| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Config_File class. |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with this library; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | * |
| 20 | * For questions, help, comments, discussion, etc., please join the |
| 21 | * Smarty mailing list. Send a blank e-mail to |
| 22 | * smarty-discussion-subscribe@googlegroups.com |
| 23 | * |
| 24 | * @link http://www.smarty.net/ |
| 25 | * @version 2.6.26 |
| 26 | * @copyright Copyright: 2001-2005 New Digital Group, Inc. |
| 27 | * @author Andrei Zmievski <andrei@php.net> |
| 28 | * @access public |
| 29 | * @package Smarty |
| 30 | */ |
| 31 | |
| 32 | /* $Id: Config_File.class.php 3149 2009-05-23 20:59:25Z monte.ohrt $ */ |
| 33 | |
| 34 | /** |
| 35 | * Config file reading class |
| 36 | * @package Smarty |
| 37 | */ |
| 38 | class Config_File { |
| 39 | /**#@+ |
| 40 | * Options |
| 41 | * @var boolean |
| 42 | */ |
| 43 | /** |
| 44 | * Controls whether variables with the same name overwrite each other. |
| 45 | */ |
| 46 | var $overwrite = true; |
| 47 | |
| 48 | /** |
| 49 | * Controls whether config values of on/true/yes and off/false/no get |
| 50 | * converted to boolean values automatically. |
| 51 | */ |
| 52 | var $booleanize = true; |
| 53 | |
| 54 | /** |
| 55 | * Controls whether hidden config sections/vars are read from the file. |
| 56 | */ |
| 57 | var $read_hidden = true; |
| 58 | |
| 59 | /** |
| 60 | * Controls whether or not to fix mac or dos formatted newlines. |
| 61 | * If set to true, \r or \r\n will be changed to \n. |
| 62 | */ |
| 63 | var $fix_newlines = true; |
| 64 | /**#@-*/ |
| 65 | |
| 66 | /** @access private */ |
| 67 | var $_config_path = ""; |
| 68 | var $_config_data = array(); |
| 69 | /**#@-*/ |
| 70 | |
| 71 | /** |
| 72 | * Constructs a new config file class. |
| 73 | * |
| 74 | * @param string $config_path (optional) path to the config files |
| 75 | */ |
| 76 | function Config_File($config_path = NULL) |
| 77 | { |
| 78 | if (isset($config_path)) |
| 79 | $this->set_path($config_path); |
| 80 | } |
| 81 | |
| 82 | |
| 83 | /** |
| 84 | * Set the path where configuration files can be found. |
| 85 | * |
| 86 | * @param string $config_path path to the config files |
| 87 | */ |
| 88 | function set_path($config_path) |
| 89 | { |
| 90 | if (!empty($config_path)) { |
| 91 | if (!is_string($config_path) || !file_exists($config_path) || !is_dir($config_path)) { |
| 92 | $this->_trigger_error_msg("Bad config file path '$config_path'"); |
| 93 | return; |
| 94 | } |
| 95 | if(substr($config_path, -1) != DIRECTORY_SEPARATOR) { |
| 96 | $config_path .= DIRECTORY_SEPARATOR; |
| 97 | } |
| 98 | |
| 99 | $this->_config_path = $config_path; |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | |
| 104 | /** |
| 105 | * Retrieves config info based on the file, section, and variable name. |
| 106 | * |
| 107 | * @param string $file_name config file to get info for |
| 108 | * @param string $section_name (optional) section to get info for |
| 109 | * @param string $var_name (optional) variable to get info for |
| 110 | * @return string|array a value or array of values |
| 111 | */ |
| 112 | function get($file_name, $section_name = NULL, $var_name = NULL) |
| 113 | { |
| 114 | if (empty($file_name)) { |
| 115 | $this->_trigger_error_msg('Empty config file name'); |
| 116 | return; |
| 117 | } else { |
| 118 | $file_name = $this->_config_path . $file_name; |
| 119 | if (!isset($this->_config_data[$file_name])) |
| 120 | $this->load_file($file_name, false); |
| 121 | } |
| 122 | |
| 123 | if (!empty($var_name)) { |
| 124 | if (empty($section_name)) { |
| 125 | return $this->_config_data[$file_name]["vars"][$var_name]; |
| 126 | } else { |
| 127 | if(isset($this->_config_data[$file_name]["sections"][$section_name]["vars"][$var_name])) |
| 128 | return $this->_config_data[$file_name]["sections"][$section_name]["vars"][$var_name]; |
| 129 | else |
| 130 | return array(); |
| 131 | } |
| 132 | } else { |
| 133 | if (empty($section_name)) { |
| 134 | return (array)$this->_config_data[$file_name]["vars"]; |
| 135 | } else { |
| 136 | if(isset($this->_config_data[$file_name]["sections"][$section_name]["vars"])) |
| 137 | return (array)$this->_config_data[$file_name]["sections"][$section_name]["vars"]; |
| 138 | else |
| 139 | return array(); |
| 140 | } |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | |
| 145 | /** |
| 146 | * Retrieves config info based on the key. |
| 147 | * |
| 148 | * @param $file_name string config key (filename/section/var) |
| 149 | * @return string|array same as get() |
| 150 | * @uses get() retrieves information from config file and returns it |
| 151 | */ |
| 152 | function &get_key($config_key) |
| 153 | { |
| 154 | list($file_name, $section_name, $var_name) = explode('/', $config_key, 3); |
| 155 | $result = &$this->get($file_name, $section_name, $var_name); |
| 156 | return $result; |
| 157 | } |
| 158 | |
| 159 | /** |
| 160 | * Get all loaded config file names. |
| 161 | * |
| 162 | * @return array an array of loaded config file names |
| 163 | */ |
| 164 | function get_file_names() |
| 165 | { |
| 166 | return array_keys($this->_config_data); |
| 167 | } |
| 168 | |
| 169 | |
| 170 | /** |
| 171 | * Get all section names from a loaded file. |
| 172 | * |
| 173 | * @param string $file_name config file to get section names from |
| 174 | * @return array an array of section names from the specified file |
| 175 | */ |
| 176 | function get_section_names($file_name) |
| 177 | { |
| 178 | $file_name = $this->_config_path . $file_name; |
| 179 | if (!isset($this->_config_data[$file_name])) { |
| 180 | $this->_trigger_error_msg("Unknown config file '$file_name'"); |
| 181 | return; |
| 182 | } |
| 183 | |
| 184 | return array_keys($this->_config_data[$file_name]["sections"]); |
| 185 | } |
| 186 | |
| 187 | |
| 188 | /** |
| 189 | * Get all global or section variable names. |
| 190 | * |
| 191 | * @param string $file_name config file to get info for |
| 192 | * @param string $section_name (optional) section to get info for |
| 193 | * @return array an array of variables names from the specified file/section |
| 194 | */ |
| 195 | function get_var_names($file_name, $section = NULL) |
| 196 | { |
| 197 | if (empty($file_name)) { |
| 198 | $this->_trigger_error_msg('Empty config file name'); |
| 199 | return; |
| 200 | } else if (!isset($this->_config_data[$file_name])) { |
| 201 | $this->_trigger_error_msg("Unknown config file '$file_name'"); |
| 202 | return; |
| 203 | } |
| 204 | |
| 205 | if (empty($section)) |
| 206 | return array_keys($this->_config_data[$file_name]["vars"]); |
| 207 | else |
| 208 | return array_keys($this->_config_data[$file_name]["sections"][$section]["vars"]); |
| 209 | } |
| 210 | |
| 211 | |
| 212 | /** |
| 213 | * Clear loaded config data for a certain file or all files. |
| 214 | * |
| 215 | * @param string $file_name file to clear config data for |
| 216 | */ |
| 217 | function clear($file_name = NULL) |
| 218 | { |
| 219 | if ($file_name === NULL) |
| 220 | $this->_config_data = array(); |
| 221 | else if (isset($this->_config_data[$file_name])) |
| 222 | $this->_config_data[$file_name] = array(); |
| 223 | } |
| 224 | |
| 225 | |
| 226 | /** |
| 227 | * Load a configuration file manually. |
| 228 | * |
| 229 | * @param string $file_name file name to load |
| 230 | * @param boolean $prepend_path whether current config path should be |
| 231 | * prepended to the filename |
| 232 | */ |
| 233 | function load_file($file_name, $prepend_path = true) |
| 234 | { |
| 235 | if ($prepend_path && $this->_config_path != "") |
| 236 | $config_file = $this->_config_path . $file_name; |
| 237 | else |
| 238 | $config_file = $file_name; |
| 239 | |
| 240 | ini_set('track_errors', true); |
| 241 | $fp = @fopen($config_file, "r"); |
| 242 | if (!is_resource($fp)) { |
| 243 | $this->_trigger_error_msg("Could not open config file '$config_file'"); |
| 244 | return false; |
| 245 | } |
| 246 | |
| 247 | $contents = ($size = filesize($config_file)) ? fread($fp, $size) : ''; |
| 248 | fclose($fp); |
| 249 | |
| 250 | $this->_config_data[$config_file] = $this->parse_contents($contents); |
| 251 | return true; |
| 252 | } |
| 253 | |
| 254 | /** |
| 255 | * Store the contents of a file manually. |
| 256 | * |
| 257 | * @param string $config_file file name of the related contents |
| 258 | * @param string $contents the file-contents to parse |
| 259 | */ |
| 260 | function set_file_contents($config_file, $contents) |
| 261 | { |
| 262 | $this->_config_data[$config_file] = $this->parse_contents($contents); |
| 263 | return true; |
| 264 | } |
| 265 | |
| 266 | /** |
| 267 | * parse the source of a configuration file manually. |
| 268 | * |
| 269 | * @param string $contents the file-contents to parse |
| 270 | */ |
| 271 | function parse_contents($contents) |
| 272 | { |
| 273 | if($this->fix_newlines) { |
| 274 | // fix mac/dos formatted newlines |
| 275 | $contents = preg_replace('!\r\n?!', "\n", $contents); |
| 276 | } |
| 277 | |
| 278 | $config_data = array(); |
| 279 | $config_data['sections'] = array(); |
| 280 | $config_data['vars'] = array(); |
| 281 | |
| 282 | /* reference to fill with data */ |
| 283 | $vars =& $config_data['vars']; |
| 284 | |
| 285 | /* parse file line by line */ |
| 286 | preg_match_all('!^.*\r?\n?!m', $contents, $match); |
| 287 | $lines = $match[0]; |
| 288 | for ($i=0, $count=count($lines); $i<$count; $i++) { |
| 289 | $line = $lines[$i]; |
| 290 | if (empty($line)) continue; |
| 291 | |
| 292 | if ( substr($line, 0, 1) == '[' && preg_match('!^\[(.*?)\]!', $line, $match) ) { |
| 293 | /* section found */ |
| 294 | if (substr($match[1], 0, 1) == '.') { |
| 295 | /* hidden section */ |
| 296 | if ($this->read_hidden) { |
| 297 | $section_name = substr($match[1], 1); |
| 298 | } else { |
| 299 | /* break reference to $vars to ignore hidden section */ |
| 300 | unset($vars); |
| 301 | $vars = array(); |
| 302 | continue; |
| 303 | } |
| 304 | } else { |
| 305 | $section_name = $match[1]; |
| 306 | } |
| 307 | if (!isset($config_data['sections'][$section_name])) |
| 308 | $config_data['sections'][$section_name] = array('vars' => array()); |
| 309 | $vars =& $config_data['sections'][$section_name]['vars']; |
| 310 | continue; |
| 311 | } |
| 312 | |
| 313 | if (preg_match('/^\s*(\.?\w+)\s*=\s*(.*)/s', $line, $match)) { |
| 314 | /* variable found */ |
| 315 | $var_name = rtrim($match[1]); |
| 316 | if (strpos($match[2], '"""') === 0) { |
| 317 | /* handle multiline-value */ |
| 318 | $lines[$i] = substr($match[2], 3); |
| 319 | $var_value = ''; |
| 320 | while ($i<$count) { |
| 321 | if (($pos = strpos($lines[$i], '"""')) === false) { |
| 322 | $var_value .= $lines[$i++]; |
| 323 | } else { |
| 324 | /* end of multiline-value */ |
| 325 | $var_value .= substr($lines[$i], 0, $pos); |
| 326 | break; |
| 327 | } |
| 328 | } |
| 329 | $booleanize = false; |
| 330 | |
| 331 | } else { |
| 332 | /* handle simple value */ |
| 333 | $var_value = preg_replace('/^([\'"])(.*)\1$/', '\2', rtrim($match[2])); |
| 334 | $booleanize = $this->booleanize; |
| 335 | |
| 336 | } |
| 337 | $this->_set_config_var($vars, $var_name, $var_value, $booleanize); |
| 338 | } |
| 339 | /* else unparsable line / means it is a comment / means ignore it */ |
| 340 | } |
| 341 | return $config_data; |
| 342 | } |
| 343 | |
| 344 | /**#@+ @access private */ |
| 345 | /** |
| 346 | * @param array &$container |
| 347 | * @param string $var_name |
| 348 | * @param mixed $var_value |
| 349 | * @param boolean $booleanize determines whether $var_value is converted to |
| 350 | * to true/false |
| 351 | */ |
| 352 | function _set_config_var(&$container, $var_name, $var_value, $booleanize) |
| 353 | { |
| 354 | if (substr($var_name, 0, 1) == '.') { |
| 355 | if (!$this->read_hidden) |
| 356 | return; |
| 357 | else |
| 358 | $var_name = substr($var_name, 1); |
| 359 | } |
| 360 | |
| 361 | if (!preg_match("/^[a-zA-Z_]\w*$/", $var_name)) { |
| 362 | $this->_trigger_error_msg("Bad variable name '$var_name'"); |
| 363 | return; |
| 364 | } |
| 365 | |
| 366 | if ($booleanize) { |
| 367 | if (preg_match("/^(on|true|yes)$/i", $var_value)) |
| 368 | $var_value = true; |
| 369 | else if (preg_match("/^(off|false|no)$/i", $var_value)) |
| 370 | $var_value = false; |
| 371 | } |
| 372 | |
| 373 | if (!isset($container[$var_name]) || $this->overwrite) |
| 374 | $container[$var_name] = $var_value; |
| 375 | else { |
| 376 | settype($container[$var_name], 'array'); |
| 377 | $container[$var_name][] = $var_value; |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | /** |
| 382 | * @uses trigger_error() creates a PHP warning/error |
| 383 | * @param string $error_msg |
| 384 | * @param integer $error_type one of |
| 385 | */ |
| 386 | function _trigger_error_msg($error_msg, $error_type = E_USER_WARNING) |
| 387 | { |
| 388 | trigger_error("Config_File error: $error_msg", $error_type); |
| 389 | } |
| 390 | /**#@-*/ |
| 391 | } |
| 392 | |
| 393 | ?> |