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POPerl WWW::Mechanize Comparing the response header content length of different urls
 

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  1. POPerl WWW::Mechanize Comparing the response header content length of different urls
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    <p><strong>I have a question I'm hoping you could help with?</strong></p> <p>I have two text files containing the following:</p> <p><strong>FILE1.txt</strong></p> <pre><code>http://www.dog.com/ http://www.cat.com/ http://www.antelope.com/ </code></pre> <p><strong>FILE2.txt</strong></p> <pre><code>1 2 Barry </code></pre> <p><strong>The output I correctly achieve is as follows:</strong></p> <pre><code>http://www.dog.com/1 http://www.dog.com/2 http://www.dog.com/Barry http://www.cat.com/1 http://www.cat.com/2 http://www.cat.com/Barry http://www.antelope.com/1 http://www.antelope.com/2 http://www.antelope.com/Barry </code></pre> <p><strong>Code to do the above</strong></p> <pre><code> open my $animalUrls, '&lt;', 'FILE1.txt' or die "Can't open: $!"; open my $directory, '&lt;', 'FILE2.txt' or die "Can't open: $!"; my @directory = &lt;$directory&gt;; #each line of the file into an array close $directory or die "Can't close: $!"; while (my $line = &lt;$animalUrls&gt;) { chomp $line; print $line.$_ foreach (@directory); push (@newListOfUrls, $line.$_) foreach (@directory); #put each new url into array } </code></pre> <p><strong>Now the problem I am having:</strong></p> <p>I need to get the Content Length of the original urls (File1.txt) and compare the Content-Length of each of the new urls with the <strong>corresponding</strong> original one to see if they are the same or different, for example:</p> <ul> <li>I need to compare the Content-Length of <a href="http://www.dog.com/1" rel="nofollow">http://www.dog.com/1</a> with the Content-Length of original url <a href="http://www.dog.com/" rel="nofollow">http://www.dog.com/</a> to see if there is a difference.</li> <li>Then I need to compare the Content-Length of <a href="http://www.dog.com/2" rel="nofollow">http://www.dog.com/2</a> with the Content-Length of the original url <a href="http://www.dog.com/" rel="nofollow">http://www.dog.com/</a> to see if there is a difference.</li> <li>Then I need to compare the Content-Length of <a href="http://www.dog.com/Barry" rel="nofollow">http://www.dog.com/Barry</a> with the Content-Length of the original url <a href="http://www.dog.com/" rel="nofollow">http://www.dog.com/</a> to see if there is a difference.</li> <li>Then I need to compare the Content-Length of <a href="http://www.cat.com/1" rel="nofollow">http://www.cat.com/1</a> with the Content-Length of the original url <a href="http://www.cat.com/" rel="nofollow">http://www.cat.com/</a> to see if there is a difference.</li> <li>Then I need to compare the Content-Length of <a href="http://www.cat.com/2" rel="nofollow">http://www.cat.com/2</a> with the Content-Length of the original url <a href="http://www.cat.com/" rel="nofollow">http://www.cat.com/</a> to see if there is a difference.</li> <li>And so on........</li> </ul> <p><strong>Code to get the Content-Length:</strong></p> <pre><code>print $mech-&gt;response-&gt;header('Content-Length'); #returns the content length </code></pre> <p>What I am having trouble with is how to compare each new url with the <strong>correct corresponding original one? (i.e not accidently comparing the Content-Length of <a href="http://www.cat.com/Barry" rel="nofollow">http://www.cat.com/Barry</a> with the Content-Length of <a href="http://www.dog.com/" rel="nofollow">http://www.dog.com/</a>)</strong> Should I use a hash maybe and how would I go about that?</p> <p>Your help with this would be much appreciated, Many Thanks</p>
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    1. COI'm glad you took our advice regarding the open. Well done! :)
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    2. CO@simbabque - Yeah thanks, would of been stupid to ignore it :), any thoughts on this one?
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    3. COBy the way, I think WWW::Mechanize might be a little oversize for this. If you only want to get to the Content-Length, I would just use LWP::UserAgent. But since Mechanize inherits from LWP::UserAgent, it doesn't make that much of a difference, really. If you feel more comfortable with Mechanize, stick to it.
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