#!/usr/bin/perl

print "##\n";
print "## image-depend - generate dependencies for images.\n";
print "##                Images are created by 'gnuplot'\n";
print "##                from *.gpi input files\n";
print "##\n";
print "## Developed by Lubomir Host 'rajo' <rajo AT platon.sk>\n";
print "## Copyright (c) 2003 Platon SDG\n";
print "## Licensed under terms of GNU General Public License.\n";
print "## All rights reserved.\n";
print "##\n\n";
print "## \$Platon\$\n";

@ARGV = ('/dev/stdin') unless @ARGV;

$prefix     = "images";
$input_patt = '^.*\.gpi$';
$pattern    = '^.*\.dat$';
$rule       = "\@echo '---- \$\@: \$?'\n	touch \$@";

$used_files = "";

#printf STDERR "Processing files: ";
for $input ( @ARGV ) {
#	printf STDERR "$input ";
	if ($input =~ /$input_patt/) {
		open $INPUT, "<$input"  or die "can't open file '$input': $!";
		$line = 1;

		print "\n$input: ";
		while (<$INPUT>) {

			chop;
			next if (m/^#/);	# ignore comments
			
			foreach my $file (split "\"", $_) {
				#print "Testing '$file'\n";
				if ($file =~ /$pattern/ && -f "$prefix/$file" ) {
					#print "\\\n	# line $line\n";
					print "\\\n	$prefix/$file ";
					$used_files .= "# USED: $prefix/$file\n"
				}
			}
			$line++;
		}
		print "\n	$rule\n";
		close ($INPUT);
	}
}

print "#########################\n";
print "# Used files:\n";
print $used_files;
print "\n# End of dependencies\n";
print "# vim: ft=make\n";

# Next lines are needed




# vim: ft=perl