function update_parse_xml

Parses the XML of the Drupal release history info files.

Parameters

$raw_xml: A raw XML string of available release data for a given project.

Return value

Array of parsed data about releases for a given project, or NULL if there was an error parsing the string.

File

modules/update/update.fetch.inc, line 391

Code

function update_parse_xml($raw_xml) {
    try {
        $xml = new SimpleXMLElement($raw_xml);
    } catch (Exception $e) {
        // SimpleXMLElement::__construct produces an E_WARNING error message for
        // each error found in the XML data and throws an exception if errors
        // were detected. Catch any exception and return failure (NULL).
        return;
    }
    // If there is no valid project data, the XML is invalid, so return failure.
    if (!isset($xml->short_name)) {
        return;
    }
    $short_name = (string) $xml->short_name;
    $data = array();
    foreach ($xml as $k => $v) {
        $data[$k] = (string) $v;
    }
    $data['releases'] = array();
    if (isset($xml->releases)) {
        foreach ($xml->releases
            ->children() as $release) {
            $version = (string) $release->version;
            $data['releases'][$version] = array();
            foreach ($release->children() as $k => $v) {
                $data['releases'][$version][$k] = (string) $v;
            }
            $data['releases'][$version]['terms'] = array();
            if ($release->terms) {
                foreach ($release->terms
                    ->children() as $term) {
                    if (!isset($data['releases'][$version]['terms'][(string) $term->name])) {
                        $data['releases'][$version]['terms'][(string) $term->name] = array();
                    }
                    $data['releases'][$version]['terms'][(string) $term->name][] = (string) $term->value;
                }
            }
        }
    }
    return $data;
}