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#!/usr/local/bin/perl
# pdfcheck -- PDF autotest helper.
# $Id: //depot/Master/support/tests/checkpdf.pl#2 $
#
# Public domain. Originaly written 2004, Karl Berry.
#
# (Although it's much simpler and more functional in sh, Perl makes it
# possible to run on Windows, for TeX Live, etc. I hope someone cares
# some day.)
exit (&main ());
sub main
{
if (@ARGV != 2) {
print <<END_USAGE;
Usage: $0 PPZ_KNOWN_GOOD PDF_TO_CHECK
Run pdftoppm on PDF_TO_CHECK, and compare against PPZ_KNOWN_GOOD
(after uncompressing). For autotesting.
PPZ_KNOWN_GOOD should be created with pdftoppm | gzip -1.
See tests/common.mak.
END_USAGE
return 1;
}
my $good_type = $ARGV[0];
my $check_pdf = $ARGV[1];
die "No PDF file $check_pdf" if ! -s $check_pdf;
die "No good PPZ file $good_type" if ! -s $good_type;
# get image of the PDF file. We can't compare PDF files directly,
# they can vary from run to run. There is no simple pdftype program,
# and it seems a better test to look at the actual output image than
# just to run pdftotext.
#
# this creates checkpdf-000001.ppm (for a one page file).
my $check = system ("pdftoppm", $check_pdf, "checkpdf");
die "pdftoppm($check_pdf) failed, status $check"
if $check;
# compare page images, they should be exactly the same.
my $different = system ("zcat $good_type | cmp -s checkpdf-000001.ppm");
$different /= 8;
if ($different) {
warn "$0: ${check_pdf} different from $good_type.\n";
}
return $different;
}
#
# Run PROGRAM on ARGS, running output with clean_dvitype and returning as
# a string.
#
sub snarf_output
{
my ($program,@args) = @_;
# use safe (more or less) form of open.
local *PROG;
open (PROG, "-|", $program, @args) ||die "open($program @args |) failed: $!";
my @lines = <PROG>;
#warn "read lines from $program @args:\n@lines";
close (PROG) || warn "close($program @args |) failed: $!";
return &clean_dvitype (@lines);
}
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