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<?php // $Id: movino_feeds.inc,v 1.4 2007/09/19 15:12:38 tomsun Exp $
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/**
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* Figures out the URL to a Movino feed
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*/
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function movino_feed_url($server, $type) {
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// Allow for full paths.
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if (substr($server['feed_' . $type . '_path'], 0, 7) == 'http://') {
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return $server['feed_' . $type . '_path'];
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}
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// Default to path constructed from host and port.
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return 'http://' . $server['host'] . ':' . $server['feed_' . $type . '_port'] . '/' . $server['feed_' . $type . '_path'];
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}
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/**
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* Takes an XML feed as a string and returns an array.
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*
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* @param string $xmlData
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* The contents of the XML feed.
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*
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* @return array
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*/
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function _movino_feed_parse($url) {
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// Experimentally removed in favor of Curl.
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// $data = file_get_contents($url);
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$c = curl_init();
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$timeout = 5;
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curl_setopt ($c, CURLOPT_URL, $url);
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curl_setopt ($c, CURLOPT_RETURNTRANSFER, 1);
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curl_setopt ($c, CURLOPT_CONNECTTIMEOUT, $timeout);
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$data = curl_exec($c);
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curl_close($c);
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// Verify that the contents of the data is a Movino feed.
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if (substr($data, 0, 1) != '<') {
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if (MOVINO_DEBUG) {
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drupal_set_message('Feed fetching failed: ' . $url);
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}
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return FALSE;
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}
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// Create a parser object.
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$parser = new XML_Unserializer();
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// Parse and return an array.
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return $parser->unserialize($data);
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}
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/**
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* Feed parser.
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*/
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class XML_Unserializer {
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var $stack;
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var $arr_output;
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var $null_token = "null";
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function unserialize($str_input_xml) {
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$p = xml_parser_create("");
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xml_parser_set_option($p,XML_OPTION_SKIP_WHITE,1);
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xml_set_element_handler($p, array(&$this, 'start_handler'), array(&$this, 'end_handler'));
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xml_set_character_data_handler($p, array(&$this, 'data_handler'));
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$this->stack = array(
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array(
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'name' => 'document',
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'attributes' => array(),
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'children' => array(),
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'data' => ''
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)
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);
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if (!xml_parse($p, $str_input_xml)) {
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trigger_error(xml_error_string(xml_get_error_code($p)) ."\n". $str_input_xml, E_USER_NOTICE);
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xml_parser_free($p);
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return;
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}
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xml_parser_free($p);
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$tmp = $this->build_array($this->stack[0]);
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if (is_array($tmp) && count($tmp) == 1) {
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$this->arr_output = array_pop($tmp);
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}
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else {
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$this->arr_output = array();
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}
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unset($this->stack);
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return $this->arr_output;
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}
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function get_unserialized_data() {
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return $this->arr_output;
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}
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function build_array($stack) {
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$result = array();
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if (count($stack['attributes']) > 0) {
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$result = array_merge($result, $stack['attributes']);
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}
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if (count($stack['children']) > 0) {
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if (count($stack['children']) == 1) {
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$key = array_keys($stack['children']);
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if ($stack['children'][$key[0]]['name'] === $this->null_token) {
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return NULL;
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}
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}
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$keycount = array();
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foreach ($stack['children'] as $child) {
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$keycount[] = $child['name'];
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}
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if (count(array_unique($keycount)) != count($keycount)) {
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// enumerated array
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$children = array();
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foreach ($stack['children'] as $child) {
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$children[] = $this->build_array($child);
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}
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}
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else {
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// indexed array
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$children = array();
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foreach ($stack['children'] as $child) {
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$children[$child['name']] = $this->build_array($child);
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}
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}
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$result = array_merge($result, $children);
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}
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if (count($result) == 0) {
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return trim($stack['data']);
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}
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else {
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return $result;
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}
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}
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function start_handler($parser, $name, $attribs = array()) {
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$token = array();
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$token['name'] = strtolower($name);
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$token['attributes'] = $attribs;
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$token['data'] = '';
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$token['children'] = array();
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$this->stack[] = $token;
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}
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function end_handler($parser, $name, $attribs = array()) {
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$token = array_pop($this->stack);
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$this->stack[count($this->stack) - 1]['children'][] = $token;
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}
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function data_handler($parser, $data) {
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$this->stack[count($this->stack) - 1]['data'] .= $data;
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}
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}
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function xml_serialize($tagname, $data) {
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$xml = "<$tagname>";
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if (is_array($data)) {
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foreach ($data as $key => $value) {
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$xml .= xml_serialize($key, $value);
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}
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}
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else {
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$xml .= "<![CDATA[".$data."]]>";
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}
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$xml .= "</$tagname>\n";
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return $xml;
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}
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