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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_Filter |
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17 * @copyright Copyright (c) 2005-2010 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 * @version $Id: Compress.php 20096 2010-01-06 02:05:09Z bkarwin $ |
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20 */ |
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21 |
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22 /** |
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23 * @see Zend_Filter_Interface |
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24 */ |
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25 require_once 'Zend/Filter/Interface.php'; |
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26 |
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27 /** |
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28 * Compresses a given string |
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29 * |
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30 * @category Zend |
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31 * @package Zend_Filter |
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32 * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) |
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33 * @license http://framework.zend.com/license/new-bsd New BSD License |
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34 */ |
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35 class Zend_Filter_Compress implements Zend_Filter_Interface |
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36 { |
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37 /** |
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38 * Compression adapter |
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39 */ |
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40 protected $_adapter = 'Gz'; |
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41 |
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42 /** |
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43 * Compression adapter constructor options |
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44 */ |
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45 protected $_adapterOptions = array(); |
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46 |
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47 /** |
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48 * Class constructor |
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49 * |
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50 * @param string|array $options (Optional) Options to set |
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51 */ |
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52 public function __construct($options = null) |
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53 { |
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54 if ($options instanceof Zend_Config) { |
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55 $options = $options->toArray(); |
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56 } |
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57 if (is_string($options)) { |
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58 $this->setAdapter($options); |
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59 } elseif ($options instanceof Zend_Filter_Compress_CompressInterface) { |
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60 $this->setAdapter($options); |
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61 } elseif (is_array($options)) { |
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62 $this->setOptions($options); |
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63 } |
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64 } |
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65 |
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66 /** |
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67 * Set filter setate |
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68 * |
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69 * @param array $options |
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70 * @return Zend_Filter_Compress |
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71 */ |
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72 public function setOptions(array $options) |
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73 { |
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74 foreach ($options as $key => $value) { |
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75 if ($key == 'options') { |
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76 $key = 'adapterOptions'; |
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77 } |
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78 $method = 'set' . ucfirst($key); |
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79 if (method_exists($this, $method)) { |
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80 $this->$method($value); |
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81 } |
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82 } |
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83 return $this; |
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84 } |
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85 |
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86 /** |
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87 * Returns the current adapter, instantiating it if necessary |
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88 * |
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89 * @return string |
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90 */ |
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91 public function getAdapter() |
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92 { |
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93 if ($this->_adapter instanceof Zend_Filter_Compress_CompressInterface) { |
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94 return $this->_adapter; |
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95 } |
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96 |
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97 $adapter = $this->_adapter; |
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98 $options = $this->getAdapterOptions(); |
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99 if (!class_exists($adapter)) { |
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100 require_once 'Zend/Loader.php'; |
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101 if (Zend_Loader::isReadable('Zend/Filter/Compress/' . ucfirst($adapter) . '.php')) { |
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102 $adapter = 'Zend_Filter_Compress_' . ucfirst($adapter); |
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103 } |
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104 Zend_Loader::loadClass($adapter); |
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105 } |
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106 |
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107 $this->_adapter = new $adapter($options); |
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108 if (!$this->_adapter instanceof Zend_Filter_Compress_CompressInterface) { |
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109 require_once 'Zend/Filter/Exception.php'; |
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110 throw new Zend_Filter_Exception("Compression adapter '" . $adapter . "' does not implement Zend_Filter_Compress_CompressInterface"); |
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111 } |
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112 return $this->_adapter; |
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113 } |
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114 |
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115 /** |
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116 * Retrieve adapter name |
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117 * |
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118 * @return string |
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119 */ |
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120 public function getAdapterName() |
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121 { |
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122 return $this->getAdapter()->toString(); |
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123 } |
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124 |
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125 /** |
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126 * Sets compression adapter |
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127 * |
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128 * @param string|Zend_Filter_Compress_CompressInterface $adapter Adapter to use |
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129 * @return Zend_Filter_Compress |
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130 */ |
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131 public function setAdapter($adapter) |
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132 { |
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133 if ($adapter instanceof Zend_Filter_Compress_CompressInterface) { |
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134 $this->_adapter = $adapter; |
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135 return $this; |
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136 } |
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137 if (!is_string($adapter)) { |
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138 require_once 'Zend/Filter/Exception.php'; |
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139 throw new Zend_Filter_Exception('Invalid adapter provided; must be string or instance of Zend_Filter_Compress_CompressInterface'); |
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140 } |
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141 $this->_adapter = $adapter; |
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142 |
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143 return $this; |
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144 } |
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145 |
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146 /** |
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147 * Retrieve adapter options |
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148 * |
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149 * @return array |
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150 */ |
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151 public function getAdapterOptions() |
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152 { |
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153 return $this->_adapterOptions; |
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154 } |
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155 |
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156 /** |
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157 * Set adapter options |
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158 * |
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159 * @param array $options |
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160 * @return void |
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161 */ |
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162 public function setAdapterOptions(array $options) |
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163 { |
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164 $this->_adapterOptions = $options; |
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165 return $this; |
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166 } |
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167 |
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168 /** |
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169 * Calls adapter methods |
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170 * |
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171 * @param string $method Method to call |
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172 * @param string|array $options Options for this method |
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173 */ |
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174 public function __call($method, $options) |
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175 { |
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176 $adapter = $this->getAdapter(); |
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177 if (!method_exists($adapter, $method)) { |
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178 require_once 'Zend/Filter/Exception.php'; |
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179 throw new Zend_Filter_Exception("Unknown method '{$method}'"); |
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180 } |
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181 |
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182 return call_user_func_array(array($adapter, $method), $options); |
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183 } |
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184 |
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185 /** |
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186 * Defined by Zend_Filter_Interface |
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187 * |
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188 * Compresses the content $value with the defined settings |
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189 * |
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190 * @param string $value Content to compress |
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191 * @return string The compressed content |
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192 */ |
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193 public function filter($value) |
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194 { |
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195 return $this->getAdapter()->compress($value); |
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196 } |
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197 } |