| 1 | """argvemulator - create sys.argv from OSA events. Used by applets that
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| 2 | want unix-style arguments.
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| 3 | """
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| 4 |
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| 5 | import sys
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| 6 | import traceback
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| 7 | from Carbon import AE
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| 8 | from Carbon.AppleEvents import *
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| 9 | from Carbon import Evt
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| 10 | from Carbon import File
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| 11 | from Carbon.Events import *
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| 12 | import aetools
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| 13 |
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| 14 | class ArgvCollector:
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| 15 |
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| 16 | """A minimal FrameWork.Application-like class"""
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| 17 |
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| 18 | def __init__(self):
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| 19 | self.quitting = 0
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| 20 | # Remove the funny -psn_xxx_xxx argument
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| 21 | if len(sys.argv) > 1 and sys.argv[1][:4] == '-psn':
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| 22 | del sys.argv[1]
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| 23 |
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| 24 | AE.AEInstallEventHandler(kCoreEventClass, kAEOpenApplication, self.__runapp)
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| 25 | AE.AEInstallEventHandler(kCoreEventClass, kAEOpenDocuments, self.__openfiles)
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| 26 |
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| 27 | def close(self):
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| 28 | AE.AERemoveEventHandler(kCoreEventClass, kAEOpenApplication)
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| 29 | AE.AERemoveEventHandler(kCoreEventClass, kAEOpenDocuments)
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| 30 |
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| 31 | def mainloop(self, mask = highLevelEventMask, timeout = 1*60):
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| 32 | # Note: this is not the right way to run an event loop in OSX or even
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| 33 | # "recent" versions of MacOS9. This is however code that has proven
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| 34 | # itself.
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| 35 | stoptime = Evt.TickCount() + timeout
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| 36 | while not self.quitting and Evt.TickCount() < stoptime:
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| 37 | self._dooneevent(mask, timeout)
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| 38 |
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| 39 | if not self.quitting:
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| 40 | print "argvemulator: timeout waiting for arguments"
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| 41 |
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| 42 | self.close()
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| 43 |
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| 44 | def _dooneevent(self, mask = highLevelEventMask, timeout = 1*60):
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| 45 | got, event = Evt.WaitNextEvent(mask, timeout)
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| 46 | if got:
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| 47 | self._lowlevelhandler(event)
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| 48 |
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| 49 | def _lowlevelhandler(self, event):
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| 50 | what, message, when, where, modifiers = event
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| 51 | h, v = where
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| 52 | if what == kHighLevelEvent:
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| 53 | try:
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| 54 | AE.AEProcessAppleEvent(event)
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| 55 | except AE.Error, err:
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| 56 | msg = "High Level Event: %r %r" % (hex(message), hex(h | (v<<16)))
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| 57 | print 'AE error: ', err
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| 58 | print 'in', msg
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| 59 | traceback.print_exc()
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| 60 | return
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| 61 | else:
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| 62 | print "Unhandled event:", event
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| 63 |
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| 64 |
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| 65 | def _quit(self):
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| 66 | self.quitting = 1
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| 67 |
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| 68 | def __runapp(self, requestevent, replyevent):
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| 69 | self._quit()
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| 70 |
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| 71 | def __openfiles(self, requestevent, replyevent):
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| 72 | try:
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| 73 | listdesc = requestevent.AEGetParamDesc(keyDirectObject, typeAEList)
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| 74 | for i in range(listdesc.AECountItems()):
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| 75 | aliasdesc = listdesc.AEGetNthDesc(i+1, typeAlias)[1]
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| 76 | alias = File.Alias(rawdata=aliasdesc.data)
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| 77 | fsref = alias.FSResolveAlias(None)[0]
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| 78 | pathname = fsref.as_pathname()
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| 79 | sys.argv.append(pathname)
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| 80 | except Exception, e:
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| 81 | print "argvemulator.py warning: can't unpack an open document event"
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| 82 | import traceback
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| 83 | traceback.print_exc()
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| 84 |
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| 85 | self._quit()
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| 86 |
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| 87 | if __name__ == '__main__':
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| 88 | ArgvCollector().mainloop()
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| 89 | print "sys.argv=", sys.argv
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