Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!decwrl!shelby!polya!rokicki
From: rokicki@polya.Stanford.EDU (Tomas G. Rokicki)
Newsgroups: comp.sys.amiga.tech
Subject: Re: DeluxePaint III and IFF
Keywords: IFF DPIII
Message-ID: <10115@polya.Stanford.EDU>
Date: 20 Jun 89 06:21:50 GMT
References: <1419@dover.sps.mot.com> <110824@sun.Eng.Sun.COM> <111101@sun.Eng.Sun.COM>
Sender: Tomas G. Rokicki <rokicki@polya.Stanford.EDU>
Distribution: na
Organization: Stanford University
Lines: 23

> >> EA decided in it's infinite wisdom, and to my chargin, to allow
> >> chunks of odd sizes. This screwed up my primitive IFF parsing so that

> >No!  Someone tell me this isn't true.  First, someone verify that

Here's the scoop on IFF.  RKM, Includes and AutoDocs, the brand-new one,
page 1-2, says:

   Each chunk is:
         char typeID[4] ;
         unsigned long datasize ;
         char data[] ;

   and
      - Every odd-length chunk must be followed by a 0 pad byte.  This
pad byte is not counted in datasize.

So odd-length chunks are allowed, providing they are padded out to an
even length.  Now, anybody want to look at a Dpaint III file and tell
me what they do?  If I could get one that fails on most readers, I'd
really love to take a look at it . . .

-tom