Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!cs.utexas.edu!execu!sequoia!rpp386!woody
From: woody@rpp386.cactus.org (Woodrow Baker)
Newsgroups: comp.lang.postscript
Subject: Re: PostScript utility for font changes, subscripts within string
Summary: font changes
Message-ID: <17479@rpp386.cactus.org>
Date: 21 Dec 89 22:35:31 GMT
References: <12294@phoenix.Princeton.EDU> <7026@shlump.nac.dec.com>
Distribution: na
Organization: River Parishes Programming, Plano, TX
Lines: 21


The way to accomplish what you asked for (embedded control characters)
in your text string, is to parse the textstring line at a time, looking for
characters.  Don Lancaster has a thing he calls "gonzo justify" that does
exactly that.
Basically, you do a read of the currentfile, and convert the integer to
a string character.  The you test the string character to see if a procedure
by that name is known.  You can then load teh procedure and execute it, else
you image the character.  There was an emulator pshed by adobe at one time
that was a simple diablo emulator.  It worked this way.  Basically, you
had a dctionary called ESC  (defined by     the number 27.  The
dictionary then had procedures, each of which had an integer for the
name, and each  integer had an entry or procedure.  each procedure
in the  escape dictionary was named for a letter, i.e.  for say
<ESC> T   where t was say goto bold, you would have an entry
in the ESC dictionary with a name of  84  (the decimal code for T or so I
think), and a prcdr that did what was needed to go to bold.
Cheers
Woody
p.s. Sorry for the misspellings, I still haven't masterd VI, so I can't
go change them..