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From: jacks@pogo.TEK.COM (Jack Slingerland)
Newsgroups: comp.sys.mac
Subject: stdin in MPW Pascal
Message-ID: <3511@pogo.TEK.COM>
Date: Mon, 29-Jun-87 12:35:37 EDT
Article-I.D.: pogo.3511
Posted: Mon Jun 29 12:35:37 1987
Date-Received: Wed, 1-Jul-87 04:27:39 EDT
Distribution: na
Organization: Tektronix Inc., Beaverton, Or.
Lines: 20
Keywords: standard input MPW tool


MPW tools are supposed to take input from files specified on the
command line, with 'standard input' being the default if no files
are specified.  In C it is easy to implement this behavior by
assigning the appropriate file pointer to a generic input stream.

I have been unable to find a comparable method in MPW Pascal.  It
won't allow things like "InFile := Input;" -- it generates a "you
can't assign files" type of message.  The problem seems to be that
Pascal doesn't really have an analog to the C file pointer -- a
variable that "represents" a file, but isn't one.

In any case, any suggestions for how to use Pascal to implement the
desired input behavior for an MPW tool?

-----------------------------------------------------------------

		Jack Slingerland	(503) 685-3985
			jacks@tigger.GPID.TEK.COM
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