parser_common_syndication.module in FeedAPI 5
Same filename and directory in other branches
Parse the incoming URL with SimpleXML then provide a data structure of the feed. Requires PHP5 because of SimpleXML.
File
parser_common_syndication/parser_common_syndication.moduleView source
<?php
/**
* @file
* Parse the incoming URL with SimpleXML then provide a data structure of the feed.
* Requires PHP5 because of SimpleXML.
*/
/**
* Implementation of hook_help().
*/
function parser_common_syndication_help($section) {
switch ($section) {
case 'admin/modules#description':
return t('Provide a common syndication parser for FeedAPI-compatible modules. Only PHP5-compatible. Rather fast.');
case 'feedapi/full_name':
return t('Parser Common Syndication - only for PHP5');
}
}
/**
* Implementation of hook_feedapi_feed().
*/
function parser_common_syndication_feedapi_feed($op) {
$args = func_get_args();
switch ($op) {
case 'type':
return array(
"XML feed",
);
case 'compatible':
if (!function_exists('simplexml_load_string')) {
return FALSE;
}
$url = $args[1]->url;
$downloaded_string = _parser_common_syndication_download($url, $op);
if (is_object($downloaded_string)) {
return array_shift(parser_common_syndication_feedapi_feed('type'));
}
if (!defined('LIBXML_VERSION') || version_compare(phpversion(), '5.1.0', '<')) {
@($xml = simplexml_load_string($downloaded_string, NULL));
}
else {
@($xml = simplexml_load_string($downloaded_string, NULL, LIBXML_NOERROR | LIBXML_NOWARNING));
}
if (_parser_common_syndication_feed_format_detect($xml) != FALSE) {
// The parser is compatible. Then has to parse the feed and cache it. Because in the download
// part, the feed etag data be already saved perhaps (depends on the webserver).
$parsed_feed = _parser_common_syndication_feedapi_parse($xml);
if (is_object($parsed_feed) && $parsed_feed->from_cache !== TRUE) {
_parser_common_syndication_cache_set($url, $parsed_feed);
}
// We don't have to choose between the types, because this module is only able to parse one.
return array_shift(parser_common_syndication_feedapi_feed('type'));
}
return FALSE;
case 'parse':
$feed = is_object($args[1]) ? $args[1] : FALSE;
$parsed_feed = _parser_common_syndication_feedapi_parse($feed);
if (is_object($parsed_feed) && $parsed_feed->from_cache !== TRUE) {
_parser_common_syndication_cache_set($feed->url, $parsed_feed);
}
return $parsed_feed;
}
}
/**
* Implementaton of hook_requirements().
*/
function parser_common_syndication_requirements() {
$t = get_t();
if (!version_compare(5, PHP_VERSION, '<=') || !function_exists('simplexml_load_file')) {
return array(
'Parser Common Syndication' => array(
'title' => t('SimpleXML library.'),
'description' => t('A fast XML parsing library. (From PHP5)'),
'severity' => REQUIREMENT_ERROR,
'value' => $t('Missing'),
),
);
}
return array(
'Parser Common Syndication' => array(
'title' => t('SimpleXML library.'),
'description' => t('A fast XML parsing library. (From PHP5)'),
'severity' => REQUIREMENT_OK,
'value' => $t('Available'),
),
);
}
/**
* Parse the feed into a data structure.
*
* @param $feed
* The feed object (contains the URL or the parsed XML structure)
* @return stdClass
* The structured datas extracted from the feed
*/
function _parser_common_syndication_feedapi_parse($feed) {
if (is_a($feed, 'SimpleXMLElement')) {
$xml = $feed;
}
else {
$downloaded_string = _parser_common_syndication_download($feed->url, 'parse');
if ($downloaded_string === FALSE || is_object($downloaded_string)) {
return $downloaded_string;
}
if (!defined('LIBXML_VERSION') || version_compare(phpversion(), '5.1.0', '<')) {
@($xml = simplexml_load_string($downloaded_string, NULL));
}
else {
@($xml = simplexml_load_string($downloaded_string, NULL, LIBXML_NOERROR | LIBXML_NOWARNING));
}
// Got a malformed XML.
if ($xml === FALSE || $xml == NULL) {
return FALSE;
}
}
$feed_type = _parser_common_syndication_feed_format_detect($xml);
if ($feed_type == "atom1.0") {
return _parser_common_syndication_atom10_parse($xml);
}
if ($feed_type == "RSS2.0" || $feed_type == "RSS0.91" || $feed_type == "RSS0.92") {
return _parser_common_syndication_RSS20_parse($xml);
}
if ($feed_type == "RDF") {
return _parser_common_syndication_RDF10_parse($xml);
}
return FALSE;
}
/**
* Get the cached version of the <var>$url</var>
*/
function _parser_common_syndication_cache_get($url) {
$cache_file = _parser_common_syndication_sanitize_cache() . '/' . md5($url);
if (file_exists($cache_file)) {
$file_content = file_get_contents($cache_file);
return unserialize($file_content);
}
return FALSE;
}
/**
* Store the parsed feed into the cache
*/
function _parser_common_syndication_cache_set($url, $parsed_feed) {
$cache_file = _parser_common_syndication_sanitize_cache() . '/' . md5($url);
$cache_fp = fopen($cache_file, 'w');
fwrite($cache_fp, serialize($parsed_feed));
fclose($cache_fp);
}
/**
* Get the content from the given URL.
*
* @param $url
* A valid URL (not only web URLs).
* @param $username
* If the URL use authentication, here you can supply the username for this.
* @param $password
* If the URL use authentication, here you can supply the password for this.
* @return
* The data pulled from the URL or FALSE if the feed does not need refresh.
*/
function _parser_common_syndication_feedapi_get($url, $username = NULL, $password = NULL) {
$method = 'GET';
$follow = 3;
$data = NULL;
// Only download and parse data if really needs refresh. Based on Last-Modified and If-Modified-Since
$headers = array();
$validate = db_fetch_array(db_query("SELECT etag, last_modified FROM {parser_common_syndication} WHERE url = '%s'", $url));
if (!empty($validate['etag'])) {
$headers['If-None-Match'] = $validate['etag'];
}
if (!empty($validate['last_modified'])) {
$headers['If-Modified-Since'] = $validate['last_modified'];
}
if (!empty($username)) {
$headers['Authorization'] = 'Basic ' . base64_encode("{$username}:{$password}");
}
$result = drupal_http_request($url, $headers, $method, $data, $follow);
// In this case return the cached data
if ($result->code == 304) {
$cached_data = _parser_common_syndication_cache_get($url);
if (is_object($cached_data)) {
$cached_data->from_cache = TRUE;
return $cached_data;
}
else {
// It's a tragedy, this file has to be exist and contains good data. In this case, repeat the stuff without cache
db_query("DELETE FROM {parser_common_syndication} WHERE url = '%s'", $url);
return _parser_common_syndication_feedapi_get($url, $username, $password);
}
}
if (db_result(db_query("SELECT COUNT(*) FROM {parser_common_syndication} WHERE url = '%s'", $url)) == 0) {
db_query("INSERT INTO {parser_common_syndication} (etag, last_modified, url) VALUES ('%s', '%s', '%s')", $result->headers['ETag'], $result->headers['Last-Modified'], $url);
}
else {
db_query("UPDATE {parser_common_syndication} SET etag = '%s', last_modified = '%s' WHERE url = '%s'", $result->headers['ETag'], $result->headers['Last-Modified'], $url);
}
return $result->data;
}
/**
* Delete cache validating functions when feed is deleted
*/
function parser_common_syndication_nodeapi(&$node, $op) {
if (isset($node->feed) || feedapi_enabled_type($node->type)) {
switch ($op) {
case 'delete':
db_query("DELETE FROM {parser_common_syndication} WHERE url = '%s'", $node->feed->url);
$cache_dir = _parser_common_syndication_sanitize_cache();
$cache_filename = $cache_dir . '/' . md5($node->feed->url);
if (file_exists($cache_filename)) {
unlink($cache_filename);
}
break;
}
}
}
/**
* Determine the feed format of a SimpleXML parsed object structure.
*
* @param $xml
* SimpleXML-preprocessed feed.
* @return
* The feed format short description or FALSE if not compatible.
*/
function _parser_common_syndication_feed_format_detect($xml) {
if (!is_object($xml)) {
return FALSE;
}
$attr = $xml
->attributes();
$type = strtolower($xml
->getName());
if (isset($xml->entry) && $type == "feed") {
return "atom1.0";
}
if ($type == "rss" && $attr["version"] == "2.0") {
return "RSS2.0";
}
if ($type == "rdf" && isset($xml->channel)) {
return "RDF";
}
if ($type == "rss" && $attr["version"] == "0.91") {
return "RSS0.91";
}
if ($type == "rss" && $attr["version"] == "0.92") {
return "RSS0.92";
}
return FALSE;
}
/**
* Call one of the possible feedapi_get hook and pass back the downloaded data
*
* @return
* string - the downloaded data, FALSE - if the URL is not reachable
*/
function _parser_common_syndication_download($url, $op) {
if (valid_url($url, TRUE)) {
// Handle password protected feeds.
$url_parts = parse_url($url);
$password = $username = NULL;
if (!empty($url_parts['user'])) {
$password = $url_parts['pass'];
$username = $url_parts['user'];
}
}
$downloaded_string = _parser_common_syndication_feedapi_get($url, $username, $password, $op);
// Cannot get the feed, pass the problem to one level upper
if ($downloaded_string == "") {
return FALSE;
}
else {
if (is_object($downloaded_string)) {
return $downloaded_string;
}
}
// Do the autodiscovery at this level, pass back the real data
// Maybe it's HTML. If it's not HTML, not worth to take a look into the downloaded string
if (strpos(strtolower($downloaded_string), "<html") !== FALSE) {
$allowed_mime = array(
"text/xml",
"application/rss+xml",
"application/atom+xml",
"application/rdf+xml",
"application/xml",
);
$matches = array();
// Get all the links tag
preg_match_all('/<link\\s+(.*?)\\s*\\/?>/si', $downloaded_string, $matches);
$links = $matches[1];
$rss_link = FALSE;
foreach ($links as $link) {
$mime = array();
// Get the type attribute and check if the mime type is allowed.
preg_match_all('/type\\s*=\\s*("|' . "'" . ')([A-Za-z\\/+]*)("|' . "'" . ')/si', $link, $mime);
if (in_array(array_pop($mime[2]), $allowed_mime)) {
$href = array();
// Get the href attribute.
preg_match_all('/href\\s*=\\s*("|' . "'" . ')([=#\\?_:.0-9A-Za-z\\/+]*)("|' . "'" . ')/si', $link, $href);
$rss_link = array_pop($href[2]);
if (is_string($rss_link) && strlen($rss_link) > 0 && $rss_link != $url) {
// Handle base url related stuff.
$parsed_url = parse_url($rss_link);
if (!isset($parsed_url['host'])) {
// It's relative so make it absolute.
$base_tag = array();
preg_match_all('/<base href\\s*=\\s*("|' . "'" . ')([_:.0-9A-Za-z\\/+]*)("|' . "'" . ')/si', $link, $base_tag);
$base_url = array_pop($base_tag[2]);
if (is_string($base_url) && strlen($base_url) > 0) {
// Get from the HTML base tag.
$rss_link = $base_url . $rss_link;
}
else {
// Guess from the original URL.
$original_url = parse_url($url);
$rss_link = $original_url['scheme'] . '://' . $original_url['host'] . (isset($original_url['port']) ? ':' : '') . $original_url['port'] . $parsed_url['path'] . '?' . $parsed_url['query'] . '#' . $parsed_url['fragment'];
}
}
$downloaded_string = _parser_common_syndication_download($rss_link, $op);
break;
}
}
}
}
// Filter out strange tags. Without this, the text would contain strange stuff.
// @todo: make sure that these are not important for feed element mapper
$downloaded_string = preg_replace(array(
'@<script[^>]*?.*?</script>@si',
'@<object[^>]*?.*?</object>@si',
'@<embed[^>]*?.*?</embed>@si',
'@<applet[^>]*?.*?</applet>@si',
'@<noframes[^>]*?.*?</noframes>@si',
'@<noscript[^>]*?.*?</noscript>@si',
'@<noembed[^>]*?.*?</noembed>@si',
), array(
'',
'',
'',
'',
'',
'',
'',
), $downloaded_string);
// Ugly hack to be able to retrieve the xml:base property, no way to access xml:lang inside <feed>
$downloaded_string = preg_replace('/xml:base *=/', 'base=', $downloaded_string);
return $downloaded_string;
}
/**
* Parse atom feeds.
*/
function _parser_common_syndication_atom10_parse($feed_XML) {
$parsed_source = new stdClass();
$base = (string) array_shift($feed_XML
->xpath("@base"));
if (!valid_url($base, TRUE)) {
$base = FALSE;
}
// Detect the title
$parsed_source->title = isset($feed_XML->title) ? _parser_common_syndication_title("{$feed_XML->title}") : "";
// Detect the description
$parsed_source->description = isset($feed_XML->subtitle) ? "{$feed_XML->subtitle}" : "";
$parsed_source->options = new stdClass();
$parsed_source->options->link = _parser_common_syndication_link($feed_XML->link);
if (valid_url($parsed_source->options->link) && !valid_url($parsed_source->options->link, TRUE) && !empty($base)) {
$parsed_source->options->link = $base . $parsed_source->options->link;
}
$parsed_source->items = array();
foreach ($feed_XML->entry as $news) {
$original_url = NULL;
$guid = !empty($news->id) ? "{$news->id}" : NULL;
// I don't know how standard this is, but sometimes the id is the URL.
if (valid_url($guid, TRUE)) {
$original_url = $guid;
}
$additional_taxonomies = array();
if (isset($news->category)) {
$additional_taxonomies['ATOM Categories'] = array();
$additional_taxonomies['ATOM Domains'] = array();
foreach ($news->category as $category) {
$additional_taxonomies['ATOM Categories'][] = "{$category['term']}";
if (isset($category['scheme'])) {
$domain = "{$category['scheme']}";
if (!empty($domain)) {
if (!isset($additional_taxonomies['ATOM Domains'][$domain])) {
$additional_taxonomies['ATOM Domains'][$domain] = array();
}
$additional_taxonomies['ATOM Domains'][$domain][] = count($additional_taxonomies['ATOM Categories']) - 1;
}
}
}
}
$title = "{$news->title}";
if (!empty($news->content)) {
$body = '';
foreach ($news->content
->children() as $child) {
$body .= $child
->asXML();
}
$body .= "{$news->content}";
}
else {
if (!empty($news->summary)) {
$body = '';
foreach ($news->summary
->children() as $child) {
$body .= $child
->asXML();
}
$body .= "{$news->summary}";
}
}
if (!empty($news->content['src'])) {
// some src elements in some valid atom feeds contained no urls at all
if (valid_url("{$news->content['src']}")) {
$original_url = "{$news->content['src']}";
}
}
$author_found = FALSE;
if (!empty($news->source->author->name)) {
$original_author = "{$news->source->author->name}";
$author_found = TRUE;
}
else {
if (!empty($news->author->name)) {
$original_author = "{$news->author->name}";
$author_found = TRUE;
}
}
if (!empty($feed_XML->author->name) && !$author_found) {
$original_author = "{$feed_XML->author->name}";
}
$original_url = _parser_common_syndication_link($news->link);
$item = new stdClass();
$item->title = _parser_common_syndication_title($title);
$item->description = $body;
$item->options = new stdClass();
$item->options->original_author = $original_author;
$item->options->timestamp = _parser_common_syndication_parse_date(isset($news->published) ? "{$news->published}" : "{$news->issued}");
$item->options->original_url = $original_url;
if (valid_url($item->options->original_url) && !valid_url($item->options->original_url, TRUE) && !empty($base)) {
$item->options->original_url = $base . $item->options->original_url;
}
$item->options->guid = $guid;
$item->options->tags = $additional_taxonomies['ATOM Categories'];
$item->options->domains = $additional_taxonomies['ATOM Domains'];
$parsed_source->items[] = $item;
}
return $parsed_source;
}
/**
* Parse RSS1.0/RDF feeds.
*/
function _parser_common_syndication_RDF10_parse($feed_XML) {
$parsed_source = new stdClass();
// Detect the title.
$parsed_source->title = isset($feed_XML->channel->title) ? _parser_common_syndication_title("{$feed_XML->channel->title}") : "";
// Detect the description.
$parsed_source->description = isset($feed_XML->channel->description) ? "{$feed_XML->channel->description}" : "";
$parsed_source->options = new stdClass();
// Detect the link.
$parsed_source->options->link = isset($feed_XML->channel->link) ? "{$feed_XML->channel->link}" : "";
$parsed_source->items = array();
// Set category splitter (space is for del.icio.us feed).
$category_splitter = ' ';
// Get the default original author.
if ($feed_XML->channel->title) {
$oa = "{$feed_XML->channel->title}";
}
// Get all namespaces.
if (version_compare(phpversion(), '5.1.2', '<')) {
// Versions prior 5.1.2 don't allow namespaces.
$namespaces['default'] = NULL;
}
else {
$namespaces = $feed_XML
->getNamespaces(TRUE);
}
foreach ($feed_XML->item as $news) {
// Initialization.
$guid = $original_url = NULL;
$title = $body = '';
$additional_taxonomies = array();
$original_author = $oa;
foreach ($namespaces as $ns_link) {
// Get about attribute as guid.
foreach ($news
->attributes($ns_link) as $name => $value) {
if ($name == 'about') {
$guid = "{$value}";
}
}
// Get children for current namespace.
if (version_compare(phpversion(), '5.1.2', '<')) {
$ns = (array) $news;
}
else {
$ns = (array) $news
->children($ns_link);
}
// Title
if (!empty($ns['title'])) {
$title = "{$ns['title']}";
}
// Description or dc:description
if (!empty($ns['description']) && $body == '') {
$body = "{$ns['description']}";
}
// Link
if (!empty($ns['link'])) {
$original_url = "{$ns['link']}";
}
// dc:creator
if (!empty($ns['creator'])) {
$original_author = "{$ns['creator']}";
}
// content:encoded
if (!empty($ns['encoded'])) {
$body = "{$ns['encoded']}";
}
// dc:subject
if (!empty($ns['subject'])) {
// There can be multiple category tags.
if (is_array($ns['subject'])) {
foreach ($ns['subject'] as $cat) {
if (is_object($cat)) {
$additional_taxonomies['RDF Categories'][] = trim(strip_tags($cat
->asXML()));
}
else {
$additional_taxonomies['RDF Categories'][] = $cat;
}
}
}
else {
//or single tag
$additional_taxonomies['RDF Categories'] = explode($category_splitter, "{$ns['subject']}");
}
}
}
// The description is not mandatory so use title if description not present.
if (empty($body)) {
$body = $title;
}
// If there are no link tag but rdf:about is provided.
if (empty($original_url) && !empty($guid)) {
$original_url = $guid;
}
$item = new stdClass();
$item->title = _parser_common_syndication_title($title);
$item->description = $body;
$item->options = new stdClass();
$item->options->original_author = $original_author;
$item->options->timestamp = _parser_common_syndication_parse_date(empty($ns['pubDate']) ? "{$ns['date']}" : "{$ns['date']}");
$item->options->original_url = $original_url;
$item->options->guid = $guid;
$item->options->tags = $additional_taxonomies['RDF Categories'];
$parsed_source->items[] = $item;
}
return $parsed_source;
}
/**
* Parse RSS2.0 feeds.
*/
function _parser_common_syndication_RSS20_parse($feed_XML) {
$parsed_source = new stdClass();
// Detect the title.
$parsed_source->title = isset($feed_XML->channel->title) ? _parser_common_syndication_title("{$feed_XML->channel->title}") : "";
// Detect the description.
$parsed_source->description = isset($feed_XML->channel->description) ? "{$feed_XML->channel->description}" : "";
$parsed_source->options = new stdClass();
// Detect the link.
$parsed_source->options->link = isset($feed_XML->channel->link) ? "{$feed_XML->channel->link}" : "";
$parsed_source->items = array();
foreach ($feed_XML
->xpath('//item') as $news) {
// for PHP > 5.1.2 get 'content' namespace
$category = $news
->xpath('category');
// Get children for current namespace.
if (version_compare(phpversion(), '5.1.2', '>')) {
$content = (array) $news
->children('http://purl.org/rss/1.0/modules/content/');
}
$news = (array) $news;
$news['category'] = $category;
if (isset($news['guid'])) {
$guid = $news['guid'];
}
else {
$guid = NULL;
}
if (isset($news['title'])) {
$title = "{$news['title']}";
}
else {
$title = '';
}
if (isset($news['description'])) {
$body = "{$news['description']}";
}
elseif (isset($news['encoded'])) {
// content:encoded for PHP < 5.1.2.
$body = "{$news['encoded']}";
}
elseif (isset($content['encoded'])) {
// content:encoded for PHP >= 5.1.2.
$body = "{$content['encoded']}";
}
else {
$body = "{$news['title']}";
}
if (!empty($feed_XML->channel->title)) {
$original_author = "{$feed_XML->channel->title}";
}
if (!empty($news['link'])) {
$original_url = "{$news['link']}";
}
else {
$original_url = NULL;
}
$additional_taxonomies = array();
$additional_taxonomies['RSS Categories'] = array();
$additional_taxonomies['RSS Domains'] = array();
if (isset($news['category'])) {
foreach ($news['category'] as $category) {
$additional_taxonomies['RSS Categories'][] = "{$category}";
if (isset($category['domain'])) {
$domain = "{$category['domain']}";
if (!empty($domain)) {
if (!isset($additional_taxonomies['RSS Domains'][$domain])) {
$additional_taxonomies['RSS Domains'][$domain] = array();
}
$additional_taxonomies['RSS Domains'][$domain][] = count($additional_taxonomies['RSS Categories']) - 1;
}
}
}
}
$item = new stdClass();
$item->title = _parser_common_syndication_title($title);
$item->description = $body;
$item->options = new stdClass();
$item->options->original_author = $original_author;
$item->options->timestamp = _parser_common_syndication_parse_date($news['pubDate']);
$item->options->original_url = $original_url;
$item->options->guid = $guid;
$item->options->tags = $additional_taxonomies['RSS Categories'];
$item->options->domains = $additional_taxonomies['RSS Domains'];
$parsed_source->items[] = $item;
}
return $parsed_source;
}
/**
* Set the default caching directory if the current setting is not useable
*/
function _parser_common_syndication_sanitize_cache() {
$cache_location = file_directory_path() . '/parser_common_syndication_cache';
if (!is_writeable($cache_location) || !is_dir($cache_location)) {
$cache_location = file_create_path($cache_location);
if (!file_exists($cache_location) && is_writable(file_directory_path())) {
mkdir($cache_location);
}
if (!is_writeable($cache_location)) {
return FALSE;
}
}
return $cache_location;
}
/**
* Parse a date comes from a feed.
*
* @param $date_string
* The date string in various formats.
* @return
* The timestamp of the string or the current time if can't be parsed
*/
function _parser_common_syndication_parse_date($date_str) {
$parsed_date = strtotime($date_str);
if ($parsed_date === FALSE || $parsed_date == -1) {
$parsed_date = _parser_common_syndication_parse_w3cdtf($date_str);
}
return $parsed_date === FALSE ? time() : $parsed_date;
}
/**
* Parse the W3C date/time format, a subset of ISO 8601.
*
* PHP date parsing functions do not handle this format.
* See http://www.w3.org/TR/NOTE-datetime for more information.
* Originally from MagpieRSS (http://magpierss.sourceforge.net/).
*
* @param $date_str
* A string with a potentially W3C DTF date.
* @return
* A timestamp if parsed successfully or FALSE if not.
*/
function _parser_common_syndication_parse_w3cdtf($date_str) {
if (preg_match('/(\\d{4})-(\\d{2})-(\\d{2})T(\\d{2}):(\\d{2})(:(\\d{2}))?(?:([-+])(\\d{2}):?(\\d{2})|(Z))?/', $date_str, $match)) {
list($year, $month, $day, $hours, $minutes, $seconds) = array(
$match[1],
$match[2],
$match[3],
$match[4],
$match[5],
$match[6],
);
// Calculate the epoch for current date assuming GMT.
$epoch = gmmktime($hours, $minutes, $seconds, $month, $day, $year);
if ($match[10] != 'Z') {
// Z is zulu time, aka GMT
list($tz_mod, $tz_hour, $tz_min) = array(
$match[8],
$match[9],
$match[10],
);
// Zero out the variables.
if (!$tz_hour) {
$tz_hour = 0;
}
if (!$tz_min) {
$tz_min = 0;
}
$offset_secs = ($tz_hour * 60 + $tz_min) * 60;
// Is timezone ahead of GMT? If yes, subtract offset.
if ($tz_mod == '+') {
$offset_secs *= -1;
}
$epoch += $offset_secs;
}
return $epoch;
}
else {
return FALSE;
}
}
/**
* Extract the link that points to the original content (back to site or origi
*
* @param $links
* Array of SimpleXML objects
*/
function _parser_common_syndication_link($links) {
$to_link = '';
if (count($links) > 0) {
foreach ($links as $link) {
$link = $link
->attributes();
$to_link = isset($link["href"]) ? "{$link["href"]}" : "";
if (isset($link["rel"])) {
if ("{$link["rel"]}" == 'alternate') {
break;
}
}
}
}
return $to_link;
}
/**
* Prepare raw data to be a title
*/
function _parser_common_syndication_title($title) {
return html_entity_decode(strip_tags($title), ENT_QUOTES, 'UTF-8');
}Functions
Name |
Description |
|---|---|
| parser_common_syndication_feedapi_feed | Implementation of hook_feedapi_feed(). |
| parser_common_syndication_help | Implementation of hook_help(). |
| parser_common_syndication_nodeapi | Delete cache validating functions when feed is deleted |
| parser_common_syndication_requirements | Implementaton of hook_requirements(). |
| _parser_common_syndication_atom10_parse | Parse atom feeds. |
| _parser_common_syndication_cache_get | Get the cached version of the <var>$url</var> |
| _parser_common_syndication_cache_set | Store the parsed feed into the cache |
| _parser_common_syndication_download | Call one of the possible feedapi_get hook and pass back the downloaded data |
| _parser_common_syndication_feedapi_get | Get the content from the given URL. |
| _parser_common_syndication_feedapi_parse | Parse the feed into a data structure. |
| _parser_common_syndication_feed_format_detect | Determine the feed format of a SimpleXML parsed object structure. |
| _parser_common_syndication_link | Extract the link that points to the original content (back to site or origi |
| _parser_common_syndication_parse_date | Parse a date comes from a feed. |
| _parser_common_syndication_parse_w3cdtf | Parse the W3C date/time format, a subset of ISO 8601. |
| _parser_common_syndication_RDF10_parse | Parse RSS1.0/RDF feeds. |
| _parser_common_syndication_RSS20_parse | Parse RSS2.0 feeds. |
| _parser_common_syndication_sanitize_cache | Set the default caching directory if the current setting is not useable |
| _parser_common_syndication_title | Prepare raw data to be a title |