Add lowercase variants to the autoloader for legacy history blob classes

Blobs in the text table created by MediaWiki <1.5 running on PHP 4 had class
names coerced to lowercase. In order to succcessfully resolve these class
names, the autoloader creates a copy of the autoload class array with
lowercased keys, which is pretty inefficient. So instead, make sure the
auto-generated autoload map contains lowercase variants for these specific
classes.

Bug: T166759
Change-Id: I6d751ef516e936e04c056d70a1ecd17960a39ceb

diff --git a/autoload.php b/autoload.php
index a489b8b..83f2519 100644 (file)
--- a/autoload.php
+++ b/autoload.php
@@ -1706,5 +1706,8 @@ $wgAutoloadLocalClasses = [
        'ZhConverter' => __DIR__ . '/languages/classes/LanguageZh.php',
        'ZipDirectoryReader' => __DIR__ . '/includes/utils/ZipDirectoryReader.php',
        'ZipDirectoryReaderError' => __DIR__ . '/includes/utils/ZipDirectoryReaderError.php',
+       'concatenatedgziphistoryblob' => __DIR__ . '/includes/HistoryBlob.php',
+       'historyblobcurstub' => __DIR__ . '/includes/HistoryBlob.php',
+       'historyblobstub' => __DIR__ . '/includes/HistoryBlob.php',
        'profile_point' => __DIR__ . '/profileinfo.php',
 ];

diff --git a/includes/HistoryBlob.php b/includes/HistoryBlob.php
index 51bd7a9..14d22ec 100644 (file)
--- a/includes/HistoryBlob.php
+++ b/includes/HistoryBlob.php
@@ -699,3 +699,16 @@ class DiffHistoryBlob implements HistoryBlob {
        }
 
 }
+
+// @codingStandardsIgnoreStart
+if ( false ) {
+       // Blobs generated by MediaWiki < 1.5 on PHP 4 were serialized with the
+       // class name coerced to lowercase. We can improve efficiency by adding
+       // autoload entries for the lowercase variants of these classes (T166759).
+       // The code below is never executed, but it is picked up by the AutoloadGenerator
+       // parser, which scans for class_alias() calls.
+       class_alias( 'ConcatenatedGzipHistoryBlob', 'concatenatedgziphistoryblob' );
+       class_alias( 'HistoryBlobCurStub', 'historyblobcurstub' );
+       class_alias( 'HistoryBlobStub', 'historyblobstub' );
+}
+// @codingStandardsIgnoreEnd