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113 lines
3.8 KiB
Python
113 lines
3.8 KiB
Python
"""argvemulator - create sys.argv from OSA events. Used by applets that
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want unix-style arguments.
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"""
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import sys
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import traceback
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from Carbon import AE
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from Carbon.AppleEvents import *
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from Carbon import Evt
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from Carbon.Events import *
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import aetools
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class ArgvCollector:
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"""A minimal FrameWork.Application-like class"""
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def __init__(self):
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self.quitting = 0
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self.ae_handlers = {}
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# Remove the funny -psn_xxx_xxx argument
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if len(sys.argv) > 1 and sys.argv[1][:4] == '-psn':
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del sys.argv[1]
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self.installaehandler('aevt', 'oapp', self.open_app)
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self.installaehandler('aevt', 'odoc', self.open_file)
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def installaehandler(self, classe, type, callback):
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AE.AEInstallEventHandler(classe, type, self.callback_wrapper)
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self.ae_handlers[(classe, type)] = callback
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def close(self):
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for classe, type in self.ae_handlers.keys():
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AE.AERemoveEventHandler(classe, type)
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def mainloop(self, mask = highLevelEventMask, timeout = 1*60):
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stoptime = Evt.TickCount() + timeout
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while not self.quitting and Evt.TickCount() < stoptime:
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self.dooneevent(mask, timeout)
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self.close()
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def _quit(self):
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self.quitting = 1
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def dooneevent(self, mask = highLevelEventMask, timeout = 1*60):
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got, event = Evt.WaitNextEvent(mask, timeout)
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if got:
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self.lowlevelhandler(event)
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def lowlevelhandler(self, event):
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what, message, when, where, modifiers = event
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h, v = where
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if what == kHighLevelEvent:
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try:
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AE.AEProcessAppleEvent(event)
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except AE.Error, err:
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msg = "High Level Event: %r %r" % (hex(message), hex(h | (v<<16)))
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print 'AE error: ', err
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print 'in', msg
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traceback.print_exc()
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return
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else:
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print "Unhandled event:", event
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def callback_wrapper(self, _request, _reply):
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_parameters, _attributes = aetools.unpackevent(_request)
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_class = _attributes['evcl'].type
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_type = _attributes['evid'].type
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if self.ae_handlers.has_key((_class, _type)):
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_function = self.ae_handlers[(_class, _type)]
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elif self.ae_handlers.has_key((_class, '****')):
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_function = self.ae_handlers[(_class, '****')]
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elif self.ae_handlers.has_key(('****', '****')):
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_function = self.ae_handlers[('****', '****')]
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else:
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raise 'Cannot happen: AE callback without handler', (_class, _type)
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# XXXX Do key-to-name mapping here
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_parameters['_attributes'] = _attributes
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_parameters['_class'] = _class
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_parameters['_type'] = _type
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if _parameters.has_key('----'):
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_object = _parameters['----']
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del _parameters['----']
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# The try/except that used to be here can mask programmer errors.
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# Let the program crash, the programmer can always add a **args
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# to the formal parameter list.
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rv = _function(_object, **_parameters)
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else:
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#Same try/except comment as above
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rv = _function(**_parameters)
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if rv == None:
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aetools.packevent(_reply, {})
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else:
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aetools.packevent(_reply, {'----':rv})
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def open_app(self, **args):
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self._quit()
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def open_file(self, _object=None, **args):
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for alias in _object:
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fsr = alias.FSResolveAlias(None)[0]
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pathname = fsr.as_pathname()
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sys.argv.append(pathname)
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self._quit()
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def other(self, _object=None, _class=None, _type=None, **args):
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print 'Ignore AppleEvent', (_class, _type), 'for', _object, 'Other args:', args
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if __name__ == '__main__':
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ArgvCollector().mainloop()
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print "sys.argv=", sys.argv
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