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1 <?php |
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2 /** |
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3 * Zend Framework |
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4 * |
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5 * LICENSE |
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6 * |
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7 * This source file is subject to the new BSD license that is bundled |
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8 * with this package in the file LICENSE.txt. |
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9 * It is also available through the world-wide-web at this URL: |
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10 * http://framework.zend.com/license/new-bsd |
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11 * If you did not receive a copy of the license and are unable to |
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12 * obtain it through the world-wide-web, please send an email |
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13 * to license@zend.com so we can send you a copy immediately. |
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14 * |
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15 * @category Zend |
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16 * @package Zend_Json |
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17 * @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com) |
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18 * @license http://framework.zend.com/license/new-bsd New BSD License |
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19 */ |
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20 |
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21 |
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22 /** |
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23 * Encode PHP constructs to JSON |
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24 * |
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25 * @category Zend |
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26 * @package Zend_Json |
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27 * @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com) |
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28 * @license http://framework.zend.com/license/new-bsd New BSD License |
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29 */ |
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30 class Zend_Json_Encoder |
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31 { |
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32 /** |
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33 * Whether or not to check for possible cycling |
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34 * |
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35 * @var boolean |
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36 */ |
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37 protected $_cycleCheck; |
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38 |
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39 /** |
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40 * Array of visited objects; used to prevent cycling. |
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41 * |
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42 * @var array |
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43 */ |
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44 protected $_visited = array(); |
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45 |
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46 /** |
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47 * Constructor |
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48 * |
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49 * @param boolean $cycleCheck Whether or not to check for recursion when encoding |
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50 * @return void |
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51 */ |
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52 protected function __construct($cycleCheck = false) |
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53 { |
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54 $this->_cycleCheck = $cycleCheck; |
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55 } |
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56 |
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57 /** |
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58 * Use the JSON encoding scheme for the value specified |
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59 * |
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60 * @param mixed $value The value to be encoded |
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61 * @param boolean $cycleCheck Whether or not to check for possible object recursion when encoding |
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62 * @return string The encoded value |
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63 */ |
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64 public static function encode($value, $cycleCheck = false) |
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65 { |
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66 $encoder = new Zend_Json_Encoder(($cycleCheck) ? true : false); |
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67 |
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68 return $encoder->_encodeValue($value); |
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69 } |
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70 |
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71 /** |
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72 * Recursive driver which determines the type of value to be encoded |
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73 * and then dispatches to the appropriate method. $values are either |
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74 * - objects (returns from {@link _encodeObject()}) |
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75 * - arrays (returns from {@link _encodeArray()}) |
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76 * - basic datums (e.g. numbers or strings) (returns from {@link _encodeDatum()}) |
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77 * |
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78 * @param $value mixed The value to be encoded |
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79 * @return string Encoded value |
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80 */ |
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81 protected function _encodeValue(&$value) |
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82 { |
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83 if (is_object($value)) { |
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84 return $this->_encodeObject($value); |
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85 } else if (is_array($value)) { |
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86 return $this->_encodeArray($value); |
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87 } |
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88 |
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89 return $this->_encodeDatum($value); |
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90 } |
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91 |
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92 |
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93 |
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94 /** |
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95 * Encode an object to JSON by encoding each of the public properties |
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96 * |
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97 * A special property is added to the JSON object called '__className' |
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98 * that contains the name of the class of $value. This is used to decode |
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99 * the object on the client into a specific class. |
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100 * |
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101 * @param $value object |
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102 * @return string |
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103 * @throws Zend_Json_Exception If recursive checks are enabled and the object has been serialized previously |
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104 */ |
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105 protected function _encodeObject(&$value) |
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106 { |
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107 if ($this->_cycleCheck) { |
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108 if ($this->_wasVisited($value)) { |
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109 throw new Zend_Json_Exception( |
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110 'Cycles not supported in JSON encoding, cycle introduced by ' |
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111 . 'class "' . get_class($value) . '"' |
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112 ); |
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113 } |
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114 |
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115 $this->_visited[] = $value; |
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116 } |
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117 |
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118 $props = ''; |
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119 foreach (get_object_vars($value) as $name => $propValue) { |
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120 if (isset($propValue)) { |
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121 $props .= ',' |
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122 . $this->_encodeValue($name) |
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123 . ':' |
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124 . $this->_encodeValue($propValue); |
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125 } |
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126 } |
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127 |
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128 return '{"__className":"' . get_class($value) . '"' |
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129 . $props . '}'; |
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130 } |
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131 |
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132 |
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133 /** |
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134 * Determine if an object has been serialized already |
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135 * |
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136 * @param mixed $value |
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137 * @return boolean |
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138 */ |
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139 protected function _wasVisited(&$value) |
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140 { |
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141 if (in_array($value, $this->_visited, true)) { |
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142 return true; |
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143 } |
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144 |
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145 return false; |
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146 } |
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147 |
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148 |
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149 /** |
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150 * JSON encode an array value |
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151 * |
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152 * Recursively encodes each value of an array and returns a JSON encoded |
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153 * array string. |
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154 * |
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155 * Arrays are defined as integer-indexed arrays starting at index 0, where |
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156 * the last index is (count($array) -1); any deviation from that is |
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157 * considered an associative array, and will be encoded as such. |
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158 * |
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159 * @param $array array |
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160 * @return string |
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161 */ |
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162 protected function _encodeArray(&$array) |
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163 { |
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164 $tmpArray = array(); |
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165 |
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166 // Check for associative array |
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167 if (!empty($array) && (array_keys($array) !== range(0, count($array) - 1))) { |
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168 // Associative array |
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169 $result = '{'; |
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170 foreach ($array as $key => $value) { |
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171 $key = (string) $key; |
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172 $tmpArray[] = $this->_encodeString($key) |
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173 . ':' |
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174 . $this->_encodeValue($value); |
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175 } |
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176 $result .= implode(',', $tmpArray); |
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177 $result .= '}'; |
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178 } else { |
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179 // Indexed array |
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180 $result = '['; |
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181 $length = count($array); |
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182 for ($i = 0; $i < $length; $i++) { |
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183 $tmpArray[] = $this->_encodeValue($array[$i]); |
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184 } |
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185 $result .= implode(',', $tmpArray); |
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186 $result .= ']'; |
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187 } |
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188 |
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189 return $result; |
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190 } |
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191 |
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192 |
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193 /** |
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194 * JSON encode a basic data type (string, number, boolean, null) |
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195 * |
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196 * If value type is not a string, number, boolean, or null, the string |
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197 * 'null' is returned. |
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198 * |
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199 * @param $value mixed |
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200 * @return string |
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201 */ |
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202 protected function _encodeDatum(&$value) |
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203 { |
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204 $result = 'null'; |
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205 |
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206 if (is_int($value) || is_float($value)) { |
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207 $result = (string)$value; |
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208 } elseif (is_string($value)) { |
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209 $result = $this->_encodeString($value); |
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210 } elseif (is_bool($value)) { |
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211 $result = $value ? 'true' : 'false'; |
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212 } |
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213 |
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214 return $result; |
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215 } |
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216 |
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217 |
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218 /** |
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219 * JSON encode a string value by escaping characters as necessary |
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220 * |
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221 * @param $value string |
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222 * @return string |
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223 */ |
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224 protected function _encodeString(&$string) |
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225 { |
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226 // Escape these characters with a backslash: |
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227 // " \ / \n \r \t \b \f |
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228 $search = array('\\', "\n", "\t", "\r", "\b", "\f", '"'); |
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229 $replace = array('\\\\', '\\n', '\\t', '\\r', '\\b', '\\f', '\"'); |
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230 $string = str_replace($search, $replace, $string); |
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231 |
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232 // Escape certain ASCII characters: |
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233 // 0x08 => \b |
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234 // 0x0c => \f |
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235 $string = str_replace(array(chr(0x08), chr(0x0C)), array('\b', '\f'), $string); |
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236 |
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237 return '"' . $string . '"'; |
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238 } |
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239 |
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240 |
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241 /** |
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242 * Encode the constants associated with the ReflectionClass |
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243 * parameter. The encoding format is based on the class2 format |
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244 * |
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245 * @param $cls ReflectionClass |
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246 * @return string Encoded constant block in class2 format |
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247 */ |
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248 private static function _encodeConstants(ReflectionClass $cls) |
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249 { |
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250 $result = "constants : {"; |
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251 $constants = $cls->getConstants(); |
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252 |
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253 $tmpArray = array(); |
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254 if (!empty($constants)) { |
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255 foreach ($constants as $key => $value) { |
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256 $tmpArray[] = "$key: " . self::encode($value); |
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257 } |
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258 |
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259 $result .= implode(', ', $tmpArray); |
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260 } |
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261 |
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262 return $result . "}"; |
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263 } |
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264 |
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265 |
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266 /** |
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267 * Encode the public methods of the ReflectionClass in the |
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268 * class2 format |
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269 * |
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270 * @param $cls ReflectionClass |
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271 * @return string Encoded method fragment |
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272 * |
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273 */ |
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274 private static function _encodeMethods(ReflectionClass $cls) |
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275 { |
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276 $methods = $cls->getMethods(); |
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277 $result = 'methods:{'; |
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278 |
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279 $started = false; |
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280 foreach ($methods as $method) { |
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281 if (! $method->isPublic() || !$method->isUserDefined()) { |
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282 continue; |
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283 } |
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284 |
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285 if ($started) { |
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286 $result .= ','; |
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287 } |
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288 $started = true; |
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289 |
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290 $result .= '' . $method->getName(). ':function('; |
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291 |
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292 if ('__construct' != $method->getName()) { |
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293 $parameters = $method->getParameters(); |
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294 $paramCount = count($parameters); |
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295 $argsStarted = false; |
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296 |
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297 $argNames = "var argNames=["; |
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298 foreach ($parameters as $param) { |
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299 if ($argsStarted) { |
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300 $result .= ','; |
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301 } |
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302 |
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303 $result .= $param->getName(); |
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304 |
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305 if ($argsStarted) { |
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306 $argNames .= ','; |
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307 } |
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308 |
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309 $argNames .= '"' . $param->getName() . '"'; |
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310 |
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311 $argsStarted = true; |
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312 } |
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313 $argNames .= "];"; |
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314 |
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315 $result .= "){" |
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316 . $argNames |
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317 . 'var result = ZAjaxEngine.invokeRemoteMethod(' |
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318 . "this, '" . $method->getName() |
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319 . "',argNames,arguments);" |
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320 . 'return(result);}'; |
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321 } else { |
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322 $result .= "){}"; |
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323 } |
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324 } |
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325 |
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326 return $result . "}"; |
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327 } |
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328 |
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329 |
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330 /** |
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331 * Encode the public properties of the ReflectionClass in the class2 |
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332 * format. |
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333 * |
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334 * @param $cls ReflectionClass |
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335 * @return string Encode properties list |
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336 * |
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337 */ |
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338 private static function _encodeVariables(ReflectionClass $cls) |
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339 { |
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340 $properties = $cls->getProperties(); |
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341 $propValues = get_class_vars($cls->getName()); |
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342 $result = "variables:{"; |
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343 $cnt = 0; |
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344 |
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345 $tmpArray = array(); |
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346 foreach ($properties as $prop) { |
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347 if (! $prop->isPublic()) { |
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348 continue; |
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349 } |
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350 |
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351 $tmpArray[] = $prop->getName() |
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352 . ':' |
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353 . self::encode($propValues[$prop->getName()]); |
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354 } |
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355 $result .= implode(',', $tmpArray); |
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356 |
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357 return $result . "}"; |
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358 } |
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359 |
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360 /** |
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361 * Encodes the given $className into the class2 model of encoding PHP |
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362 * classes into JavaScript class2 classes. |
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363 * NOTE: Currently only public methods and variables are proxied onto |
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364 * the client machine |
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365 * |
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366 * @param $className string The name of the class, the class must be |
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367 * instantiable using a null constructor |
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368 * @param $package string Optional package name appended to JavaScript |
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369 * proxy class name |
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370 * @return string The class2 (JavaScript) encoding of the class |
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371 * @throws Zend_Json_Exception |
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372 */ |
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373 public static function encodeClass($className, $package = '') |
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374 { |
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375 $cls = new ReflectionClass($className); |
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376 if (! $cls->isInstantiable()) { |
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377 throw new Zend_Json_Exception("$className must be instantiable"); |
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378 } |
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379 |
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380 return "Class.create('$package$className',{" |
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381 . self::_encodeConstants($cls) ."," |
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382 . self::_encodeMethods($cls) ."," |
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383 . self::_encodeVariables($cls) .'});'; |
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384 } |
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385 |
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386 |
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387 /** |
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388 * Encode several classes at once |
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389 * |
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390 * Returns JSON encoded classes, using {@link encodeClass()}. |
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391 * |
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392 * @param array $classNames |
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393 * @param string $package |
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394 * @return string |
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395 */ |
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396 public static function encodeClasses(array $classNames, $package = '') |
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397 { |
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398 $result = ''; |
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399 foreach ($classNames as $className) { |
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400 $result .= self::encodeClass($className, $package); |
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401 } |
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402 |
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403 return $result; |
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404 } |
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405 |
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406 } |
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407 |
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408 /** |
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409 * Decode JSON encoded string to PHP variable constructs |
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410 * |
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411 * @category Zend |
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412 * @package Zend_Json |
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413 * @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com) |
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414 * @license http://framework.zend.com/license/new-bsd New BSD License |
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415 */ |
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416 class Zend_Json_Decoder |
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417 { |
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418 /** |
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419 * Parse tokens used to decode the JSON object. These are not |
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420 * for public consumption, they are just used internally to the |
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421 * class. |
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422 */ |
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423 const EOF = 0; |
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424 const DATUM = 1; |
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425 const LBRACE = 2; |
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426 const LBRACKET = 3; |
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427 const RBRACE = 4; |
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428 const RBRACKET = 5; |
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429 const COMMA = 6; |
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430 const COLON = 7; |
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431 |
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432 /** |
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433 * Use to maintain a "pointer" to the source being decoded |
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434 * |
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435 * @var string |
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436 */ |
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437 protected $_source; |
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438 |
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439 /** |
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440 * Caches the source length |
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441 * |
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442 * @var int |
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443 */ |
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444 protected $_sourceLength; |
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445 |
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446 /** |
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447 * The offset within the souce being decoded |
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448 * |
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449 * @var int |
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450 * |
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451 */ |
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452 protected $_offset; |
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453 |
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454 /** |
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455 * The current token being considered in the parser cycle |
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456 * |
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457 * @var int |
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458 */ |
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459 protected $_token; |
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460 |
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461 /** |
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462 * Flag indicating how objects should be decoded |
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463 * |
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464 * @var int |
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465 * @access protected |
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466 */ |
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467 protected $_decodeType; |
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468 |
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469 /** |
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470 * Constructor |
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471 * |
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472 * @param string $source String source to decode |
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473 * @param int $decodeType How objects should be decoded -- see |
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474 * {@link Zend_Json::TYPE_ARRAY} and {@link Zend_Json::TYPE_OBJECT} for |
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475 * valid values |
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476 * @return void |
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477 */ |
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478 protected function __construct($source, $decodeType) |
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479 { |
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480 |
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481 // eliminate comments |
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482 $source = preg_replace(array( |
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483 |
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484 // eliminate single line comments in '// ...' form |
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485 '#^\s*//(.+)$#m', |
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486 |
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487 // eliminate multi-line comments in '/* ... */' form, at start of string |
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488 '#^\s*/\*(.+)\*/#Us', |
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489 |
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490 // eliminate multi-line comments in '/* ... */' form, at end of string |
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491 '#/\*(.+)\*/\s*$#Us' |
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492 |
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493 ), '', $source); |
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494 |
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495 // Set defaults |
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496 $this->_source = $source; |
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497 $this->_sourceLength = strlen($source); |
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498 $this->_token = self::EOF; |
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499 $this->_offset = 0; |
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500 |
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501 // Normalize and set $decodeType |
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502 if (!in_array($decodeType, array(Zend_Json::TYPE_ARRAY, Zend_Json::TYPE_OBJECT))) |
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503 { |
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504 $decodeType = Zend_Json::TYPE_ARRAY; |
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505 } |
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506 $this->_decodeType = $decodeType; |
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507 |
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508 // Set pointer at first token |
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509 $this->_getNextToken(); |
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510 } |
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511 |
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512 /** |
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513 * Decode a JSON source string |
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514 * |
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515 * Decodes a JSON encoded string. The value returned will be one of the |
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516 * following: |
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517 * - integer |
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518 * - float |
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519 * - boolean |
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520 * - null |
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521 * - StdClass |
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522 * - array |
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523 * - array of one or more of the above types |
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524 * |
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525 * By default, decoded objects will be returned as associative arrays; to |
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526 * return a StdClass object instead, pass {@link Zend_Json::TYPE_OBJECT} to |
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527 * the $objectDecodeType parameter. |
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528 * |
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529 * Throws a Zend_Json_Exception if the source string is null. |
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530 * |
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531 * @static |
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532 * @access public |
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533 * @param string $source String to be decoded |
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534 * @param int $objectDecodeType How objects should be decoded; should be |
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535 * either or {@link Zend_Json::TYPE_ARRAY} or |
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536 * {@link Zend_Json::TYPE_OBJECT}; defaults to TYPE_ARRAY |
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537 * @return mixed |
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538 * @throws Zend_Json_Exception |
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539 */ |
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540 public static function decode($source = null, $objectDecodeType = Zend_Json::TYPE_ARRAY) |
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541 { |
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542 if (null === $source) { |
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543 throw new Zend_Json_Exception('Must specify JSON encoded source for decoding'); |
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544 } elseif (!is_string($source)) { |
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545 throw new Zend_Json_Exception('Can only decode JSON encoded strings'); |
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546 } |
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547 |
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548 $decoder = new self($source, $objectDecodeType); |
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549 |
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550 return $decoder->_decodeValue(); |
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551 } |
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552 |
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553 |
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554 /** |
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555 * Recursive driving rountine for supported toplevel tops |
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556 * |
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557 * @return mixed |
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558 */ |
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559 protected function _decodeValue() |
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560 { |
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561 switch ($this->_token) { |
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562 case self::DATUM: |
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563 $result = $this->_tokenValue; |
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564 $this->_getNextToken(); |
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565 return($result); |
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566 break; |
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567 case self::LBRACE: |
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568 return($this->_decodeObject()); |
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569 break; |
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570 case self::LBRACKET: |
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571 return($this->_decodeArray()); |
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572 break; |
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573 default: |
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574 return null; |
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575 break; |
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576 } |
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577 } |
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578 |
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579 /** |
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580 * Decodes an object of the form: |
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581 * { "attribute: value, "attribute2" : value,...} |
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582 * |
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583 * If ZJsonEnoder or ZJAjax was used to encode the original object |
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584 * then a special attribute called __className which specifies a class |
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585 * name that should wrap the data contained within the encoded source. |
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586 * |
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587 * Decodes to either an array or StdClass object, based on the value of |
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588 * {@link $_decodeType}. If invalid $_decodeType present, returns as an |
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589 * array. |
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590 * |
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591 * @return array|StdClass |
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592 */ |
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593 protected function _decodeObject() |
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594 { |
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595 $members = array(); |
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596 $tok = $this->_getNextToken(); |
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597 |
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598 while ($tok && $tok != self::RBRACE) { |
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599 if ($tok != self::DATUM || ! is_string($this->_tokenValue)) { |
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600 throw new Zend_Json_Exception('Missing key in object encoding: ' . $this->_source); |
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601 } |
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602 |
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603 $key = $this->_tokenValue; |
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604 $tok = $this->_getNextToken(); |
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605 |
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606 if ($tok != self::COLON) { |
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607 throw new Zend_Json_Exception('Missing ":" in object encoding: ' . $this->_source); |
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608 } |
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609 |
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610 $tok = $this->_getNextToken(); |
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611 $members[$key] = $this->_decodeValue(); |
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612 $tok = $this->_token; |
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613 |
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614 if ($tok == self::RBRACE) { |
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615 break; |
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616 } |
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617 |
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618 if ($tok != self::COMMA) { |
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619 throw new Zend_Json_Exception('Missing "," in object encoding: ' . $this->_source); |
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620 } |
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621 |
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622 $tok = $this->_getNextToken(); |
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623 } |
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624 |
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625 switch ($this->_decodeType) { |
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626 case Zend_Json::TYPE_OBJECT: |
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627 // Create new StdClass and populate with $members |
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628 $result = new StdClass(); |
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629 foreach ($members as $key => $value) { |
|
630 $result->$key = $value; |
|
631 } |
|
632 break; |
|
633 case Zend_Json::TYPE_ARRAY: |
|
634 default: |
|
635 $result = $members; |
|
636 break; |
|
637 } |
|
638 |
|
639 $this->_getNextToken(); |
|
640 return $result; |
|
641 } |
|
642 |
|
643 /** |
|
644 * Decodes a JSON array format: |
|
645 * [element, element2,...,elementN] |
|
646 * |
|
647 * @return array |
|
648 */ |
|
649 protected function _decodeArray() |
|
650 { |
|
651 $result = array(); |
|
652 $starttok = $tok = $this->_getNextToken(); // Move past the '[' |
|
653 $index = 0; |
|
654 |
|
655 while ($tok && $tok != self::RBRACKET) { |
|
656 $result[$index++] = $this->_decodeValue(); |
|
657 |
|
658 $tok = $this->_token; |
|
659 |
|
660 if ($tok == self::RBRACKET || !$tok) { |
|
661 break; |
|
662 } |
|
663 |
|
664 if ($tok != self::COMMA) { |
|
665 throw new Zend_Json_Exception('Missing "," in array encoding: ' . $this->_source); |
|
666 } |
|
667 |
|
668 $tok = $this->_getNextToken(); |
|
669 } |
|
670 |
|
671 $this->_getNextToken(); |
|
672 return($result); |
|
673 } |
|
674 |
|
675 |
|
676 /** |
|
677 * Removes whitepsace characters from the source input |
|
678 */ |
|
679 protected function _eatWhitespace() |
|
680 { |
|
681 if (preg_match( |
|
682 '/([\t\b\f\n\r ])*/s', |
|
683 $this->_source, |
|
684 $matches, |
|
685 PREG_OFFSET_CAPTURE, |
|
686 $this->_offset) |
|
687 && $matches[0][1] == $this->_offset) |
|
688 { |
|
689 $this->_offset += strlen($matches[0][0]); |
|
690 } |
|
691 } |
|
692 |
|
693 |
|
694 /** |
|
695 * Retrieves the next token from the source stream |
|
696 * |
|
697 * @return int Token constant value specified in class definition |
|
698 */ |
|
699 protected function _getNextToken() |
|
700 { |
|
701 $this->_token = self::EOF; |
|
702 $this->_tokenValue = null; |
|
703 $this->_eatWhitespace(); |
|
704 |
|
705 if ($this->_offset >= $this->_sourceLength) { |
|
706 return(self::EOF); |
|
707 } |
|
708 |
|
709 $str = $this->_source; |
|
710 $str_length = $this->_sourceLength; |
|
711 $i = $this->_offset; |
|
712 $start = $i; |
|
713 |
|
714 switch ($str{$i}) { |
|
715 case '{': |
|
716 $this->_token = self::LBRACE; |
|
717 break; |
|
718 case '}': |
|
719 $this->_token = self::RBRACE; |
|
720 break; |
|
721 case '[': |
|
722 $this->_token = self::LBRACKET; |
|
723 break; |
|
724 case ']': |
|
725 $this->_token = self::RBRACKET; |
|
726 break; |
|
727 case ',': |
|
728 $this->_token = self::COMMA; |
|
729 break; |
|
730 case ':': |
|
731 $this->_token = self::COLON; |
|
732 break; |
|
733 case '"': |
|
734 $result = ''; |
|
735 do { |
|
736 $i++; |
|
737 if ($i >= $str_length) { |
|
738 break; |
|
739 } |
|
740 |
|
741 $chr = $str{$i}; |
|
742 if ($chr == '\\') { |
|
743 $i++; |
|
744 if ($i >= $str_length) { |
|
745 break; |
|
746 } |
|
747 $chr = $str{$i}; |
|
748 switch ($chr) { |
|
749 case '"' : |
|
750 $result .= '"'; |
|
751 break; |
|
752 case '\\': |
|
753 $result .= '\\'; |
|
754 break; |
|
755 case '/' : |
|
756 $result .= '/'; |
|
757 break; |
|
758 case 'b' : |
|
759 $result .= chr(8); |
|
760 break; |
|
761 case 'f' : |
|
762 $result .= chr(12); |
|
763 break; |
|
764 case 'n' : |
|
765 $result .= chr(10); |
|
766 break; |
|
767 case 'r' : |
|
768 $result .= chr(13); |
|
769 break; |
|
770 case 't' : |
|
771 $result .= chr(9); |
|
772 break; |
|
773 case '\'' : |
|
774 $result .= '\''; |
|
775 break; |
|
776 default: |
|
777 throw new Zend_Json_Exception("Illegal escape " |
|
778 . "sequence '" . $chr . "'"); |
|
779 } |
|
780 } elseif ($chr == '"') { |
|
781 break; |
|
782 } else { |
|
783 $result .= $chr; |
|
784 } |
|
785 } while ($i < $str_length); |
|
786 |
|
787 $this->_token = self::DATUM; |
|
788 //$this->_tokenValue = substr($str, $start + 1, $i - $start - 1); |
|
789 $this->_tokenValue = $result; |
|
790 break; |
|
791 case "'": |
|
792 $result = ''; |
|
793 do { |
|
794 $i++; |
|
795 if ($i >= $str_length) { |
|
796 break; |
|
797 } |
|
798 |
|
799 $chr = $str{$i}; |
|
800 if ($chr == '\\') { |
|
801 $i++; |
|
802 if ($i >= $str_length) { |
|
803 break; |
|
804 } |
|
805 $chr = $str{$i}; |
|
806 switch ($chr) { |
|
807 case "'" : |
|
808 $result .= "'"; |
|
809 break; |
|
810 case '\\': |
|
811 $result .= '\\'; |
|
812 break; |
|
813 case '/' : |
|
814 $result .= '/'; |
|
815 break; |
|
816 case 'b' : |
|
817 $result .= chr(8); |
|
818 break; |
|
819 case 'f' : |
|
820 $result .= chr(12); |
|
821 break; |
|
822 case 'n' : |
|
823 $result .= chr(10); |
|
824 break; |
|
825 case 'r' : |
|
826 $result .= chr(13); |
|
827 break; |
|
828 case 't' : |
|
829 $result .= chr(9); |
|
830 break; |
|
831 case '"' : |
|
832 $result .= '"'; |
|
833 break; |
|
834 default: |
|
835 throw new Zend_Json_Exception("Illegal escape " |
|
836 . "sequence '" . $chr . "'"); |
|
837 } |
|
838 } elseif ($chr == "'") { |
|
839 break; |
|
840 } else { |
|
841 $result .= $chr; |
|
842 } |
|
843 } while ($i < $str_length); |
|
844 |
|
845 $this->_token = self::DATUM; |
|
846 //$this->_tokenValue = substr($str, $start + 1, $i - $start - 1); |
|
847 $this->_tokenValue = $result; |
|
848 break; |
|
849 case 't': |
|
850 if (($i+ 3) < $str_length && substr($str, $start, 4) == "true") { |
|
851 $this->_token = self::DATUM; |
|
852 } |
|
853 $this->_tokenValue = true; |
|
854 $i += 3; |
|
855 break; |
|
856 case 'f': |
|
857 if (($i+ 4) < $str_length && substr($str, $start, 5) == "false") { |
|
858 $this->_token = self::DATUM; |
|
859 } |
|
860 $this->_tokenValue = false; |
|
861 $i += 4; |
|
862 break; |
|
863 case 'n': |
|
864 if (($i+ 3) < $str_length && substr($str, $start, 4) == "null") { |
|
865 $this->_token = self::DATUM; |
|
866 } |
|
867 $this->_tokenValue = NULL; |
|
868 $i += 3; |
|
869 break; |
|
870 case ' ': |
|
871 break; |
|
872 } |
|
873 |
|
874 if ($this->_token != self::EOF) { |
|
875 $this->_offset = $i + 1; // Consume the last token character |
|
876 return($this->_token); |
|
877 } |
|
878 |
|
879 $chr = $str{$i}; |
|
880 if ($chr == '-' || $chr == '.' || ($chr >= '0' && $chr <= '9')) { |
|
881 if (preg_match('/-?([0-9])*(\.[0-9]*)?((e|E)((-|\+)?)[0-9]+)?/s', |
|
882 $str, $matches, PREG_OFFSET_CAPTURE, $start) && $matches[0][1] == $start) { |
|
883 |
|
884 $datum = $matches[0][0]; |
|
885 |
|
886 if (is_numeric($datum)) { |
|
887 if (preg_match('/^0\d+$/', $datum)) { |
|
888 throw new Zend_Json_Exception("Octal notation not supported by JSON (value: $datum)"); |
|
889 } else { |
|
890 $val = intval($datum); |
|
891 $fVal = floatval($datum); |
|
892 $this->_tokenValue = ($val == $fVal ? $val : $fVal); |
|
893 } |
|
894 } else { |
|
895 throw new Zend_Json_Exception("Illegal number format: $datum"); |
|
896 } |
|
897 |
|
898 $this->_token = self::DATUM; |
|
899 $this->_offset = $start + strlen($datum); |
|
900 } |
|
901 } else { |
|
902 throw new Zend_Json_Exception("Illegal Token at pos $i: $chr\nContext:\n--------------------------------------------------" . substr($str, $i) . "\n--------------------------------------------------"); |
|
903 } |
|
904 |
|
905 return($this->_token); |
|
906 } |
|
907 } |
|
908 |
|
909 /** |
|
910 * Zend Framework |
|
911 * |
|
912 * LICENSE |
|
913 * |
|
914 * This source file is subject to the new BSD license that is bundled |
|
915 * with this package in the file LICENSE.txt. |
|
916 * It is also available through the world-wide-web at this URL: |
|
917 * http://framework.zend.com/license/new-bsd |
|
918 * If you did not receive a copy of the license and are unable to |
|
919 * obtain it through the world-wide-web, please send an email |
|
920 * to license@zend.com so we can send you a copy immediately. |
|
921 * |
|
922 * @category Zend |
|
923 * @package Zend_Json |
|
924 * @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com) |
|
925 * @license http://framework.zend.com/license/new-bsd New BSD License |
|
926 */ |
|
927 |
|
928 |
|
929 /** |
|
930 * @category Zend |
|
931 * @package Zend_Json |
|
932 * @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com) |
|
933 * @license http://framework.zend.com/license/new-bsd New BSD License |
|
934 */ |
|
935 class Zend_Json_Exception extends Zend_Exception |
|
936 {} |
|
937 |
|
938 /** |
|
939 * @category Zend |
|
940 * @package Zend |
|
941 * @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com) |
|
942 * @license http://framework.zend.com/license/new-bsd New BSD License |
|
943 */ |
|
944 class Zend_Exception extends Exception |
|
945 {} |
|
946 |
|
947 /** |
|
948 * Class for encoding to and decoding from JSON. |
|
949 * |
|
950 * @category Zend |
|
951 * @package Zend_Json |
|
952 * @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com) |
|
953 * @license http://framework.zend.com/license/new-bsd New BSD License |
|
954 */ |
|
955 class Zend_Json |
|
956 { |
|
957 /** |
|
958 * How objects should be encoded -- arrays or as StdClass. TYPE_ARRAY is 1 |
|
959 * so that it is a boolean true value, allowing it to be used with |
|
960 * ext/json's functions. |
|
961 */ |
|
962 const TYPE_ARRAY = 1; |
|
963 const TYPE_OBJECT = 0; |
|
964 |
|
965 /** |
|
966 * @var bool |
|
967 */ |
|
968 public static $useBuiltinEncoderDecoder = true; |
|
969 |
|
970 /** |
|
971 * Decodes the given $encodedValue string which is |
|
972 * encoded in the JSON format |
|
973 * |
|
974 * Uses ext/json's json_decode if available. |
|
975 * |
|
976 * @param string $encodedValue Encoded in JSON format |
|
977 * @param int $objectDecodeType Optional; flag indicating how to decode |
|
978 * objects. See {@link ZJsonDecoder::decode()} for details. |
|
979 * @return mixed |
|
980 */ |
|
981 public static function decode($encodedValue, $objectDecodeType = Zend_Json::TYPE_ARRAY) |
|
982 { |
|
983 if (function_exists('json_decode') && self::$useBuiltinEncoderDecoder !== true) { |
|
984 return json_decode($encodedValue, $objectDecodeType); |
|
985 } |
|
986 |
|
987 return Zend_Json_Decoder::decode($encodedValue, $objectDecodeType); |
|
988 } |
|
989 |
|
990 |
|
991 /** |
|
992 * Encode the mixed $valueToEncode into the JSON format |
|
993 * |
|
994 * Encodes using ext/json's json_encode() if available. |
|
995 * |
|
996 * NOTE: Object should not contain cycles; the JSON format |
|
997 * does not allow object reference. |
|
998 * |
|
999 * NOTE: Only public variables will be encoded |
|
1000 * |
|
1001 * @param mixed $valueToEncode |
|
1002 * @param boolean $cycleCheck Optional; whether or not to check for object recursion; off by default |
|
1003 * @return string JSON encoded object |
|
1004 */ |
|
1005 public static function encode($valueToEncode, $cycleCheck = false) |
|
1006 { |
|
1007 if (function_exists('json_encode') && self::$useBuiltinEncoderDecoder !== true) { |
|
1008 return json_encode($valueToEncode); |
|
1009 } |
|
1010 |
|
1011 return Zend_Json_Encoder::encode($valueToEncode, $cycleCheck); |
|
1012 } |
|
1013 } |
|
1014 |
|
1015 ?> |