Mercurial > hg
annotate mercurial/hook.py @ 27033:089dab8794dc
filemerge: return whether the file is deleted from all other merge tools
This is required for change/delete conflicts -- see the previous patch for more
information.
author | Siddharth Agarwal <sid0@fb.com> |
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date | Wed, 18 Nov 2015 13:55:31 -0800 |
parents | 10a1a4b3e775 |
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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 import time |
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13 |
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14 from .i18n import _ |
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15 from . import ( |
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16 demandimport, |
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17 error, |
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18 extensions, |
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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, name, 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: |
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53 e1 = sys.exc_type, sys.exc_value, sys.exc_traceback |
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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: |
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58 e2 = sys.exc_type, sys.exc_value, sys.exc_traceback |
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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 raise error.HookLoadError( |
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68 _('%s hook is invalid (import of "%s" failed)') % |
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69 (hname, modname)) |
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70 sys.path = oldpaths |
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71 try: |
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72 for p in funcname.split('.')[1:]: |
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73 obj = getattr(obj, p) |
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74 except AttributeError: |
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75 raise error.HookLoadError( |
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76 _('%s hook is invalid ("%s" is not defined)') |
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77 % (hname, funcname)) |
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78 if not callable(obj): |
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79 raise error.HookLoadError( |
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80 _('%s hook is invalid ("%s" is not callable)') |
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81 % (hname, funcname)) |
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82 |
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83 ui.note(_("calling hook %s: %s\n") % (hname, funcname)) |
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84 starttime = time.time() |
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85 |
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86 try: |
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87 # redirect IO descriptors to the ui descriptors so hooks |
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88 # that write directly to these don't mess up the command |
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89 # protocol when running through the command server |
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90 old = sys.stdout, sys.stderr, sys.stdin |
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91 sys.stdout, sys.stderr, sys.stdin = ui.fout, ui.ferr, ui.fin |
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92 |
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93 r = obj(ui=ui, repo=repo, hooktype=name, **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 ui.traceback() |
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104 return True, True |
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105 finally: |
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106 sys.stdout, sys.stderr, sys.stdin = old |
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107 duration = time.time() - starttime |
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108 ui.log('pythonhook', 'pythonhook-%s: %s finished in %0.2f seconds\n', |
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109 name, funcname, duration) |
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110 if r: |
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111 if throw: |
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112 raise error.HookAbort(_('%s hook failed') % hname) |
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113 ui.warn(_('warning: %s hook failed\n') % hname) |
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114 return r, False |
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115 |
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116 def _exthook(ui, repo, name, cmd, args, throw): |
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117 ui.note(_("running hook %s: %s\n") % (name, cmd)) |
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118 |
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119 starttime = time.time() |
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120 env = {} |
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121 |
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122 # make in-memory changes visible to external process |
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123 tr = repo.currenttransaction() |
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124 repo.dirstate.write(tr) |
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125 if tr and tr.writepending(): |
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126 env['HG_PENDING'] = repo.root |
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127 |
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128 for k, v in args.iteritems(): |
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129 if callable(v): |
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130 v = v() |
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131 if isinstance(v, dict): |
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132 # make the dictionary element order stable across Python |
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133 # implementations |
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134 v = ('{' + |
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135 ', '.join('%r: %r' % i for i in sorted(v.iteritems())) + |
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136 '}') |
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137 env['HG_' + k.upper()] = v |
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138 |
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139 if repo: |
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140 cwd = repo.root |
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141 else: |
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142 cwd = os.getcwd() |
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143 r = ui.system(cmd, environ=env, cwd=cwd) |
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144 |
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145 duration = time.time() - starttime |
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146 ui.log('exthook', 'exthook-%s: %s finished in %0.2f seconds\n', |
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147 name, cmd, duration) |
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148 if r: |
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149 desc, r = util.explainexit(r) |
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150 if throw: |
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151 raise error.HookAbort(_('%s hook %s') % (name, desc)) |
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152 ui.warn(_('warning: %s hook %s\n') % (name, desc)) |
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153 return r |
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154 |
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155 def _allhooks(ui): |
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156 hooks = [] |
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157 for name, cmd in ui.configitems('hooks'): |
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158 if not name.startswith('priority'): |
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159 priority = ui.configint('hooks', 'priority.%s' % name, 0) |
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160 hooks.append((-priority, len(hooks), name, cmd)) |
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161 return [(k, v) for p, o, k, v in sorted(hooks)] |
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162 |
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163 _redirect = False |
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164 def redirect(state): |
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165 global _redirect |
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166 _redirect = state |
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167 |
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168 def hook(ui, repo, name, throw=False, **args): |
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169 if not ui.callhooks: |
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170 return False |
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171 |
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172 hooks = [] |
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173 for hname, cmd in _allhooks(ui): |
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174 if hname.split('.')[0] == name and cmd: |
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175 hooks.append((hname, cmd)) |
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176 |
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177 res = runhooks(ui, repo, name, hooks, throw=throw, **args) |
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178 r = False |
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179 for hname, cmd in hooks: |
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180 r = res[hname][0] or r |
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181 return r |
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182 |
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183 def runhooks(ui, repo, name, hooks, throw=False, **args): |
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184 res = {} |
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185 oldstdout = -1 |
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186 |
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187 try: |
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188 for hname, cmd in hooks: |
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189 if oldstdout == -1 and _redirect: |
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190 try: |
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191 stdoutno = sys.__stdout__.fileno() |
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192 stderrno = sys.__stderr__.fileno() |
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193 # temporarily redirect stdout to stderr, if possible |
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194 if stdoutno >= 0 and stderrno >= 0: |
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195 sys.__stdout__.flush() |
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196 oldstdout = os.dup(stdoutno) |
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197 os.dup2(stderrno, stdoutno) |
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198 except (OSError, AttributeError): |
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199 # files seem to be bogus, give up on redirecting (WSGI, etc) |
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200 pass |
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201 |
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202 if callable(cmd): |
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203 r, raised = _pythonhook(ui, repo, name, hname, cmd, args, throw) |
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204 elif cmd.startswith('python:'): |
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205 if cmd.count(':') >= 2: |
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206 path, cmd = cmd[7:].rsplit(':', 1) |
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207 path = util.expandpath(path) |
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208 if repo: |
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209 path = os.path.join(repo.root, path) |
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210 try: |
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211 mod = extensions.loadpath(path, 'hghook.%s' % hname) |
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212 except Exception: |
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213 ui.write(_("loading %s hook failed:\n") % hname) |
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214 raise |
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215 hookfn = getattr(mod, cmd) |
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216 else: |
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217 hookfn = cmd[7:].strip() |
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218 r, raised = _pythonhook(ui, repo, name, hname, hookfn, args, |
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219 throw) |
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220 else: |
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221 r = _exthook(ui, repo, hname, cmd, args, throw) |
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222 raised = False |
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223 |
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224 res[hname] = r, raised |
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225 |
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226 # The stderr is fully buffered on Windows when connected to a pipe. |
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227 # A forcible flush is required to make small stderr data in the |
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Matt Harbison <matt_harbison@yahoo.com>
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228 # remote side available to the client immediately. |
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hook: forcibly flush stderr for Windows test stability
Matt Harbison <matt_harbison@yahoo.com>
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229 sys.stderr.flush() |
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196b05a548d0
hooks: restore io correctly on exception
Jesse Long <jesse@virtualpostman.co.za>
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230 finally: |
9658
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hook: only redirect stdout if it and stderr are valid files
Sune Foldager <cryo@cyanite.org>
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231 if _redirect and oldstdout >= 0: |
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hook: only redirect stdout if it and stderr are valid files
Sune Foldager <cryo@cyanite.org>
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232 os.dup2(oldstdout, stdoutno) |
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hooks: restore io correctly on exception
Jesse Long <jesse@virtualpostman.co.za>
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233 os.close(oldstdout) |
6266
9f76df0edb7d
hook.py: fix redirections introduced by 323b9c55b328
Alexis S. L. Carvalho <alexis@cecm.usp.br>
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234 |
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hook.runhooks: return a dict of result values
Siddharth Agarwal <sid0@fb.com>
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235 return res |