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-rw-r--r--includes/utils/Cdb.php163
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diff --git a/includes/utils/Cdb.php b/includes/utils/Cdb.php
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-<?php
-/**
- * Native CDB file reader and writer.
- *
- * 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
- */
-
-/**
- * Read from a CDB file.
- * Native and pure PHP implementations are provided.
- * http://cr.yp.to/cdb.html
- */
-abstract class CdbReader {
- /**
- * The file handle
- */
- protected $handle;
-
- /**
- * Open a file and return a subclass instance
- *
- * @param string $fileName
- *
- * @return CdbReader
- */
- public static function open( $fileName ) {
- return self::haveExtension() ?
- new CdbReaderDBA( $fileName ) :
- new CdbReaderPHP( $fileName );
- }
-
- /**
- * Returns true if the native extension is available
- *
- * @return bool
- */
- public static function haveExtension() {
- if ( !function_exists( 'dba_handlers' ) ) {
- return false;
- }
- $handlers = dba_handlers();
- if ( !in_array( 'cdb', $handlers ) || !in_array( 'cdb_make', $handlers ) ) {
- return false;
- }
-
- return true;
- }
-
- /**
- * Create the object and open the file
- *
- * @param string $fileName
- */
- abstract public function __construct( $fileName );
-
- /**
- * Close the file. Optional, you can just let the variable go out of scope.
- */
- abstract public function close();
-
- /**
- * Get a value with a given key. Only string values are supported.
- *
- * @param string $key
- */
- abstract public function get( $key );
-}
-
-/**
- * Write to a CDB file.
- * Native and pure PHP implementations are provided.
- */
-abstract class CdbWriter {
- /**
- * The file handle
- */
- protected $handle;
-
- /**
- * File we'll be writing to when we're done
- * @var string
- */
- protected $realFileName;
-
- /**
- * File we write to temporarily until we're done
- * @var string
- */
- protected $tmpFileName;
-
- /**
- * Open a writer and return a subclass instance.
- * The user must have write access to the directory, for temporary file creation.
- *
- * @param string $fileName
- *
- * @return CdbWriterDBA|CdbWriterPHP
- */
- public static function open( $fileName ) {
- return CdbReader::haveExtension() ?
- new CdbWriterDBA( $fileName ) :
- new CdbWriterPHP( $fileName );
- }
-
- /**
- * Create the object and open the file
- *
- * @param string $fileName
- */
- abstract public function __construct( $fileName );
-
- /**
- * Set a key to a given value. The value will be converted to string.
- * @param string $key
- * @param string $value
- */
- abstract public function set( $key, $value );
-
- /**
- * Close the writer object. You should call this function before the object
- * goes out of scope, to write out the final hashtables.
- */
- abstract public function close();
-
- /**
- * If the object goes out of scope, close it for sanity
- */
- public function __destruct() {
- if ( isset( $this->handle ) ) {
- $this->close();
- }
- }
-
- /**
- * Are we running on Windows?
- * @return bool
- */
- protected function isWindows() {
- return substr( php_uname(), 0, 7 ) == 'Windows';
- }
-}
-
-/**
- * Exception for Cdb errors.
- * This explicitly doesn't subclass MWException to encourage reuse.
- */
-class CdbException extends Exception {
-}