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<?php |
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|
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/** |
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* Config_File class. |
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* |
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* @version 2.3.0 |
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* @author Andrei Zmievski <andrei@php.net> |
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* @access public |
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* |
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* Copyright: 2001,2002 ispi of Lincoln, Inc. |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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* You may contact the author of Config_File by e-mail at: |
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* andrei@php.net |
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* |
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* Or, write to: |
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* Andrei Zmievski |
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* Software Engineer, ispi |
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* 237 S. 70th suite 220 |
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* Lincoln, NE 68510 |
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* |
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* The latest version of Config_File can be obtained from: |
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* http://www.phpinsider.com |
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*/ |
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|
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class Config_File { |
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/* Options */ |
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/** |
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* Controls whether variables with the same name overwrite each other. |
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* |
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* @access public |
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*/ |
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var $overwrite = true; |
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|
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/** |
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* Controls whether config values of on/true/yes and off/false/no get |
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* converted to boolean values automatically. |
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* |
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* @access public |
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*/ |
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var $booleanize = true; |
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|
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/** |
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* Controls whether hidden config sections/vars are read from the file. |
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* |
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* @access public |
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*/ |
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var $read_hidden = true; |
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|
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/* Private variables */ |
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var $_config_path = ""; |
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var $_config_data = array(); |
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var $_separator = ""; |
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|
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|
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/** |
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* Constructs a new config file class. |
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* |
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* @param $config_path string (optional) path to the config files |
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* @access public |
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*/ |
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function Config_File($config_path = NULL) |
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{ |
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if (substr(PHP_OS, 0, 3) == "WIN" || substr(PHP_OS, 0, 4) == "OS/2") |
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$this->_separator = "\\"; |
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else |
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$this->_separator = "/"; |
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|
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if (isset($config_path)) |
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$this->set_path($config_path); |
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} |
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|
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|
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/** |
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* Set the path where configuration files can be found. |
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* |
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* @param $config_path string path to the config files |
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* @access public |
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*/ |
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function set_path($config_path) |
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{ |
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if (!empty($config_path)) { |
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if (!is_string($config_path) || !file_exists($config_path) || !is_dir($config_path)) { |
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$this->_trigger_error_msg("Bad config file path '$config_path'"); |
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return; |
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} |
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|
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$this->_config_path = $config_path . $this->_separator; |
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} |
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} |
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|
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|
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/** |
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* Retrieves config info based on the file, section, and variable name. |
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* |
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* @access public |
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* @param $file_name string config file to get info for |
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* @param $section_name string (optional) section to get info for |
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* @param $var_name string (optional) variable to get info for |
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* @return mixed a value or array of values |
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*/ |
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function &get($file_name, $section_name = NULL, $var_name = NULL) |
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{ |
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if (empty($file_name)) { |
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$this->_trigger_error_msg('Empty config file name'); |
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return; |
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} else { |
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$file_name = $this->_config_path . $file_name; |
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if (!isset($this->_config_data[$file_name])) |
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$this->load_file($file_name, false); |
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} |
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|
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if (!empty($var_name)) { |
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if (empty($section_name)) { |
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return $this->_config_data[$file_name]["vars"][$var_name]; |
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} else { |
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if(isset($this->_config_data[$file_name]["sections"][$section_name]["vars"][$var_name])) |
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return $this->_config_data[$file_name]["sections"][$section_name]["vars"][$var_name]; |
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else |
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return array(); |
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} |
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} else { |
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if (empty($section_name)) { |
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return (array)$this->_config_data[$file_name]["vars"]; |
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} else { |
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if(isset($this->_config_data[$file_name]["sections"][$section_name]["vars"])) |
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return (array)$this->_config_data[$file_name]["sections"][$section_name]["vars"]; |
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else |
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return array(); |
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} |
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} |
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} |
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|
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|
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/** |
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* Retrieves config info based on the key. |
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* |
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* @access public |
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* @param $file_name string config key (filename/section/var) |
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* @return mixed a value or array of values |
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*/ |
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function &get_key($config_key) |
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{ |
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list($file_name, $section_name, $var_name) = explode('/', $config_key, 3); |
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$result = &$this->get($file_name, $section_name, $var_name); |
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return $result; |
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} |
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|
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/** |
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* Get all loaded config file names. |
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* |
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* @access public |
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* @return array an array of loaded config file names |
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*/ |
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function get_file_names() |
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{ |
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return array_keys($this->_config_data); |
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} |
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|
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|
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/** |
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* Get all section names from a loaded file. |
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* |
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* @access public |
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* @param $file_name string config file to get section names from |
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* @return array an array of section names from the specified file |
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*/ |
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function get_section_names($file_name) |
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{ |
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$file_name = $this->_config_path . $file_name; |
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if (!isset($this->_config_data[$file_name])) { |
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$this->_trigger_error_msg("Unknown config file '$file_name'"); |
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return; |
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} |
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|
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return array_keys($this->_config_data[$file_name]["sections"]); |
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} |
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|
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|
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/** |
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* Get all global or section variable names. |
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* |
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* @access public |
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* @param $file_name string config file to get info for |
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* @param $section_name string (optional) section to get info for |
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* @return array an array of variables names from the specified file/section |
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*/ |
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function get_var_names($file_name, $section = NULL) |
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{ |
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if (empty($file_name)) { |
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$this->_trigger_error_msg('Empty config file name'); |
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return; |
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} else if (!isset($this->_config_data[$file_name])) { |
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$this->_trigger_error_msg("Unknown config file '$file_name'"); |
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return; |
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} |
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|
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if (empty($section)) |
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return array_keys($this->_config_data[$file_name]["vars"]); |
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else |
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return array_keys($this->_config_data[$file_name]["sections"][$section]["vars"]); |
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} |
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|
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|
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/** |
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* Clear loaded config data for a certain file or all files. |
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* |
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* @access public |
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* @param $file_name string file to clear config data for |
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*/ |
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function clear($file_name = NULL) |
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{ |
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if ($file_name === NULL) |
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$this->_config_data = array(); |
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else if (isset($this->_config_data[$file_name])) |
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$this->_config_data[$file_name] = array(); |
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} |
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|
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|
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/** |
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* Load a configuration file manually. |
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* |
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* @access public |
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* @param $file_name string file name to load |
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* @param $prepend_path boolean whether current config path should be prepended to the filename |
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*/ |
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function load_file($file_name, $prepend_path = true) |
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{ |
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if ($prepend_path && $this->_config_path != "") |
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$config_file = $this->_config_path . $file_name; |
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else |
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$config_file = $file_name; |
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|
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ini_set('track_errors', true); |
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$fp = @fopen($config_file, "r"); |
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if (!is_resource($fp)) { |
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$this->_trigger_error_msg("Could not open config file '$config_file'"); |
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return; |
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} |
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|
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$contents = fread($fp, filesize($config_file)); |
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fclose($fp); |
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|
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$config_data = array(); |
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|
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/* Get global variables first. */ |
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if (preg_match("/^(.*?)(\n\[|\Z)/s", $contents, $match)) |
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$config_data["vars"] = $this->_parse_config_block($match[1]); |
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|
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/* Get section variables. */ |
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$config_data["sections"] = array(); |
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preg_match_all("/^\[(.*?)\]/m", $contents, $match); |
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foreach ($match[1] as $section) { |
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if ($section{0} == '.' && !$this->read_hidden) |
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continue; |
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if (preg_match("/\[".preg_quote($section)."\](.*?)(\n\[|\Z)/s", $contents, $match)) |
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if ($section{0} == '.') |
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$section = substr($section, 1); |
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$config_data["sections"][$section]["vars"] = $this->_parse_config_block($match[1]); |
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} |
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|
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$this->_config_data[$config_file] = $config_data; |
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} |
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|
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|
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function _parse_config_block($config_block) |
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{ |
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$vars = array(); |
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|
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/* First we grab the multi-line values. */ |
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if (preg_match_all("/^([^=\n]+)=\s*\"{3}(.*?)\"{3}\s*$/ms", $config_block, $match, PREG_SET_ORDER)) { |
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for ($i = 0; $i < count($match); $i++) { |
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$this->_set_config_var($vars, trim($match[$i][1]), $match[$i][2], false); |
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} |
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$config_block = preg_replace("/^[^=\n]+=\s*\"{3}.*?\"{3}\s*$/ms", "", $config_block); |
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} |
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|
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|
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$config_lines = preg_split("/\n+/", $config_block); |
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|
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foreach ($config_lines as $line) { |
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if (preg_match("/^\s*(\.?\w+)\s*=(.*)/", $line, $match)) { |
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$var_value = preg_replace('/^([\'"])(.*)\1$/', '\2', trim($match[2])); |
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$this->_set_config_var($vars, trim($match[1]), $var_value, $this->booleanize); |
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} |
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} |
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|
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return $vars; |
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} |
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|
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function _set_config_var(&$container, $var_name, $var_value, $booleanize) |
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{ |
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if ($var_name{0} == '.') { |
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if (!$this->read_hidden) |
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return; |
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else |
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$var_name = substr($var_name, 1); |
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} |
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|
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if (!preg_match("/^[a-zA-Z_]\w*$/", $var_name)) { |
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$this->_trigger_error_msg("Bad variable name '$var_name'"); |
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return; |
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} |
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|
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if ($booleanize) { |
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if (preg_match("/^(on|true|yes)$/i", $var_value)) |
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$var_value = true; |
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else if (preg_match("/^(off|false|no)$/i", $var_value)) |
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$var_value = false; |
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} |
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|
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if (!isset($container[$var_name]) || $this->overwrite) |
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$container[$var_name] = $var_value; |
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else { |
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settype($container[$var_name], 'array'); |
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$container[$var_name][] = $var_value; |
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} |
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} |
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|
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function _trigger_error_msg($error_msg, $error_type = E_USER_WARNING) |
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{ |
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trigger_error("Config_File error: $error_msg", $error_type); |
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} |
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} |
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|
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?> |
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