#!/bin/sh
################################################################################
# WeBWorK Online Homework Delivery System
# Copyright © 2000-2003 The WeBWorK Project, http://openwebwork.sf.net/
# $CVSHeader$
# 
# This program is free software; you can redistribute it and/or modify it under
# the terms of either: (a) the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any later
# version, or (b) the "Artistic License" which comes with this package.
# 
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See either the GNU General Public License or the
# Artistic License for more details.
################################################################################

# This script wraps system-dependant calls to several netpbm utilities.
# In order to use this script, set the NETPBM variable below to the
# directory which contains giftopnm, ppmtopgm, and pnmtops.

NETPBM=/usr/local/bin

# If you wish to set the paths to each utility separately, i.e. if they
# are in different locations, do so below:

GIFTOPNM=$NETPBM/giftopnm;
PPMTOPGM=$NETPBM/ppmtopgm;
PNMTOPS=$NETPBM/pnmtops;

# There should be no need for customization beyond this point.

umask 022
cat $1 | $GIFTOPNM | $PPMTOPGM | $PNMTOPS -noturn 2>/dev/null > $2

# CODER NOTE:
# We used to use `pnmdepth 1' instead of ppmtopgm as it creates a
# monochrome image (1 bit) rather than a greyscale image (8 bits).
# However, this was causing improper display of some sort in PDFs.