class FeedParser {
private $doc;
private $error;
+ private $libxml_errors = array();
private $items;
private $link;
private $title;
private $type;
+ private $xpath;
const FEED_RDF = 0;
const FEED_RSS = 1;
const FEED_ATOM = 2;
+ function normalize_encoding($data) {
+ if (preg_match('/^(<\?xml[\t\n\r ].*?encoding[\t\n\r ]*=[\t\n\r ]*["\'])(.+?)(["\'].*?\?>)/s', $data, $matches) === 1) {
+
+ $encoding = strtolower($matches[2]);
+
+ if (in_array($encoding, array_map('strtolower', mb_list_encodings())))
+ $data = mb_convert_encoding($data, 'UTF-8', $encoding);
+
+ $data = preg_replace('/^<\?xml[\t\n\r ].*?\?>/s', $matches[1] . "UTF-8" . $matches[3] , $data);
+ }
+
+ return $data;
+ }
+
function __construct($data) {
libxml_use_internal_errors(true);
libxml_clear_errors();
$this->doc = new DOMDocument();
$this->doc->loadXML($data);
- $this->error = $this->format_error(libxml_get_last_error());
+
+ mb_substitute_character("none");
+
+ $error = libxml_get_last_error();
+
+ // libxml compiled without iconv?
+ if ($error && $error->code == 32) {
+ $data = $this->normalize_encoding($data);
+
+ if ($data) {
+ libxml_clear_errors();
+
+ $this->doc = new DOMDocument();
+ $this->doc->loadXML($data);
+
+ $error = libxml_get_last_error();
+ }
+ }
+
+ // some terrible invalid unicode entity?
+ if ($error) {
+ foreach (libxml_get_errors() as $err) {
+ if ($err->code == 9) {
+ // if the source feed is not in utf8, next conversion will fail
+ $data = $this->normalize_encoding($data);
+
+ // remove dangling bytes
+ $data = mb_convert_encoding($data, 'UTF-8', 'UTF-8');
+
+ // apparently not all UTF-8 characters are valid for XML
+ $data = preg_replace('/[^\x{0009}\x{000a}\x{000d}\x{0020}-\x{D7FF}\x{E000}-\x{FFFD}]+/u', ' ', $data);
+
+ if ($data) {
+ libxml_clear_errors();
+
+ $this->doc = new DOMDocument();
+ $this->doc->loadXML($data);
+
+ $error = libxml_get_last_error();
+ }
+ break;
+ }
+ }
+ }
+
+ if ($error) {
+ foreach (libxml_get_errors() as $error) {
+ if ($error->level == LIBXML_ERR_FATAL) {
+ if(!isset($this->error)) //currently only the first error is reported
+ $this->error = $this->format_error($error);
+ $this->libxml_errors [] = $this->format_error($error);
+ }
+ }
+ }
libxml_clear_errors();
$this->items = array();
$root = $this->doc->firstChild;
$xpath = new DOMXPath($this->doc);
$xpath->registerNamespace('atom', 'http://www.w3.org/2005/Atom');
+ $xpath->registerNamespace('atom03', 'http://purl.org/atom/ns#');
+ $xpath->registerNamespace('media', 'http://search.yahoo.com/mrss/');
+ $xpath->registerNamespace('rdf', 'http://www.w3.org/1999/02/22-rdf-syntax-ns#');
+ $xpath->registerNamespace('slash', 'http://purl.org/rss/1.0/modules/slash/');
+ $xpath->registerNamespace('dc', 'http://purl.org/dc/elements/1.1/');
+ $xpath->registerNamespace('content', 'http://purl.org/rss/1.0/modules/content/');
+ $xpath->registerNamespace('thread', 'http://purl.org/syndication/thread/1.0');
- $root = $xpath->query("(//atom:feed|//channel)")->item(0);
+ $this->xpath = $xpath;
- if ($root) {
- switch ($root->tagName) {
- case "channel":
- $this->type = $this::FEED_RSS;
- break;
- case "feed":
- $this->type = $this::FEED_ATOM;
- break;
- default:
- $this->error = "Unknown/unsupported feed type";
- return;
+ $root = $xpath->query("(//atom03:feed|//atom:feed|//channel|//rdf:rdf|//rdf:RDF)");
+
+ if ($root && $root->length > 0) {
+ $root = $root->item(0);
+
+ if ($root) {
+ switch (mb_strtolower($root->tagName)) {
+ case "rdf:rdf":
+ $this->type = $this::FEED_RDF;
+ break;
+ case "channel":
+ $this->type = $this::FEED_RSS;
+ break;
+ case "feed":
+ case "atom:feed":
+ $this->type = $this::FEED_ATOM;
+ break;
+ default:
+ if( !isset($this->error) ){
+ $this->error = "Unknown/unsupported feed type";
+ }
+ return;
+ }
}
switch ($this->type) {
$title = $xpath->query("//atom:feed/atom:title")->item(0);
+ if (!$title)
+ $title = $xpath->query("//atom03:feed/atom03:title")->item(0);
+
+
if ($title) {
$this->title = $title->nodeValue;
}
$link = $xpath->query("//atom:feed/atom:link[not(@rel)]")->item(0);
+ if (!$link)
+ $link = $xpath->query("//atom:feed/atom:link[@rel='alternate']")->item(0);
+
+ if (!$link)
+ $link = $xpath->query("//atom03:feed/atom03:link[not(@rel)]")->item(0);
+
+ if (!$link)
+ $link = $xpath->query("//atom03:feed/atom03:link[@rel='alternate']")->item(0);
+
if ($link && $link->hasAttributes()) {
$this->link = $link->getAttribute("href");
}
$articles = $xpath->query("//atom:entry");
+ if (!$articles || $articles->length == 0)
+ $articles = $xpath->query("//atom03:entry");
+
foreach ($articles as $article) {
- array_push($this->items, new FeedItem_Atom($article));
+ array_push($this->items, new FeedItem_Atom($article, $this->doc, $this->xpath));
}
- break;
- case $this::FEED_RDF:
-
break;
case $this::FEED_RSS:
-
$title = $xpath->query("//channel/title")->item(0);
if ($title) {
$link = $xpath->query("//channel/link")->item(0);
- if ($link && $link->hasAttributes()) {
- $this->link = $link->getAttribute("href");
+ if ($link) {
+ if ($link->getAttribute("href"))
+ $this->link = $link->getAttribute("href");
+ else if ($link->nodeValue)
+ $this->link = $link->nodeValue;
}
$articles = $xpath->query("//channel/item");
foreach ($articles as $article) {
- array_push($this->items, new FeedItem_RSS($article));
+ array_push($this->items, new FeedItem_RSS($article, $this->doc, $this->xpath));
+ }
+
+ break;
+ case $this::FEED_RDF:
+ $xpath->registerNamespace('rssfake', 'http://purl.org/rss/1.0/');
+
+ $title = $xpath->query("//rssfake:channel/rssfake:title")->item(0);
+
+ if ($title) {
+ $this->title = $title->nodeValue;
+ }
+
+ $link = $xpath->query("//rssfake:channel/rssfake:link")->item(0);
+
+ if ($link) {
+ $this->link = $link->nodeValue;
+ }
+
+ $articles = $xpath->query("//rssfake:item");
+
+ foreach ($articles as $article) {
+ array_push($this->items, new FeedItem_RSS($article, $this->doc, $this->xpath));
}
break;
+
+ }
+
+ if ($this->title) $this->title = trim($this->title);
+ if ($this->link) $this->link = trim($this->link);
+
+ } else {
+ if( !isset($this->error) ){
+ $this->error = "Unknown/unsupported feed type";
}
+ return;
}
}
return $this->error;
}
+ function errors() {
+ return $this->libxml_errors;
+ }
+
function get_link() {
return $this->link;
}
return $this->items;
}
-} ?>
+ function get_links($rel) {
+ $rv = array();
+
+ switch ($this->type) {
+ case $this::FEED_ATOM:
+ $links = $this->xpath->query("//atom:feed/atom:link");
+
+ foreach ($links as $link) {
+ if (!$rel || $link->hasAttribute('rel') && $link->getAttribute('rel') == $rel) {
+ array_push($rv, trim($link->getAttribute('href')));
+ }
+ }
+ break;
+ case $this::FEED_RSS:
+ $links = $this->xpath->query("//atom:link");
+
+ foreach ($links as $link) {
+ if (!$rel || $link->hasAttribute('rel') && $link->getAttribute('rel') == $rel) {
+ array_push($rv, trim($link->getAttribute('href')));
+ }
+ }
+ break;
+ }
+
+ return $rv;
+ }
+}
git.wh0rd.org / tt-rss.git / blobdiff