annotate mercurial/hook.py @ 23643:2205d00b6d2b stable

demandimport: blacklist distutils.msvc9compiler (issue4475) This module depends on _winreg, which is windows-only. Recent versions of setuptools load distutils.msvc9compiler and expect it to ImportError immediately when on non-Windows platforms, so we need to let them do that. This breaks in an especially mystifying way, because setuptools uses vars() on the imported module. We then throw an exception, which vars doesn't pick up on well. For example: In [3]: class wat(object): ...: @property ...: def __dict__(self): ...: assert False ...: In [4]: vars(wat()) --------------------------------------------------------------------------- TypeError Traceback (most recent call last) <ipython-input-4-2781ada5ffe6> in <module>() ----> 1 vars(wat()) TypeError: vars() argument must have __dict__ attribute Which is similar to the problem we run into.
author Augie Fackler <raf@durin42.com>
date Mon, 22 Dec 2014 17:27:31 -0500
parents cdbb85489c41
children 19ebd2f88fc7
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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
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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, time
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10 import extensions, util, demandimport, error
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11
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12 def _pythonhook(ui, repo, name, hname, funcname, args, throw):
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13 '''call python hook. hook is callable object, looked up as
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14 name in python module. if callable returns "true", hook
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15 fails, else passes. if hook raises exception, treated as
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16 hook failure. exception propagates if throw is "true".
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17
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18 reason for "true" meaning "hook failed" is so that
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19 unmodified commands (e.g. mercurial.commands.update) can
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20 be run as hooks without wrappers to convert return values.'''
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21
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22 if callable(funcname):
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23 obj = funcname
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24 funcname = obj.__module__ + "." + obj.__name__
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25 else:
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26 d = funcname.rfind('.')
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27 if d == -1:
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28 raise util.Abort(_('%s hook is invalid ("%s" not in '
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29 'a module)') % (hname, funcname))
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30 modname = funcname[:d]
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31 oldpaths = sys.path
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32 if util.mainfrozen():
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33 # binary installs require sys.path manipulation
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34 modpath, modfile = os.path.split(modname)
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35 if modpath and modfile:
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36 sys.path = sys.path[:] + [modpath]
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37 modname = modfile
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38 demandimportenabled = demandimport.isenabled()
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39 if demandimportenabled:
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40 demandimport.disable()
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41 try:
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42 try:
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43 obj = __import__(modname)
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44 except ImportError:
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45 e1 = sys.exc_type, sys.exc_value, sys.exc_traceback
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46 try:
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47 # extensions are loaded with hgext_ prefix
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48 obj = __import__("hgext_%s" % modname)
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49 except ImportError:
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50 e2 = sys.exc_type, sys.exc_value, sys.exc_traceback
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51 if ui.tracebackflag:
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52 ui.warn(_('exception from first failed import '
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53 'attempt:\n'))
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54 ui.traceback(e1)
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55 if ui.tracebackflag:
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56 ui.warn(_('exception from second failed import '
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57 'attempt:\n'))
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58 ui.traceback(e2)
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59 raise util.Abort(_('%s hook is invalid '
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60 '(import of "%s" failed)') %
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61 (hname, modname))
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62 finally:
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63 if demandimportenabled:
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64 demandimport.enable()
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65 sys.path = oldpaths
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66 try:
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67 for p in funcname.split('.')[1:]:
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68 obj = getattr(obj, p)
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69 except AttributeError:
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70 raise util.Abort(_('%s hook is invalid '
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71 '("%s" is not defined)') %
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72 (hname, funcname))
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73 if not callable(obj):
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74 raise util.Abort(_('%s hook is invalid '
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75 '("%s" is not callable)') %
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76 (hname, funcname))
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77
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78 ui.note(_("calling hook %s: %s\n") % (hname, funcname))
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79 starttime = time.time()
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80
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81 try:
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82 try:
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83 # redirect IO descriptors to the ui descriptors so hooks
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84 # that write directly to these don't mess up the command
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85 # protocol when running through the command server
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86 old = sys.stdout, sys.stderr, sys.stdin
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87 sys.stdout, sys.stderr, sys.stdin = ui.fout, ui.ferr, ui.fin
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88
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89 r = obj(ui=ui, repo=repo, hooktype=name, **args)
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90 except KeyboardInterrupt:
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91 raise
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92 except Exception, exc:
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93 if isinstance(exc, util.Abort):
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94 ui.warn(_('error: %s hook failed: %s\n') %
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95 (hname, exc.args[0]))
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96 else:
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97 ui.warn(_('error: %s hook raised an exception: '
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98 '%s\n') % (hname, exc))
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99 if throw:
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100 raise
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101 ui.traceback()
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102 return True
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103 finally:
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104 sys.stdout, sys.stderr, sys.stdin = old
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105 duration = time.time() - starttime
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106 ui.log('pythonhook', 'pythonhook-%s: %s finished in %0.2f seconds\n',
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107 name, funcname, duration)
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108 if r:
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109 if throw:
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110 raise error.HookAbort(_('%s hook failed') % hname)
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111 ui.warn(_('warning: %s hook failed\n') % hname)
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112 return r
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113
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114 def _exthook(ui, repo, name, cmd, args, throw):
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115 ui.note(_("running hook %s: %s\n") % (name, cmd))
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116
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117 starttime = time.time()
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118 env = {}
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119 for k, v in args.iteritems():
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120 if callable(v):
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121 v = v()
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122 if isinstance(v, dict):
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123 # make the dictionary element order stable across Python
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124 # implementations
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125 v = ('{' +
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126 ', '.join('%r: %r' % i for i in sorted(v.iteritems())) +
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127 '}')
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128 env['HG_' + k.upper()] = v
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129
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130 if repo:
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131 cwd = repo.root
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132 else:
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Matt Mackall <mpm@selenic.com>
parents: 5833
diff changeset
133 cwd = os.getcwd()
11469
c37f35d7f2f5 http: deliver hook output to client
Maxim Khitrov <mkhitrov@gmail.com>
parents: 10263
diff changeset
134 if 'HG_URL' in env and env['HG_URL'].startswith('remote:http'):
c37f35d7f2f5 http: deliver hook output to client
Maxim Khitrov <mkhitrov@gmail.com>
parents: 10263
diff changeset
135 r = util.system(cmd, environ=env, cwd=cwd, out=ui)
c37f35d7f2f5 http: deliver hook output to client
Maxim Khitrov <mkhitrov@gmail.com>
parents: 10263
diff changeset
136 else:
14711
ac70f8d5987c hook: write hook output to ui fout descriptor
Idan Kamara <idankk86@gmail.com>
parents: 14234
diff changeset
137 r = util.system(cmd, environ=env, cwd=cwd, out=ui.fout)
18671
1c305128e5b9 blackbox: logs python and extension hooks via ui.log()
Durham Goode <durham@fb.com>
parents: 18111
diff changeset
138
1c305128e5b9 blackbox: logs python and extension hooks via ui.log()
Durham Goode <durham@fb.com>
parents: 18111
diff changeset
139 duration = time.time() - starttime
18691
4f485bd68f1d blackbox: do not translate the log messages
Durham Goode <durham@fb.com>
parents: 18671
diff changeset
140 ui.log('exthook', 'exthook-%s: %s finished in %0.2f seconds\n',
18671
1c305128e5b9 blackbox: logs python and extension hooks via ui.log()
Durham Goode <durham@fb.com>
parents: 18111
diff changeset
141 name, cmd, duration)
4622
fff50306e6dd hooks: separate hook code into a separate module
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
142 if r:
14234
600e64004eb5 rename explain_exit to explainexit
Adrian Buehlmann <adrian@cadifra.com>
parents: 13207
diff changeset
143 desc, r = util.explainexit(r)
4622
fff50306e6dd hooks: separate hook code into a separate module
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
144 if throw:
23415
cdbb85489c41 hook: raise a more specialized HookAbort exception when a hook fails
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 21797
diff changeset
145 raise error.HookAbort(_('%s hook %s') % (name, desc))
4622
fff50306e6dd hooks: separate hook code into a separate module
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
146 ui.warn(_('warning: %s hook %s\n') % (name, desc))
fff50306e6dd hooks: separate hook code into a separate module
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
147 return r
fff50306e6dd hooks: separate hook code into a separate module
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
148
15896
30c34fde40cc hooks: prioritize run order of hooks
Matt Zuba <matt.zuba@goodwillaz.org>
parents: 15512
diff changeset
149 def _allhooks(ui):
30c34fde40cc hooks: prioritize run order of hooks
Matt Zuba <matt.zuba@goodwillaz.org>
parents: 15512
diff changeset
150 hooks = []
30c34fde40cc hooks: prioritize run order of hooks
Matt Zuba <matt.zuba@goodwillaz.org>
parents: 15512
diff changeset
151 for name, cmd in ui.configitems('hooks'):
30c34fde40cc hooks: prioritize run order of hooks
Matt Zuba <matt.zuba@goodwillaz.org>
parents: 15512
diff changeset
152 if not name.startswith('priority'):
30c34fde40cc hooks: prioritize run order of hooks
Matt Zuba <matt.zuba@goodwillaz.org>
parents: 15512
diff changeset
153 priority = ui.configint('hooks', 'priority.%s' % name, 0)
30c34fde40cc hooks: prioritize run order of hooks
Matt Zuba <matt.zuba@goodwillaz.org>
parents: 15512
diff changeset
154 hooks.append((-priority, len(hooks), name, cmd))
30c34fde40cc hooks: prioritize run order of hooks
Matt Zuba <matt.zuba@goodwillaz.org>
parents: 15512
diff changeset
155 return [(k, v) for p, o, k, v in sorted(hooks)]
30c34fde40cc hooks: prioritize run order of hooks
Matt Zuba <matt.zuba@goodwillaz.org>
parents: 15512
diff changeset
156
5833
323b9c55b328 hook: redirect stdout to stderr for ssh and http servers
Matt Mackall <mpm@selenic.com>
parents: 4622
diff changeset
157 _redirect = False
323b9c55b328 hook: redirect stdout to stderr for ssh and http servers
Matt Mackall <mpm@selenic.com>
parents: 4622
diff changeset
158 def redirect(state):
6266
9f76df0edb7d hook.py: fix redirections introduced by 323b9c55b328
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 5869
diff changeset
159 global _redirect
5833
323b9c55b328 hook: redirect stdout to stderr for ssh and http servers
Matt Mackall <mpm@selenic.com>
parents: 4622
diff changeset
160 _redirect = state
323b9c55b328 hook: redirect stdout to stderr for ssh and http servers
Matt Mackall <mpm@selenic.com>
parents: 4622
diff changeset
161
4622
fff50306e6dd hooks: separate hook code into a separate module
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
162 def hook(ui, repo, name, throw=False, **args):
17048
15d4d475de9e ui: add a variable to control whether hooks should be called
Idan Kamara <idankk86@gmail.com>
parents: 15896
diff changeset
163 if not ui.callhooks:
15d4d475de9e ui: add a variable to control whether hooks should be called
Idan Kamara <idankk86@gmail.com>
parents: 15896
diff changeset
164 return False
15d4d475de9e ui: add a variable to control whether hooks should be called
Idan Kamara <idankk86@gmail.com>
parents: 15896
diff changeset
165
4622
fff50306e6dd hooks: separate hook code into a separate module
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
166 r = False
9658
852b1f3032d2 hook: only redirect stdout if it and stderr are valid files
Sune Foldager <cryo@cyanite.org>
parents: 9332
diff changeset
167 oldstdout = -1
5833
323b9c55b328 hook: redirect stdout to stderr for ssh and http servers
Matt Mackall <mpm@selenic.com>
parents: 4622
diff changeset
168
7416
196b05a548d0 hooks: restore io correctly on exception
Jesse Long <jesse@virtualpostman.co.za>
parents: 7280
diff changeset
169 try:
15896
30c34fde40cc hooks: prioritize run order of hooks
Matt Zuba <matt.zuba@goodwillaz.org>
parents: 15512
diff changeset
170 for hname, cmd in _allhooks(ui):
7416
196b05a548d0 hooks: restore io correctly on exception
Jesse Long <jesse@virtualpostman.co.za>
parents: 7280
diff changeset
171 if hname.split('.')[0] != name or not cmd:
196b05a548d0 hooks: restore io correctly on exception
Jesse Long <jesse@virtualpostman.co.za>
parents: 7280
diff changeset
172 continue
17963
6180dcb29ec5 hooks: delay I/O redirection until we actually run a hook (issue3711)
Matt Mackall <mpm@selenic.com>
parents: 17428
diff changeset
173
6180dcb29ec5 hooks: delay I/O redirection until we actually run a hook (issue3711)
Matt Mackall <mpm@selenic.com>
parents: 17428
diff changeset
174 if oldstdout == -1 and _redirect:
6180dcb29ec5 hooks: delay I/O redirection until we actually run a hook (issue3711)
Matt Mackall <mpm@selenic.com>
parents: 17428
diff changeset
175 try:
6180dcb29ec5 hooks: delay I/O redirection until we actually run a hook (issue3711)
Matt Mackall <mpm@selenic.com>
parents: 17428
diff changeset
176 stdoutno = sys.__stdout__.fileno()
6180dcb29ec5 hooks: delay I/O redirection until we actually run a hook (issue3711)
Matt Mackall <mpm@selenic.com>
parents: 17428
diff changeset
177 stderrno = sys.__stderr__.fileno()
6180dcb29ec5 hooks: delay I/O redirection until we actually run a hook (issue3711)
Matt Mackall <mpm@selenic.com>
parents: 17428
diff changeset
178 # temporarily redirect stdout to stderr, if possible
6180dcb29ec5 hooks: delay I/O redirection until we actually run a hook (issue3711)
Matt Mackall <mpm@selenic.com>
parents: 17428
diff changeset
179 if stdoutno >= 0 and stderrno >= 0:
6180dcb29ec5 hooks: delay I/O redirection until we actually run a hook (issue3711)
Matt Mackall <mpm@selenic.com>
parents: 17428
diff changeset
180 sys.__stdout__.flush()
6180dcb29ec5 hooks: delay I/O redirection until we actually run a hook (issue3711)
Matt Mackall <mpm@selenic.com>
parents: 17428
diff changeset
181 oldstdout = os.dup(stdoutno)
6180dcb29ec5 hooks: delay I/O redirection until we actually run a hook (issue3711)
Matt Mackall <mpm@selenic.com>
parents: 17428
diff changeset
182 os.dup2(stderrno, stdoutno)
17964
2c63896783e3 hooks: be even more forgiven of non-fd descriptors (issue3711)
Matt Mackall <mpm@selenic.com>
parents: 17963
diff changeset
183 except (OSError, AttributeError):
2c63896783e3 hooks: be even more forgiven of non-fd descriptors (issue3711)
Matt Mackall <mpm@selenic.com>
parents: 17963
diff changeset
184 # files seem to be bogus, give up on redirecting (WSGI, etc)
17963
6180dcb29ec5 hooks: delay I/O redirection until we actually run a hook (issue3711)
Matt Mackall <mpm@selenic.com>
parents: 17428
diff changeset
185 pass
6180dcb29ec5 hooks: delay I/O redirection until we actually run a hook (issue3711)
Matt Mackall <mpm@selenic.com>
parents: 17428
diff changeset
186
21797
b009dd135aa0 hook: restore use of callable() since it was readded in Python 3.2
Augie Fackler <raf@durin42.com>
parents: 20548
diff changeset
187 if callable(cmd):
7416
196b05a548d0 hooks: restore io correctly on exception
Jesse Long <jesse@virtualpostman.co.za>
parents: 7280
diff changeset
188 r = _pythonhook(ui, repo, name, hname, cmd, args, throw) or r
196b05a548d0 hooks: restore io correctly on exception
Jesse Long <jesse@virtualpostman.co.za>
parents: 7280
diff changeset
189 elif cmd.startswith('python:'):
9332
872d49dd577a hook: fix full path imports on Windows (issue1779)
Steve Borho <steve@borho.org>
parents: 8366
diff changeset
190 if cmd.count(':') >= 2:
872d49dd577a hook: fix full path imports on Windows (issue1779)
Steve Borho <steve@borho.org>
parents: 8366
diff changeset
191 path, cmd = cmd[7:].rsplit(':', 1)
13118
789e0fa2fcea hook: assume relative path to hook is given from repo root
Alexander Solovyov <alexander@solovyov.net>
parents: 11469
diff changeset
192 path = util.expandpath(path)
13119
ecf7d6e0eef0 hook: fix import path handling for repo=None
Matt Mackall <mpm@selenic.com>
parents: 13118
diff changeset
193 if repo:
ecf7d6e0eef0 hook: fix import path handling for repo=None
Matt Mackall <mpm@selenic.com>
parents: 13118
diff changeset
194 path = os.path.join(repo.root, path)
17217
1b2b727a885f hooks: print out more information when loading a python hook fails
Simon Heimberg <simohe@besonet.ch>
parents: 17048
diff changeset
195 try:
1b2b727a885f hooks: print out more information when loading a python hook fails
Simon Heimberg <simohe@besonet.ch>
parents: 17048
diff changeset
196 mod = extensions.loadpath(path, 'hghook.%s' % hname)
1b2b727a885f hooks: print out more information when loading a python hook fails
Simon Heimberg <simohe@besonet.ch>
parents: 17048
diff changeset
197 except Exception:
1b2b727a885f hooks: print out more information when loading a python hook fails
Simon Heimberg <simohe@besonet.ch>
parents: 17048
diff changeset
198 ui.write(_("loading %s hook failed:\n") % hname)
1b2b727a885f hooks: print out more information when loading a python hook fails
Simon Heimberg <simohe@besonet.ch>
parents: 17048
diff changeset
199 raise
7916
f779e1996e23 ability to load hooks from arbitrary python module
Alexander Solovyov <piranha@piranha.org.ua>
parents: 7787
diff changeset
200 hookfn = getattr(mod, cmd)
f779e1996e23 ability to load hooks from arbitrary python module
Alexander Solovyov <piranha@piranha.org.ua>
parents: 7787
diff changeset
201 else:
f779e1996e23 ability to load hooks from arbitrary python module
Alexander Solovyov <piranha@piranha.org.ua>
parents: 7787
diff changeset
202 hookfn = cmd[7:].strip()
f779e1996e23 ability to load hooks from arbitrary python module
Alexander Solovyov <piranha@piranha.org.ua>
parents: 7787
diff changeset
203 r = _pythonhook(ui, repo, name, hname, hookfn, args, throw) or r
7416
196b05a548d0 hooks: restore io correctly on exception
Jesse Long <jesse@virtualpostman.co.za>
parents: 7280
diff changeset
204 else:
196b05a548d0 hooks: restore io correctly on exception
Jesse Long <jesse@virtualpostman.co.za>
parents: 7280
diff changeset
205 r = _exthook(ui, repo, hname, cmd, args, throw) or r
196b05a548d0 hooks: restore io correctly on exception
Jesse Long <jesse@virtualpostman.co.za>
parents: 7280
diff changeset
206 finally:
9658
852b1f3032d2 hook: only redirect stdout if it and stderr are valid files
Sune Foldager <cryo@cyanite.org>
parents: 9332
diff changeset
207 if _redirect and oldstdout >= 0:
852b1f3032d2 hook: only redirect stdout if it and stderr are valid files
Sune Foldager <cryo@cyanite.org>
parents: 9332
diff changeset
208 os.dup2(oldstdout, stdoutno)
7416
196b05a548d0 hooks: restore io correctly on exception
Jesse Long <jesse@virtualpostman.co.za>
parents: 7280
diff changeset
209 os.close(oldstdout)
6266
9f76df0edb7d hook.py: fix redirections introduced by 323b9c55b328
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 5869
diff changeset
210
9f76df0edb7d hook.py: fix redirections introduced by 323b9c55b328
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 5869
diff changeset
211 return r