146 lines
No EOL
3.6 KiB
PHP
146 lines
No EOL
3.6 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2010, The volkszaehler.org project
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* @package util
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* @license http://www.opensource.org/licenses/gpl-license.php GNU Public License
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*/
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/*
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* This file is part of volkzaehler.org
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*
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* volkzaehler.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* volkzaehler.org 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with volkszaehler.org. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace Volkszaehler\Util;
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/**
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* Static configuration class for loading and storing the configuration to the disk
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*
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* @package util
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* @author Steffen Vogel <info@steffenvogel.de>
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*/
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class Configuration {
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static protected $values = array();
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/**
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* @param string $var A string delimited by dots
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* @param mixed $value A scalar value or array which should be set as the value for $var
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*/
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static public function write($var, $value) {
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if (!is_scalar($value) && !is_array($value)) {
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throw new \Exception('sry we can\'t store this datatype in the configuration');
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}
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$values =& self::$values;
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$tree = explode('.', $var);
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foreach ($tree as $part) {
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$values =& $values[$part]; // TODO use array_merge_recursive()
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}
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$values = $value;
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}
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/**
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*
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* @param string $var A string delimited by dots
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* @return mixed the configuration value
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*/
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static public function read($var = NULL) {
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$tree = explode('.', $var);
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if (is_null($var)) {
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return self::$values;
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}
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$values = self::$values;
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foreach ($tree as $part) {
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$values = $values[$part];
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}
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return $values;
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}
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/**
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*
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* @param string $var A string delimited by dots
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*/
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static public function delete($var) {
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$tree = explode('.', $var);
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$values =& self::$values;
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foreach ($tree as $part) {
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$values =& $values[$part];
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}
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unset($values);
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}
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/**
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* loading configuration from fule
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*
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* @param string $filename A string pointing to a file on the filesystem
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*/
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static public function load($filename) {
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$filename .= '.php';
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if (!file_exists($filename)) {
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throw new \Exception('configuration file not found: ' . $filename);
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}
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include $filename;
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if (!isset($config)) {
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throw new \Exception('no variable $config found in ' . $filename);
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}
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self::$values = $config;
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}
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/**
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*
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* @param string $filename A string pointing to a file on the filesystem
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* @return boolean TRUE on success
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*/
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static public function store($filename) {
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$filename .= '.php';
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$delcaration = '';
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foreach (self::$values as $key => $value) {
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$export = var_export($value, TRUE);
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$export = preg_replace('/=>\s+array/', '=> array', $export);
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$export = str_replace(" ", "\t", $export);
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$declaration .= '$config[\'' . $key . '\'] = ' . $export . ';' . PHP_EOL . PHP_EOL;
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}
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$content = <<<EOT
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<?php
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/**
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* That's the volkszaehler.org configuration file.
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* Please take care of the following rules:
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* - you are allowed to edit it by your own
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* - anything else than the \$config declaration
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* will maybe be removed during the reconfiguration
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* by the configuration parser!
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* - only literals are allowed as parameters
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* - expressions will be evaluated by the parser
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* and saved as literals
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*/
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$declaration?>
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EOT;
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return file_put_contents($filename, $content);
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}
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}
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?>
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