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"""argvemulator - create sys.argv from OSA events. Used by applets that
want unix-style arguments.
"""
import sys
import traceback
from Carbon import AE
from Carbon.AppleEvents import *
from Carbon import Evt
from Carbon import File
from Carbon.Events import *
import aetools
class ArgvCollector:
"""A minimal FrameWork.Application-like class"""
def __init__(self):
self.quitting = 0
# Remove the funny -psn_xxx_xxx argument
if len(sys.argv) > 1 and sys.argv[1][:4] == '-psn':
del sys.argv[1]
AE.AEInstallEventHandler(kCoreEventClass, kAEOpenApplication, self.__runapp)
AE.AEInstallEventHandler(kCoreEventClass, kAEOpenDocuments, self.__openfiles)
def close(self):
AE.AERemoveEventHandler(kCoreEventClass, kAEOpenApplication)
AE.AERemoveEventHandler(kCoreEventClass, kAEOpenDocuments)
def mainloop(self, mask = highLevelEventMask, timeout = 1*60):
# Note: this is not the right way to run an event loop in OSX or even
# "recent" versions of MacOS9. This is however code that has proven
# itself.
stoptime = Evt.TickCount() + timeout
while not self.quitting and Evt.TickCount() < stoptime:
self._dooneevent(mask, timeout)
if not self.quitting:
print "argvemulator: timeout waiting for arguments"
self.close()
def _dooneevent(self, mask = highLevelEventMask, timeout = 1*60):
got, event = Evt.WaitNextEvent(mask, timeout)
if got:
self._lowlevelhandler(event)
def _lowlevelhandler(self, event):
what, message, when, where, modifiers = event
h, v = where
if what == kHighLevelEvent:
try:
AE.AEProcessAppleEvent(event)
except AE.Error, err:
msg = "High Level Event: %r %r" % (hex(message), hex(h | (v<<16)))
print 'AE error: ', err
print 'in', msg
traceback.print_exc()
return
else:
print "Unhandled event:", event
def _quit(self):
self.quitting = 1
def __runapp(self, requestevent, replyevent):
self._quit()
def __openfiles(self, requestevent, replyevent):
try:
listdesc = requestevent.AEGetParamDesc(keyDirectObject, typeAEList)
for i in range(listdesc.AECountItems()):
aliasdesc = listdesc.AEGetNthDesc(i+1, typeAlias)[1]
alias = File.Alias(rawdata=aliasdesc.data)
fsref = alias.FSResolveAlias(None)[0]
pathname = fsref.as_pathname()
sys.argv.append(pathname)
except Exception, e:
print "argvemulator.py warning: can't unpack an open document event"
import traceback
traceback.print_exc()
self._quit()
if __name__ == '__main__':
ArgvCollector().mainloop()
print "sys.argv=", sys.argv
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