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Halstead.txt
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Halstead.txt
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use File::Slurp "slurp";
use List::MoreUtils "uniq";
sub log2 { return log(shift)/log(2) }
($lista, $fuente) = (shift, shift);
$codigo = slurp $fuente;
@lista = split '\n', slurp $lista;
@lista = sort { length $b <=> length $a } @lista;
$qq = chr(34);
$q = chr(39);
$codigo =~ s/\\\\/ \\\\ /g;
$codigo =~ s/\\$q|\\$qq/ /g;
$codigo =~ s/$q$q$q/ /g;
$codigo =~ s/$qq$qq$qq/ /g;
$codigo =~ s/\s+/ /g;
push @operandos, $1 while $codigo =~ m"(\".*?\"|'.*?')"g;
$codigo =~ s/'.*?'|".*?"/ /g;
$codigo =~ s/[\{\[\(\)\]\}]/ /g;
$codigo =~ s/[\.:,;]/ /g;
foreach $op (@lista) {
if ($op =~ m'^\W+$') { (push @operadores, $1) && ($codigo =~ s{\Q$op\E}{ }) while $codigo =~ m"(\Q$op\E)"g }
else { (push @operadores, $1) && ($codigo =~ s{\b\Q$op\E\b}{ }) while $codigo =~ m"\b(\Q$op\E)\b"g }
}
foreach $op (split '\s+', $codigo) { push @operandos, $op if $op =~ m'\S+' }
$n1 = scalar uniq @operadores;
$n2 = scalar uniq @operandos;
$N1 = scalar @operadores;
$N2 = scalar @operandos;
print "\n\nn1: $n1 (", join ',', uniq @operadores ,")\n";
print "\nN1: $N1 (", join ',', @operadores ,")\n";
print "\nn2: $n2 (", join ',', uniq @operandos ,")\n";
print "\nN2: $N2 (", join ',', @operandos ,")\n\n";
$V = ($N1 + $N2) * log2($n1 + $n2);
$D = $n1/2 * $N2/$n2;
print " Largo del Programa: N = ", $N1 + $N2, "
Tamanio del Vocabulario del Programa: n = ", $n1 + $n2 ,"
Volumen del Programa: V = $V
Nivel de Dificultad: D = $D
Nivel del Programa: L = ", 1/$D ,"
Esfuerzo de Implementacion: E = ", $V * $D ,"
Tiempo de Entendimiento: T = ", ($V * $D)/18, "\n\n";