plan9fox/sys/lib/lp/process/pdfgs

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#!/bin/rc
# pdfgs pdffile [gsdev] - generate PS from PDF
#
# we don't go through postscript, because to
# get to postscript, we send the pdf through gs!
# much easier to just go directly.
switch($#*) {
case 2
GSDEVICE=$2
case 1
GSDEVICE=`{echo $LPCLASS | sed 's/(.*\+)?gs!([^+]*)(\+.*)?/\2/'}
case *
echo 'usage: pdfgs pdffile [gsdev]' >[1=2]
exit usage
}
GSTMPFILE=/tmp/pdf^$pid
GSOPT=('-sDEVICE='$GSDEVICE '-sOutputFile='^$GSTMPFILE -dSAFER -dNOPAUSE \
-dQUIET -dBATCH -dNOPAUSE)
# ps level 1 is extremely verbose and tends to run our
# printers out of memory when printing images.
if(~ $GSDEVICE pswrite && ~ $LPCLASS *post2*)
GSOPT=($GSOPT '-dLanguageLevel=2')
if not if(~ $GSDEVICE pswrite)
GSOPT=($GSOPT '-dLanguageLevel=1')
if(~ $OLIST '')
gs $GSOPT $1
if not {
PGLIST=`{echo $OLIST | sed 's/-o//;s/,/ /g;s/ / /g' | tr -cd '0-9 -'}
GSPGLIST=()
for(i in $PGLIST){
switch($i){
case -*
GSPGLIST=($GSPGLIST `{seq 1 `{echo $i|tr -d '-'}})
case *-
# BUG assume 100 >= number of pages
GSPGLIST=($GSPGLIST `{seq `{echo $i|tr -d '-'} 100})
case *-*
GSPGLIST=($GSPGLIST `{seq `{echo $i|tr '-' ' '}})
case *
GSPGLIST=($GSPGLIST $i)
}
}
GSPGLIST=$"GSPGLIST
echo '
/Page null def
/Page# 0 def
/PDFSave null def
/DSCPageCount 0 def
/DoPDFPage {dup /Page# exch store pdfgetpage pdfshowpage} def
GS_PDF_ProcSet begin
pdfdict begin
('^$1^') (r) file pdfopen begin
/npage pdfpagecount def
['^$GSPGLIST^']
{
dup dup
1 ge exch npage le and
{ DoPDFPage }
{ pop }
ifelse
} forall
' | gs $GSOPT - >/dev/null >[2=1]
}
cat $GSTMPFILE
rm -f $GSTMPFILE
exit ''