#!/bin/bash

## Copyright (C) 2003-2006 Red Hat, Inc.

## Copyright (C) 2003-2006 Tim Waugh <twaugh@redhat.com>

## Changed on 2007/05/17, Opher Shachar, LADPC Ltd.

##     Added support for page-ranges option.

##     Added page accounting.

## This program is free software; you can redistribute it and/or modify

## it under the terms of the GNU General Public License as published by

## the Free Software Foundation; either version 2 of the License, or

## (at your option) any later version.

## This program is distributed in the hope that it will be useful,

## but WITHOUT ANY WARRANTY; without even the implied warranty of

## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

## GNU General Public License for more details.

## You should have received a copy of the GNU General Public License

## along with this program; if not, write to the Free Software

## Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

if [ $# == 0 ]; then

  echo >&2 "ERROR: $0 job-id user title copies options [file]"

  exit 1

fi

# Extract the papersize

SENDFF=`grep '^\*DefaultSendFF' "$PPD" | cut -d\  -f2`

COPIES=1

if [ $# -ge 4 ]; then

  COPIES="$4"

fi

if [ "$COPIES" -gt 1 ] && [ $# -lt 6 ]; then

  unset TMPFILE

  trap -- 'rm -f "$TMPFILE"' EXIT

  TMPFILE=$(mktemp ${TMPDIR:-/tmp}/textonly.XXXXXX)

  cat > "$TMPFILE"

else

  TMPFILE="$6"

fi

PR=${5#*page-ranges=}

# Do options specify page-ranges?

if [[ "$PR" != "$5" ]]; then

  PR=${PR%% *}

else

  #unset PR

  PR=1-999999

fi

if [[ "$PR" ]]; then

  TMPFILE2=$(mktemp ${TMPDIR:-/tmp}/textonly2.XXXXXX)

  pagenum=0

  EOF=

  { 

  while [[ "$PR" ]]; do

    pl=${PR%%,*}		;# take first subrange

    PR=${PR#$pl};PR=${PR#,}	;# remove from range list

    pu=${pl#*-}			;# extract upper and lower

    pl=${pl%-*}			;# pages of subrange

    # Allows interpreting 0-5,3-10 as 1-5,6-10 rejects 5-1 or 1-

    (( pagenum >= pl )) && pl=$(( pagenum + 1 ))

    (( pl > pu )) && continue

    # Loop reading pages until at or over lower page of subrange.

    while read -d `echo -ne '\f'` -r; do

      (( pagenum++ ))

      (( pagenum == pl )) && break

    done

    # Did we reach lower page of subrange or EOF?

    if (( pagenum < pl )); then

      [[ ! "$REPLY" ]] && break		;# empty last page - we're done.

      (( pagenum++ ))

      EOF=y

    fi

    # Output page and report to page log

    if (( pagenum == pl )); then

      echo -n "${REPLY}" >>"$TMPFILE2"

      # If EOF then page has no final FF

      [[ ! "$EOF" ]] && echo -ne '\f' >>"$TMPFILE2"

      echo "PAGE: $pagenum $COPIES" >&2

    fi

    [[ "$EOF" ]] && break

    # Is the current subrange a single page?

    (( pagenum == pu )) && continue

    while read -d `echo -ne '\f'` -r; do

      (( pagenum++ ))

      echo -ne "${REPLY}\f" >>"$TMPFILE2"

      echo "PAGE: $pagenum $COPIES" >&2

      (( pagenum == pu )) && break

    done

    # Could be that we reached EOF before page boundry

    if (( pagenum < pu )); then

      if [[ "$REPLY" ]]; then

        (( pagenum++ ))

        echo -n "${REPLY}" >>"$TMPFILE2"

        echo "PAGE: $pagenum $COPIES" >&2

      fi

      break

    fi

  done

  } <"$TMPFILE"

else

  TMPFILE2="$TMPFILE"

  pc=$(grep -co `echo -ne '\f'` "$TMPFILE2")

  pc=$(( pc * $COPIES ))

  echo "PAGE: $pc" >&2

fi

while [ "$COPIES" -gt 0 ]; do

  # Just translate LF->CRLF at the moment, until the PPD has options added.

  sed -e 's/$/'`echo -ne '\r'`'/g' "$TMPFILE2"

  if [ "$SENDFF" == "True" ]

    then

    echo -ne '\f'

  fi

  COPIES=$(($COPIES - 1))

done

# Cleanup

[[ "$TMPFILE" != "$TMPFILE2" ]] && rm -f "$TMPFILE2"

exit 0