#!/bin/ksh

# This script copies an 8.5x11 sheet of paper with the assumption that
# your printer has a 3mm border on the left/right and a 4mm border on
# the top/bottom.

TEMP_POSTSCRIPT=`tempfile -p copy- -s .ps`
DPI=150
PNMFILT="pnmnorm -bvalue 20  -wvalue 235"
# Letter-Safe or Letter-Full
PAPER=Letter-Safe
# pdf or lpr
MODE=lpr

function die {
	echo "$1" >&2
	exit 1
}

function print_usage {
        echo 'copier [-p paper] [-m mode] [-d dpi] [-h]'
        echo '  -p|--paper Letter-Safer,Letter-Full'
        echo '  -m|--mode  lpr,pdf'
        echo '  -d|--dpi   75-600'
        echo '  -h|--help'
        exit 0
}

TEMP=`getopt -o p:m:d:h --long paper:,mode:,dpi:,help -n copier -- "$@"`

if [ $? != 0 ] ; then die "getopt failure; terminating..." ; fi

eval set -- "$TEMP"

while true ; do
	case "$1" in
		-p|--paper) PAPER="$2" ; shift 2 ;;
		-m|--mode) MODE="$2" ; shift 2 ;;
		-d|--dpi) DPI="$2" ; shift 2 ;;
		-h|--help) print_usage ;;
		--) shift ; break ;;
		*) die "Unrecognized Argument" ;;
	esac
done

# Die if remaining arguments exist
for arg do die "Unrecognized argument: $arg" ; done

# Scan
if [ "$PAPER" = "Letter-Full" ]; then
	# Full 8.5x11
	scanimage -y 279.4 -x 215.9 --resolution $DPI | $PNMFILT | pnmtops -imagewidth 8.5 -imageheight 11 > $TEMP_POSTSCRIPT
elif [ "$PAPER" = "Letter-Safe" ]; then
	# Safer 8.264x10.685
	scanimage -y 271.4 -x 209.9 -l 3 -t 4 --resolution $DPI | $PNMFILT | pnmtops -imagewidth 8.264 -imageheight 10.685 > $TEMP_POSTSCRIPT
else
	die "Unsupported PAPER size"
fi

# Print or Convert
if [ "$MODE" = "lpr" ]; then
	lpr -PC522 $TEMP_POSTSCRIPT
elif [ "$MODE" = "pdf" ]; then
	OUTPUT=`tempfile -p copy- -s .pdf`
	ps2pdf14 $TEMP_POSTSCRIPT $OUTPUT
	echo $OUTPUT
else
	die "Unsupported MODE"
fi

rm $TEMP_POSTSCRIPT