MediaWiki 1.30.2

[autoinstallsdev/mediawiki.git] / includes / config / GlobalVarConfig.php

diff --git a/includes/config/GlobalVarConfig.php b/includes/config/GlobalVarConfig.php
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+++ b/includes/config/GlobalVarConfig.php
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+<?php
+/**
+ * Copyright 2014
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+/**
+ * Accesses configuration settings from $GLOBALS
+ *
+ * @since 1.23
+ */
+class GlobalVarConfig implements Config {
+
+       /**
+        * Prefix to use for configuration variables
+        * @var string
+        */
+       private $prefix;
+
+       /**
+        * Default builder function
+        * @return GlobalVarConfig
+        */
+       public static function newInstance() {
+               return new GlobalVarConfig();
+       }
+
+       public function __construct( $prefix = 'wg' ) {
+               $this->prefix = $prefix;
+       }
+
+       /**
+        * @inheritDoc
+        */
+       public function get( $name ) {
+               if ( !$this->has( $name ) ) {
+                       throw new ConfigException( __METHOD__ . ": undefined option: '$name'" );
+               }
+               return $this->getWithPrefix( $this->prefix, $name );
+       }
+
+       /**
+        * @inheritDoc
+        */
+       public function has( $name ) {
+               return $this->hasWithPrefix( $this->prefix, $name );
+       }
+
+       /**
+        * Get a variable with a given prefix, if not the defaults.
+        *
+        * @param string $prefix Prefix to use on the variable, if one.
+        * @param string $name Variable name without prefix
+        * @return mixed
+        */
+       protected function getWithPrefix( $prefix, $name ) {
+               return $GLOBALS[$prefix . $name];
+       }
+
+       /**
+        * Check if a variable with a given prefix is set
+        *
+        * @param string $prefix Prefix to use on the variable
+        * @param string $name Variable name without prefix
+        * @return bool
+        */
+       protected function hasWithPrefix( $prefix, $name ) {
+               $var = $prefix . $name;
+               return array_key_exists( $var, $GLOBALS );
+       }
+}