#!/bin/bash

if [ $# = 1 ]; then

    FILENAME=`basename $1 .ps`
else
    echo "Usage: pstopng.sh <ps-filename>"
    exit 0
fi

MEDIA=`cat $1|grep DocumentMedia|cut -f2 -d " "`

echo "Format media $MEDIA"

if [ $MEDIA = "A4" ]; then

    gs -g1652x2360 -r200x200 -dBATCH -dNOPAUSE -sPAPERSIZE=$MEDIA -sDEVICE=pnggray -sOutputFile=$FILENAME.png $FILENAME.ps

elif [ $MEDIA = "A3" ]; then

    gs -g2360x3304 -r200x200 -dBATCH -dNOPAUSE -sPAPERSIZE=$MEDIA -sDEVICE=pnggray -sOutputFile=$FILENAME.png $FILENAME.ps

elif [ $MEDIA = "A2" ]; then

    gs -g3304x4720 -r200x200 -dBATCH -dNOPAUSE -sPAPERSIZE=$MEDIA -sDEVICE=pnggray -sOutputFile=$FILENAME.png $FILENAME.ps

else

    echo "Wrong format media $MEDIA"

fi