Mercurial > hg
annotate mercurial/hook.py @ 32164:29e286fa4db0
changegroup: deduplicate 'getlocalchangegroup'
The two functions 'getlocalchangegroup' and 'getchangegroup' have been strictly
identical for multiple years ('getchangegroup' had a deprecated docstring)
We'll drop one of them (getlocalchangegroup, since it has the longest name).
However, we needs to migrate all users of the dropped one to the new one before
we can deprecate it. In the mean time we drop one of the duplicated definition
and the outdated docstring.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Thu, 04 May 2017 12:36:45 +0200 |
parents | aff7b32b3c05 |
children | 4b426ae96ff2 |
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1 # hook.py - hook support for mercurial |
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2 # |
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3 # Copyright 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 __future__ import absolute_import |
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9 |
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10 import os |
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11 import sys |
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12 |
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13 from .i18n import _ |
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14 from . import ( |
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15 demandimport, |
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16 error, |
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17 extensions, |
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18 pycompat, |
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19 util, |
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20 ) |
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21 |
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22 def _pythonhook(ui, repo, htype, hname, funcname, args, throw): |
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23 '''call python hook. hook is callable object, looked up as |
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24 name in python module. if callable returns "true", hook |
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25 fails, else passes. if hook raises exception, treated as |
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26 hook failure. exception propagates if throw is "true". |
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27 |
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28 reason for "true" meaning "hook failed" is so that |
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29 unmodified commands (e.g. mercurial.commands.update) can |
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30 be run as hooks without wrappers to convert return values.''' |
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31 |
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32 if callable(funcname): |
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33 obj = funcname |
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34 funcname = obj.__module__ + "." + obj.__name__ |
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35 else: |
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36 d = funcname.rfind('.') |
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37 if d == -1: |
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38 raise error.HookLoadError( |
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39 _('%s hook is invalid: "%s" not in a module') |
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40 % (hname, funcname)) |
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41 modname = funcname[:d] |
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42 oldpaths = sys.path |
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43 if util.mainfrozen(): |
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44 # binary installs require sys.path manipulation |
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45 modpath, modfile = os.path.split(modname) |
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46 if modpath and modfile: |
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47 sys.path = sys.path[:] + [modpath] |
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48 modname = modfile |
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49 with demandimport.deactivated(): |
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50 try: |
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51 obj = __import__(modname) |
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52 except (ImportError, SyntaxError): |
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53 e1 = sys.exc_info() |
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54 try: |
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55 # extensions are loaded with hgext_ prefix |
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56 obj = __import__("hgext_%s" % modname) |
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57 except (ImportError, SyntaxError): |
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58 e2 = sys.exc_info() |
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59 if ui.tracebackflag: |
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60 ui.warn(_('exception from first failed import ' |
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61 'attempt:\n')) |
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62 ui.traceback(e1) |
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63 if ui.tracebackflag: |
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64 ui.warn(_('exception from second failed import ' |
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65 'attempt:\n')) |
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66 ui.traceback(e2) |
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67 |
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68 if not ui.tracebackflag: |
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69 tracebackhint = _( |
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70 'run with --traceback for stack trace') |
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71 else: |
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72 tracebackhint = None |
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73 raise error.HookLoadError( |
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74 _('%s hook is invalid: import of "%s" failed') % |
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75 (hname, modname), hint=tracebackhint) |
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76 sys.path = oldpaths |
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77 try: |
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78 for p in funcname.split('.')[1:]: |
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79 obj = getattr(obj, p) |
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80 except AttributeError: |
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81 raise error.HookLoadError( |
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82 _('%s hook is invalid: "%s" is not defined') |
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83 % (hname, funcname)) |
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86 _('%s hook is invalid: "%s" is not callable') |
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87 % (hname, funcname)) |
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88 |
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89 ui.note(_("calling hook %s: %s\n") % (hname, funcname)) |
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90 starttime = util.timer() |
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91 |
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92 try: |
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93 r = obj(ui=ui, repo=repo, hooktype=htype, **args) |
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94 except Exception as exc: |
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95 if isinstance(exc, error.Abort): |
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96 ui.warn(_('error: %s hook failed: %s\n') % |
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97 (hname, exc.args[0])) |
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98 else: |
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99 ui.warn(_('error: %s hook raised an exception: ' |
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100 '%s\n') % (hname, exc)) |
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101 if throw: |
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102 raise |
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103 if not ui.tracebackflag: |
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104 ui.warn(_('(run with --traceback for stack trace)\n')) |
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105 ui.traceback() |
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106 return True, True |
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107 finally: |
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108 duration = util.timer() - starttime |
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109 ui.log('pythonhook', 'pythonhook-%s: %s finished in %0.2f seconds\n', |
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110 htype, funcname, duration) |
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111 if r: |
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112 if throw: |
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113 raise error.HookAbort(_('%s hook failed') % hname) |
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114 ui.warn(_('warning: %s hook failed\n') % hname) |
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115 return r, False |
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116 |
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117 def _exthook(ui, repo, htype, name, cmd, args, throw): |
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118 ui.note(_("running hook %s: %s\n") % (name, cmd)) |
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119 |
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120 starttime = util.timer() |
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121 env = {} |
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122 |
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123 # make in-memory changes visible to external process |
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124 if repo is not None: |
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125 tr = repo.currenttransaction() |
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126 repo.dirstate.write(tr) |
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127 if tr and tr.writepending(): |
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128 env['HG_PENDING'] = repo.root |
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129 env['HG_HOOKTYPE'] = htype |
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130 env['HG_HOOKNAME'] = name |
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131 |
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132 for k, v in args.iteritems(): |
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133 if callable(v): |
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134 v = v() |
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135 if isinstance(v, dict): |
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136 # make the dictionary element order stable across Python |
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137 # implementations |
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138 v = ('{' + |
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139 ', '.join('%r: %r' % i for i in sorted(v.iteritems())) + |
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140 '}') |
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141 env['HG_' + k.upper()] = v |
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142 |
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143 if repo: |
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144 cwd = repo.root |
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145 else: |
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146 cwd = pycompat.getcwd() |
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147 r = ui.system(cmd, environ=env, cwd=cwd, blockedtag='exthook-%s' % (name,)) |
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148 |
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149 duration = util.timer() - starttime |
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150 ui.log('exthook', 'exthook-%s: %s finished in %0.2f seconds\n', |
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151 name, cmd, duration) |
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152 if r: |
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153 desc, r = util.explainexit(r) |
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154 if throw: |
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155 raise error.HookAbort(_('%s hook %s') % (name, desc)) |
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156 ui.warn(_('warning: %s hook %s\n') % (name, desc)) |
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157 return r |
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158 |
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159 # represent an untrusted hook command |
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160 _fromuntrusted = object() |
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161 |
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162 def _allhooks(ui): |
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163 """return a list of (hook-id, cmd) pairs sorted by priority""" |
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164 hooks = _hookitems(ui) |
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165 # Be careful in this section, propagating the real commands from untrusted |
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166 # sources would create a security vulnerability, make sure anything altered |
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167 # in that section uses "_fromuntrusted" as its command. |
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168 untrustedhooks = _hookitems(ui, _untrusted=True) |
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169 for name, value in untrustedhooks.items(): |
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170 trustedvalue = hooks.get(name, (None, None, name, _fromuntrusted)) |
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171 if value != trustedvalue: |
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172 (lp, lo, lk, lv) = trustedvalue |
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173 hooks[name] = (lp, lo, lk, _fromuntrusted) |
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174 # (end of the security sensitive section) |
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175 return [(k, v) for p, o, k, v in sorted(hooks.values())] |
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176 |
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177 def _hookitems(ui, _untrusted=False): |
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178 """return all hooks items ready to be sorted""" |
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179 hooks = {} |
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180 for name, cmd in ui.configitems('hooks', untrusted=_untrusted): |
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181 if not name.startswith('priority'): |
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182 priority = ui.configint('hooks', 'priority.%s' % name, 0) |
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183 hooks[name] = (-priority, len(hooks), name, cmd) |
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184 return hooks |
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185 |
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186 _redirect = False |
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187 def redirect(state): |
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188 global _redirect |
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189 _redirect = state |
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190 |
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191 def hook(ui, repo, htype, throw=False, **args): |
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192 if not ui.callhooks: |
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193 return False |
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194 |
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195 hooks = [] |
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196 for hname, cmd in _allhooks(ui): |
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197 if hname.split('.')[0] == htype and cmd: |
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198 hooks.append((hname, cmd)) |
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199 |
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200 res = runhooks(ui, repo, htype, hooks, throw=throw, **args) |
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201 r = False |
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202 for hname, cmd in hooks: |
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203 r = res[hname][0] or r |
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204 return r |
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205 |
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206 def runhooks(ui, repo, htype, hooks, throw=False, **args): |
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207 res = {} |
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208 oldstdout = -1 |
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209 |
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210 try: |
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211 for hname, cmd in hooks: |
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212 if oldstdout == -1 and _redirect: |
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213 try: |
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214 stdoutno = util.stdout.fileno() |
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215 stderrno = util.stderr.fileno() |
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216 # temporarily redirect stdout to stderr, if possible |
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217 if stdoutno >= 0 and stderrno >= 0: |
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218 util.stdout.flush() |
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219 oldstdout = os.dup(stdoutno) |
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220 os.dup2(stderrno, stdoutno) |
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221 except (OSError, AttributeError): |
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222 # files seem to be bogus, give up on redirecting (WSGI, etc) |
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223 pass |
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224 |
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225 if cmd is _fromuntrusted: |
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226 if throw: |
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227 raise error.HookAbort( |
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228 _('untrusted hook %s not executed') % hname, |
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229 hint = _("see 'hg help config.trusted'")) |
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230 ui.warn(_('warning: untrusted hook %s not executed\n') % hname) |
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231 r = 1 |
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232 raised = False |
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233 elif callable(cmd): |
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234 r, raised = _pythonhook(ui, repo, htype, hname, cmd, args, |
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235 throw) |
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236 elif cmd.startswith('python:'): |
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237 if cmd.count(':') >= 2: |
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238 path, cmd = cmd[7:].rsplit(':', 1) |
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239 path = util.expandpath(path) |
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240 if repo: |
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241 path = os.path.join(repo.root, path) |
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242 try: |
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243 mod = extensions.loadpath(path, 'hghook.%s' % hname) |
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244 except Exception: |
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245 ui.write(_("loading %s hook failed:\n") % hname) |
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246 raise |
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247 hookfn = getattr(mod, cmd) |
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248 else: |
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249 hookfn = cmd[7:].strip() |
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250 r, raised = _pythonhook(ui, repo, htype, hname, hookfn, args, |
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251 throw) |
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252 else: |
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253 r = _exthook(ui, repo, htype, hname, cmd, args, throw) |
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254 raised = False |
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255 |
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256 res[hname] = r, raised |
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257 |
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258 # The stderr is fully buffered on Windows when connected to a pipe. |
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259 # A forcible flush is required to make small stderr data in the |
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260 # remote side available to the client immediately. |
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261 util.stderr.flush() |
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262 finally: |
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263 if _redirect and oldstdout >= 0: |
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264 util.stdout.flush() # write hook output to stderr fd |
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265 os.dup2(oldstdout, stdoutno) |
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266 os.close(oldstdout) |
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267 |
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268 return res |