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# extensions.py - extension handling for mercurial
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#
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# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms
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# of the GNU General Public License, incorporated herein by reference.
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import imp, os
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import util, sys
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from i18n import _
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_extensions = {}
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commandtable = {}
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setuphooks = []
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def find(name):
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'''return module with given extension name'''
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try:
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return _extensions[name]
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except KeyError:
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for k, v in _extensions.iteritems():
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if k.endswith('.' + name) or k.endswith('/' + name):
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return v
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raise KeyError(name)
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def load(ui, name, path):
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if name in _extensions:
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return
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if path:
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# the module will be loaded in sys.modules
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# choose an unique name so that it doesn't
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# conflicts with other modules
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module_name = "hgext_%s" % name.replace('.', '_')
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if os.path.isdir(path):
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# module/__init__.py style
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d, f = os.path.split(path)
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fd, fpath, desc = imp.find_module(f, [d])
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mod = imp.load_module(module_name, fd, fpath, desc)
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else:
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mod = imp.load_source(module_name, path)
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else:
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def importh(name):
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mod = __import__(name)
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components = name.split('.')
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for comp in components[1:]:
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mod = getattr(mod, comp)
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return mod
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try:
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mod = importh("hgext.%s" % name)
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except ImportError:
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mod = importh(name)
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_extensions[name] = mod
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uisetup = getattr(mod, 'uisetup', None)
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if uisetup:
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uisetup(ui)
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reposetup = getattr(mod, 'reposetup', None)
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if reposetup:
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setuphooks.append(reposetup)
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cmdtable = getattr(mod, 'cmdtable', {})
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overrides = [cmd for cmd in cmdtable if cmd in commandtable]
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if overrides:
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ui.warn(_("extension '%s' overrides commands: %s\n")
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% (name, " ".join(overrides)))
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commandtable.update(cmdtable)
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def loadall(ui):
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result = ui.configitems("extensions")
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for i, (name, path) in enumerate(result):
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if path:
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path = os.path.expanduser(path)
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try:
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load(ui, name, path)
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except (util.SignalInterrupt, KeyboardInterrupt):
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raise
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except Exception, inst:
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ui.warn(_("*** failed to import extension %s: %s\n") %
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(name, inst))
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if ui.print_exc():
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return 1
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