ldapsaisie/public_html/includes/class/class.LSconfig.php

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<?php
/*******************************************************************************
* Copyright (C) 2007 Easter-eggs
* http://ldapsaisie.labs.libre-entreprise.org
*
* Author: See AUTHORS file in top-level directory.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
******************************************************************************/
/**
* Object LSconfig
*
* @author Benjamin Renard <brenard@easter-eggs.com>
*/
class LSconfig {
// Configuration Data
private static $data=array();
/**
* Lancement de LSconfig
*
* Chargement initiale des données de configuration à partir des fichiers en
* config.*.php du dossier LS_CONF_DIR
*
* @retval boolean True si tout s'est bien passé, False sinon
**/
public static function start() {
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$files=array('config.inc.php','config.LSaddons.php');
foreach($files as $file) {
if (!LSsession::includeFile(LS_CONF_DIR.'/'.$file)) {
return;
}
}
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if (is_array($GLOBALS['LSconfig'])) {
self :: $data = $GLOBALS['LSconfig'];
self :: $data['LSaddons'] = $GLOBALS['LSaddons'];
return true;
}
return;
}
/**
* Get a specific configuration variable value
*
* @param[in] $var string The configuration variable name
* @param[in] $default mixed The default value to return if configuration variable
* is not set (Default : null)
* @param[in] $cast string The type of expected value. The configuration variable
* value will be cast as this type. Could be : bool, int,
* float or string. (Optional, default : raw value)
* @param[in] $data array The configuration data (optional)
*
* @retval mixed The configuration variable value
**/
public static function get($var, $default=null, $cast=null, $data=null) {
$vars = explode('.', $var);
$value = $default;
if (is_array($vars)) {
$value = (is_array($data)?$data:self :: $data);
foreach ($vars as $v) {
if (!is_array($value) || !isset($value[$v])) {
$value = $default;
break;
}
$value = $value[$v];
}
}
switch($cast) {
case 'bool':
return boolval($value);
case 'int':
return intval($value);
case 'float':
return floatval($value);
case 'string':
return strval($value);
default:
return $value;
}
}
/**
* Get list of keys of a specific configuration variable
*
* @param[in] $var string The configuration variable name
* @param[in] $data array The configuration data (optional)
*
* @retval array An array of the keys of a specific configuration variable
**/
public static function keys($var, $data=null) {
$value = self :: get($var, null, null, $data);
return (is_array($value)?array_keys($value):array());
}
/**
* Get list of configuration variables with their value that matching a specific pattern
*
* The character '*' could replace any part (expect the first one) of the configuration
* variable name. In this case, the keys of the parent value will be iterated to compose
* the result.
*
* @param[in] $pattern string The configuration variable pattern
* @param[in] $default mixed The default value to return if configuration variable
* is not set (optional, see self :: get())
* @param[in] $cast string The type of expected value (optional, see self :: get())
* @param[in] $data array The configuration data (optional, see self :: get())
*
* @retval array The list of matching configuration variables with their value
**/
public static function getMatchingKeys($pattern, $default=null, $cast=null, $data=null, $prefix=null) {
$return = array();
if ($pos = strpos($pattern, '*')) {
// Handle subkey
$root_key = (is_string($prefix)?"$prefix.":"").substr($pattern, 0, ($pos-1));
$suffix = substr($pattern, $pos+2, (strlen($pattern)-$pos));
$subkeys = self :: keys($root_key);
if ($suffix) {
foreach ($subkeys as $subkey)
$return = array_merge($return, self :: getMatchingKeys($suffix, $default, $cast, $data, "$root_key.$subkey"));
}
else {
foreach ($subkeys as $subkey) {
$key = "$root_key.$subkey";
$return[$key] = self :: get($key, $default, $cast, $data);
}
}
}
else {
$key = (is_string($prefix)?"$prefix.":"").$pattern;
$return[$key] = self :: get($key, $default, $cast, $data);
}
return $return;
}
/**
* Définition d'une valeur
*
* @param[in] $var string Le nom de valeur à définir
* @param[in] $val mixed La valeur de la variable
*
* @retval boolean True si tout s'est bien passé, False sinon
**/
public static function set($var,$val) {
$vars=explode('.',$var);
if(is_array($vars)) {
$code='self :: $data';
foreach ($vars as $v) {
$code.='["'.$v.'"]';
}
$code.='=$val;';
return (eval($code)===NULL);
}
return;
}
}