Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/extensions.py @ 5049:41284ad94852
Merge with stable
author | Brendan Cully <brendan@kublai.com> |
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date | Wed, 01 Aug 2007 14:32:53 -0700 |
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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 if path: |
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34 # the module will be loaded in sys.modules |
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35 # choose an unique name so that it doesn't |
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36 # conflicts with other modules |
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37 module_name = "hgext_%s" % name.replace('.', '_') |
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38 if os.path.isdir(path): |
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39 # module/__init__.py style |
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40 d, f = os.path.split(path) |
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41 fd, fpath, desc = imp.find_module(f, [d]) |
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42 mod = imp.load_module(module_name, fd, fpath, desc) |
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43 else: |
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44 mod = imp.load_source(module_name, path) |
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45 else: |
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46 def importh(name): |
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47 mod = __import__(name) |
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48 components = name.split('.') |
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49 for comp in components[1:]: |
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50 mod = getattr(mod, comp) |
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51 return mod |
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52 try: |
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53 mod = importh("hgext.%s" % name) |
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54 except ImportError: |
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55 mod = importh(name) |
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56 _extensions[shortname] = mod |
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57 |
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58 uisetup = getattr(mod, 'uisetup', None) |
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59 if uisetup: |
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60 uisetup(ui) |
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61 reposetup = getattr(mod, 'reposetup', None) |
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62 if reposetup: |
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63 setuphooks.append(reposetup) |
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64 cmdtable = getattr(mod, 'cmdtable', {}) |
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65 overrides = [cmd for cmd in cmdtable if cmd in commandtable] |
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66 if overrides: |
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67 ui.warn(_("extension '%s' overrides commands: %s\n") |
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68 % (name, " ".join(overrides))) |
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69 commandtable.update(cmdtable) |
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70 |
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71 def loadall(ui): |
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72 result = ui.configitems("extensions") |
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73 for i, (name, path) in enumerate(result): |
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74 if path: |
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75 path = os.path.expanduser(path) |
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76 try: |
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77 load(ui, name, path) |
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78 except (util.SignalInterrupt, KeyboardInterrupt): |
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79 raise |
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80 except Exception, inst: |
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81 ui.warn(_("*** failed to import extension %s: %s\n") % |
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82 (name, inst)) |
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83 if ui.print_exc(): |
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84 return 1 |
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85 |