Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/extensions.py @ 5131:3edd6fedc33a

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Merge with crew-stable
author Brendan Cully <brendan@kublai.com>
date Thu, 09 Aug 2007 11:37:47 -0700
parents af0995261f02 b3cc62268a91
children 4f648e95caca
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1 # extensions.py - extension handling 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
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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 import imp, os
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9 import util, sys
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10 from i18n import _
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11
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12 _extensions = {}
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13 commandtable = {}
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14 setuphooks = []
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15
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16 def find(name):
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17 '''return module with given extension name'''
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18 try:
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19 return _extensions[name]
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20 except KeyError:
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21 for k, v in _extensions.iteritems():
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22 if k.endswith('.' + name) or k.endswith('/' + name):
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23 return v
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24 raise KeyError(name)
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25
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26 def load(ui, name, path):
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27 if name.startswith('hgext.'):
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28 shortname = name[6:]
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29 else:
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30 shortname = name
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31 if shortname in _extensions:
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32 return
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33 _extensions[shortname] = None
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34 if path:
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35 # the module will be loaded in sys.modules
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36 # choose an unique name so that it doesn't
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37 # conflicts with other modules
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38 module_name = "hgext_%s" % name.replace('.', '_')
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39 if os.path.isdir(path):
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40 # module/__init__.py style
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41 d, f = os.path.split(path)
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42 fd, fpath, desc = imp.find_module(f, [d])
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43 mod = imp.load_module(module_name, fd, fpath, desc)
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44 else:
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45 mod = imp.load_source(module_name, path)
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46 else:
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47 def importh(name):
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48 mod = __import__(name)
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49 components = name.split('.')
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50 for comp in components[1:]:
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51 mod = getattr(mod, comp)
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52 return mod
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53 try:
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54 mod = importh("hgext.%s" % name)
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55 except ImportError:
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56 mod = importh(name)
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57 _extensions[shortname] = mod
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58
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59 uisetup = getattr(mod, 'uisetup', None)
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60 if uisetup:
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61 uisetup(ui)
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62 reposetup = getattr(mod, 'reposetup', None)
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63 if reposetup:
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64 setuphooks.append(reposetup)
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65 cmdtable = getattr(mod, 'cmdtable', {})
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66 overrides = [cmd for cmd in cmdtable if cmd in commandtable]
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67 if overrides:
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68 ui.warn(_("extension '%s' overrides commands: %s\n")
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69 % (name, " ".join(overrides)))
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70 commandtable.update(cmdtable)
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71
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72 def loadall(ui):
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73 result = ui.configitems("extensions")
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74 for i, (name, path) in enumerate(result):
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75 if path:
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76 path = os.path.expanduser(path)
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77 try:
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78 load(ui, name, path)
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79 except (util.SignalInterrupt, KeyboardInterrupt):
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80 raise
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81 except Exception, inst:
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82 ui.warn(_("*** failed to import extension %s: %s\n") %
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83 (name, inst))
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84 if ui.print_exc():
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85 return 1
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86