PPM Stuff 
Convert portable pixmap to X11 Pixmap format (version 3) and vice versa
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The program ppmtoxpm is a modified version of one sent out by Mark Snitily
(mark@zok.uucp) and upgraded to XPM version 2 by Paul Breslaw
(paul@mecazh.uu.ch).

It converts Jeff Poskanzer's (jef@well.sf.ca.us) portable pixmap format
(PBMPlus) into the new X11 pixmap format: XPM version 3 distributed by Arnaud
Le Hors (lehors@mirsa.inria.fr).

It is built using the PBMPlus libraries in the same way as any of the
ppm utilities in the PBMPlus package.

Paul Breslaw - Thu Nov 22 09:55:31 MET 1990
--
Paul Breslaw, Mecasoft SA,          |  telephone :  41 1 362 2040
Guggachstrasse 10, CH-8057 Zurich,  |  e-mail    :  paul@mecazh.uu.ch
Switzerland.                        |               mcsun!chx400!mecazh!paul
--

The program xpmtoppm is a modified version of the one distributed in the
PBMPlus package by Jeff Poskanzer's which converts XPM version 1 or 3 files
into a portable pixmap format.

Upgraded to XPM version 3 by
  Arnaud LE HORS     BULL Research France -- Koala Project
  lehors@sa.inria.fr  Phone:(33) 93 65 77 71  Fax:(33) 93 65 77 66
  Inria Sophia Antipolis B.P.109 06561 Valbonne Cedex France


Installation
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You should copy The ppmtoxpm.c, ppmtoxpm.1 and xpmtoppm.c, xpmtoppm.1 into
your .../pbmplus/ppm directory.


Patches
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* Rainer Sinkwitz sinkwitz@ifi.unizh.ch - 21 Nov 91:

xpmtoppm.c:
  - Bug fix, no advance of read ptr, would not read 
    colors like "ac c black" because it would find 
    the "c" of "ac" and then had problems with "c"
    as color.
    
  - Now understands multword X11 color names
  
  - Now reads multiple color keys. Takes the color
    of the highest available key. Lines no longer need
    to begin with key 'c'.
    
  - expanded line buffer to from 500 to 2048 for bigger files
    
ppmtoxpm.c:
  - Bug fix, should should malloc space for rgbn[j].name+1 in line 441
    caused segmentation faults
    
  - lowercase conversion of RGB names def'ed out,
    considered harmful.
    
Suggestions:
  ppmtoxpm should read /usr/lib/X11/rgb.txt by default.
  With the Imakefiles of pbmplus it even gets compiled 
  with -DRGB_DB=\"/usr/lib/X11/rgb.txt\"