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#!/usr/bin/perl
use strict;
use warnings;
use utf8;
my ($file) = @ARGV;
defined($file) or die "USAGE: $0 filename\n";
my @matrix3 = readMatrix($file);
for (my $i = 0; $i < scalar(@matrix3); ++$i) {
my @matrix2 = setLowerPartZero($matrix3[$i]);
printMatrix(\@matrix2);
}
sub printMatrix
{
my ($matrix) = @_;
my $rows = scalar(@$matrix);
for (my $i = 0; $i < $rows; ++$i) {
my $ptr = $matrix->[$i];
my $cols = scalar(@$ptr);
for (my $j = 0; $j < $cols; ++$j) {
my $val = $ptr->[$j];
print "$val ";
}
print "\n";
}
print "\n\n\n";
}
sub setLowerPartZero
{
my ($matrix) = @_;
my $rows = scalar(@$matrix);
my @matrix2;
my $cols;
for (my $i = 0; $i < $rows; ++$i) {
my $ptr = $matrix->[$i];
my $m = scalar(@$ptr);
if (defined($cols) and $cols != $m) {
die "$0: setLowerPartZero: cols of different sizes $m $cols\n";
} else {
$cols = $m;
}
my @temp;
for (my $j = 0; $j < $cols; ++$j) {
$temp[$j] = ($i > $j) ? 0 : $ptr->[$j];
}
push @matrix2, \@temp;
}
return @matrix2;
}
sub readMatrix
{
my ($file) = @_;
my $label = "Connectors";
my @matrix;
my @matrix3;
my ($rows, $cols);
my $flag = 0;
open(FILE, "<", $file) or die "$0: Cannot open $file : $!\n";
while (<FILE>) {
if (/${label}[ \t]+(\d+)[ \t]+(\d+)/) {
$rows = $1;
$cols = $2;
$flag = 1;
next;
}
if ($flag) {
my @temp = split;
my $m = scalar(@temp);
next unless $m > 0;
if ($m != $cols) {
die "$0: readMatrix: cols of different sizes $m $cols\n";
}
push @matrix, \@temp;
if (scalar(@matrix) == $rows) {
my @matrix2 = @matrix;
push @matrix3, \@matrix2;
@matrix = ();
$flag = 0;
print STDERR "$0: ".scalar(@matrix3)." matrices have been read\n";
next;
}
}
}
close(FILE);
if (!defined($rows) or !defined($cols)) {
die "$0: Matrix $label not found in $file\n";
}
print STDERR "$0: Found matrix with $rows times $cols\n";
return @matrix3;
}
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