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Using RSS

by tmitch (Initiate)
on Feb 17, 2003 at 20:30 UTC ( #236104=perlquestion: print w/ replies, xml ) Need Help??
tmitch has asked for the wisdom of the Perl Monks concerning the following question:

Hi everyone, I am trying to implement RSS newsfeed on my site. I need to be able to snatch the XML page so that I can parse it and dynamically display the headline and URL on my site.

I have written the parsing function, and it works fine as long as I manually save the XML page to my machine. However (and bear with me, I'm sure this is elementary), I don't know how to save a remote file to a local server for processing. For example, here is what I've tried:

#!/usr/bin/perl

open (SITE, 'http://rss.com.com/2547-12-0-5.xml') or warn "Error opening location " ;

@site = <SITE> ;

close SITE or warn "Can't close location " ;

print @site ;

I'm sure there is a better way to open/save a remote XML page - and in fact, there may be a better way to implement the RSS altogether. Any suggestions would be greatly appreciated.

Thanks
~T

Comment on Using RSS
Re: Using RSS
by jasonk (Parson) on Feb 17, 2003 at 20:33 UTC
Re: Using RSS
by ajt (Prior) on Feb 17, 2003 at 21:22 UTC

    tmitch,

    To get files off a remote server, you will need to use one of a selection of fine tools. If you want to pulls the files off periodically, then you can use a scheduler such as cron or at, and a standalone executable such as wGet. If you want to get the files and work on them at the same time, then Perl has some excellent tools for this: LWP::UserAgent; LWP::Simple and HTTP::GHTTP.

    Once you have your XML file, you'll want to do something with it. Perl has some excellent tools for this too, including the just updated XML::RSS and my very own XML::RSS::Tools. Either way there are some nice examples and useful links in the documentation of both modules, and there is also useful stuff on XML.com

    As it happens I know that the perl-rss crew are planning to update the documents of XML::RSS with some nice links to example articles soon, so you won't have to dig around too much on your own.

    Here is a sneak preview (kellan's suggested list):

    Good luck!


    --
    ajt
Re: Using RSS
by Steve_p (Priest) on Feb 18, 2003 at 03:51 UTC

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