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lib/AI/Logic/AnswerSet.pm  view on Meta::CPAN

	open(SAVESTDOUT, ">&STDOUT") or die "Can't save STDOUT: $!\n";
	open(STDOUT, ">$_[0]") or die "Can't open STDOUT to $_[0]", "$!\n";


	my @args = ("./dlv", "$_[1]");
	system(@args) == 0
		or die "system @args failed: $?";

	open(STDOUT,">&SAVESTDOUT"); #close file and restore STDOUT
	close OUTPUT;

}

sub executeAndSave {	#Executes DLV and saves the output of the program written by the user in a file

	open(SAVESTDOUT, ">&STDOUT") or die "Can't save STDOUT: $!\n";
	open(STDOUT, ">$_[0]") or die "Can't open STDOUT to $_[0]", "$!\n";

	my @args = ("./dlv --");
	system(@args) == 0 or die "system @args failed: $?";

	open(STDOUT,">&SAVESTDOUT"); #close file and restore STDOUT
	close OUTPUT;


}


sub iterativeExec {	# Executes an input program with several instances and stores them in a bidimensional array

	my @input = @_;

	my @returned_value;

lib/AI/Logic/AnswerSet.pm  view on Meta::CPAN

			my $elem = $files[$i];
			chomp $elem;
			my @args = ("./dlv", "@input", "$dir$elem", "$option");
			my (@out) = `@args`;
			push @{$returned_value[$i]}, @out;
		}
		
	}

	else {
		print "INPUT ERROR\n";
	}

	return @returned_value;

}

sub singleExec {	 # Executes a single input program or opens the DLV terminal and stores it in an array

	my @input = @_;
	my @returned_value;

lib/AI/Logic/AnswerSet.pm  view on Meta::CPAN

sub getFacts {	# Return the facts of the input program

	my $input = shift;

	my @isAFile = stat($input);

	my @facts;

	if(@isAFile) {

		open INPUT, "<", "$input";
		my @rows = <INPUT>;
		foreach my $row (@rows) {
			if($row =~ /^(\w+)(\(((\w|\d|\.)+,?)*\))?\./) {
				push @facts, $row;
			}
		}
		close INPUT;

	}
	else {
		my @str = split /\. /,$input;
		foreach my $elem (@str) {

			if($elem =~ /^(\w+)(\(((\w|\d|\.)+,?)*\))?\.?$/) {
				push @facts, $elem;
			}
		}