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<?php |
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/** |
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* Copyright 2014 |
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* |
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* This program 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 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program 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 along |
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* with this program; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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* http://www.gnu.org/copyleft/gpl.html |
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* |
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* @file |
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*/ |
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/** |
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* Accesses configuration settings from $GLOBALS |
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* |
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* @since 1.23 |
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*/ |
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class GlobalVarConfig implements Config { |
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/** |
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* Prefix to use for configuration variables |
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* @var string |
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*/ |
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private $prefix; |
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/** |
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* Default builder function |
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* @return GlobalVarConfig |
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*/ |
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public static function newInstance() { |
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return new GlobalVarConfig(); |
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} |
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public function __construct( $prefix = 'wg' ) { |
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$this->prefix = $prefix; |
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} |
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/** |
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* @see Config::get |
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*/ |
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public function get( $name ) { |
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if ( !$this->has( $name ) ) { |
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throw new ConfigException( __METHOD__ . ": undefined option: '$name'" ); |
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} |
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return $this->getWithPrefix( $this->prefix, $name ); |
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} |
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/** |
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* @see Config::has |
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*/ |
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public function has( $name ) { |
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return $this->hasWithPrefix( $this->prefix, $name ); |
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} |
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/** |
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* Get a variable with a given prefix, if not the defaults. |
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* |
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* @param string $prefix Prefix to use on the variable, if one. |
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* @param string $name Variable name without prefix |
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* @return mixed |
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*/ |
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protected function getWithPrefix( $prefix, $name ) { |
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return $GLOBALS[$prefix . $name]; |
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} |
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/** |
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* Check if a variable with a given prefix is set |
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* |
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* @param string $prefix Prefix to use on the variable |
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* @param string $name Variable name without prefix |
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* @return bool |
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*/ |
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protected function hasWithPrefix( $prefix, $name ) { |
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$var = $prefix . $name; |
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return array_key_exists( $var, $GLOBALS ); |
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} |
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} |
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Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: