#!/bin/bash
#
# Syntax:  ps4up [-p] [-h] psfile [...]
#
# Purpose: Creates a Postscript file from psfile in which 4 A4 pages are
#          scaled and put on 1 A4 page in portrait mode.
#          The name of the output file is the same as psfile but
#          with the extension .ps replaced by .4up.ps .
#          If the -p option is specified, the resulting Postscript file is
#          directly sent to the printer and not written to disk.
#          The -h flag shows the help info for this command.
#
# See also: mpage, mk_4up

# Created: Jan  8, 1998       by Bart De Schutter
# Last revised: Jan 19, 2004  by Bart De Schutter
#
# See http://www.deschutter.info/util/scripts.html for the latest version of
# this script.

# Status: public
# Category: postscript

if [ -z "$(type -p psnup)" ];
then
   echo >&2
   echo >&2 "ERROR: the command psnup is not installed on this system."
   echo >&2
   exit 1
fi

print_file=0
while getopts :hp option
do
   case "$option" in
      p) print_file=1;;
      h) sed '/^$/q;/^#!/d;s/^# //;s/^#//' $0 >&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

for fil in "$@"
do
   inputfile=${fil%.ps}
   ps_in=${inputfile}.ps
   ps_out=${inputfile}.4up.ps

   if [ $print_file -eq 1 ];
   then
      psnup -pA4 -4 "$ps_in" | lp
   else
      echo
      echo "Processing $ps_in -> $ps_out"
      psnup -pA4 -4 "$ps_in" "$ps_out"
   fi
done