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<?php
/**
* @package com_zoo
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
/**
* Read and write data in JSON format
*
* @package Framework.Data
*/
class JSONData extends AppData {
/**
* If the returned object will be an associative array (default :true)
*
* @var boolean
* @since 1.0.0
*/
protected $_assoc = true;
/**
* Class Constructor
*
* @param string|array $data The data to read. Could be either an array or a json string
*
* @since 1.0.0
*/
public function __construct($data = array()) {
// decode JSON string
if (is_string($data)) {
$data = json_decode($data, $this->_assoc);
}
parent::__construct($data);
}
/**
* Encode an array or an object in JSON format
*
* @param array|object $data The data to encode
*
* @return string The json encoded string
*
* @since 1.0.0
*/
protected function _write($data) {
return $this->_jsonEncode($data);
}
/**
* Do the real json encoding adding human readability. Supports automatic indenting with tabs
*
* @param array|object $in The array or object to encode in json
* @param int $indent The indentation level. Adds $indent tabs to the string
*
* @return string The json encoded string
*
* @since 1.0.0
*/
public function _jsonEncode($in, $indent = 0) {
$out = '';
foreach ($in as $key => $value) {
$out .= str_repeat("\t", $indent + 1);
$out .= json_encode((string) $key).': ';
if (is_object($value) || is_array($value)) {
$out .= $this->_jsonEncode($value, $indent + 1);
} else {
$out .= json_encode($value);
}
$out .= ",\n";
}
if (!empty($out)) {
$out = substr($out, 0, -2);
}
$out = " {\n" . $out;
$out .= "\n" . str_repeat("\t", $indent) . "}";
return $out;
}
}