#!/bin/sh

# application/vnd.cups-pdf -> application/vnd.cups-postscript filter

# Contributed by Johan Kiviniemi. Licensed under the terms of the CUPS Debian
# packaging.
# The typical filter chain using this filter:
# (something that outputs pdf)
# -> pdftopdf
# -> cpdftocps (runs pdftops -> pstops)
# -> (postscript printer)

# The emit-jcl option can be safely passed through to pstops, since pdftops
# strips any JCL output by pdftopdf before processing the PDF. pstops then
# simply does the right thing regarding JCL for pdftops’ output.

set -e

# These options are *not* passed through to pstops, since pdftopdf or
# equivalent has already processed them.
MASK='
  brightness
  Collate
  cupsEvenDuplex
  fitplot
  gamma
  hue
  landscape
  mirror
  multiple-document-handling
  natural-scaling
  number-up
  number-up-layout
  orientation-requested
  OutputOrder
  page-border
  page-bottom
  page-label
  page-left
  page-ranges
  page-right
  page-set
  page-top
  position
  saturation
  scaling
  sides
'

# Convert MASK to a regexp.
MASK_RE=$(
  set -- $MASK
  IFS='|'
  printf "%s" "$*"
)

# Annihilate all forms of the masked options from $5:
# - <option>=parameter
# - <option>   (boolean)
# - no<option> (boolean)
MASKED_OPTS=$(
  printf "%s" "$5" | \
    sed -r -e 's/(^|\s+)(no)?('"$MASK_RE"')(=\S*)?//gi' -e 's/^\s+//'
)

/usr/lib/cups/filter/pdftops "$@" | \
  /usr/lib/cups/filter/pstops "$1" "$2" "$3" 1 "$MASKED_OPTS" | tee /tmp/printout

# vim:set et sw=2 sts=2: