     1: <?php
     2: /**
     3:  * Copyright 2012-2014 Rackspace US, Inc.
     4:  *
     5:  * Licensed under the Apache License, Version 2.0 (the "License");
     6:  * you may not use this file except in compliance with the License.
     7:  * You may obtain a copy of the License at
     8:  *
     9:  * http://www.apache.org/licenses/LICENSE-2.0
    10:  *
    11:  * Unless required by applicable law or agreed to in writing, software
    12:  * distributed under the License is distributed on an "AS IS" BASIS,
    13:  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14:  * See the License for the specific language governing permissions and
    15:  * limitations under the License.
    16:  */
    17:
    18: namespace OpenCloud\Common\Http\Message;
    19:
    20: use Guzzle\Http\Message\Response;
    21: use OpenCloud\Common\Constants\Header;
    22: use OpenCloud\Common\Constants\Mime;
    23: use OpenCloud\Common\Exceptions\JsonError;
    24:
    25: class Formatter
    26: {
    27:
    28:     public static function decode(Response $response)
    29:     {
    30:         if (strpos($response->getHeader(Header::CONTENT_TYPE), Mime::JSON) !== false) {
    31:             $string = (string) $response->getBody();
    32:             $response = json_decode($string);
    33:             self::checkJsonError($string);
    34:
    35:             return $response;
    36:         }
    37:     }
    38:
    39:     public static function encode($body)
    40:     {
    41:         return json_encode($body);
    42:     }
    43:
    44:     public static function checkJsonError($string = null)
    45:     {
    46:         if (json_last_error()) {
    47:             $error = sprintf('%s', json_last_error_msg());
    48:             $message = ($string) ? sprintf('%s trying to decode: %s', $error, $string) : $error;
    49:             throw new JsonError($message);
    50:         }
    51:     }
    52: }
    53: