class FeedParser {
private $doc;
private $error;
+ private $libxml_errors = array();
private $items;
private $link;
private $title;
const FEED_RSS = 1;
const FEED_ATOM = 2;
+ function normalize_encoding($data) {
+ if (preg_match('/^(<\?xml[\t\n\r ].*?encoding[\t\n\r ]*=[\t\n\r ]*["\'])(.+?)(["\'].*?\?>)/s', $data, $matches) === 1) {
+ $data = mb_convert_encoding($data, 'UTF-8', $matches[2]);
+
+ $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);
+ mb_substitute_character("none");
+
$error = libxml_get_last_error();
- if ($error && $error->code == 9) {
- libxml_clear_errors();
+ // libxml compiled without iconv?
+ if ($error && $error->code == 32) {
+ $data = $this->normalize_encoding($data);
- // we might want to try guessing input encoding here too
- $data = iconv("UTF-8", "UTF-8//IGNORE", $data);
+ if ($data) {
+ libxml_clear_errors();
- $this->doc = new DOMDocument();
- $this->doc->loadXML($data);
+ $this->doc = new DOMDocument();
+ $this->doc->loadXML($data);
- $error = libxml_get_last_error();
+ $error = libxml_get_last_error();
+ }
}
- $this->error = $this->format_error($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();
$this->xpath = $xpath;
- $root = $xpath->query("(//atom03:feed|//atom:feed|//channel|//rdf:rdf|//rdf:RDF)")->item(0);
-
- if ($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":
- $this->type = $this::FEED_ATOM;
- break;
- default:
- if( !isset($this->error) ){
- $this->error = "Unknown/unsupported feed type";
+ $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":
+ $this->type = $this::FEED_ATOM;
+ break;
+ default:
+ if( !isset($this->error) ){
+ $this->error = "Unknown/unsupported feed type";
+ }
+ return;
}
- return;
}
switch ($this->type) {
break;
case $this::FEED_RSS:
-
$title = $xpath->query("//channel/title")->item(0);
if ($title) {
return $this->error;
}
+ function errors() {
+ return $this->libxml_errors;
+ }
+
function get_link() {
return $this->link;
}
}
break;
case $this::FEED_RSS:
- $links = $this->xpath->query("//channel/link");
+ $links = $this->xpath->query("//atom:link");
+
foreach ($links as $link) {
if (!$rel || $link->hasAttribute('rel') && $link->getAttribute('rel') == $rel) {
array_push($rv, $link->getAttribute('href'));