47da150a9c
Also make the same change for GlobalConfigBuilder for consistency, though that's not critical path. Bug: T317951 Change-Id: I9b46e7bc25365d01dbc86a9b2288559cb9e2cb8d
97 lines
2.5 KiB
PHP
97 lines
2.5 KiB
PHP
<?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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* @newable
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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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/**
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* @stable to call
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*
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* @param string $prefix
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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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* @inheritDoc
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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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* @inheritDoc
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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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// (T317951) Don't call array_key_exists unless we have to, as it's slow
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// on PHP 8.1+ for $GLOBALS. When the key is set but is explicitly set
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// to null, we still need to fall back to array_key_exists, but that's
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// rarer.
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return isset( $GLOBALS[$var] ) || array_key_exists( $var, $GLOBALS );
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}
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}
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