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diff --git a/vendor/easyrdf/easyrdf/lib/EasyRdf/Http/Response.php b/vendor/easyrdf/easyrdf/lib/EasyRdf/Http/Response.php
new file mode 100644
index 000000000..21f986a83
--- /dev/null
+++ b/vendor/easyrdf/easyrdf/lib/EasyRdf/Http/Response.php
@@ -0,0 +1,360 @@
+status = intval($status);
+ $this->body = $body;
+ $this->version = $version;
+ $this->message = $message;
+
+ foreach ($headers as $k => $v) {
+ $k = ucwords(strtolower($k));
+ $this->headers[$k] = $v;
+ }
+ }
+
+ /**
+ * Check whether the response in successful
+ *
+ * @return boolean
+ */
+ public function isSuccessful()
+ {
+ return ($this->status >= 200 && $this->status < 300);
+ }
+
+ /**
+ * Check whether the response is an error
+ *
+ * @return boolean
+ */
+ public function isError()
+ {
+ return ($this->status >= 400 && $this->status < 600);
+ }
+
+ /**
+ * Check whether the response is a redirection
+ *
+ * @return boolean
+ */
+ public function isRedirect()
+ {
+ return ($this->status >= 300 && $this->status < 400);
+ }
+
+ /**
+ * Get the HTTP response status code
+ *
+ * @return int
+ */
+ public function getStatus()
+ {
+ return $this->status;
+ }
+
+ /**
+ * Return a message describing the HTTP response code
+ * (Eg. "OK", "Not Found", "Moved Permanently")
+ *
+ * @return string
+ */
+ public function getMessage()
+ {
+ return $this->message;
+ }
+
+ /**
+ * Get the response body as string
+ *
+ * @return string
+ */
+ public function getBody()
+ {
+ // Decode the body if it was transfer-encoded
+ switch (strtolower($this->getHeader('transfer-encoding'))) {
+ // Handle chunked body
+ case 'chunked':
+ return self::decodeChunkedBody($this->body);
+ break;
+
+ // No transfer encoding, or unknown encoding extension:
+ // return body as is
+ default:
+ return $this->body;
+ break;
+ }
+ }
+
+ /**
+ * Get the raw response body (as transfered "on wire") as string
+ *
+ * If the body is encoded (with Transfer-Encoding, not content-encoding -
+ * IE "chunked" body), gzip compressed, etc. it will not be decoded.
+ *
+ * @return string
+ */
+ public function getRawBody()
+ {
+ return $this->body;
+ }
+
+ /**
+ * Get the HTTP version of the response
+ *
+ * @return string
+ */
+ public function getVersion()
+ {
+ return $this->version;
+ }
+
+ /**
+ * Get the response headers
+ *
+ * @return array
+ */
+ public function getHeaders()
+ {
+ return $this->headers;
+ }
+
+ /**
+ * Get a specific header as string, or null if it is not set
+ *
+ * @param string$header
+ * @return string|array|null
+ */
+ public function getHeader($header)
+ {
+ $header = ucwords(strtolower($header));
+ if (array_key_exists($header, $this->headers)) {
+ return $this->headers[$header];
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * Get all headers as string
+ *
+ * @param boolean $statusLine Whether to return the first status line (ie "HTTP 200 OK")
+ * @param string $br Line breaks (eg. "\n", "\r\n", "
")
+ * @return string
+ */
+ public function getHeadersAsString($statusLine = true, $br = "\n")
+ {
+ $str = '';
+
+ if ($statusLine) {
+ $str = "HTTP/{$this->version} {$this->status} {$this->message}{$br}";
+ }
+
+ // Iterate over the headers and stringify them
+ foreach ($this->headers as $name => $value) {
+ if (is_string($value)) {
+ $str .= "{$name}: {$value}{$br}";
+ } elseif (is_array($value)) {
+ foreach ($value as $subval) {
+ $str .= "{$name}: {$subval}{$br}";
+ }
+ }
+ }
+
+ return $str;
+ }
+
+ /**
+ * Create an EasyRdf_Http_Response object from a HTTP response string
+ *
+ * @param string $responseStr
+ * @return EasyRdf_Http_Response
+ */
+ public static function fromString($responseStr)
+ {
+ // First, split body and headers
+ $matches = preg_split('|(?:\r?\n){2}|m', $responseStr, 2);
+ if ($matches and sizeof($matches) == 2) {
+ list ($headerLines, $body) = $matches;
+ } else {
+ throw new EasyRdf_Exception(
+ "Failed to parse HTTP response."
+ );
+ }
+
+ // Split headers part to lines
+ $headerLines = preg_split('|[\r\n]+|m', $headerLines);
+ $status = array_shift($headerLines);
+ if (preg_match("|^HTTP/([\d\.x]+) (\d+) ([^\r\n]+)|", $status, $m)) {
+ $version = $m[1];
+ $status = $m[2];
+ $message = $m[3];
+ } else {
+ throw new EasyRdf_Exception(
+ "Failed to parse HTTP response status line."
+ );
+ }
+
+ // Process the rest of the header lines
+ $headers = array();
+ foreach ($headerLines as $line) {
+ if (preg_match("|^([\w-]+):\s+(.+)$|", $line, $m)) {
+ $hName = ucwords(strtolower($m[1]));
+ $hValue = $m[2];
+
+ if (isset($headers[$hName])) {
+ if (! is_array($headers[$hName])) {
+ $headers[$hName] = array($headers[$hName]);
+ }
+ $headers[$hName][] = $hValue;
+ } else {
+ $headers[$hName] = $hValue;
+ }
+ }
+ }
+
+ return new EasyRdf_Http_Response($status, $headers, $body, $version, $message);
+ }
+
+
+ /**
+ * Decode a "chunked" transfer-encoded body and return the decoded text
+ *
+ * @param string $body
+ * @return string
+ */
+ public static function decodeChunkedBody($body)
+ {
+ $decBody = '';
+
+ while (trim($body)) {
+ if (preg_match('/^([\da-fA-F]+)[^\r\n]*\r\n/sm', $body, $m)) {
+ $length = hexdec(trim($m[1]));
+ $cut = strlen($m[0]);
+ $decBody .= substr($body, $cut, $length);
+ $body = substr($body, $cut + $length + 2);
+ } else {
+ throw new EasyRdf_Exception(
+ "Failed to decode chunked body in HTTP response."
+ );
+ }
+ }
+
+ return $decBody;
+ }
+
+
+ /**
+ * Get the entire response as string
+ *
+ * @param string $br Line breaks (eg. "\n", "\r\n", "
")
+ * @return string
+ */
+ public function asString($br = "\n")
+ {
+ return $this->getHeadersAsString(true, $br) . $br . $this->getRawBody();
+ }
+
+ /**
+ * Implements magic __toString()
+ *
+ * @return string
+ */
+ public function __toString()
+ {
+ return $this->asString();
+ }
+}