XML::Atom::Feed(3) User Contributed Perl Documentation XML::Atom::Feed(3)NAMEXML::Atom::Feed - Atom feed
SYNOPSIS
use XML::Atom::Feed;
use XML::Atom::Entry;
my $feed = XML::Atom::Feed->new;
$feed->title('My Weblog');
$feed->id('tag:example.com,2006:feed-id');
my $entry = XML::Atom::Entry->new;
$entry->title('First Post');
$entry->id('tag:example.com,2006:entry-id');
$entry->content('Post Body');
$feed->add_entry($entry);
$feed->add_entry($entry, { mode => 'insert' });
my @entries = $feed->entries;
my $xml = $feed->as_xml;
## Get a list of the <link rel="..." /> tags in the feed.
my $links = $feed->link;
## Find all of the Atom feeds on a given page, using auto-discovery.
my @uris = XML::Atom::Feed->find_feeds('http://www.example.com/');
## Use auto-discovery to load the first Atom feed on a given page.
my $feed = XML::Atom::Feed->new(URI->new('http://www.example.com/'));
USAGE
XML::Atom::Feed->new([ $stream ])
Creates a new feed object, and if $stream is supplied, fills it with
the data specified by $stream.
Automatically handles autodiscovery if $stream is a URI (see below).
Returns the new XML::Atom::Feed object. On failure, returns "undef".
$stream can be any one of the following:
· Reference to a scalar
This is treated as the XML body of the feed.
· Scalar
This is treated as the name of a file containing the feed XML.
· Filehandle
This is treated as an open filehandle from which the feed XML can
be read.
· URI object
This is treated as a URI, and the feed XML will be retrieved from
the URI.
If the content type returned from fetching the content at URI is
text/html, this method will automatically try to perform auto-
discovery by looking for a <link> tag describing the feed URL. If
such a URL is found, the feed XML will be automatically retrieved.
If the URI is already of a feed, no auto-discovery is necessary,
and the feed XML will be retrieved and parsed as normal.
XML::Atom::Feed->find_feeds($uri)
Given a URI $uri, use auto-discovery to find all of the Atom feeds
linked from that page (using <link> tags).
Returns a list of feed URIs.
$feed->link
If called in scalar context, returns an XML::Atom::Link object
corresponding to the first <link> tag found in the feed.
If called in list context, returns a list of XML::Atom::Link objects
corresponding to all of the <link> tags found in the feed.
$feed->add_link($link)
Adds the link $link, which must be an XML::Atom::Link object, to the
feed as a new <link> tag. For example:
my $link = XML::Atom::Link->new;
$link->type('text/html');
$link->rel('alternate');
$link->href('http://www.example.com/');
$feed->add_link($link);
$feed->add_entry($entry)
Adds the entry $entry, which must be an XML::Atom::Entry object, to the
feed. If you want to add an entry before existent entries, you can pass
optional hash reference containing "mode" value set to "insert".
$feed->add_entry($entry, { mode => 'insert' });
$feed->entries
Returns list of XML::Atom::Entry objects contained in the feed.
$feed->language
Returns the language of the feed, from xml:lang.
$feed->author([ $author ])
Returns an XML::Atom::Person object representing the author of the
entry, or "undef" if there is no author information present.
If $author is supplied, it should be an XML::Atom::Person object
representing the author. For example:
my $author = XML::Atom::Person->new;
$author->name('Foo Bar');
$author->email('foo@bar.com');
$feed->author($author);
$feed->id([ $id ])
Returns an id for the feed. If $id is supplied, set the id. When
generating the new feed, it is your responsibility to generate unique
ID for the feed and set to XML::Atom::Feed object. You can use http
permalink, tag URI scheme or urn:uuid for handy.
UNICODE FLAGS
By default, XML::Atom takes off all the Unicode flag fro mthe feed
content. For example,
my $title = $feed->title;
the variable $title contains UTF-8 bytes without Unicode flag set, even
if the feed title contains some multibyte chracters.
If you don't like this behaviour and wants to andle everything as
Unicode characters (rather than UTF-8 bytes), set
$XML::Atom::ForceUnicode flag to 1.
$XML::Atom::ForceUnicode = 1;
then all the data returned from XML::Atom::Feed object and
XML::Atom::Entry object etc., will have Unicode flag set.
The only exception will be "$entry->content->body", if content type is
not text/* (e.g. image/gif). In that case, the content body is still
binary data, without Unicode flag set.
CREATING ATOM 1.0 FEEDS
By default, XML::Atom::Feed and other classes (Entry, Link and Content)
will create entities using Atom 0.3 namespaces. In order to create 1.0
feed and entry elements, you can set Version as a parameter, like:
$feed = XML::Atom::Feed->new(Version => 1.0);
$entry = XML::Atom::Entry->new(Version => 1.0);
Setting those Version to every element would be sometimes painful. In
that case, you can override the default version number by setting
$XML::Atom::DefaultVersion global variable to "1.0".
use XML::Atom;
$XML::Atom::DefaultVersion = "1.0";
my $feed = XML::Atom::Feed->new;
$feed->title("blah");
my $entry = XML::Atom::Entry->new;
$feed->add_entry($entry);
$feed->version; # 1.0
AUTHOR & COPYRIGHT
Please see the XML::Atom manpage for author, copyright, and license
information.
perl v5.14.1 2009-04-24 XML::Atom::Feed(3)
