1 <?php

     2 /**

     3  * Zend Framework

     4  *

     5  * LICENSE

     6  *

     7  * This source file is subject to the new BSD license that is bundled

     8  * with this package in the file LICENSE.txt.

     9  * It is also available through the world-wide-web at this URL:

    10  * http://framework.zend.com/license/new-bsd

    11  * If you did not receive a copy of the license and are unable to

    12  * obtain it through the world-wide-web, please send an email

    13  * to license@zend.com so we can send you a copy immediately.

    14  *

    15  * @category   Zend

    16  * @package    Zend_Config

    17  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)

    18  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    19  * @version    $Id: Yaml.php 23294 2010-11-05 00:27:34Z ramon $

    20  */

    21 

    22 /**

    23  * @see Zend_Config_Writer

    24  */

    25 require_once 'Zend/Config/Writer/FileAbstract.php';

    26 

    27 /**

    28  * @see Zend_Config_Yaml

    29  */

    30 require_once 'Zend/Config/Yaml.php';

    31 

    32 /**

    33  * @category   Zend

    34  * @package    Zend_Config

    35  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)

    36  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    37  */

    38 class Zend_Config_Writer_Yaml extends Zend_Config_Writer_FileAbstract

    39 {

    40     /**

    41      * What to call when we need to decode some YAML?

    42      *

    43      * @var callable

    44      */

    45     protected $_yamlEncoder = array('Zend_Config_Writer_Yaml', 'encode');

    46 

    47     /**

    48      * Get callback for decoding YAML

    49      *

    50      * @return callable

    51      */

    52     public function getYamlEncoder()

    53     {

    54         return $this->_yamlEncoder;

    55     }

    56 

    57     /**

    58      * Set callback for decoding YAML

    59      *

    60      * @param  $yamlEncoder the decoder to set

    61      * @return Zend_Config_Yaml

    62      */

    63     public function setYamlEncoder($yamlEncoder)

    64     {

    65         if (!is_callable($yamlEncoder)) {

    66             require_once 'Zend/Config/Exception.php';

    67             throw new Zend_Config_Exception('Invalid parameter to setYamlEncoder - must be callable');

    68         }

    69 

    70         $this->_yamlEncoder = $yamlEncoder;

    71         return $this;

    72     }

    73 

    74     /**

    75      * Render a Zend_Config into a YAML config string.

    76      *

    77      * @since 1.10

    78      * @return string

    79      */

    80     public function render()

    81     {

    82         $data        = $this->_config->toArray();

    83         $sectionName = $this->_config->getSectionName();

    84         $extends     = $this->_config->getExtends();

    85 

    86         if (is_string($sectionName)) {

    87             $data = array($sectionName => $data);

    88         }

    89 

    90         foreach ($extends as $section => $parentSection) {

    91             $data[$section][Zend_Config_Yaml::EXTENDS_NAME] = $parentSection;

    92         }

    93 

    94         // Ensure that each "extends" section actually exists

    95         foreach ($data as $section => $sectionData) {

    96             if (is_array($sectionData) && isset($sectionData[Zend_Config_Yaml::EXTENDS_NAME])) {

    97                 $sectionExtends = $sectionData[Zend_Config_Yaml::EXTENDS_NAME];

    98                 if (!isset($data[$sectionExtends])) {

    99                     // Remove "extends" declaration if section does not exist

   100                     unset($data[$section][Zend_Config_Yaml::EXTENDS_NAME]);

   101                 }

   102             }

   103         }

   104 

   105         return call_user_func($this->getYamlEncoder(), $data);

   106     }

   107 

   108     /**

   109      * Very dumb YAML encoder

   110      *

   111      * Until we have Zend_Yaml...

   112      *

   113      * @param array $data YAML data

   114      * @return string

   115      */

   116     public static function encode($data)

   117     {

   118         return self::_encodeYaml(0, $data);

   119     }

   120 

   121     /**

   122      * Service function for encoding YAML

   123      *

   124      * @param int $indent Current indent level

   125      * @param array $data Data to encode

   126      * @return string

   127      */

   128     protected static function _encodeYaml($indent, $data)

   129     {

   130         reset($data);

   131         $result = "";

   132         $numeric = is_numeric(key($data));

   133 

   134         foreach($data as $key => $value) {

   135             if(is_array($value)) {

   136                 $encoded = "\n".self::_encodeYaml($indent+1, $value);

   137             } else {

   138                 $encoded = (string)$value."\n";

   139             }

   140             $result .= str_repeat("  ", $indent).($numeric?"- ":"$key: ").$encoded;

   141         }

   142         return $result;

   143     }

   144 }