#!/bin/sh

#* Copyright (C) 2005  Rick Richardson
#*
#* 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.
#*
#* Authors: Rick Richardson <rickr@mn.rr.com>

VERSION='$Id: foo2hp2600-wrapper.in,v 1.37 2006/06/25 13:42:23 rick Exp $'

#
# Printer Notes:
#
# hp2600 -
#

PROGNAME="$0"
BASENAME=`basename $PROGNAME`
PREFIX=/usr
SHARE=$PREFIX/share/foo2hp

#
#	Log the command line, for debugging and problem reports
#
if [ -x /usr/bin/logger ]; then
    logger -t "$BASENAME" -p lpr.info -- "foo2hp2600-wrapper $@" </dev/null
fi

usage() {
	cat <<EOF
Usage:
	$BASENAME [options] [ps-file]

	Foomatic printer wrapper for the foo2hp2600 printer driver.
	This script reads a Postscript ps-file or standard input
	and converts it to Zenographics ZjStream printer format.

Normal Options:
-b bits           Bits per plane (1 or 2) [$BPP]
-c                Print in color (else monochrome)
-d duplex         Duplex code to send to printer [$DUPLEX]
                    1=off, 2=longedge, 3=shortedge
-m media          Media code to send to printer [$MEDIA]
                    1=standard, 2=transparency, 3=glossy, 257=envelope,
                    259=letterhead, 261=thickstock, 262=postcard, 263=labels
-p paper          Paper code [$PAPER]
                    1=letter, 5=legal, 7=executive, 9=A4, 11=A5, 13=B5
                    20=env#10, 27=envDL 28=envC5 34=envB5 37=envMonarch
-n copies         Number of copies [$COPIES]
-r <xres>x<yres>  Set device resolution in pixels/inch [$RES]
-s source         Source code to send to printer [$SOURCE]
                    1=upper, 2=lower, 4=manual, 7=auto
		    Code numbers may vary with printer model.
-t                Draft mode.  Every other pixel is white.
-2 / -4           2-up, 4-up
-o orient         For N-up: -op is portrait, -ol is landscape, -os is seascape.

Printer Tweaking Options:
-u <xoff>x<yoff>  Set offset of upper left printable in pixels [varies]
-l <xoff>x<yoff>  Set offset of lower right printable in pixels [varies]
-L mask           Send logical clipping values from -u/-l in ZjStream [3]
                  0=no, 1=Y, 2=X, 3=XY
-P                Do not output START_PLANE codes.  May be needed by some
                  monochrome-only printers.
-X padlen         Add extra zero padding to the end of BID segments [16]

Color Tweaking Options:
-g gsopts         Additional options to pass to Ghostscript, such as
                  -dDITHERPPI=nnn, etc.  May appear more than once. []
-G profile.icm    Convert profile.icm to a Postscript CRD using icc2ps and
                  adjust colors using the setcolorrendering PS operator.
                  $SHARE/icm/ will be searched for profile.icm.
-I intent         Select profile intent from ICM file [$INTENT]
                  0=Perceptual, 1=Colorimetric, 2=Saturation, 3=Absolute
-G gamma-file.ps  Prepend gamma-file to the Postscript input to perform
                  color correction using the setcolortransfer PS operator.

Debugging Options:
-S plane          Output just a single color plane from a color print [all]
                  1=Cyan, 2=Magenta, 3=Yellow, 4=Black
-D lvl            Set Debug level [$DEBUG]
-V                $VERSION
EOF

	exit 1
}

#
#       Report an error and exit
#
error() {
	echo "$BASENAME: $1" >&2
	exit 1
}

dbgcmd() {
	if [ $DEBUG -ge 1 ]; then
	    echo "$@" >&2
	fi
	"$@"
}

#
# Portable version of 'which'
#
pathfind() {
    if [ "$1" = -p ]; then
	optp=1
	shift
    else
	optp=0
    fi
    OLDIFS="$IFS"
    IFS=:
    for p in $PATH; do
	if [ -x "$p/$*" ]; then
	    if [ $optp = 1 ]; then
		echo "$p/$*"
	    fi
	    IFS="$OLDIFS"
	    return 0
	fi
    done
    IFS="$OLDIFS"
    return 1
}

#
# Returns true if $1 is 32-bit binary
#
is32() {
    if pathfind file; then
	path=`pathfind -p "$*"`
	is32=`file -L "$path" | grep 32-bit` 
	if [ "$is32" = "" ]; then
	    return 1
	else
	    return 0
	fi
    else
	return 1
    fi
}

#
#	N-up-ify the job.  Requires psnup from psutils package
#
nup2() {
	tr '\r' '\n' | psnup $NUP_ORIENT -d2 -2 -m.3in -p$paper -q
}

nup4() {
	tr '\r' '\n' | psnup $NUP_ORIENT -d2 -4 -m.5in -p$paper -q
}

#
#       Process the options
#

# Try to use a local copy of GhostScript 8.54, if available.  Otherwise,
# fallback to whatever the Linux distro has installed (usually 7.07)
#
# N.B. := operator used here, when :- would be better, because "ash"
# doesn't have :-
if gs8 -v >/dev/null 2>&1; then
        GSBIN=${GSBIN:-gs8}
else
        GSBIN=${GSBIN:-gs}
fi

CMDLINE="$*"
DEBUG=0
DUPLEX=1
BPP=1
COLOR=
COLORMODE=default
QUALITY=1
QUALITY=wts

MEDIA=1
COPIES=1
PAPER=1
RES=600x600
SOURCE=7
NUP=
CLIP_UL=
CLIP_LR=
CLIP_LOG=
BC=
AIB=
NOPLANES=
COLOR2MONO=
GAMMAFILE=default
INTENT=0
GSOPTS=
EXTRAPAD=
SAVETONER=
NUP_ORIENT=
GSDEV=-sDEVICE=pbmraw
DefaultRGB=sRGB
# What mode to use if the user wants us to pick the "best" mode
case `$GSBIN --version` in
7*)
	DEFAULTCOLORMODE=10
	;;
8.1*)
	# Buggy 8.14/8.15 in Ubuntu
	DEFAULTCOLORMODE=10
	if is32 $GSBIN; then
	    GAMMAFILE=km2430_2.icm
	else
	    GAMMAFILE=hpclj2600n-0.icm
	fi
	QUALITY=1
	;;
*)
	DEFAULTCOLORMODE=10
	;;
esac

while getopts "24o:b:cC:d:g:l:u:L:m:n:p:q:r:s:tABS:D:G:I:PX:Vh?" opt
do
	case $opt in
	b)	BPP="$OPTARG";;
	c)	COLOR=-c;;
	d)	DUPLEX="$OPTARG";;
	g)	GSOPTS="$GSOPTS $OPTARG";;
	m)	MEDIA="$OPTARG";;
	n)	COPIES="$OPTARG";;
	p)	PAPER="$OPTARG";;
	q)	QUALITY="$OPTARG";;
	r)	RES="$OPTARG";;
	s)	SOURCE="$OPTARG";;
	t)	SAVETONER="-t";;
	l)	CLIP_LR="-l $OPTARG";;
	u)	CLIP_UL="-u $OPTARG";;
	L)	CLIP_LOG="-L $OPTARG";;
	A)	AIB=-A;;
	B)	BC=-B;;
	C)	COLORMODE="$OPTARG";;
	S)	COLOR2MONO="-S$OPTARG";;
	D)	DEBUG="$OPTARG";;
	G)	GAMMAFILE="$OPTARG";;
	I)	INTENT="$OPTARG";;
	P)	NOPLANES=-P;;
	X)	EXTRAPAD="-X $OPTARG";;
	2)	NUP="2";;
	4)	NUP="4";;
	o)	case "$OPTARG" in
		l*)	NUP_ORIENT=-l;;
		s*)	NUP_ORIENT=-r;;
		p*|*)	NUP_ORIENT=;;
		esac;;
	V)	echo "$VERSION"; foo2hp -V; exit 0;;
	h|\?)
		if [ "$CMDLINE" != "-?" -a "$CMDLINE" != -h ]; then
		    echo "Illegal command:"
		    echo "	$0 $CMDLINE"
		    echo
		fi
		usage;;
	esac
done
shift `expr $OPTIND - 1`

#
#	Select the ghostscript device to use
#
case "$BPP" in
1)	if [ "" = "$COLOR" ]; then
	    GSDEV=-sDEVICE=pbmraw
	else
	    GSDEV=-sDEVICE=bitcmyk
	fi
	case "$GAMMAFILE" in
	default)
	    if is32 $GSBIN; then
		GAMMAFILE=km2430_2.icm
		GAMMAFILE=hpclj2600n-1.icm
	    else
		GAMMAFILE=hpclj2600n-0.icm
	    fi
	    ;;
	none) GAMMAFILE=;;
	esac
	;;
2)	if [ "" = "$COLOR" ];
	then
	    # GSDEV=-sDEVICE=pgmraw
	    # error "2-bpp monochrome is not yet supported"
	    GSDEV="-sDEVICE=cups -dcupsColorSpace=3 -dcupsBitsPerColor=2"
	    GSDEV="$GSDEV -dcupsColorOrder=2"
	else
	    GSDEV="-sDEVICE=cups -dcupsColorSpace=6 -dcupsBitsPerColor=2"
	    GSDEV="$GSDEV -dcupsColorOrder=2"
	fi

	case "$GAMMAFILE" in
	default) 
	    if is32 $GSBIN; then
		GAMMAFILE=km2430_2.icm
		GAMMAFILE=hpclj2600n-1.icm
	    else
		GAMMAFILE=
	    fi
	    ;;
	none) GAMMAFILE=;;
	esac
	;;
*)	error "Illegal number of bits per plane ($BPP)";;
esac

#
case "$QUALITY" in
0)
    GSOPTS="-dCOLORSCREEN $GSOPTS"
    ;;
1)
    GSOPTS="-dCOLORSCREEN $GSOPTS"
    ;;
2)
    GSOPTS="-dMaxBitMap=500000000 $GSOPTS"
    ;;
wts)
    GSOPTS="-dCOLORSCREEN $GSOPTS"
    ;;
esac

#
#	Validate media code
#
case "$MEDIA" in
1|plain)	MEDIA=1;;
514|preprinted)	MEDIA=514;;
513|letterhead)	MEDIA=513;;
2|transparency)	MEDIA=2;;
515|prepunched)	MEDIA=515;;
265|labels)	MEDIA=265;;
260|bond)	MEDIA=260;;
516|recycled)	MEDIA=516;;
512|color)	MEDIA=512;;
276|tough)	MEDIA=276;;
267|envelope)	MEDIA=267;;
258|light)	MEDIA=258;;
262|heavy)	MEDIA=262;;
261|cardstock)	MEDIA=261;;
268|lightglossy)	MEDIA=268;;
269|glossy)	MEDIA=269;;
270|heavyglossy)	MEDIA=270;;
277|cover)	MEDIA=277;;
278|photo)	MEDIA=278;;
[0-9]*)		;;
*)		error "Unknown media code $MEDIA";;
esac

#
#	Validate source (InputSlot) code
#
case "$SOURCE" in
1|tray2)	SOURCE=1;;
4|tray1)	SOURCE=4;;
7|auto)		SOURCE=7;;
[0-9]*)		;;
*)		error "Unknown source code $SOURCE";;
esac

#
#	Validate Duplex code
#
case "$DUPLEX" in
1|off|none)	DUPLEX=1;;
2|long*)	DUPLEX=2;;
3|short*)	DUPLEX=3;;
[0-9]*)		;;
*)		error "Unknown duplex code $DUPLEX";;
esac

#
#	Validate Resolution
#
case "$RES" in
600x600)	;;
1200x600)	;;
2400x600)	;;
*)		error "Illegal resolution $RES";;
esac

#
#	Figure out the paper dimensions in pixels/inch, and set the
#	default clipping region.  Unfortunately, this is a trouble
#	area for ZjStream printers.  Various versions of ZjS print
#	engines react differently when asked to print into their
#	unprintable regions.
#
set_clipping() {
    ulx=$1; uly=$2
    lrx=$3; lry=$4

    # Set clipping region if it isn't already set
    if [ "$CLIP_UL" = "" ]; then
	case "$RES" in
	600x600)	ulx=`expr $ulx / 2`;;
	2400x600)	ulx=`expr $ulx \* 2`;;
	esac
	CLIP_UL="-u ${ulx}x${uly}"
    fi
    if [ "$CLIP_LR" = "" ]; then
	case "$RES" in
	600x600)	lrx=`expr $lrx / 2`;;
	2400x600)	lrx=`expr $lrx \* 2`;;
	esac
	CLIP_LR="-l ${lrx}x${lry}"
    fi
}

case "$PAPER" in
1|letter)	PAPER=1;	paper=letter;    XDIM="10200"; YDIM="6600"
		set_clipping 172 80	172 80
		;;
5|legal)	PAPER=5;	paper=legal;     XDIM="10200"; YDIM="8400"
		set_clipping 172 80	172 80
		;;
7|executive)	PAPER=7;	paper=executive; XDIM="8700";  YDIM="6300"
		set_clipping 174 78	174 78
		;;
9|a4|A4)	PAPER=9;	paper=a4;        XDIM="9920";  YDIM="7016"
		set_clipping 176 84	176 84
		;;
11|a5|A5)	PAPER=11;	paper=a5;        XDIM="6992";  YDIM="4960"
		set_clipping 176 80	176 80
		;;
13|b5|B5|b5jis)	PAPER=13;	paper=b5;        XDIM="8598";  YDIM="6070"
		set_clipping 172 83	171 83
		;;
20|"env#10")	PAPER=20;	paper=env10;     XDIM="4950";  YDIM="5700"
		set_clipping 171 78	171 78
		;;
27|envDL)	PAPER=27;	paper=envDL;     XDIM="5200";  YDIM="5200"
		set_clipping 176 84	176 84
		;;
28|envC5)	PAPER=28;	paper=envC5;     XDIM="7650";  YDIM="5408"
		set_clipping 170 80	169 80
		;;
34|envB5)	PAPER=34;	paper=envB5;     XDIM="8316";  YDIM="5892"
		set_clipping 174 74	174 74
		;;
37|envMonarch)	PAPER=37;	paper=envMonarch;XDIM="4650";  YDIM="4500"
		set_clipping 174 78	173 78
		;;
*)		error "Unimplemented paper code $PAPER";;
esac
# e.g. /usr/share/ghostscript/7.07/lib/gs_statd.ps
PAPERSIZE="-sPAPERSIZE=$paper";

case "$RES" in
600x600)	XDIM=`expr $XDIM / 2`;;
1200x600)	;;
2400x600)	XDIM=`expr $XDIM \* 2`;;
esac
DIM="${XDIM}x${YDIM}"

#
# If there is an argument left, take it as the file to print.
# Else, the input comes from stdin.
#
if [ $# -ge 1 ]; then
    if [ "$LPJOB" = "" ]; then
	: # LPJOB="$1"
    fi
    exec < $1
fi

#
# Filter thru psnup if N-up printing has been requested
#
case $NUP in
2)	PREFILTER="nup2";;
4)	PREFILTER="nup4";;
*)	PREFILTER=cat;;
esac

#
#	Overload -G.  If the file name ends with ".icm" or ".ICM"
#	then convert the ICC color profile to a Postscript CRD,
#	then prepend it to the users job.  Select the intent
#	using the -I option.
#

create_crd() {
    #
    # Create a Postscript CRD
    #
    ICC2PS=$PREFIX/bin/foo2zjs-icc2ps
    if [ -x $ICC2PS ]; then
	case "$GAMMAFILE" in
	none.icm | */none.icm)
	    ;;
	*)
	    $ICC2PS -o $GAMMAFILE -t$INTENT > $ICCTMP.crd.ps 2>$ICCTMP.log \
		|| error "Problem converting .ICM file to Postscript"
	    ;;
	esac
	    
	cat > $ICCTMP.usecie.ps <<-EOF
		%!PS-Adobe-3.0
		<</UseCIEColor true>>setpagedevice
	EOF
	if [ "$QUALITY" = wts ]; then
	    cat >> $ICCTMP.usecie.ps <<-EOF
		<< /UseWTS true >> setuserparams
		<<
		    /AccurateScreens true
		    /HalftoneType 1
		    /HalftoneName (Round Dot Screen)
		    /SpotFunction { 180 mul cos exch 180 mul cos add 2 div}
		    /Frequency 137
		    /Angle 37
		>> sethalftone
		EOF
	fi
	cat > $ICCTMP.selcrd.ps <<-EOF
		/Current /ColorRendering findresource setcolorrendering
	EOF
	case "$GAMMAFILE" in
	none.icm | */none.icm) GAMMAFILE="$ICCTMP.usecie.ps";;
	*)	GAMMAFILE="$ICCTMP.usecie.ps $ICCTMP.crd.ps $ICCTMP.selcrd.ps";;
	esac
    else
	GAMMFILE=
    fi
}

if [ $DEBUG -gt 0 ]; then
    ICCTMP=/tmp/icc
else
    ICCTMP=/tmp/icc$$
fi

if [ "" = "$COLOR" ]; then
    COLORMODE=
    GAMMAFILE=
else
    case "$COLORMODE" in
    default)	COLORMODE=$DEFAULTCOLORMODE;;
    esac
fi

CRDBASE="$PREFIX/share/foo2zjs/crd"
PSFILES="$PREFIX/share/foo2hp/psfiles"
case "$RES" in
    600x600)	SCREEN=screen1200.ps;;
    1200x600)	SCREEN=screen1200.ps;;
    2400x600)	SCREEN=screen2400.ps;;
esac

case "$COLORMODE" in
0|"")
    # Monochrome
    ;;
10|icm)
    # Use old ICM method
    AIB=-A
    BC=-B
    case "$GAMMAFILE" in
    none.icm | */none.icm)
	create_crd
	;;
    *.icm|*.ICM|*.icc|*.ICC)
	#
	# Its really an .ICM file, not a gamma file.
	#
	# The file can be a full path name, or the name of a file in $SHARE/icm/
	#
	if [ -r "$GAMMAFILE" ]; then
	    create_crd
	elif [ -r "$SHARE/icm/$GAMMAFILE" ]; then
	    GAMMAFILE="$SHARE/icm/$GAMMAFILE"
	    create_crd
	else
	    GAMMAFILE=
	fi
	;;
    esac
    ;;
*.crd)
    GAMMAFILE="$CRDBASE/prolog.ps"
    if [ -f $COLORMODE ]; then
	GAMMAFILE="$GAMMAFILE $COLORMODE"
    elif [ -f $CRDBASE/$COLORMODE ]; then
	GAMMAFILE="$GAMMAFILE $CRDBASE/$COLORMODE"
    else
	error "Can't find CRD '$COLORMODE' in . or in $CRDBASE"
    fi
    GAMMAFILE="$GAMMAFILE $CRDBASE/$SCREEN"
    ;;
*)
    error "Unknown color method '$COLORMODE'"
    ;;
esac

if [ "" != "$COLOR" ]; then
    if [ "" = "$AIB" -a "" = "$BC" ]; then
	# Faster, but can't handle AllIsBlack or BlackClears
	: #GSDEV=-sDEVICE=pksmraw
    else
	# Can't handle different size pages
	: #GSDEV=-sDEVICE=bitcmyk
    fi
fi

#
#	Figure out USERNAME
#
if [ "$LPUSER" != "" ]; then
    USER="$LPUSER@$LPHOST"
else
    USER=""
fi

#
#	Main Program, just cobble together the pipeline and run it
#
#	The malarky with file descriptors 1 and 3 is to avoid a bug in
#	(some versions?) of Ghostscript where Postscript's stdout gets
#	intermingled with the printer drivers output, resulting in
#	corrupted image data.
#
#	CUPS also does grief by adding its own PS code to the input file.
#	We take care of that with the sed command.  Thus, Well Tempered
#	Screening now works!
#
GS="$GSBIN -q -dBATCH -dSAFER -dQUIET -dNOPAUSE"

sed 's#^[^/]*cupsPSLevel2#false#' | \
$PREFILTER \
| ($GS $PAPERSIZE -g$DIM -r$RES $GSDEV $GSOPTS \
    -sOutputFile="|cat 1>&3" $GAMMAFILE - >/dev/null 2>&1) 3>&1 \
| foo2hp -r$RES -g$DIM -p$PAPER -m$MEDIA -n$COPIES -d$DUPLEX -s$SOURCE \
	    $COLOR -b$BPP $CLIP_UL $CLIP_LR $CLIP_LOG $SAVETONER \
	    -J "$LPJOB" -U "$USER" \
	    $BC $AIB $COLOR2MONO $NOPLANES $EXTRAPAD -D$DEBUG

#
#	Log the command line, for debugging and problem reports
#
if [ -x /usr/bin/logger ]; then
    logger -t "$BASENAME" -p lpr.info -- \
	"$GSBIN $PAPERSIZE -g$DIM -r$RES $GSDEV $GSOPT $GAMAFILE"
    logger -t "$BASENAME" -p lpr.info -- \
	"foo2hp -r$RES -g$DIM -p$PAPER -m$MEDIA \
-n$COPIES -d$DUPLEX -s$SOURCE $COLOR -b$BPP $CLIP_UL $CLIP_LR $CLIP_LOG \
$SAVETONER $BC $AIB $COLOR2MONO $NOPLANES $EXTRAPAD"
fi

#
#	Remove cruft
#
if [ $DEBUG -eq 0 ]; then
    for i in crd.ps log usecie.ps selcrd.ps
    do
	file="$ICCTMP.$i"
	[ -f $file ] && rm -f $file
    done
fi

exit 0