rpicms

A CMS for the Raspberry Pi
git clone git://archive.git.mtrnord.blog/RpicmsTeam/rpicms.git
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Headers.php (3404B)

      1 <?php
      2 /**
      3  * Slim - a micro PHP 5 framework
      4  *
      5  * @author      Josh Lockhart <info@slimframework.com>
      6  * @copyright   2011 Josh Lockhart
      7  * @link        http://www.slimframework.com
      8  * @license     http://www.slimframework.com/license
      9  * @version     2.4.2
     10  * @package     Slim
     11  *
     12  * MIT LICENSE
     13  *
     14  * Permission is hereby granted, free of charge, to any person obtaining
     15  * a copy of this software and associated documentation files (the
     16  * "Software"), to deal in the Software without restriction, including
     17  * without limitation the rights to use, copy, modify, merge, publish,
     18  * distribute, sublicense, and/or sell copies of the Software, and to
     19  * permit persons to whom the Software is furnished to do so, subject to
     20  * the following conditions:
     21  *
     22  * The above copyright notice and this permission notice shall be
     23  * included in all copies or substantial portions of the Software.
     24  *
     25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     29  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     30  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     31  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     32  */
     33 namespace Slim\Http;
     34 
     35  /**
     36   * HTTP Headers
     37   *
     38   * @package Slim
     39   * @author  Josh Lockhart
     40   * @since   1.6.0
     41   */
     42 class Headers extends \Slim\Helper\Set
     43 {
     44     /********************************************************************************
     45     * Static interface
     46     *******************************************************************************/
     47 
     48     /**
     49      * Special-case HTTP headers that are otherwise unidentifiable as HTTP headers.
     50      * Typically, HTTP headers in the $_SERVER array will be prefixed with
     51      * `HTTP_` or `X_`. These are not so we list them here for later reference.
     52      *
     53      * @var array
     54      */
     55     protected static $special = array(
     56         'CONTENT_TYPE',
     57         'CONTENT_LENGTH',
     58         'PHP_AUTH_USER',
     59         'PHP_AUTH_PW',
     60         'PHP_AUTH_DIGEST',
     61         'AUTH_TYPE'
     62     );
     63 
     64     /**
     65      * Extract HTTP headers from an array of data (e.g. $_SERVER)
     66      * @param  array $data
     67      * @return array
     68      */
     69     public static function extract($data)
     70     {
     71         $results = array();
     72         foreach ($data as $key => $value) {
     73             $key = strtoupper($key);
     74             if (strpos($key, 'X_') === 0 || strpos($key, 'HTTP_') === 0 || in_array($key, static::$special)) {
     75                 if ($key === 'HTTP_CONTENT_LENGTH') {
     76                     continue;
     77                 }
     78                 $results[$key] = $value;
     79             }
     80         }
     81 
     82         return $results;
     83     }
     84 
     85     /********************************************************************************
     86     * Instance interface
     87     *******************************************************************************/
     88 
     89     /**
     90      * Transform header name into canonical form
     91      * @param  string $key
     92      * @return string
     93      */
     94     protected function normalizeKey($key)
     95     {
     96         $key = strtolower($key);
     97         $key = str_replace(array('-', '_'), ' ', $key);
     98         $key = preg_replace('#^http #', '', $key);
     99         $key = ucwords($key);
    100         $key = str_replace(' ', '-', $key);
    101 
    102         return $key;
    103     }
    104 }