#! /bin/bash
# This script tests: pbmtoepsi pbmtopsg3 pbmtolps psidtopgm pstopnm
# Also requires: gs pnmtopnm pnmcrop

  alias pbmtoepsi="${PBM_TESTPREFIX}pbmtoepsi"
  alias pbmtolps="${PBM_TESTPREFIX}pbmtolps"
  alias pbmtopsg3="${PBM_TESTPREFIX}pbmtopsg3"
  alias psidtopgm="${PBM_TESTPREFIX}psidtopgm"
  alias pstopnm="${PBM_TESTPREFIX}pstopnm"
  alias pnmcrop="${PBM_BINPREFIX}pnmcrop"
  shopt -s expand_aliases

# This script is for testing alternative (or minor) utilities that
# read/write Postscript and encapsulated Postscript:
# pbmtoepsi, pbmtopsg3, pbmtolps and psidtopgm.
#
# We keep these tests separate from those for pnmtops and pstopnm
# which are far more popular.
#
# pbmtopsg3 and pbmtolps produce output that require pstopnm for decoding.
#
# If ps-roundtrip.test succeeds and this test fails, it is most likely
# a problem with one of the minor utilities, and vice versa.

# pstopnm does not use libnetpbm functions for output. 
# Output is filtered through pnmtopnm.

# Test 1. Should print: 2425386270 41
pbmtopsg3 -dpi=72 testgrid.pbm \
     > ${tmpdir}/testgrid1.ps && \
pstopnm -xborder=0 -yborder=0 -llx=0 -lly=-16 -urx=14 \
    -dpi=72 -stdout -quiet -pbm ${tmpdir}/testgrid1.ps | \
    pnmcrop | cksum


# Test 2. Should print: 2425386270 41
pbmtolps -dpi 72 testgrid.pbm \
     > ${tmpdir}/testgrid2.ps && \
pstopnm -xborder=0 -yborder=0 -dpi=72 -stdout \
    -quiet ${tmpdir}/testgrid2.ps -pbm | \
  pnmcrop | cksum


# Test 3. Should print: 2916080186 235
# Output is pgm maxval=1 with black and white inverted.
#
pbmtoepsi testgrid.pbm > ${tmpdir}/testgrid.epsi && \
xysizebps=`awk  '/BeginPreview/ {print $2,$3,$4}' \
    ${tmpdir}/testgrid.epsi` && \
awk '/^%%BeginPreview:/ { p=1; next } /^%%EndImage/ { p=0; next } \
  p==1 && /%[ \t0-9a-fA-F]+/ { print substr($0,2); next } \
  p==1 {print "!"$0}' \
    ${tmpdir}/testgrid.epsi | psidtopgm $xysizebps | cksum


rm ${tmpdir}/testgrid[12].ps  ${tmpdir}/testgrid.epsi