/**
* Retrieve a remote REST resource
* @param string full URL to this resource
* @param array|false contents of the accept-encoding header
* @param boolean if true, xml will be returned as a string, otherwise, xml will be
* parsed using PEAR_XMLParser
* @return string|array
*/
function retrieveData($url, $accept = false, $forcestring = false, $channel = false)
{
$cacheId = $this->getCacheId($url);
if ($ret = $this->useLocalCache($url, $cacheId)) {
return $ret;
}
$file = $trieddownload = false;
if (!isset($this->_options['offline'])) {
$trieddownload = true;
$file = $this->downloadHttp($url, $cacheId ? $cacheId['lastChange'] : false, $accept, $channel);
}
if (PEAR::isError($file)) {
if ($file->getCode() !== -9276) {
return $file;
}
$trieddownload = false;
$file = false;
// use local copy if available on socket connect error
}
if (!$file) {
$ret = $this->getCache($url);
if (!PEAR::isError($ret) && $trieddownload) {
// reset the age of the cache if the server says it was unmodified
$result = $this->saveCache($url, $ret, null, true, $cacheId);
if (PEAR::isError($result)) {
return PEAR::raiseErro($result->getMessage());
}
}
return $ret;
}
if (is_array($file)) {
$headers = $file[2];
$lastmodified = $file[1];
$content = $file[0];
} else {
$headers = array();
$lastmodified = false;
$content = $file;
}
if ($forcestring) {
$result = $this->saveCache($url, $content, $lastmodified, false, $cacheId);
if (PEAR::isError($result)) {
return PEAR::raiseErro($result->getMessage());
}
return $content;
}
if (isset($headers['content-type'])) {
switch ($headers['content-type']) {
case 'text/xml':
case 'application/xml':
case 'text/plain':
if ($headers['content-type'] === 'text/plain') {
$check = substr($content, 0, 5);
if ($check !== '<?xml') {
break;
}
}
$parser = new PEAR_XMLParser();
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
$err = $parser->parse($content);
PEAR::popErrorHandling();
if (PEAR::isError($err)) {
return PEAR::raiseError('Invalid xml downloaded from "' . $url . '": ' . $err->getMessage());
}
$content = $parser->getData();
case 'text/html':
default:
// use it as a string
}
} else {
// assume XML
$parser = new PEAR_XMLParser();
$parser->parse($content);
$content = $parser->getData();
}
$result = $this->saveCache($url, $content, $lastmodified, false, $cacheId);
if (PEAR::isError($result)) {
return PEAR::raiseErro($result->getMessage());
}
return $content;
}
