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Editing: pstopdf

#!/bin/sh

# $Id: pstopdf,v 1.3 2003/02/15 15:21:00 gurubert Exp $
#
# This is a Postscript to PDF filter for CUPS
#
# (C) 2003 Robert Sander <robert.sander@epigenomics.com>
# (C) 2008-2012 Till Kamppeter <till.kamppeter@gmail.com>
#
# Released under GPL
#
# NO WARRANTY AT ALL
#

set -e

PS2PS=`which ps2ps`
GS=`which gs`

PS2PS_OPTIONS="-dAutoRotatePages=/None -dAutoFilterColorImages=false \
               -dNOPLATFONTS -dPARANOIDSAFER -dNOINTERPOLATE -sstdout=%stderr"
PS2PDF_OPTIONS="-q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dCompatibilityLevel=1.3"
PS2PDF_OPTIONS="$PS2PDF_OPTIONS $PS2PS_OPTIONS"
PS2PDF_OPTIONS="$PS2PDF_OPTIONS -dColorImageFilter=/FlateEncode \
                -dPDFSETTINGS=/printer \
                -dColorConversionStrategy=/LeaveColorUnchanged"

echo "DEBUG: pstopdf $# args: $@" >&2
echo "DEBUG: PPD: $PPD" >&2

if [ $# -lt 5 -o $# -gt 6 ]; then

echo "ERROR: $0 job-id user title copies options [file]" >&2
  exit 1

# Read from given file.
if [ -n "$6" ]; then
  exec <"$6"
fi

tempfiles=
trap 'rm -f $tempfiles' 0 1 2 13 15

infile=$(mktemp -t pstopdf.XXXXXX)
tempfiles="$tempfiles $infile"

cat >"$infile"

# Did CUPS already take care of the number of copies? If not, we have to do it

donumcopies=
numcopies="$4"
if test -z "$numcopies"; then
    numcopies=1
fi
if test "$numcopies" -le "1"; then
    donumcopies="-dDoNumCopies"
fi

# Apply PPD settings.

resolution=
eval "$(printf "%s" "$5" | sed -nre 's/.*(^|\s)Resolution=([0-9.]+(x[0-9.]+)?).*/resolution="${resolution:-\2}"/p')"
if test -e "$PPD"; then
  eval "$(sed -nre 's/^\*DefaultResolution:\s*([0-9.]+(x[0-9.]+)?).*/resolution="${resolution:-\1}"/p' "$PPD")"
fi
echo "DEBUG: Resolution: $resolution" >&2

if test -n "$resolution"; then
  # If the resolution is not symmetric, use the lower of the two,
  # Ghostscript developers recommend to use square resolutions for the
  # pdfwrite and ps2write output devices.
  # See http://bugs.ghostscript.com/show_bug.cgi?id=690504
  xres=
  yres=
  eval "$(printf "%s" "$resolution" | sed -nre 's/.*(^|\s)([0-9]+)x([0-9]+).*/xres="\2"; yres="\3"/p')"
  if test -n "$xres" && test -n "$yres"; then
    if [ "$xres" -lt "$yres" ]; then
      resolution=$xres
    else
      resolution=$yres
    fi
  fi
fi

width=
height=
bl_x=
bl_y=
tr_x=
tr_y=
margin_l=
margin_b=
margin_r=
margin_t=
pagesize=
unit=
customw=
customh=
eval "$(printf "%s" "$5" | sed -nre 's/.*(^|\s)(PageSize|PageRegion)=(\S+).*/pagesize="${pagesize:-\3}"/p')"
if test -e "$PPD"; then
    eval "$(sed -nre 's/^\*DefaultPageSize:\s*(\S+).*/pagesize="${pagesize:-\1}"/p' "$PPD")"
fi
echo "DEBUG: Page size: $pagesize" >&2

eval "$(printf "%s" "$pagesize" | sed -nre 's/^Custom\.([0-9\.]+)x([0-9\.]+)(\S*)$/customw="\1"; customh="\2"; unit="\3"/p')"

if test -n "$customw" && test -n "$customh"; then
    echo "DEBUG: Custom page size: $customw x $customh $unit" >&2

if test "$unit" = "in"; then
	width="$(printf "scale=0; (%s)*(72.0)/(1.00)\n" "$customw" | bc)" 
	height="$(printf "scale=0; (%s)*(72.0)/(1.00)\n" "$customh" | bc)"
    elif test "$unit" = "cm"; then
	width="$(printf "scale=0; (%s)*(72.0)/(2.54)\n" "$customw" | bc)" 
	height="$(printf "scale=0; (%s)*(72.0)/(2.54)\n" "$customh" | bc)"
    elif test "$unit" = "mm"; then
	width="$(printf "scale=0; (%s)*(72.0)/(25.4)\n" "$customw" | bc)" 
	height="$(printf "scale=0; (%s)*(72.0)/(25.4)\n" "$customh" | bc)"
    else
	width="$(printf "scale=0; (%s)/(1.00)\n" "$customw" | bc)" 
	height="$(printf "scale=0; (%s)/(1.00)\n" "$customh" | bc)"
    fi

if test -e "$PPD"; then
	eval "$(sed -nre 's|^\*HWMargins:\s*(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s*|bl_x="\1"; bl_y="\2"; tr_x="\3"; tr_y="\4"|p' "$PPD")"

if test -n "$tr_x"; then
	    tr_x="$(printf "scale=8; (%s)-(%s)\n" "$width" "$tr_x" | bc)"
	fi
	if test -n "$tr_y"; then
	    tr_y="$(printf "scale=8; (%s)-(%s)\n" "$height" "$tr_y" | bc)"
	fi
    fi
elif test -n "$pagesize" && test -e "$PPD"; then
    eval "$(sed -nre 's|^\*PaperDimension\s+'"$pagesize"'(/[^:]+\|):\s*"(\S+)\s+(\S+)".*|width="\2"; height="\3"|p' "$PPD")"

eval "$(sed -nre 's|^\*ImageableArea\s+'"$pagesize"'(/[^:]+\|):\s*"(\S+)\s+(\S+)\s+(\S+)\s+(\S+)".*|bl_x="\2"; bl_y="\3"; tr_x="\4"; tr_y="\5"|p' "$PPD")"
fi

test -n "$bl_x" || bl_x=0
test -n "$bl_y" || bl_y=0
test -n "$tr_x" || tr_x=$width
test -n "$tr_y" || tr_y=$height

echo "DEBUG: Width: $width, height: $height, absolute margins: $bl_x, $bl_y, $tr_x, $tr_y" >&2

if test -n "$width" && test -n "$height" && \
    test -n "$bl_x" && test -n "$bl_y" && \
    test -n "$tr_x" && test -n "$tr_y"; then
    margin_l="$bl_x"
    margin_b="$bl_y"
    margin_r="$(printf "scale=8; (%s)-(%s)\n" "$width" "$tr_x" | bc)"
    margin_t="$(printf "scale=8; (%s)-(%s)\n" "$height" "$tr_y" | bc)"
fi
echo "DEBUG: Relative margins: $margin_l, $margin_b, $margin_r, $margin_t" >&2

if test -n "$margin_l" && test -n "$margin_b" && \
    test -n "$margin_r" && test -n "$margin_t"; then
    inject_ps="<</.HWMargins[$margin_l $margin_b $margin_r $margin_t] /Margins[0 0]>>setpagedevice"
fi

ppd_opts=
if test -n "$resolution"; then
  ppd_opts="${ppd_opts:+$ppd_opts }-r$resolution"
fi
if test -n "$width"; then
  ppd_opts="${ppd_opts:+$ppd_opts }-dDEVICEWIDTHPOINTS=$width"
fi
if test -n "$height"; then
  ppd_opts="${ppd_opts:+$ppd_opts }-dDEVICEHEIGHTPOINTS=$height"
fi
echo "DEBUG: PPD options: $ppd_opts" >&2

# We do not supply the margins to the ps2pdf process, as this breaks
# full-bleed printing and also disturbs the printing if PPDs have too
# conservative margin definitions.
inject_ps=

# Injection
echo "DEBUG: PostScript to be injected: $inject_ps" >&2
if test -n "$inject_ps"; then
  echo "DEBUG: Injecting PostScript: $inject_ps" >&2

orig_infile="$infile"

infile=$(mktemp -t pstopdf.XXXXXX)
  tempfiles="$tempfiles $infile"

perl -p -e 'if (! $did) { s:(^%!.*)$:\1\n'"$inject_ps"': && $did++; }' "$orig_infile" > "$infile"
fi

# DRM

DRM_MATCH='^%.*Removing the following.*lines is illegal.*Digital Copyright Act'
if egrep -q "$DRM_MATCH" "$infile"; then
  # This PS is DRM-infested. Normalize it with ps2ps first.
  echo "DEBUG: Normalizing Adobe Reader PostScript with ps2ps" >&2

DRMFILTER="$PS2PS $PS2PS_OPTIONS $ppd_opts - -"
else
  DRMFILTER=cat
fi

echo "DEBUG: Running $DRMFILTER | $GS $PS2PDF_OPTIONS $donumcopies $ppd_opts -sOutputFile=- $OPTIONS -c .setpdfwrite -f -" >&2
cat "$infile" | $DRMFILTER | $GS $PS2PDF_OPTIONS $donumcopies $ppd_opts -sOutputFile=- $OPTIONS -c .setpdfwrite -f -

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Editing: pstopdf

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