comment on

So you are scraping URL's out of a web page (using a CPAN module, of course), and they take all sorts of different forms: some absolute, some relative. The relative ones may or may not begin with a slash, etc.. Your job is to figure out where all of these links really go. URI::URL is your friend.

use strict;
use URI::URL;
use constant BASE => 'http://www.pair.com/pair/support/index.html';

print "BASE is ", BASE, "\n\n";

while ( chomp(my $path = <DATA>) ) {
    &tryit( $path );
}

sub tryit {
    my $relative = shift;
    my $path = URI::URL->new($relative)->abs( BASE, 1 );
    print "$relative ->\n\t$path\n\n";
}

__DATA__
http://www.pair.com
/index.html
https://www.pairnic.com/faq.m
search/
library.html
[download]

Here's the output:

BASE is http://www.pair.com/pair/support/index.html

http://www.pair.com ->
        http://www.pair.com/

/index.html ->
        http://www.pair.com/index.html

https://www.pairnic.com/faq.m ->
        https://www.pairnic.com/faq.m

search/ ->
        http://www.pair.com/pair/support/search/

library.html ->
        http://www.pair.com/pair/support/library.html

In reply to Determine absolute URL given a relative URL and the location where it was found. by ehdonhon

Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
Want more info? How to link or How to display code and escape characters are good places to start.


Welcome to the Monastery
	PerlMonks