#!/bin/sh
# Part of latex2rtf by Wilfried Hennings (Oct 2007)
# usage: pdf2pnga pdf_input_file png_output_file density

if [ -z "$1" ] ; then
    echo "error: no input file specified"
    exit 1
fi

if [ -z "$2" ] ; then
    echo "error: no output file specified"
    exit 1
fi

if [ -z $3 ] ; then 
    dpi=300
else
    dpi=$3
fi

# Under DOS, Ghostscript isn't available at all.
# Under Windows, the executable is named gswin32c.exe
# The use of the _.at file is necessary because of the 
# restricted command line length under Windows.
# The way to do this was taken over from the batch files 
# in the Ghostscript distribution for Windows.

if which gswin32c.exe >NUL ; then
   echo -dNOPAUSE -dBATCH -dSAFER -sDEVICE#pngalpha -r$dpi >_.at
   gswin32c -q -sOutputFile#$2 @_.at $1
   rm -f _.at
elif [ -e /usr/bin/sips ] ; then 
#  If sips is available (which is the case in newer MacOSX systems), then use it.
   /usr/bin/sips -s format png -s dpiHeight $dpi -s dpiWidth $dpi --out $2 $1 
else
   gs -q -dNOPAUSE -dBATCH -dSAFER -sDEVICE=pngalpha -r$dpi -sOutputFile=$2 $1 
fi

