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#! /bin/bash
# This script tests: pbmtoepsi pbmtopsg3 psidtopgm pstopnm
# Also requires: gs pnmcrop
# This script is for testing alternative (or minor) utilities that
# read/write Postscript and encapsulated Postscript:
# pbmtoepsi, pbmtopsg3 and psidtopgm.
#
# We keep these tests separate from those for pnmtops and pstopnm
# which are far more popular.
#
# pbmtopsg3 produces output that requires pstopnm for decoding.
#
# We used to test pbmtolps here, but moved it out when gs changed its
# rendering formula.
#
# Failure message
## If ps-roundtrip.test succeeds and this test fails, it is most likely
## a problem with one of the alternate Postscipt utilities:
## pbmtoepsi, pbmtopsg3, or psidtopgm.
## If both tests fail it indicates a problem with pstopnm or gs.
# pstopnm does not use libnetpbm functions for output.
# Output is filtered through at least one Netpbm program.
# Test 1. Should print: 2425386270 41
testgrid1_ps=${tmpdir}/testgrid1.ps
pbmtopsg3 -dpi=72 testgrid.pbm \
> ${testgrid1_ps} && \
pstopnm -xborder=0 -yborder=0 -llx=0 -lly=-16 -urx=14 \
-dpi=72 -stdout -quiet -pbm ${testgrid1_ps} | \
pnmcrop | cksum
rm ${testgrid1_ps}
# Test 2. Should print: 2916080186 235
# Output is pgm maxval=1 with black and white inverted.
#
testgrid_epsi=${tmpdir}/testgrid.epsi
pbmtoepsi testgrid.pbm > ${testgrid_epsi} && \
xysizebps=`awk '/BeginPreview/ {print $2,$3,$4}' \
${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}' \
${testgrid_epsi} | psidtopgm $xysizebps | cksum
rm ${testgrid_epsi}
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