I am building a very simple html-file parser, where I want to retrieve the contents of a single, well-formatted file.
It's not dynamic yet, as I'm still struggling with a, perhaps very simple, problem.
Specifically, I can't end a loop..
Some code is provided below. The problematic part is the "while ($html)"-part.
Parsing static files is not problematic (with "while (<>)"), but as soon as I'm looping through this retrieved html-file, it's causing an endless loop.
Any help would be much appreciated.
Also: this is my first post to perlmonks, so be gentle, dear monks!
#!/usr/bin/perl -w
# Get urls from result page
use warnings;
use strict;
use LWP::Simple;
my ($html, $url);
my $count = 0;
$html = get("http://localhost:8080/html.htm") or die "Couldn't fetch p
+age.";
while($html) # <- Problematic part..
{
$html =~ m{<(a class=\"smallV110\" href=\"/)(.*?)\">} || die "couldn't
+ match"; #match regexp and capture backreference to $2, or die with e
+rror
$url = $2;
print "$url\n";
$count++;
print "$count\n";
}
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.