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-
-"""mpwsystem -
-A simple example of how to use Apple Events to implement a "system()"
-call that invokes ToolServer on the command.
-
-Contributed by Daniel Brotsky <dev@brotsky.com>.
-
-(renamed from aesystem to mpwsystem by Jack)
-
-system(cmd, infile = None, outfile = None, errfile = None)
-
-1. Every call to system sets "lastStatus" and "lastOutput" to the
-status and output
-produced by the command when executed in ToolServer. (lastParameters
-and lastAttributes
-are set to the values of the AppleEvent result.)
-
-2. system returns lastStatus unless the command result indicates a MacOS error,
-in which case os.Error is raised with the errnum as associated value.
-
-3. You can specify ToolServer-understandable pathnames for
-redirection of input,
-output, and error streams. By default, input is Dev:Null, output is captured
-and returned to the caller, diagnostics are captured and returned to
-the caller.
-(There's a 64K limit to how much can be captured and returned this way.)"""
-
-import os
-import aetools
-
-try: server
-except NameError: server = aetools.TalkTo("MPSX", 1)
-
-lastStatus = None
-lastOutput = None
-lastErrorOutput = None
-lastScript = None
-lastEvent = None
-lastReply = None
-lastParameters = None
-lastAttributes = None
-
-def system(cmd, infile = None, outfile = None, errfile = None):
- global lastStatus, lastOutput, lastErrorOutput
- global lastScript, lastEvent, lastReply, lastParameters, lastAttributes
- cmdline = cmd
- if infile: cmdline += " <" + infile
- if outfile: cmdline += " >" + outfile
- if errfile: cmdline += " " + str(chr(179)) + errfile
- lastScript = "set Exit 0\r" + cmdline + "\rexit {Status}"
- lastEvent = server.newevent("misc", "dosc", {"----" : lastScript})
- (lastReply, lastParameters, lastAttributes) = server.sendevent(lastEvent)
- if lastParameters.has_key('stat'): lastStatus = lastParameters['stat']
- else: lastStatus = None
- if lastParameters.has_key('----'): lastOutput = lastParameters['----']
- else: lastOutput = None
- if lastParameters.has_key('diag'): lastErrorOutput = lastParameters['diag']
- else: lastErrorOutput = None
- if lastParameters['errn'] != 0:
- raise os.Error, lastParameters['errn']
- return lastStatus
-
-if __name__ == '__main__':
- sts = system('alert "Hello World"')
- print 'system returned', sts
-
-