#!/usr/bin/perl
#This script matches words that are repeated within <num> words and ma
+rks them and prints out the original text with repeated words marked.
use strict;
use warnings;
print "Enter the name of the file to check: ";
my $inputfile = <>;
#Define how many words between matching a repeat.
my $numwords = 40;
open(TEXTFILE, $inputfile);
my @importedtextfile = <TEXTFILE>;
close(TEXTFILE);
my $counter = 0;
my @words;
#Split the sentences imported.
foreach (@importedtextfile) {
    my @tempsplit = split(/\s+/,  $_);
    foreach(@tempsplit) {
        push @words, $_;
    }
}
my @filteredlist = @words;
my $wordslength = scalar(@words);
$counter = 0;
foreach(@words) {
    my $i = 0;
    my $currentword = $_;
    $currentword =~ s/[\,\.]//g;
    #Start counting one word "right" of the one you are trying to matc
+h.
    my $startposition = $counter + 1;
    #Check <num> words and make sure you don't check empty strings in 
+array.
    while ($i < $numwords and $counter + $i < $wordslength) {
        if ($counter + $i + 1 < $wordslength) {
            my $matchword = $words[$startposition];
            $matchword =~ s/[\,\.]//g;
            #Match and replace in new array.
            if ($currentword =~ /\b$matchword\b/i) {
            $filteredlist[$startposition] = "*".$words[$startposition]
+."*";
            }
        }
        ++$startposition;
        ++$i;
    }
    ++$counter;
}
my $printedlist = join(" ", @filteredlist);
print "$printedlist\n";

[download]

This script reads a specified text-file from input and then checks for reoccurring words within specified numbers of words.

As an example. To be or not to be. Would result in "To be or not *to* be." at first pass, and second "To be or not *to* *be*.

The printout though does not preserve the original formatting of the text with line-breaks and such. I'm wondering if that is possible somehow, i guess it's all related to the split or the join.

In reply to Preserve original text formatting. by larsb

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
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