#!/bin/bash
#
# Syntax:  eps2jpg [-h] [-d density] eps_file [...]
#
# Purpose: Uses convert to transform an eps or ps file into a jpg file.
#          If the file eps_file does not exist, first the extension .eps
#          is tried, and next the extension .ps.
#          With the -d flag you can specify the density; the default value is 
#          300.
#          The -h flag shows the help info for this command.
#
# See also: convert, gimp, eps2png
#
# Note: Does not seem to produce proper output for eps files generated
#       by matlab (it is suggested to direct create jpg output from within
#       matlab in that case, or to create output in another format, e.g., png).

# Created: May 22, 2006       by Bart De Schutter
# Last revised: Sep  3, 2007  by Bart De Schutter
#
# See http://www.deschutter.info/util/scripts.html for the latest version of
# this script.

# Status: public
# Category: postscript

density=300
while getopts :hd: option
do
   case "$option" in
      h) sed '/^$/q;/^#!/d;s/^# //;s/^#//' $0 >&2
         exit 1
         ;;
      d) density=${OPTARG}
         ;;
      :) echo >&2
         echo >&2 "Option -$OPTARG requires an argument."
         echo >&2
         sed '/^$/q;/^#!/d;s/^# //;s/^#//' $0 >&2
         echo >&2
         exit 1
         ;;
     \?) echo >&2
         echo >&2 "Unknown option: $OPTARG"
         echo >&2
         sed '/^$/q;/^#!/d;s/^# //;s/^#//' $0 >&2
         exit 1
         ;;
   esac
done
shift $(($OPTIND-1))

if [ $# -eq 0 ];
then
   echo >&2
   echo >&2 "ERROR: ${0##*/} requires at least 1 input argument."
   echo >&2
   sed '/^$/q;/^#!/d;s/^# //;s/^#//' $0 >&2
   exit 1
fi

# Enable extended pattern matching operators
shopt -q -s extglob

for fil in "$@"
do
   convert_fil=1
   if [ -f "$fil" ]
   then
      basename="${fil%.?(e)ps}"
      eps_fil="$fil"
   else
      basename="$fil"
      if [ -f "$basename.eps" ]
      then
         eps_fil="$basename.eps"
      else
         if [ -f "$basename.ps" ]
         then
            eps_fil="$basename.ps"
         else
            echo >&2 "WARNING: file $fil or $fil.(e)ps not found."
            convert_fil=0
         fi
      fi
  fi
  if [ "$convert_fil" == 1 ]
  then
     echo "Converting $eps_fil to jpg file"
     convert -antialias -density $density "$eps_fil" "$basename.jpg"
  fi
done