#!/bin/sh
# ps2web by David Dumas <daviddumas@gmail.com>

# Turn a postscript or pdf file into a bunch of single-page png files: 
# slide01.png, slide02.png, etc.

# REQUIRES IMAGEMAGICK
# see http://www.imagemagick.org/

if [ $# -lt 1 ]; then
	echo 1>&2 Usage: $0 DOCUMENT.ps [ghostscript options...] 
	exit 127
fi

# Create TIFF files first because this option seems to give the best 
# antialiased output.  (Using AFPL Ghostscript 8.14)
gs -dBATCH -dNOPAUSE -sDEVICE=tiff24nc -sOutputFile=slide%02d.tif -dGraphicsAlphaBits=4 -dTextAlphaBits=4 -dMaxBitmap=50000000 $*

for fn in slide??.tif; do
	newfn=`echo $fn | sed 's/\.tif/\.png/'`
	convert $fn $newfn
	if [[ -a $newfn ]]; then
		rm -f $fn
	fi
done

exit 0