#!/bin/sh
#
# convert ps to the format required by the printer on this queue
#
# if the printer is a PostScript printer, just cat it through
# if the printer uses ghostscript, we'll run it now
# if the printer is neither, we die (with good message to someone)
#

# location of the ppaprint script 
FPIDIR=/usr/lib/rhs/rhs-printfilters/

#
# read in PostScript configuration settings
#

source ${SPOOLDIR}/postscript.cfg

#
# see if we should reverse order
#
# support will be added for this in the future
# psorder needed and is part of netatalk, which we dont currently ship
#

if [ "$PAPERSIZE" = "letter" ]; then
    mpage_paper="Letter"
elif [ "$PAPERSIZE" = "a4" ]; then
    mpage_paper="A4"
elif [ "$PAPERSIZE" = "legal" ]; then
    mpage_paper="Legal"
else 
    mpage_paper="Letter"
fi

#
# weird case - some PS doesnt get handled by mpage well
# so we allow nup=1 to just cat PS to printer w/o mpage interferring
#
if [ "$NUP" = "1" ]; then
    border="-o"
    mpage_cmd="cat -"
else
    border=""
    mpage_cmd="mpage -b$mpage_paper $border -$NUP -m${RTLFTMAR}lr -m${TOPBOTMAR}tb"
fi

#
# if the driver is 
#  "POSTSCRIPT"    it means the printer handles Postscript natively, 
#                  no need to run gs.
#  "TEXT"          it means the printer cannot handle PS input
#  "uniprint"      use the driver set by COLOR in postscript.cfg
#  "ppa"           use the driver and postprocessor returned by  ppaprint

if [ "$GSDEVICE" = "POSTSCRIPT" ]; then
   eval $mpage_cmd
elif [ "$GSDEVICE" = "TEXT" ]; then
   echo "Error - ps-to-printer.fpi - this printer cannot print postscript"
   echo "                            and ghostscript does not have support"
   exit 1
#
#  We're using ghostscript with "uniprint" command line style, 
#  $COLOR holds filename of driver parameters (filename.upp)
#  Since real driver name is stored in *.upp files, this style can 
#  activate traditional drivers provided you create corresponding 
#  *.upp files, entry to printdb, and compile ghostscript with uniprint.
#  ( Without compiling uniprint in ghostscript, this script will filter 
#    out all uniprint entries in printdb including fake ones for 
#    traditional drivers )
#
elif [ "$GSDEVICE" = "uniprint" ]; then
#  Set default *.upp driver (your default printer upp driver here)
   if [ "$COLOR" = "" ]; then 
      COLOR="stcany"
      echo "No filename for parameters given.  Assume $COLOR."
   fi
# 
   eval "$mpage_cmd | gs -q @$COLOR.upp \
      -sPAPERSIZE=$PAPERSIZE \
      -sOutputFile=- \
      $EXTRA_GS_OPTIONS \
      -"

# support for HP DeskJet PPA printers (710, 720, 820, 1000 series). 
# assemble the PPA postprocessor command line using the ppaprint script.
# GSDEVICE is selected from among the pnm devices.
# $EXTRA_GS_OPTIONS is processed to remove PPA options.
# PPA configuration is encoded in $COLOR

# (use the GSDEVICE=ppa test when Red Hat have modified printtool
# to recognise printerdb entries with GSDEVICE=ppa ....)
#elif [ "$GSDEVICE" = "ppa" ]; then
# (until then, test $COLOR instead ....)
elif echo $COLOR | grep -e "ppa" > /dev/null 2>&1 ; then
   PPA=$FPIDIR/ppaprint
   PPA_CMD=$(eval "$PPA $COLOR $PAPERSIZE $RESOLUTION $EXTRA_GS_OPTIONS ")
   if ! echo $PPA_CMD | grep -e "Error" > /dev/null 2>&1  ; then
	eval "$mpage_cmd | sed \"s/[(]%%.*%%[)].*flush//g\" | \
	gs -q  \
	-r$RESOLUTION \
	-sPAPERSIZE=$PAPERSIZE \
	-dNOPAUSE \
	-dSAFER \
	-sOutputFile=- \
	$PPA_CMD"   
    else
	echo "Error - ps-to-printer.fpi - PPA postprocessor error:" 
	echo $PPA_CMD 
	exit 1
    fi
else
#  We're using ghostscript in traditional manner

   eval "$mpage_cmd | sed \"s/[(]%%.*%%[)].*flush//g\" | \
      gs -q -sDEVICE=$GSDEVICE \
      -r$RESOLUTION \
      -sPAPERSIZE=$PAPERSIZE \
      -dNOPAUSE \
      -dSAFER \
      -sOutputFile=- \
      $COLOR \
      $EXTRA_GS_OPTIONS \
      -"

fi

#
#
#   see if we need to send a form feed to eject the page from printer
#
    if [ "$PS_SEND_EOF" = "YES" ]; then
      printf "\004"
    fi

exit 0