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389 lines
13 KiB
PHP
389 lines
13 KiB
PHP
<?php
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/**
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* Config_File class.
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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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* @link http://smarty.php.net/
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* @version 2.6.9
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* @copyright Copyright: 2001-2005 New Digital Group, Inc.
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* @author Andrei Zmievski <andrei@php.net>
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* @access public
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* @package Smarty
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*/
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/* $Id: Config_File.class.php,v 1.1 2006/05/29 16:38:21 powles Exp $ */
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/**
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* Config file reading class
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* @package Smarty
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*/
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class Config_File {
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/**#@+
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* Options
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* @var boolean
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*/
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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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var $overwrite = true;
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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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var $booleanize = true;
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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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var $read_hidden = true;
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/**
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* Controls whether or not to fix mac or dos formatted newlines.
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* If set to true, \r or \r\n will be changed to \n.
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*/
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var $fix_newlines = true;
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/**#@-*/
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/** @access private */
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var $_config_path = "";
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var $_config_data = array();
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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 string $config_path (optional) path to the config files
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*/
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function Config_File($config_path = NULL)
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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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* Set the path where configuration files can be found.
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*
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* @param string $config_path path to the config files
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*/
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function set_path($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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if(substr($config_path, -1) != DIRECTORY_SEPARATOR) {
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$config_path .= DIRECTORY_SEPARATOR;
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}
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$this->_config_path = $config_path;
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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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* @param string $file_name config file to get info for
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* @param string $section_name (optional) section to get info for
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* @param string $var_name (optional) variable to get info for
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* @return string|array a value or array of values
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*/
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function &get($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($file_name, false);
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}
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if (!empty($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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* Retrieves config info based on the key.
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*
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* @param $file_name string config key (filename/section/var)
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* @return string|array same as get()
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* @uses get() retrieves information from config file and returns it
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*/
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function &get_key($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 $result;
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}
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/**
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* Get all loaded config file names.
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*
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* @return array an array of loaded config file names
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*/
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function get_file_names()
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{
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return array_keys($this->_config_data);
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}
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/**
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* Get all section names from a loaded file.
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*
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* @param string $file_name config file to get section names from
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* @return array an array of section names from the specified file
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*/
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function get_section_names($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 '$file_name'");
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return;
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}
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return array_keys($this->_config_data[$file_name]["sections"]);
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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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* @param string $file_name config file to get info for
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* @param string $section_name (optional) section to get info for
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* @return array an array of variables names from the specified file/section
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*/
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function get_var_names($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 '$file_name'");
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return;
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}
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if (empty($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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* Clear loaded config data for a certain file or all files.
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*
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* @param string $file_name file to clear config data for
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*/
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function clear($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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* Load a configuration file manually.
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*
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* @param string $file_name file name to load
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* @param boolean $prepend_path whether current config path should be
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* prepended to the filename
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*/
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function load_file($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 = $file_name;
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ini_set('track_errors', true);
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$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 false;
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}
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$contents = ($size = filesize($config_file)) ? fread($fp, $size) : '';
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fclose($fp);
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$this->_config_data[$config_file] = $this->parse_contents($contents);
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return true;
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}
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/**
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* Store the contents of a file manually.
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*
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* @param string $config_file file name of the related contents
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* @param string $contents the file-contents to parse
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*/
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function set_file_contents($config_file, $contents)
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{
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$this->_config_data[$config_file] = $this->parse_contents($contents);
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return true;
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}
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/**
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* parse the source of a configuration file manually.
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*
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* @param string $contents the file-contents to parse
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*/
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function parse_contents($contents)
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{
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if($this->fix_newlines) {
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// fix mac/dos formatted newlines
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$contents = preg_replace('!\r\n?!', "\n", $contents);
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}
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$config_data = array();
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$config_data['sections'] = array();
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$config_data['vars'] = array();
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/* reference to fill with data */
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$vars =& $config_data['vars'];
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/* parse file line by line */
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preg_match_all('!^.*\r?\n?!m', $contents, $match);
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$lines = $match[0];
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for ($i=0, $count=count($lines); $i<$count; $i++) {
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$line = $lines[$i];
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if (empty($line)) continue;
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if ( $line{0} == '[' && preg_match('!^\[(.*?)\]!', $line, $match) ) {
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/* section found */
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if ($match[1]{0} == '.') {
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/* hidden section */
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if ($this->read_hidden) {
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$section_name = substr($match[1], 1);
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} else {
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/* break reference to $vars to ignore hidden section */
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unset($vars);
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$vars = array();
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continue;
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}
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} else {
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$section_name = $match[1];
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}
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if (!isset($config_data['sections'][$section_name]))
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$config_data['sections'][$section_name] = array('vars' => array());
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$vars =& $config_data['sections'][$section_name]['vars'];
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continue;
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}
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if (preg_match('/^\s*(\.?\w+)\s*=\s*(.*)/s', $line, $match)) {
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/* variable found */
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$var_name = rtrim($match[1]);
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if (strpos($match[2], '"""') === 0) {
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/* handle multiline-value */
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$lines[$i] = substr($match[2], 3);
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$var_value = '';
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while ($i<$count) {
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if (($pos = strpos($lines[$i], '"""')) === false) {
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$var_value .= $lines[$i++];
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} else {
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/* end of multiline-value */
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$var_value .= substr($lines[$i], 0, $pos);
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break;
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}
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}
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$booleanize = false;
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} else {
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/* handle simple value */
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$var_value = preg_replace('/^([\'"])(.*)\1$/', '\2', rtrim($match[2]));
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$booleanize = $this->booleanize;
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}
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$this->_set_config_var($vars, $var_name, $var_value, $booleanize);
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}
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/* else unparsable line / means it is a comment / means ignore it */
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}
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return $config_data;
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}
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/**#@+ @access private */
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/**
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* @param array &$container
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* @param string $var_name
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* @param mixed $var_value
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* @param boolean $booleanize determines whether $var_value is converted to
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* to true/false
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*/
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function _set_config_var(&$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($var_name, 1);
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}
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if (!preg_match("/^[a-zA-Z_]\w*$/", $var_name)) {
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$this->_trigger_error_msg("Bad variable name '$var_name'");
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return;
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}
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if ($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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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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* @uses trigger_error() creates a PHP warning/error
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* @param string $error_msg
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* @param integer $error_type one of
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*/
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function _trigger_error_msg($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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