function _video_apiclient_request_xml in Video 5

Same name and namespace in other branches

1. 6 includes/apiclient.inc \_video_apiclient_request_xml()
2. 6.2 includes/apiclient.inc \_video_apiclient_request_xml()

When an include file requires to read an xml to receive information, such as for thumbnails, this script can be used to request the xml and return it as an array. Note that this is a modified function from the flickr.module, made to handle this type of call more generically. also, i suspect it could be done easier (and more quickly) in php 5.

Parameters

$provider: the string of the third party provider, such as 'youtube' or 'google' @param $url the url for the xml request @param $args an array of args to pass to the xml url @param $cacheable optional; if true, the result of this xml request will be cached. good to play nice w/ the third party folks so they don't stop providing service to your site... @return the xml results returned as an array

2 calls to _video_apiclient_request_xml()

_video_apiclient_google_request in types/video_google/video_google.module

_video_apiclient_youtube_request in types/video_youtube/video_youtube.module

this is a wrapper for _video_apiclient_request_xml that includes youtube's api key

File

includes/apiclient.inc, line 29

Some functions for using video hosting providers api (Youtube, Google Video, etc..) Part of this code has been inspired by the video_cck module and adapted for the video module by jyamada1

Code

function _video_apiclient_request_xml($provider, $url, $args = array(), $cacheable = true) {
  ksort($args);

  // build an argument hash that we'll use for the cache id and api signing
  $arghash = $provider . ':';
  foreach ($args as $k => $v) {
    $arghash .= $k . $v;
  }

  // build the url
  foreach ($args as $k => $v) {
    $encoded_params[] = urlencode($k) . '=' . urlencode($v);
  }
  $url .= '?' . implode('&', $encoded_params);

  // if it's a cachable request, try to load a cached value
  if ($cacheable) {
    if ($cache = cache_get($arghash, 'cache')) {
      return unserialize($cache->data);
    }
  }

  // connect and fetch a value
  $result = drupal_http_request($url);
  if ($result->code == 200) {
    $parser = drupal_xml_parser_create($result->data);
    $vals = array();
    $index = array();
    xml_parse_into_struct($parser, $result->data, $vals, $index);
    xml_parser_free($parser);
    $params = array();
    $level = array();
    $start_level = 1;
    foreach ($vals as $xml_elem) {
      if ($xml_elem['type'] == 'open') {
        if (array_key_exists('attributes', $xml_elem)) {
          list($level[$xml_elem['level']], $extra) = array_values($xml_elem['attributes']);
        }
        else {
          $level[$xml_elem['level']] = $xml_elem['tag'];
        }
      }
      if ($xml_elem['type'] == 'complete') {
        $php_stmt = '$params';
        while ($start_level < $xml_elem['level']) {
          $php_stmt .= '[$level[' . $start_level . ']]';
          $start_level++;
        }
        $php_stmt .= '[$xml_elem[\'tag\']][] = $xml_elem[\'value\'];';
        eval($php_stmt);
        $start_level--;
      }
    }

    // save a cacheable result for future use
    if ($cacheable) {
      cache_set($arghash, 'cache', serialize($params), time() + 3600);
    }
    return $params;
  }
  return array();
}