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Diffstat (limited to 'lib/magpierss/rss_parse.inc')
| -rw-r--r-- | lib/magpierss/rss_parse.inc | 999 |
1 files changed, 0 insertions, 999 deletions
diff --git a/lib/magpierss/rss_parse.inc b/lib/magpierss/rss_parse.inc deleted file mode 100644 index 011048310..000000000 --- a/lib/magpierss/rss_parse.inc +++ /dev/null @@ -1,999 +0,0 @@ -<?php - -/** -* Project: MagpieRSS: a simple RSS integration tool -* File: rss_parse.inc - parse an RSS or Atom feed -* return as a simple object. -* -* Handles RSS 0.9x, RSS 2.0, RSS 1.0, Atom 0.3, and Atom 1.0 -* -* The lastest version of MagpieRSS can be obtained from: -* http://magpierss.sourceforge.net -* -* For questions, help, comments, discussion, etc., please join the -* Magpie mailing list: -* -* @author Kellan Elliott-McCrea <[email protected]> -* @version 0.8 -* @license GPL -* -*/ - -define('RSS', 'RSS'); -define('ATOM', 'Atom'); - -function _convert_entities ($string) { - # Source: http://www.w3.org/TR/REC-html40/sgml/entities.html - $html_entities = array( - " ", "¡", "¢", "£", "¤", "¥", "¦", "§", "¨", "©", - "ª", "«", "¬", "­", "®", "¯", "°", "±", "²", "³", - "´", "µ", "¶", "·", "¸", "¹", "º", "»", "¼", "½", - "¾", "¿", "À", "Á", "Â", "Ã", "Ä", "Å", "Æ", "Ç", - "È", "É", "Ê", "Ë", "Ì", "Í", "Î", "Ï", "Ð", "Ñ", - "Ò", "Ó", "Ô", "Õ", "Ö", "×", "Ø", "Ù", "Ú", "Û", - "Ü", "Ý", "Þ", "ß", "à", "á", "â", "ã", "ä", "å", - "æ", "ç", "è", "é", "ê", "ë", "ì", "í", "î", "ï", - "ð", "ñ", "ò", "ó", "ô", "õ", "ö", "÷", "ø", "ù", - "ú", "û", "ü", "ý", "þ", "ÿ",); - $numeric_entities = array( - " ", "¡", "¢", "£", "¤", "¥", "¦", "§", "¨", "©", - "ª", "«", "¬", "­", "®", "¯", "°", "±", "²", "³", - "´", "µ", "¶", "·", "¸", "¹", "º", "»", "¼", "½", - "¾", "¿", "À", "Á", "Â", "Ã", "Ä", "Å", "Æ", "Ç", - "È", "É", "Ê", "Ë", "Ì", "Í", "Î", "Ï", "Ð", "Ñ", - "Ò", "Ó", "Ô", "Õ", "Ö", "×", "Ø", "Ù", "Ú", "Û", - "Ü", "Ý", "Þ", "ß", "à", "á", "â", "ã", "ä", "å", - "æ", "ç", "è", "é", "ê", "ë", "ì", "í", "î", "ï", - "ð", "ñ", "ò", "ó", "ô", "õ", "ö", "÷", "ø", "ù", - "ú", "û", "ü", "ý", "þ", "ÿ"); - return str_replace($html_entities, $numeric_entities, $string); -} - - - -require_once (MAGPIE_DIR . 'rss_utils.inc'); - -/** -* Hybrid parser, and object, takes RSS as a string and returns a simple object. -* -* see: rss_fetch.inc for a simpler interface with integrated caching support -* -*/ -class MagpieRSS { - var $parser; - - var $current_item = array(); // item currently being parsed - var $items = array(); // collection of parsed items - var $channel = array(); // hash of channel fields - var $textinput = array(); - var $image = array(); - var $feed_type; - var $feed_version; - var $encoding = ''; // output encoding of parsed rss - - var $_source_encoding = ''; // only set if we have to parse xml prolog - - var $ERROR = ""; - var $WARNING = ""; - - // define some constants - - var $_ATOM_CONTENT_CONSTRUCTS = array( - 'content', 'summary', 'title', /* common */ - 'info', 'tagline', 'copyright', /* Atom 0.3 */ - 'rights', 'subtitle', /* Atom 1.0 */ - ); - var $_XHTML_CONTENT_CONSTRUCTS = array('body', 'div'); - var $_KNOWN_ENCODINGS = array('UTF-8', 'US-ASCII', 'ISO-8859-1'); - - // parser variables, useless if you're not a parser, treat as private - var $stack = array(); // parser stack - var $inchannel = false; - var $initem = false; - - var $incontent = array(); // non-empty if in namespaced XML content field - var $exclude_top = false; // true when Atom 1.0 type="xhtml" - - var $intextinput = false; - var $inimage = false; - var $current_namespace = false; - - /** - * Set up XML parser, parse source, and return populated RSS object.. - * - * @param string $source string containing the RSS to be parsed - * - * NOTE: Probably a good idea to leave the encoding options alone unless - * you know what you're doing as PHP's character set support is - * a little weird. - * - * NOTE: A lot of this is unnecessary but harmless with PHP5 - * - * - * @param string $output_encoding output the parsed RSS in this character - * set defaults to ISO-8859-1 as this is PHP's - * default. - * - * NOTE: might be changed to UTF-8 in future - * versions. - * - * @param string $input_encoding the character set of the incoming RSS source. - * Leave blank and Magpie will try to figure it - * out. - * - * - * @param bool $detect_encoding if false Magpie won't attempt to detect - * source encoding. (caveat emptor) - * - */ - function MagpieRSS ($source, $output_encoding='ISO-8859-1', - $input_encoding=null, $detect_encoding=true) - { - # if PHP xml isn't compiled in, die - # - if (!function_exists('xml_parser_create')) { - $this->error( "Failed to load PHP's XML Extension. " . - "http://www.php.net/manual/en/ref.xml.php", - E_USER_ERROR ); - } - - list($parser, $source) = $this->create_parser($source, - $output_encoding, $input_encoding, $detect_encoding); - - - if (!is_resource($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, - 'feed_start_element', 'feed_end_element' ); - - xml_set_character_data_handler( $this->parser, 'feed_cdata' ); - - $source=str_replace("<","<",$source); - $source=str_replace(">",">",$source); - $source=str_replace("&","&",$source); - - $status = xml_parse( $this->parser, $source ); - - # try to force convert everything to UTF-8 and parse again - # to salvage at least some data from the feed - if (! $status) { - $errorcode = xml_get_error_code( $this->parser ); - if ( $errorcode != XML_ERROR_NONE ) { - - xml_parser_free( $this->parser ); - - if (preg_match('/<\?xml.*?encoding="([^ ]+)".*?\?>/', - $source, $matches)) { - - $enc = $matches[1]; - } else { - $enc = mb_detect_encoding($string); - } - - # try fix XML, pass 1 - - $source = mb_convert_encoding($source, "UTF-8", $enc); - - list($parser, $source) = $this->create_parser($source, - $output_encoding, $input_encoding, $detect_encoding); - - $this->parser = $parser; - - xml_set_object( $this->parser, $this ); - xml_set_element_handler($this->parser, - 'feed_start_element', 'feed_end_element' ); - - xml_set_character_data_handler( $this->parser, 'feed_cdata' ); - - $status = xml_parse( $this->parser, $source); - - # try to fix XML, pass 2 - - if (! $status) { - $errorcode = xml_get_error_code( $this->parser ); - if ( $errorcode != XML_ERROR_NONE ) { - - $source = _convert_entities($source); - - list($parser, $source) = $this->create_parser($source, - $output_encoding, $input_encoding, $detect_encoding); - - $this->parser = $parser; - - xml_set_object( $this->parser, $this ); - xml_set_element_handler($this->parser, - 'feed_start_element', 'feed_end_element' ); - - xml_set_character_data_handler( $this->parser, 'feed_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 ); - - $this->normalize(); - } - - function feed_start_element($p, $element, &$attrs) { - $el = $element = strtolower($element); - $attrs = array_change_key_case($attrs, CASE_LOWER); - - // check for a namespace, and split if found - // Don't munge content tags - if ( empty($this->incontent) ) { - $ns = false; - if ( strpos( $element, ':' ) ) { - list($ns, $el) = split( ':', $element, 2); - } - if ( $ns and $ns != 'rdf' ) { - $this->current_namespace = $ns; - } - } - - # if feed type isn't set, then this is first element of feed - # identify feed from root element - # - if (!isset($this->feed_type) ) { - if ( $el == 'rdf' ) { - $this->feed_type = RSS; - $this->feed_version = '1.0'; - } - elseif ( $el == 'rss' ) { - $this->feed_type = RSS; - $this->feed_version = $attrs['version']; - } - elseif ( $el == 'feed' ) { - $this->feed_type = ATOM; - if ($attrs['xmlns'] == 'http://www.w3.org/2005/Atom') { // Atom 1.0 - $this->feed_version = '1.0'; - } - else { // Atom 0.3, probably. - $this->feed_version = $attrs['version']; - } - $this->inchannel = true; - } - return; - } - - // if we're inside a namespaced content construct, treat tags as text - if ( !empty($this->incontent) ) - { - if ((count($this->incontent) > 1) or !$this->exclude_top) { - // if tags are inlined, then flatten - $attrs_str = join(' ', - array_map('map_attrs', - array_keys($attrs), - array_values($attrs) ) - ); - - if (strlen($attrs_str) > 0) { $attrs_str = ' '.$attrs_str; } - - $this->append_content( "<{$element}{$attrs_str}>" ); - } - array_push($this->incontent, $el); // stack for parsing content XML - } - - elseif ( $el == 'channel' ) { - $this->inchannel = true; - } - - elseif ($el == 'item' or $el == 'entry' ) - { - $this->initem = true; - if ( isset($attrs['rdf:about']) ) { - $this->current_item['about'] = $attrs['rdf:about']; - } - } - - // if we're in the default namespace of an RSS feed, - // record textinput or image fields - elseif ( - $this->feed_type == RSS and - $this->current_namespace == '' and - $el == 'textinput' ) - { - $this->intextinput = true; - } - - elseif ( - $this->feed_type == RSS and - $this->current_namespace == '' and - $el == 'image' ) - { - $this->inimage = true; - } - - // set stack[0] to current element - else { - // Atom support many links per containing element. - // Magpie treats link elements of type rel='alternate' - // as being equivalent to RSS's simple link element. - - $atom_link = false; - if ($this->feed_type == ATOM and $el == 'link') { - $atom_link = true; - if (isset($attrs['rel']) and $attrs['rel'] != 'alternate') { - $el = $el . "_" . $attrs['rel']; // pseudo-element names for Atom link elements - } - } - # handle atom content constructs - elseif ( $this->feed_type == ATOM and in_array($el, $this->_ATOM_CONTENT_CONSTRUCTS) ) - { - // avoid clashing w/ RSS mod_content - if ($el == 'content' ) { - $el = 'atom_content'; - } - - // assume that everything accepts namespaced XML - // (that will pass through some non-validating feeds; - // but so what? this isn't a validating parser) - $this->incontent = array(); - array_push($this->incontent, $el); // start a stack - - if ( isset($attrs['type']) and trim(strtolower($attrs['type']))=='xhtml') { - $this->exclude_top = true; - } else { - $this->exclude_top = false; - } - } - # Handle inline XHTML body elements --CWJ - elseif (($this->current_namespace=='xhtml' or - (isset($attrs['xmlns']) and $attrs['xmlns'] == 'http://www.w3.org/1999/xhtml')) - and in_array($el, $this->_XHTML_CONTENT_CONSTRUCTS) ) - { - $this->current_namespace = 'xhtml'; - $this->incontent = array(); - array_push($this->incontent, $el); // start a stack - $this->exclude_top = false; - } - - array_unshift($this->stack, $el); - $elpath = join('_', array_reverse($this->stack)); - - $n = $this->element_count($elpath); - $this->element_count($elpath, $n+1); - - if ($n > 0) { - array_shift($this->stack); - array_unshift($this->stack, $el.'#'.($n+1)); - $elpath = join('_', array_reverse($this->stack)); - } - - // this makes the baby Jesus cry, but we can't do it in normalize() - // because we've made the element name for Atom links unpredictable - // by tacking on the relation to the end. -CWJ - if ($atom_link and isset($attrs['href'])) { - $this->append($elpath, $attrs['href']); - } - - // add attributes - if (count($attrs) > 0) { - $this->append($elpath.'@', join(',', array_keys($attrs))); - foreach ($attrs as $attr => $value) { - $this->append($elpath.'@'.$attr, $value); - } - } - } - } - - - - function feed_cdata ($p, $text) { - - if ($this->incontent) { - $this->append_content( $text ); - } - else { - $current_el = join('_', array_reverse($this->stack)); - $this->append($current_el, $text); - } - } - - function feed_end_element ($p, $el) { - $el = strtolower($el); - - if ( $this->incontent ) { - $opener = array_pop($this->incontent); - - // Don't get bamboozled by namespace voodoo - if (strpos($el, ':')) { list($ns, $closer) = split(':', $el); } - else { $ns = false; $closer = $el; } - - // Don't get bamboozled by our munging of <atom:content>, either - if ($this->feed_type == ATOM and $closer == 'content') { - $closer = 'atom_content'; - } - - // balance tags properly - // note: i don't think this is actually neccessary - if ($opener != $closer) { - array_push($this->incontent, $opener); - $this->append_content("<$el />"); - } elseif ($this->incontent) { // are we in the content construct still? - if ((count($this->incontent) > 1) or !$this->exclude_top) { - $this->append_content("</$el>"); - } - } else { // shift the opening of the content construct off the normal stack - array_shift( $this->stack ); - } - } - elseif ( $el == 'item' or $el == 'entry' ) - { - $this->items[] = $this->current_item; - $this->current_item = array(); - $this->initem = false; - - $this->current_category = 0; - } - elseif ($this->feed_type == RSS and $this->current_namespace == '' and $el == 'textinput' ) - { - $this->intextinput = false; - } - elseif ($this->feed_type == RSS and $this->current_namespace == '' and $el == 'image' ) - { - $this->inimage = false; - } - elseif ($el == 'channel' or $el == 'feed' ) - { - $this->inchannel = false; - } - else { - array_shift( $this->stack ); - } - - if ( !$this->incontent ) { // Don't munge the namespace after finishing with elements in namespaced content constructs -CWJ - $this->current_namespace = false; - } - } - - function concat (&$str1, $str2="") { - if (!isset($str1) ) { - $str1=""; - } - $str1 .= $str2; - } - - function append_content($text) { - if ( $this->initem ) { - if ($this->current_namespace) { - $this->concat( $this->current_item[$this->current_namespace][ reset($this->incontent) ], $text ); - } else { - $this->concat( $this->current_item[ reset($this->incontent) ], $text ); - } - } - elseif ( $this->inchannel ) { - if ($this->current_namespace) { - $this->concat( $this->channel[$this->current_namespace][ reset($this->incontent) ], $text ); - } else { - $this->concat( $this->channel[ reset($this->incontent) ], $text ); - } - } - } - - // smart append - field and namespace aware - function append($el, $text) { - if (!$el) { - return; - } - if ( $this->current_namespace ) - { - if ( $this->initem ) { - $this->concat( - $this->current_item[ $this->current_namespace ][ $el ], $text); - } - elseif ($this->inchannel) { - $this->concat( - $this->channel[ $this->current_namespace][ $el ], $text ); - } - elseif ($this->intextinput) { - $this->concat( - $this->textinput[ $this->current_namespace][ $el ], $text ); - } - elseif ($this->inimage) { - $this->concat( - $this->image[ $this->current_namespace ][ $el ], $text ); - } - } - else { - if ( $this->initem ) { - $this->concat( - $this->current_item[ $el ], $text); - } - elseif ($this->intextinput) { - $this->concat( - $this->textinput[ $el ], $text ); - } - elseif ($this->inimage) { - $this->concat( - $this->image[ $el ], $text ); - } - elseif ($this->inchannel) { - $this->concat( - $this->channel[ $el ], $text ); - } - - } - } - - // smart count - field and namespace aware - function element_count ($el, $set = NULL) { - if (!$el) { - return; - } - if ( $this->current_namespace ) - { - if ( $this->initem ) { - if (!is_null($set)) { $this->current_item[ $this->current_namespace ][ $el.'#' ] = $set; } - $ret = (isset($this->current_item[ $this->current_namespace ][ $el.'#' ]) ? - $this->current_item[ $this->current_namespace ][ $el.'#' ] : 0); - } - elseif ($this->inchannel) { - if (!is_null($set)) { $this->channel[ $this->current_namespace ][ $el.'#' ] = $set; } - $ret = (isset($this->channel[ $this->current_namespace][ $el.'#' ]) ? - $this->channel[ $this->current_namespace][ $el.'#' ] : 0); - } - } - else { - if ( $this->initem ) { - if (!is_null($set)) { $this->current_item[ $el.'#' ] = $set; } - $ret = (isset($this->current_item[ $el.'#' ]) ? - $this->current_item[ $el.'#' ] : 0); - } - elseif ($this->inchannel) { - if (!is_null($set)) {$this->channel[ $el.'#' ] = $set; } - $ret = (isset($this->channel[ $el.'#' ]) ? - $this->channel[ $el.'#' ] : 0); - } - } - return $ret; - } - - function normalize_enclosure (&$source, $from, &$dest, $to, $i) { - $id_from = $this->element_id($from, $i); - $id_to = $this->element_id($to, $i); - if (isset($source["{$id_from}@"])) { - foreach (explode(',', $source["{$id_from}@"]) as $attr) { - if ($from=='link_enclosure' and $attr=='href') { // from Atom - $dest["{$id_to}@url"] = $source["{$id_from}@{$attr}"]; - $dest["{$id_to}"] = $source["{$id_from}@{$attr}"]; - } - elseif ($from=='enclosure' and $attr=='url') { // from RSS - $dest["{$id_to}@href"] = $source["{$id_from}@{$attr}"]; - $dest["{$id_to}"] = $source["{$id_from}@{$attr}"]; - } - else { - $dest["{$id_to}@{$attr}"] = $source["{$id_from}@{$attr}"]; - } - } - } - } - - function normalize_atom_person (&$source, $person, &$dest, $to, $i) { - $id = $this->element_id($person, $i); - $id_to = $this->element_id($to, $i); - - // Atom 0.3 <=> Atom 1.0 - if ($this->feed_version >= 1.0) { $used = 'uri'; $norm = 'url'; } - else { $used = 'url'; $norm = 'uri'; } - - if (isset($source["{$id}_{$used}"])) { - $dest["{$id_to}_{$norm}"] = $source["{$id}_{$used}"]; - } - - // Atom to RSS 2.0 and Dublin Core - // RSS 2.0 person strings should be valid e-mail addresses if possible. - if (isset($source["{$id}_email"])) { - $rss_author = $source["{$id}_email"]; - } - if (isset($source["{$id}_name"])) { - $rss_author = $source["{$id}_name"] - . (isset($rss_author) ? " <$rss_author>" : ''); - } - if (isset($rss_author)) { - $source[$id] = $rss_author; // goes to top-level author or contributor - $dest[$id_to] = $rss_author; // goes to dc:creator or dc:contributor - } - } - - // Normalize Atom 1.0 and RSS 2.0 categories to Dublin Core... - function normalize_category (&$source, $from, &$dest, $to, $i) { - $cat_id = $this->element_id($from, $i); - $dc_id = $this->element_id($to, $i); - - // first normalize category elements: Atom 1.0 <=> RSS 2.0 - if ( isset($source["{$cat_id}@term"]) ) { // category identifier - $source[$cat_id] = $source["{$cat_id}@term"]; - } elseif ( $this->feed_type == RSS ) { - $source["{$cat_id}@term"] = $source[$cat_id]; - } - - if ( isset($source["{$cat_id}@scheme"]) ) { // URI to taxonomy - $source["{$cat_id}@domain"] = $source["{$cat_id}@scheme"]; - } elseif ( isset($source["{$cat_id}@domain"]) ) { - $source["{$cat_id}@scheme"] = $source["{$cat_id}@domain"]; - } - - // Now put the identifier into dc:subject - $dest[$dc_id] = $source[$cat_id]; - } - - // ... or vice versa - function normalize_dc_subject (&$source, $from, &$dest, $to, $i) { - $dc_id = $this->element_id($from, $i); - $cat_id = $this->element_id($to, $i); - - $dest[$cat_id] = $source[$dc_id]; // RSS 2.0 - $dest["{$cat_id}@term"] = $source[$dc_id]; // Atom 1.0 - } - - // simplify the logic for normalize(). Makes sure that count of elements and - // each of multiple elements is normalized properly. If you need to mess - // with things like attributes or change formats or the like, pass it a - // callback to handle each element. - function normalize_element (&$source, $from, &$dest, $to, $via = NULL) { - if (isset($source[$from]) or isset($source["{$from}#"])) { - if (isset($source["{$from}#"])) { - $n = $source["{$from}#"]; - $dest["{$to}#"] = $source["{$from}#"]; - } - else { $n = 1; } - - for ($i = 1; $i <= $n; $i++) { - if (isset($via)) { // custom callback for ninja attacks - $this->{$via}($source, $from, $dest, $to, $i); - } - else { // just make it the same - $from_id = $this->element_id($from, $i); - $to_id = $this->element_id($to, $i); - $dest[$to_id] = $source[$from_id]; - } - } - } - } - - function normalize () { - // if atom populate rss fields and normalize 0.3 and 1.0 feeds - if ( $this->is_atom() ) { - // Atom 1.0 elements <=> Atom 0.3 elements (Thanks, o brilliant wordsmiths of the Atom 1.0 standard!) - if ($this->feed_version < 1.0) { - $this->normalize_element($this->channel, 'tagline', $this->channel, 'subtitle'); - $this->normalize_element($this->channel, 'copyright', $this->channel, 'rights'); - $this->normalize_element($this->channel, 'modified', $this->channel, 'updated'); - } else { - $this->normalize_element($this->channel, 'subtitle', $this->channel, 'tagline'); - $this->normalize_element($this->channel, 'rights', $this->channel, 'copyright'); - $this->normalize_element($this->channel, 'updated', $this->channel, 'modified'); - } - $this->normalize_element($this->channel, 'author', $this->channel['dc'], 'creator', 'normalize_atom_person'); - $this->normalize_element($this->channel, 'contributor', $this->channel['dc'], 'contributor', 'normalize_atom_person'); - - // Atom elements to RSS elements - $this->normalize_element($this->channel, 'subtitle', $this->channel, 'description'); - - if ( isset($this->channel['logo']) ) { - $this->normalize_element($this->channel, 'logo', $this->image, 'url'); - $this->normalize_element($this->channel, 'link', $this->image, 'link'); - $this->normalize_element($this->channel, 'title', $this->image, 'title'); - } - - for ( $i = 0; $i < count($this->items); $i++) { - $item = $this->items[$i]; - - // Atom 1.0 elements <=> Atom 0.3 elements - if ($this->feed_version < 1.0) { - $this->normalize_element($item, 'modified', $item, 'updated'); - $this->normalize_element($item, 'issued', $item, 'published'); - } else { - $this->normalize_element($item, 'updated', $item, 'modified'); - $this->normalize_element($item, 'published', $item, 'issued'); - } - - // "If an atom:entry element does not contain - // atom:author elements, then the atom:author elements - // of the contained atom:source element are considered - // to apply. In an Atom Feed Document, the atom:author - // elements of the containing atom:feed element are - // considered to apply to the entry if there are no - // atom:author elements in the locations described - // above." <http://atompub.org/2005/08/17/draft-ietf-atompub-format-11.html#rfc.section.4.2.1> - if (!isset($item["author#"])) { - if (isset($item["source_author#"])) { // from aggregation source - $source = $item; - $author = "source_author"; - } elseif (isset($this->channel["author#"])) { // from containing feed - $source = $this->channel; - $author = "author"; - } - - $item["author#"] = $source["{$author}#"]; - for ($au = 1; $au <= $item["author#"]; $au++) { - $id_to = $this->element_id('author', $au); - $id_from = $this->element_id($author, $au); - - $item[$id_to] = $source[$id_from]; - foreach (array('name', 'email', 'uri', 'url') as $what) { - if (isset($source["{$id_from}_{$what}"])) { - $item["{$id_to}_{$what}"] = $source["{$id_from}_{$what}"]; - } - } - } - } - - // Atom elements to RSS elements - $this->normalize_element($item, 'author', $item['dc'], 'creator', 'normalize_atom_person'); - $this->normalize_element($item, 'contributor', $item['dc'], 'contributor', 'normalize_atom_person'); - $this->normalize_element($item, 'summary', $item, 'description'); - $this->normalize_element($item, 'atom_content', $item['content'], 'encoded'); - $this->normalize_element($item, 'link_enclosure', $item, 'enclosure', 'normalize_enclosure'); - - // Categories - if ( isset($item['category#']) ) { // Atom 1.0 categories to dc:subject and RSS 2.0 categories - $this->normalize_element($item, 'category', $item['dc'], 'subject', 'normalize_category'); - } - elseif ( isset($item['dc']['subject#']) ) { // dc:subject to Atom 1.0 and RSS 2.0 categories - $this->normalize_element($item['dc'], 'subject', $item, 'category', 'normalize_dc_subject'); - } - - // Normalized item timestamp - $atom_date = (isset($item['published']) ) ? $item['published'] : $item['updated']; - if ( $atom_date ) { - $epoch = @parse_w3cdtf($atom_date); - if ($epoch and $epoch > 0) { - $item['date_timestamp'] = $epoch; - } - } - - $this->items[$i] = $item; - } - } - elseif ( $this->is_rss() ) { - // RSS elements to Atom elements - $this->normalize_element($this->channel, 'description', $this->channel, 'tagline'); // Atom 0.3 - $this->normalize_element($this->channel, 'description', $this->channel, 'subtitle'); // Atom 1.0 (yay wordsmithing!) - $this->normalize_element($this->image, 'url', $this->channel, 'logo'); - - for ( $i = 0; $i < count($this->items); $i++) { - $item = $this->items[$i]; - - // RSS elements to Atom elements - $this->normalize_element($item, 'description', $item, 'summary'); - $this->normalize_element($item['content'], 'encoded', $item, 'atom_content'); - $this->normalize_element($item, 'enclosure', $item, 'link_enclosure', 'normalize_enclosure'); - - // Categories - if ( isset($item['category#']) ) { // RSS 2.0 categories to dc:subject and Atom 1.0 categories - $this->normalize_element($item, 'category', $item['dc'], 'subject', 'normalize_category'); - } - elseif ( isset($item['dc']['subject#']) ) { // dc:subject to Atom 1.0 and RSS 2.0 categories - $this->normalize_element($item['dc'], 'subject', $item, 'category', 'normalize_dc_subject'); - } - - // Normalized item timestamp - if ( $this->is_rss() == '1.0' and isset($item['dc']['date']) ) { - $epoch = @parse_w3cdtf($item['dc']['date']); - if ($epoch and $epoch > 0) { - $item['date_timestamp'] = $epoch; - } - } - elseif ( isset($item['pubdate']) ) { - $epoch = @strtotime($item['pubdate']); - if ($epoch > 0) { - $item['date_timestamp'] = $epoch; - } - } - - $this->items[$i] = $item; - } - } - } - - - function is_rss () { - if ( $this->feed_type == RSS ) { - return $this->feed_version; - } - else { - return false; - } - } - - function is_atom() { - if ( $this->feed_type == ATOM ) { - return $this->feed_version; - } - else { - return false; - } - } - - /** - * return XML parser, and possibly re-encoded source - * - */ - function create_parser($source, $out_enc, $in_enc, $detect) { - if ( substr(phpversion(),0,1) == 5) { - $parser = $this->php5_create_parser($in_enc, $detect); - } - else { - list($parser, $source) = $this->php4_create_parser($source, $in_enc, $detect); - } - if ($out_enc) { - $this->encoding = $out_enc; - xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, $out_enc); - } - - return array($parser, $source); - } - - /** - * Instantiate an XML parser under PHP5 - * - * PHP5 will do a fine job of detecting input encoding - * if passed an empty string as the encoding. - * - * All hail libxml2! - * - */ - function php5_create_parser($in_enc, $detect) { - // by default php5 does a fine job of detecting input encodings - if(!$detect && $in_enc) { - return xml_parser_create($in_enc); - } - else { - return xml_parser_create(''); - } - } - - /** - * Instaniate an XML parser under PHP4 - * - * Unfortunately PHP4's support for character encodings - * and especially XML and character encodings sucks. As - * long as the documents you parse only contain characters - * from the ISO-8859-1 character set (a superset of ASCII, - * and a subset of UTF-8) you're fine. However once you - * step out of that comfy little world things get mad, bad, - * and dangerous to know. - * - * The following code is based on SJM's work with FoF - * @see http://minutillo.com/steve/weblog/2004/6/17/php-xml-and-character-encodings-a-tale-of-sadness-rage-and-data-loss - * - */ - function php4_create_parser($source, $in_enc, $detect) { - if ( !$detect ) { - return array(xml_parser_create($in_enc), $source); - } - - if (!$in_enc) { - if (preg_match('/<?xml.*encoding=[\'"](.*?)[\'"].*?>/m', $source, $m)) { - $in_enc = strtoupper($m[1]); - $this->source_encoding = $in_enc; - } - else { - $in_enc = 'UTF-8'; - } - } - - if ($this->known_encoding($in_enc)) { - return array(xml_parser_create($in_enc), $source); - } - - // the dectected encoding is not one of the simple encodings PHP knows - - // attempt to use the iconv extension to - // cast the XML to a known encoding - // @see http://php.net/iconv - - if (function_exists('iconv')) { - $encoded_source = iconv($in_enc,'UTF-8', $source); - if ($encoded_source) { - return array(xml_parser_create('UTF-8'), $encoded_source); - } - } - - // iconv didn't work, try mb_convert_encoding - // @see http://php.net/mbstring - if(function_exists('mb_convert_encoding')) { - $encoded_source = mb_convert_encoding($source, 'UTF-8', $in_enc ); - if ($encoded_source) { - return array(xml_parser_create('UTF-8'), $encoded_source); - } - } - - // else - $this->error("Feed is in an unsupported character encoding. ($in_enc) " . - "You may see strange artifacts, and mangled characters.", - E_USER_NOTICE); - - return array(xml_parser_create(), $source); - } - - function known_encoding($enc) { - $enc = strtoupper($enc); - if ( in_array($enc, $this->_KNOWN_ENCODINGS) ) { - return $enc; - } - else { - return false; - } - } - - function error ($errormsg, $lvl=E_USER_WARNING) { - // append PHP's error message if track_errors enabled - if ( isset($php_errormsg) ) { - $errormsg .= " ($php_errormsg)"; - } - if ( MAGPIE_DEBUG ) { - trigger_error( $errormsg, $lvl); - } - else { - error_log( $errormsg, 0); - } - - $notices = E_USER_NOTICE|E_NOTICE; - if ( $lvl&$notices ) { - $this->WARNING = $errormsg; - } else { - $this->ERROR = $errormsg; - } - } - - // magic ID function for multiple elemenets. - // can be called as static MagpieRSS::element_id() - function element_id ($el, $counter) { - return $el . (($counter > 1) ? '#'.$counter : ''); - } -} // end class RSS - -function map_attrs($k, $v) { - return "$k=\"$v\""; -} - -// patch to support medieval versions of PHP4.1.x, -// courtesy, Ryan Currie, [email protected] - -if (!function_exists('array_change_key_case')) { - define("CASE_UPPER",1); - define("CASE_LOWER",0); - - - function array_change_key_case($array,$case=CASE_LOWER) { - if ($case==CASE_LOWER) $cmd='strtolower'; - elseif ($case==CASE_UPPER) $cmd='strtoupper'; - foreach($array as $key=>$value) { - $output[$cmd($key)]=$value; - } - return $output; - } - -} - -?> |