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first addition of extra rss files needed by rss_client block. templib…
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… functionality should be moved to rsslib.php if Eloy is OK with that
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dhawes committed Dec 17, 2004
1 parent 91b4c5e commit 0eb3582
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270 changes: 270 additions & 0 deletions rss/class.Atom.php
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<?php
/*
* Project: phAnTOM: a simple Atom parsing class
* File: atom_parse.php includes code for parsing
* Atom feeds, and returning an Atom object
* Author: Jeremy Ashcraft <[email protected]>
* Version: 0.1
* License: GPL
*
* The lastest version of phAnTOM can be obtained from:
* http://www.simplog.org
*
* For questions, help, comments, discussion, etc., please join the
* Simplog Atom mailing list:
* [email protected]
*
* This code is based on the MagpieRSS parser v0.52 written
* by Kellan Elliott-McCrea <[email protected]> and released under the GPL
*/


/*
* The lastest Atom feed spec is at http://diveintomark.org/public/2003/08/atom02spec.txt
*
*
* RSS/Atom validators are readily available on the web at:
* http://feeds.archive.org/validator/
*
*/

class Atom {
/*
* Useage Example:
*
* $xml = "<?xml version="1.0"......
*
* $atom = new atom( $xml );
*
* // print feed title
* print $atom->feed['title'];
*
* // print the title of each entry
* foreach ($atom->entries as $entry ) {
* print $entry[title];
* }
*
*/

var $parser;

var $current_item = array(); // item currently being parsed
var $entries = array(); // collection of parsed items
var $feed = array(); // hash of channel fields

var $parent_field = array('RDF');
var $author = array();
var $contributor = array();
var $current_field = '';
var $current_namespace = false;

var $ERROR = '';

/*======================================================================*\
Function: MagpieRSS
Purpose: Constructor, sets up XML parser,parses source,
and populates object..
Input: String containing the RSS to be parsed
\*======================================================================*/
function Atom ($source) {

# if PHP xml isn't compiled in, die
#
if (!function_exists('xml_parser_create')) {
$this->error( 'Failed to load PHP\'s XML Extension. ' .
'http://www.php.net/manual/en/ref.xml.php',
E_USER_ERROR );
}

$parser = @xml_parser_create();

if (!is_resource($parser))
{
$this->error( 'Failed to create an instance of PHP\'s XML parser. ' .
'http://www.php.net/manual/en/ref.xml.php',
E_USER_ERROR );
}


$this->parser = $parser;

# pass in parser, and a reference to this object
# setup handlers
#
xml_set_object( $this->parser, $this );
xml_set_element_handler($this->parser, 'start_element', 'end_element');
xml_set_character_data_handler( $this->parser, 'cdata' );


$status = xml_parse( $this->parser, $source );

if (! $status ) {
$errorcode = xml_get_error_code( $this->parser );
if ( $errorcode != XML_ERROR_NONE ) {
$xml_error = xml_error_string( $errorcode );
$error_line = xml_get_current_line_number($this->parser);
$error_col = xml_get_current_column_number($this->parser);
$errormsg = $xml_error .' at line '. $error_line .', column '. $error_col;

$this->error( $errormsg );
}
}

xml_parser_free( $this->parser );
}

function start_element ($p, $element, &$attrs) {
$element = strtolower( $element );
# check for a namespace, and split if found
#
$namespace = false;
if ( strpos( $element, ':' ) ) {
list($namespace, $element) = split( ':', $element, 2);
}
$this->current_field = $element;
if ( $namespace ) {
$this->current_namespace = $namespace;
}

if ( $element == 'feed' ) {
array_unshift( $this->parent_field, 'feed' );
} else if ( $element == 'items' ) {
array_unshift( $this->parent_field, 'items' );
} else if ( $element == 'entry' ) {
array_unshift( $this->parent_field, 'entry' );
} else if ( $element == 'author' ) {
array_unshift( $this->parent_field, 'author' );
} else if ( $element == 'contributor' ) {
array_unshift( $this->parent_field, 'contributor' );
}
}

function end_element ($p, $element) {
$element = strtolower($element);

if ( $element == 'entry' ) {
$this->entries[] = $this->current_item;
$this->current_item = array();
array_shift( $this->parent_field );
} else if ( $element == 'feed' or $element == 'items' or
$element == 'author' or $element == 'contributor') {
array_shift( $this->parent_field );
}

$this->current_field = '';
$this->current_namespace = false;
}

function cdata ($p, $text) {
# skip item, channel, items first time we see them
#
if ( $this->parent_field[0] == $this->current_field or
! $this->current_field ) {
return;
} else if ( $this->parent_field[0] == 'feed') {
if ( $this->current_namespace ) {
$this->append(
$this->feed[ $this->current_namespace ][ $this->current_field ],
$text);
} else {
$this->append($this->feed[ $this->current_field ], $text);
}

} else if ( $this->parent_field[0] == 'entry' ) {
if ( $this->current_namespace ) {
$this->append(
$this->current_item[ $this->current_namespace ][$this->current_field ],
$text);
} else {
$this->append(
$this->current_item[ $this->current_field ],
$text );
}
} else if ( $this->parent_field[0] == 'author' ) {
if ( $this->current_namespace ) {
$this->append(
$this->author[ $this->current_namespace ][ $this->current_field ],
$text );
} else {
$this->append(
$this->author[ $this->current_field ],
$text );
}
} else if ( $this->parent_field[0] == 'contributor' ) {
if ( $this->current_namespace ) {
$this->append(
$this->contributor[ $this->current_namespace ][ $this->current_field ],
$text );
} else {
$this->append(
$this->contributor[ $this->current_field ],
$text );
}
}
}

function append (&$str1, $str2='') {
if (!isset($str1) ) {
$str1='';
}
$str1 .= $str2;
}

function error ($errormsg, $lvl=E_USER_WARNING) {
// append PHP's error message if track_errors enabled
if ( $php_errormsg ) {
$errormsg .= ' ('. $php_errormsg .')';
}
$this->ERROR = $errormsg;
if ( ATOM_DEBUG ) {
trigger_error( $errormsg, $lvl);
} else {
error_log( $errormsg, 0);
}
}


/*======================================================================*\
EVERYTHING BELOW HERE IS FOR DEBUGGING PURPOSES
\*======================================================================*/
function show_list () {
print '<ol>'."\n";
foreach ($this->entries as $item) {
print '<li>'. $this->show_entry( $item );
}
print '</ol>';
}

function show_feed () {
print 'feed:<br />';
print '<ul>';
while ( list($key, $value) = each( $this->feed ) ) {
print '<li> '. $key .': '. $value;
}
print '</ul>';
}

function show_entry ($item) {
print 'entry: '. $item[title];
print '<ul>';
while ( list($key, $value) = each($item) ) {
if ( is_array($value) ) {
print '<br /><strong>'. $key .'</strong>';
print '<ul>';
while ( list( $ns_key, $ns_value) = each( $value ) ) {
print '<li>'. $ns_key .': '. $ns_value;
}
print '</ul>';
} else {
print '<li> '. $key .': '. $value;
}
}
print '</ul>';
}

/*======================================================================*\
END DEBUGGING FUNCTIONS
\*======================================================================*/

} # end class Atom
?>
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