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<?php
namespace MediaWiki\Settings\Config;
use MediaWiki\Config\Config;
use MediaWiki\Config\GlobalVarConfig;
use function array_key_exists;
class GlobalConfigBuilder extends ConfigBuilderBase {
public const DEFAULT_PREFIX = 'wg';
/** @var string */
private $prefix;
/**
* @param string $prefix
*/
public function __construct( string $prefix = self::DEFAULT_PREFIX ) {
$this->prefix = $prefix;
}
protected function has( string $key ): bool {
$var = $this->getVarName( $key );
// (T317951) Don't call array_key_exists unless we have to, as it's slow
// on PHP 8.1+ for $GLOBALS. When the key is set but is explicitly set
// to null, we still need to fall back to array_key_exists, but that's
// rarer.
return isset( $GLOBALS[$var] ) || array_key_exists( $var, $GLOBALS );
}
public function get( string $key ) {
$var = $this->getVarName( $key );
return $GLOBALS[ $var ] ?? null;
}
protected function update( string $key, $value ) {
$var = $this->getVarName( $key );
$GLOBALS[ $var ] = $value;
}
public function setMulti( array $values, array $mergeStrategies = [] ): ConfigBuilder {
// NOTE: It is tempting to do $GLOBALS = array_merge( $GLOBALS, $values ).
// But that no longer works in PHP 8.1!
// See https://wiki.php.net/rfc/restrict_globals_usage
foreach ( $values as $key => $newValue ) {
$var = $this->prefix . $key; // inline getVarName() to avoid function call
// Optimization: Inlined logic from set() for performance
if ( isset( $GLOBALS[$var] ) && array_key_exists( $key, $mergeStrategies ) ) {
$mergeStrategy = $mergeStrategies[$key];
if ( $mergeStrategy && is_array( $newValue ) ) {
$oldValue = $GLOBALS[$var];
if ( $oldValue && is_array( $oldValue ) ) {
$newValue = $mergeStrategy->merge( $oldValue, $newValue );
}
}
}
$GLOBALS[$var] = $newValue;
}
return $this;
}
private function getVarName( string $key ): string {
return $this->prefix . $key;
}
public function build(): Config {
return new GlobalVarConfig( $this->prefix );
}
}
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