Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/extensions.py @ 4969:b43db44cd047

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hgk: enable mouse wheel under Windows. For some reason, MouseWheel events are not routed under windows even in latest ActiveTcl 8.4.15 while they are under linux and macosx. These events are activated using code supplied with Tcl Tip 171: <http://www.tcl.tk/cgi-bin/tct/tip/171.html>. Strangely, the Tip code almost work but generates some unexpected infinite loop which is fixed using a simple boolean to check reentrancy.
author Patrick Mezard <pmezard@gmail.com>
date Sun, 22 Jul 2007 16:21:49 +0200
parents 616a5adbf402
children af0995261f02
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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 in _extensions:
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28 return
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29 if path:
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30 # the module will be loaded in sys.modules
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31 # choose an unique name so that it doesn't
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32 # conflicts with other modules
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33 module_name = "hgext_%s" % name.replace('.', '_')
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34 if os.path.isdir(path):
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35 # module/__init__.py style
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36 d, f = os.path.split(path)
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37 fd, fpath, desc = imp.find_module(f, [d])
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38 mod = imp.load_module(module_name, fd, fpath, desc)
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39 else:
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40 mod = imp.load_source(module_name, path)
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41 else:
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42 def importh(name):
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43 mod = __import__(name)
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44 components = name.split('.')
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45 for comp in components[1:]:
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46 mod = getattr(mod, comp)
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47 return mod
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48 try:
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49 mod = importh("hgext.%s" % name)
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50 except ImportError:
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51 mod = importh(name)
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52 _extensions[name] = mod
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53
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54 uisetup = getattr(mod, 'uisetup', None)
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55 if uisetup:
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56 uisetup(ui)
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57 reposetup = getattr(mod, 'reposetup', None)
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58 if reposetup:
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59 setuphooks.append(reposetup)
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60 cmdtable = getattr(mod, 'cmdtable', {})
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61 overrides = [cmd for cmd in cmdtable if cmd in commandtable]
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62 if overrides:
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63 ui.warn(_("extension '%s' overrides commands: %s\n")
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64 % (name, " ".join(overrides)))
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65 commandtable.update(cmdtable)
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66
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67 def loadall(ui):
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68 result = ui.configitems("extensions")
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69 for i, (name, path) in enumerate(result):
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70 if path:
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71 path = os.path.expanduser(path)
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72 try:
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73 load(ui, name, path)
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74 except (util.SignalInterrupt, KeyboardInterrupt):
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75 raise
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76 except Exception, inst:
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77 ui.warn(_("*** failed to import extension %s: %s\n") %
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78 (name, inst))
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79 if ui.print_exc():
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80 return 1
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81