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321 lines
8.6 KiB
PHP
321 lines
8.6 KiB
PHP
<?php
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require_once "PEAR.php";
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/**
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* Config_File class.
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*
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* @version 1.2.3
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* @author Andrei Zmievski <andrei@ispi.net>
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* @access public
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*
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* Copyright: 2001 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@ispi.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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class Config_File extends PEAR {
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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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* 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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/* 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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* 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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$this->PEAR();
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if (substr(PHP_OS, 1, 3) == "WIN")
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$this->_separator = "\\";
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else
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$this->_separator = "/";
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if (isset($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 $config_path string path to the config files
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* @access public
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*/
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function set_path($config_path)
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{
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if (!is_string($config_path) ||
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($config_path != ""
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&& !is_dir($config_path))) {
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return new Config_File_Error("Bad config file path '$config_path'");
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}
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if ($config_path != "")
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$this->_config_path = $config_path . $this->_separator;
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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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return new Config_File_Error('Empty config file name');
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else {
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if ($this->_config_path != "")
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$file_name = $this->_config_path . $this->_separator . $file_name;
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if (!isset($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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{
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return $this->_config_data[$file_name]["vars"][$var_name];
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}
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else
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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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if (empty($section_name))
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return $this->_config_data[$file_name]["vars"];
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else
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return $this->_config_data[$file_name]["sections"][$section_name]["vars"];
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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 $result;
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}
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/**
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* Get all loaded config file names.
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*
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* @access public
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* @return array an array of loaded config file names
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*/
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function get_file_names()
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{
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return array_keys($this->_config_data);
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}
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/**
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* 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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if ($this->_config_path != "")
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$file_name = $this->_config_path . $this->_separator . $file_name;
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if (!isset($this->_config_data[$file_name]))
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return new Config_File_Error("Unknown config file '$file_name'");
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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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* @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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return new Config_File_Error('Empty config file name');
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else if (!isset($this->_config_data[$file_name]))
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return new Config_File_Error("Unknown config file '$file_name'");
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if (empty($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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* @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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* 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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global $php_errormsg;
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if ($prepend_path && $this->_config_path != "")
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$config_file = $this->_config_path . $this->_separator . $file_name;
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else
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$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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return new Config_File_Error($php_errormsg);
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$contents = fread($fp, filesize($config_file));
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fclose($fp);
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$config_data = array();
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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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/* 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 (preg_match("/\[".preg_quote($section)."\](.*?)(\n\[|\Z)/s", $contents, $match))
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$config_data["sections"][$section]["vars"] = $this->_parse_config_block($match[1]);
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}
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$this->_config_data[$config_file] = $config_data;
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}
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function _parse_config_block($config_block)
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{
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$vars = array();
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/* First we grab the multi-line values. */
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if (preg_match_all("/^([^=\n]+)=\s*\"{3}(.*?)\"{3}\s*$/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", "", $config_block);
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}
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$config_lines = preg_split("/\n+/", $config_block);
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foreach ($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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return $vars;
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}
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function _set_config_var(&$container, $var_name, $var_value, $booleanize)
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{
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if (!preg_match("/^[a-zA-Z_]\w*$/", $var_name))
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return new Config_File_Error("Bad variable name '$var_name'");
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if ($booleanize) {
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if (preg_match("/^on|true|yes$/", $var_value))
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$var_value = true;
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else if (preg_match("/^off|false|no$/", $var_value))
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$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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/** @exclude */
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class Config_File_Error extends PEAR_Error {
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var $error_message_prefix = 'Config_File: ';
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function Config_File_Error($message,
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$code = 0,
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$mode = PEAR_ERROR_PRINT,
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$level = E_USER_NOTICE)
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{
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$this->PEAR_Error($message."\n", $code, $mode, $level);
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}
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}
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?>
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