 import cmdutil, encoding |
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12 import ui as _ui |
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13 |
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14 def run(): |
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15 "run the command in sys.argv" |
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16 sys.exit(dispatch(sys.argv[1:])) |
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17 |
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18 def dispatch(args): |
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19 "run the command specified in args" |
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20 try: |
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21 u = _ui.ui() |
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22 if '--traceback' in args: |
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23 u.setconfig('ui', 'traceback', 'on') |
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24 except util.Abort, inst: |
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25 sys.stderr.write(_("abort: %s\n") % inst) |
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26 return -1 |
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27 except error.ConfigError, inst: |
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28 sys.stderr.write(_("hg: %s\n") % inst) |
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29 return -1 |
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30 return _runcatch(u, args) |
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31 |
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32 def _runcatch(ui, args): |
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33 def catchterm(*args): |
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34 raise error.SignalInterrupt |
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35 |
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36 for name in 'SIGBREAK', 'SIGHUP', 'SIGTERM': |
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37 num = getattr(signal, name, None) |
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38 if num: |
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39 signal.signal(num, catchterm) |
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40 |
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41 try: |
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42 try: |
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43 # enter the debugger before command execution |
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44 if '--debugger' in args: |
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45 pdb.set_trace() |
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46 try: |
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47 return _dispatch(ui, args) |
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48 finally: |
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49 ui.flush() |
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50 except: |
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51 # enter the debugger when we hit an exception |
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52 if '--debugger' in args: |
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53 pdb.post_mortem(sys.exc_info()[2]) |
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54 ui.traceback() |
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55 raise |
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56 |
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57 # Global exception handling, alphabetically |
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58 # Mercurial-specific first, followed by built-in and library exceptions |
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59 except error.AmbiguousCommand, inst: |
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60 ui.warn(_("hg: command '%s' is ambiguous:\n %s\n") % |
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61 (inst.args[0], " ".join(inst.args[1]))) |
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62 except error.ConfigError, inst: |
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63 ui.warn(_("hg: %s\n") % inst.args[0]) |
7640 | 64 except error.LockHeld, inst: |
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65 if inst.errno == errno.ETIMEDOUT: |
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66 reason = _('timed out waiting for lock held by %s') % inst.locker |
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67 else: |
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68 reason = _('lock held by %s') % inst.locker |
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69 ui.warn(_("abort: %s: %s\n") % (inst.desc or inst.filename, reason)) |
7640 | 70 except error.LockUnavailable, inst: |
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71 ui.warn(_("abort: could not lock %s: %s\n") % |
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72 (inst.desc or inst.filename, inst.strerror)) |
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73 except error.ParseError, inst: |
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74 if inst.args[0]: |
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75 ui.warn(_("hg %s: %s\n") % (inst.args[0], inst.args[1])) |
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76 commands.help_(ui, inst.args[0]) |
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77 else: |
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78 ui.warn(_("hg: %s\n") % inst.args[1]) |
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79 commands.help_(ui, 'shortlist') |
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80 except error.RepoError, inst: |
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81 ui.warn(_("abort: %s!\n") % inst) |
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82 except error.ResponseError, inst: |
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83 ui.warn(_("abort: %s") % inst.args[0]) |
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84 if not isinstance(inst.args[1], basestring): |
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85 ui.warn(" %r\n" % (inst.args[1],)) |
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86 elif not inst.args[1]: |
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87 ui.warn(_(" empty string\n")) |
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88 else: |
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89 ui.warn("\n%r\n" % util.ellipsis(inst.args[1])) |
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91 ui.warn(_("abort: %s!\n") % inst) |
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92 except error.SignalInterrupt: |
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93 ui.warn(_("killed!\n")) |
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94 except error.UnknownCommand, inst: |
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95 ui.warn(_("hg: unknown command '%s'\n") % inst.args[0]) |
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96 try: |
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97 # check if the command is in a disabled extension |
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98 # (but don't check for extensions themselves) |
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99 commands.help_(ui, inst.args[0], unknowncmd=True) |
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100 except error.UnknownCommand: |
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101 commands.help_(ui, 'shortlist') |
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102 except util.Abort, inst: |
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103 ui.warn(_("abort: %s\n") % inst) |
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104 except ImportError, inst: |
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105 m = str(inst).split()[-1] |
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106 ui.warn(_("abort: could not import module %s!\n") % m) |
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107 if m in "mpatch bdiff".split(): |
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108 ui.warn(_("(did you forget to compile extensions?)\n")) |
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109 elif m in "zlib".split(): |
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110 ui.warn(_("(is your Python install correct?)\n")) |
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111 except IOError, inst: |
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112 if hasattr(inst, "code"): |
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113 ui.warn(_("abort: %s\n") % inst) |
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114 elif hasattr(inst, "reason"): |
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115 try: # usually it is in the form (errno, strerror) |
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116 reason = inst.reason.args[1] |
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117 except: # it might be anything, for example a string |
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118 reason = inst.reason |
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119 ui.warn(_("abort: error: %s\n") % reason) |
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120 elif hasattr(inst, "args") and inst.args[0] == errno.EPIPE: |
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121 if ui.debugflag: |
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122 ui.warn(_("broken pipe\n")) |
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123 elif getattr(inst, "strerror", None): |
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124 if getattr(inst, "filename", None): |
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125 ui.warn(_("abort: %s: %s\n") % (inst.strerror, inst.filename)) |
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126 else: |
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127 ui.warn(_("abort: %s\n") % inst.strerror) |
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128 else: |
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129 raise |
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130 except OSError, inst: |
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131 if getattr(inst, "filename", None): |
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132 ui.warn(_("abort: %s: %s\n") % (inst.strerror, inst.filename)) |
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133 else: |
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134 ui.warn(_("abort: %s\n") % inst.strerror) |
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135 except KeyboardInterrupt: |
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136 try: |
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137 ui.warn(_("interrupted!\n")) |
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138 except IOError, inst: |
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139 if inst.errno == errno.EPIPE: |
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140 if ui.debugflag: |
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141 ui.warn(_("\nbroken pipe\n")) |
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142 else: |
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143 raise |
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144 except MemoryError: |
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145 ui.warn(_("abort: out of memory\n")) |
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146 except SystemExit, inst: |
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147 # Commands shouldn't sys.exit directly, but give a return code. |
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148 # Just in case catch this and and pass exit code to caller. |
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149 return inst.code |
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150 except socket.error, inst: |
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151 ui.warn(_("abort: %s\n") % inst.args[-1]) |
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152 except: |
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153 ui.warn(_("** unknown exception encountered, details follow\n")) |
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154 ui.warn(_("** report bug details to " |
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change wiki/bts URLs to point to new hostname
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155 "http://mercurial.selenic.com/bts/\n")) |
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156 ui.warn(_("** or mercurial@selenic.com\n")) |
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157 ui.warn(_("** Mercurial Distributed SCM (version %s)\n") |
7632 | 158 % util.version()) |
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159 ui.warn(_("** Extensions loaded: %s\n") |
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160 % ", ".join([x[0] for x in extensions.extensions()])) |
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161 raise |
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162 |
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163 return -1 |
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164 |
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165 def _findrepo(p): |
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166 while not os.path.isdir(os.path.join(p, ".hg")): |
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167 oldp, p = p, os.path.dirname(p) |
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168 if p == oldp: |
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169 return None |
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170 |
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171 return p |
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172 |
8655 | 173 def aliasargs(fn): |
174 if hasattr(fn, 'args'): | |
175 return fn.args | |
176 return [] | |
177 | |
178 class cmdalias(object): | |
179 def __init__(self, name, definition, cmdtable): | |
180 self.name = name | |
181 self.definition = definition | |
182 self.args = [] | |
183 self.opts = [] | |
184 self.help = '' | |
185 self.norepo = True | |
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186 self.badalias = False |
8655 | 187 |
188 try: | |
189 cmdutil.findcmd(self.name, cmdtable, True) | |
190 self.shadows = True | |
191 except error.UnknownCommand: | |
192 self.shadows = False | |
193 | |
194 if not self.definition: | |
195 def fn(ui, *args): | |
196 ui.warn(_("no definition for alias '%s'\n") % self.name) | |
197 return 1 | |
198 self.fn = fn | |
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199 self.badalias = True |
8655 | 200 |
201 return | |
202 | |
203 args = shlex.split(self.definition) | |
204 cmd = args.pop(0) | |
205 | |
206 try: | |
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207 tableentry = cmdutil.findcmd(cmd, cmdtable, False)[1] |
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208 if len(tableentry) > 2: |
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209 self.fn, self.opts, self.help = tableentry |
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210 else: |
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211 self.fn, self.opts = tableentry |
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212 |
8655 | 213 self.args = aliasargs(self.fn) + args |
214 if cmd not in commands.norepo.split(' '): | |
215 self.norepo = False | |
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216 if self.help.startswith("hg " + cmd): |
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217 # drop prefix in old-style help lines so hg shows the alias |
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218 self.help = self.help[4 + len(cmd):] |
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219 self.__doc__ = _("alias for: hg %s\n\n%s") \ |
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220 % (definition, self.fn.__doc__) |
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221 |
8655 | 222 except error.UnknownCommand: |
223 def fn(ui, *args): | |
224 ui.warn(_("alias '%s' resolves to unknown command '%s'\n") \ | |
225 % (self.name, cmd)) | |
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226 try: |
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227 # check if the command is in a disabled extension |
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228 commands.help_(ui, cmd, unknowncmd=True) |
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229 except error.UnknownCommand: |
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230 pass |
8655 | 231 return 1 |
232 self.fn = fn | |
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233 self.badalias = True |
8655 | 234 except error.AmbiguousCommand: |
235 def fn(ui, *args): | |
236 ui.warn(_("alias '%s' resolves to ambiguous command '%s'\n") \ | |
237 % (self.name, cmd)) | |
238 return 1 | |
239 self.fn = fn | |
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240 self.badalias = True |
8655 | 241 |
242 def __call__(self, ui, *args, **opts): | |
243 if self.shadows: | |
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244 ui.debug("alias '%s' shadows command\n" % self.name) |
8655 | 245 |
246 return self.fn(ui, *args, **opts) | |
247 | |
248 def addaliases(ui, cmdtable): | |
249 # aliases are processed after extensions have been loaded, so they | |
250 # may use extension commands. Aliases can also use other alias definitions, | |
251 # but only if they have been defined prior to the current definition. | |
252 for alias, definition in ui.configitems('alias'): | |
253 aliasdef = cmdalias(alias, definition, cmdtable) | |
254 cmdtable[alias] = (aliasdef, aliasdef.opts, aliasdef.help) | |
255 if aliasdef.norepo: | |
256 commands.norepo += ' %s' % alias | |
257 | |
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258 def _parse(ui, args): |
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259 options = {} |
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260 cmdoptions = {} |
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261 |
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262 try: |
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263 args = fancyopts.fancyopts(args, commands.globalopts, options) |
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264 except fancyopts.getopt.GetoptError, inst: |
7636 | 265 raise error.ParseError(None, inst) |
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266 |
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267 if args: |
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268 cmd, args = args[0], args[1:] |
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269 aliases, entry = cmdutil.findcmd(cmd, commands.table, |
7224
12a90281d83d
Minor cleanup: Add missing space forgotten in recent change.
Thomas Arendsen Hein <thomas@intevation.de>
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270 ui.config("ui", "strict")) |
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271 cmd = aliases[0] |
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272 args = aliasargs(entry[0]) + args |
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273 defaults = ui.config("defaults", cmd) |
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274 if defaults: |
9610
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make path expanding more consistent
Alexander Solovyov <piranha@piranha.org.ua>
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275 args = map(util.expandpath, shlex.split(defaults)) + args |
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276 c = list(entry[1]) |
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277 else: |
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278 cmd = None |
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279 c = [] |
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280 |
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281 # combine global options into local |
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282 for o in commands.globalopts: |
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283 c.append((o[0], o[1], options[o[1]], o[3])) |
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284 |
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285 try: |
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fancyopts: Parse options that occur after arguments.
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7733
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286 args = fancyopts.fancyopts(args, c, cmdoptions, True) |
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287 except fancyopts.getopt.GetoptError, inst: |
7636 | 288 raise error.ParseError(cmd, inst) |
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289 |
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290 # separate global options back out |
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291 for o in commands.globalopts: |
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292 n = o[1] |
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293 options[n] = cmdoptions[n] |
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294 del cmdoptions[n] |
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295 |
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296 return (cmd, cmd and entry[0] or None, args, options, cmdoptions) |
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297 |
8137 | 298 def _parseconfig(ui, config): |
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299 """parse the --config options from the command line""" |
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300 for cfg in config: |
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301 try: |
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302 name, value = cfg.split('=', 1) |
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303 section, name = name.split('.', 1) |
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304 if not section or not name: |
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305 raise IndexError |
8137 | 306 ui.setconfig(section, name, value) |
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307 except (IndexError, ValueError): |
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308 raise util.Abort(_('malformed --config option: %r ' |
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309 '(use --config section.name=value)') % cfg) |
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310 |
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311 def _earlygetopt(aliases, args): |
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312 """Return list of values for an option (or aliases). |
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313 |
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314 The values are listed in the order they appear in args. |
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315 The options and values are removed from args. |
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316 """ |
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317 try: |
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318 argcount = args.index("--") |
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319 except ValueError: |
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320 argcount = len(args) |
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321 shortopts = [opt for opt in aliases if len(opt) == 2] |
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322 values = [] |
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323 pos = 0 |
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324 while pos < argcount: |
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325 if args[pos] in aliases: |
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326 if pos + 1 >= argcount: |
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327 # ignore and let getopt report an error if there is no value |
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328 break |
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329 del args[pos] |
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330 values.append(args.pop(pos)) |
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331 argcount -= 2 |
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332 elif args[pos][:2] in shortopts: |
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333 # short option can have no following space, e.g. hg log -Rfoo |
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334 values.append(args.pop(pos)[2:]) |
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335 argcount -= 1 |
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336 else: |
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337 pos += 1 |
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338 return values |
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339 |
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340 def runcommand(lui, repo, cmd, fullargs, ui, options, d): |
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341 # run pre-hook, and abort if it fails |
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342 ret = hook.hook(lui, repo, "pre-%s" % cmd, False, args=" ".join(fullargs)) |
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343 if ret: |
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344 return ret |
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345 ret = _runcommand(ui, options, cmd, d) |
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346 # run post-hook, passing command result |
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347 hook.hook(lui, repo, "post-%s" % cmd, False, args=" ".join(fullargs), |
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348 result = ret) |
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349 return ret |
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350 |
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351 _loaded = set() |
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352 def _dispatch(ui, args): |
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353 # read --config before doing anything else |
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354 # (e.g. to change trust settings for reading .hg/hgrc) |
8137 | 355 _parseconfig(ui, _earlygetopt(['--config'], args)) |
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356 |
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357 # check for cwd |
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358 cwd = _earlygetopt(['--cwd'], args) |
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359 if cwd: |
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360 os.chdir(cwd[-1]) |
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361 |
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362 # read the local repository .hgrc into a local ui object |
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363 path = _findrepo(os.getcwd()) or "" |
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364 if not path: |
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365 lui = ui |
9436 | 366 else: |
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367 try: |
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368 lui = ui.copy() |
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369 lui.readconfig(os.path.join(path, ".hg", "hgrc")) |
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370 except IOError: |
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371 pass |
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372 |
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373 # now we can expand paths, even ones in .hg/hgrc |
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374 rpath = _earlygetopt(["-R", "--repository", "--repo"], args) |
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375 if rpath: |
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376 path = lui.expandpath(rpath[-1]) |
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377 lui = ui.copy() |
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378 lui.readconfig(os.path.join(path, ".hg", "hgrc")) |
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379 |
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380 # Configure extensions in phases: uisetup, extsetup, cmdtable, and |
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381 # reposetup. Programs like TortoiseHg will call _dispatch several |
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382 # times so we keep track of configured extensions in _loaded. |
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383 extensions.loadall(lui) |
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384 exts = [ext for ext in extensions.extensions() if ext[0] not in _loaded] |
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385 |
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386 # (uisetup and extsetup are handled in extensions.loadall) |
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387 |
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388 for name, module in exts: |
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389 cmdtable = getattr(module, 'cmdtable', {}) |
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390 overrides = [cmd for cmd in cmdtable if cmd in commands.table] |
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391 if overrides: |
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392 ui.warn(_("extension '%s' overrides commands: %s\n") |
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393 % (name, " ".join(overrides))) |
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394 commands.table.update(cmdtable) |
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395 _loaded.add(name) |
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397 # (reposetup is handled in hg.repository) |
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398 |
8655 | 399 addaliases(lui, commands.table) |
400 | |
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401 # check for fallback encoding |
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402 fallback = lui.config('ui', 'fallbackencoding') |
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403 if fallback: |
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404 encoding.fallbackencoding = fallback |
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405 |
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406 fullargs = args |
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407 cmd, func, args, options, cmdoptions = _parse(lui, args) |
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408 |
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409 if options["config"]: |
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410 raise util.Abort(_("Option --config may not be abbreviated!")) |
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411 if options["cwd"]: |
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412 raise util.Abort(_("Option --cwd may not be abbreviated!")) |
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413 if options["repository"]: |
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414 raise util.Abort(_( |
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415 "Option -R has to be separated from other options (e.g. not -qR) " |
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416 "and --repository may only be abbreviated as --repo!")) |
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417 |
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418 if options["encoding"]: |
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419 encoding.encoding = options["encoding"] |
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420 if options["encodingmode"]: |
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421 encoding.encodingmode = options["encodingmode"] |
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422 if options["time"]: |
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423 def get_times(): |
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424 t = os.times() |
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425 if t[4] == 0.0: # Windows leaves this as zero, so use time.clock() |
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426 t = (t[0], t[1], t[2], t[3], time.clock()) |
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427 return t |
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428 s = get_times() |
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429 def print_time(): |
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430 t = get_times() |
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431 ui.warn(_("Time: real %.3f secs (user %.3f+%.3f sys %.3f+%.3f)\n") % |
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432 (t[4]-s[4], t[0]-s[0], t[2]-s[2], t[1]-s[1], t[3]-s[3])) |
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433 atexit.register(print_time) |
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434 |
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435 if options['verbose'] or options['debug'] or options['quiet']: |
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436 ui.setconfig('ui', 'verbose', str(bool(options['verbose']))) |
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437 ui.setconfig('ui', 'debug', str(bool(options['debug']))) |
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438 ui.setconfig('ui', 'quiet', str(bool(options['quiet']))) |
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439 if options['traceback']: |
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440 ui.setconfig('ui', 'traceback', 'on') |
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441 if options['noninteractive']: |
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442 ui.setconfig('ui', 'interactive', 'off') |
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443 |
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444 if options['help']: |
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445 return commands.help_(ui, cmd, options['version']) |
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446 elif options['version']: |
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447 return commands.version_(ui) |
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448 elif not cmd: |
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449 return commands.help_(ui, 'shortlist') |
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450 |
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451 repo = None |
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452 if cmd not in commands.norepo.split(): |
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453 try: |
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454 repo = hg.repository(ui, path=path) |
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455 ui = repo.ui |
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456 if not repo.local(): |
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457 raise util.Abort(_("repository '%s' is not local") % path) |
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458 ui.setconfig("bundle", "mainreporoot", repo.root) |
7637 | 459 except error.RepoError: |
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460 if cmd not in commands.optionalrepo.split(): |
6150
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Infer a --repository argument from command arguments when reasonable.
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461 if args and not path: # try to infer -R from command args |
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462 repos = map(_findrepo, args) |
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Infer a --repository argument from command arguments when reasonable.
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463 guess = repos[0] |
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Infer a --repository argument from command arguments when reasonable.
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464 if guess and repos.count(guess) == len(repos): |
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465 return _dispatch(ui, ['--repository', guess] + fullargs) |
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466 if not path: |
7637 | 467 raise error.RepoError(_("There is no Mercurial repository" |
468 " here (.hg not found)")) | |
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469 raise |
7388
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470 args.insert(0, repo) |
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471 elif rpath: |
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472 ui.warn("warning: --repository ignored\n") |
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473 |
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474 d = lambda: util.checksignature(func)(ui, *args, **cmdoptions) |
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475 return runcommand(lui, repo, cmd, fullargs, ui, options, d) |
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476 |
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477 def _runcommand(ui, options, cmd, cmdfunc): |
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478 def checkargs(): |
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479 try: |
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480 return cmdfunc() |
7646 | 481 except error.SignatureError: |
7636 | 482 raise error.ParseError(cmd, _("invalid arguments")) |
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483 |
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parents:
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484 if options['profile']: |
8023
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parents:
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485 format = ui.config('profiling', 'format', default='text') |
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486 |
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487 if not format in ['text', 'kcachegrind']: |
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488 ui.warn(_("unrecognized profiling format '%s'" |
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489 " - Ignored\n") % format) |
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490 format = 'text' |
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491 |
8022
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492 output = ui.config('profiling', 'output') |
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493 |
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494 if output: |
9610
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make path expanding more consistent
Alexander Solovyov <piranha@piranha.org.ua>
parents:
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495 path = ui.expandpath(output) |
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496 ostream = open(path, 'wb') |
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497 else: |
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498 ostream = sys.stderr |
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499 |
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500 try: |
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501 from mercurial import lsprof |
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|
502 except ImportError: |
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503 raise util.Abort(_( |
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|
504 'lsprof not available - install from ' |
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parents:
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505 'http://codespeak.net/svn/user/arigo/hack/misc/lsprof/')) |
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506 p = lsprof.Profiler() |
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507 p.enable(subcalls=True) |
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508 try: |
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parents:
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509 return checkargs() |
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510 finally: |
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changeset
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511 p.disable() |
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512 |
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513 if format == 'kcachegrind': |
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514 import lsprofcalltree |
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515 calltree = lsprofcalltree.KCacheGrind(p) |
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516 calltree.output(ostream) |
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517 else: |
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518 # format == 'text' |
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519 stats = lsprof.Stats(p.getstats()) |
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parents:
8023
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|
520 stats.sort() |
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parents:
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|
521 stats.pprint(top=10, file=ostream, climit=5) |
8022
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changeset
|
522 |
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|
523 if output: |
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524 ostream.close() |
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changeset
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525 else: |
6141
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Backed out changeset b913d3aacddc (see issue971/msg5317)
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parents:
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diff
changeset
|
526 return checkargs() |