Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/hook.py @ 5432:0d154bce2341

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osutil: Solaris build fix
author Bryan O'Sullivan <bos@serpentine.com>
date Tue, 09 Oct 2007 08:39:37 -0700
parents fff50306e6dd
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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
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6 # of the GNU General Public License, incorporated herein by reference.
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7
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8 from i18n import _
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9 import util
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10
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11 def _pythonhook(ui, repo, name, hname, funcname, args, throw):
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12 '''call python hook. hook is callable object, looked up as
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13 name in python module. if callable returns "true", hook
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14 fails, else passes. if hook raises exception, treated as
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15 hook failure. exception propagates if throw is "true".
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16
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17 reason for "true" meaning "hook failed" is so that
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18 unmodified commands (e.g. mercurial.commands.update) can
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19 be run as hooks without wrappers to convert return values.'''
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20
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21 ui.note(_("calling hook %s: %s\n") % (hname, funcname))
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22 obj = funcname
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23 if not callable(obj):
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24 d = funcname.rfind('.')
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25 if d == -1:
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26 raise util.Abort(_('%s hook is invalid ("%s" not in '
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27 'a module)') % (hname, funcname))
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28 modname = funcname[:d]
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29 try:
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30 obj = __import__(modname)
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31 except ImportError:
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32 try:
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33 # extensions are loaded with hgext_ prefix
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34 obj = __import__("hgext_%s" % modname)
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35 except ImportError:
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36 raise util.Abort(_('%s hook is invalid '
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37 '(import of "%s" failed)') %
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38 (hname, modname))
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39 try:
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40 for p in funcname.split('.')[1:]:
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41 obj = getattr(obj, p)
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42 except AttributeError, err:
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43 raise util.Abort(_('%s hook is invalid '
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44 '("%s" is not defined)') %
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45 (hname, funcname))
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46 if not callable(obj):
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47 raise util.Abort(_('%s hook is invalid '
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48 '("%s" is not callable)') %
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49 (hname, funcname))
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50 try:
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51 r = obj(ui=ui, repo=repo, hooktype=name, **args)
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52 except (KeyboardInterrupt, util.SignalInterrupt):
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53 raise
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54 except Exception, exc:
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55 if isinstance(exc, util.Abort):
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56 ui.warn(_('error: %s hook failed: %s\n') %
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57 (hname, exc.args[0]))
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58 else:
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59 ui.warn(_('error: %s hook raised an exception: '
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60 '%s\n') % (hname, exc))
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61 if throw:
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62 raise
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63 ui.print_exc()
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64 return True
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65 if r:
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66 if throw:
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67 raise util.Abort(_('%s hook failed') % hname)
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68 ui.warn(_('warning: %s hook failed\n') % hname)
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69 return r
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70
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71 def _exthook(ui, repo, name, cmd, args, throw):
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72 ui.note(_("running hook %s: %s\n") % (name, cmd))
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73 env = dict([('HG_' + k.upper(), v) for k, v in args.iteritems()])
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74 r = util.system(cmd, environ=env, cwd=repo.root)
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75 if r:
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76 desc, r = util.explain_exit(r)
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77 if throw:
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78 raise util.Abort(_('%s hook %s') % (name, desc))
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79 ui.warn(_('warning: %s hook %s\n') % (name, desc))
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80 return r
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81
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82 def hook(ui, repo, name, throw=False, **args):
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83 r = False
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84 hooks = [(hname, cmd) for hname, cmd in ui.configitems("hooks")
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85 if hname.split(".", 1)[0] == name and cmd]
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86 hooks.sort()
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87 for hname, cmd in hooks:
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88 if callable(cmd):
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89 r = _pythonhook(ui, repo, name, hname, cmd, args, throw) or r
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90 elif cmd.startswith('python:'):
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91 r = _pythonhook(ui, repo, name, hname, cmd[7:].strip(),
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92 args, throw) or r
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93 else:
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94 r = _exthook(ui, repo, hname, cmd, args, throw) or r
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95 return r
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96