(bug 45512) Add mw.title:getContent()

Bug: 45512
Change-Id: I630033d367a47f7f80809a0918d3e6feede3fe41

engines/LuaCommon/TitleLibrary.php

@@ -13,6 +13,7 @@ class Scribunto_LuaTitleLibrary extends Scribunto_LuaLibraryBase {
 			'newTitle' => array( $this, 'newTitle' ),
 			'makeTitle' => array( $this, 'makeTitle' ),
 			'getUrl' => array( $this, 'getUrl' ),
+			'getContent' => array( $this, 'getContent' ),
 		);
 		$this->getEngine()->registerInterface( 'mw.title.lua', $lib, array(
 			'thisTitle' => $this->returnTitleToLua( $this->getTitle() ),
@@ -195,4 +196,20 @@ class Scribunto_LuaTitleLibrary extends Scribunto_LuaLibraryBase {
 		}
 		return array( call_user_func_array( array( $title, $func ), $args ) );
 	}
+
+	function getContent( $text ) {
+		$title = Title::newFromText( $text );
+		if ( !$title ) {
+			return array( null );
+		}
+		$rev = Revision::newFromTitle( $title );
+		if ( !$rev ) {
+			return array( null );
+		}
+		$content = $rev->getContent();
+		if ( !$content ) {
+			return array( null );
+		}
+		return array( $content->serialize() );
+	}
 }

engines/LuaCommon/lualib/mw.title.lua

@@ -144,6 +144,16 @@ local function makeTitleObject( data )
 		return php.getUrl( self.fullText, 'canonicalUrl', query )
 	end
 
+	function data:getContent()
+		checkSelf( self, 'getContent' )
+		local content = php.getContent( self.fullText )
+		data.getContent = function ( self )
+			checkSelf( self, 'getContent' )
+			return content
+		end
+		return content
+	end
+
 	return setmetatable( obj, {
 		__eq = title.equals,
 		__lt = lt,

tests/engines/LuaCommon/TitleLibraryTest.php

@@ -39,6 +39,13 @@ class Scribunto_LuaTitleLibraryTests extends Scribunto_LuaEngineTestBase {
 	function setUp() {
 		parent::setUp();
 
+		// Page for getContent test
+		$page = WikiPage::factory( Title::newFromText( 'ScribuntoTestPage' ) );
+		$page->doEditContent(
+			new WikitextContent( '{{int:mainpage}}<includeonly>...</includeonly><noinclude>...</noinclude>' ),
+			'Summary'
+		);
+
 		// Note this depends on every iteration of the data provider running with a clean parser
 		$this->getEngine()->getParser()->getOptions()->setExpensiveParserFunctionLimit( 10 );
 

tests/engines/LuaCommon/TitleLibraryTests.lua

@@ -40,6 +40,10 @@ local function test_expensive_cached()
 	return 'did not error'
 end
 
+local function test_getContent()
+	return mw.title.new( 'ScribuntoTestPage' ):getContent()
+end
+
 -- Tests
 local tests = {
 	{ name = 'tostring', func = identity, type = 'ToString',
@@ -257,6 +261,10 @@ local tests = {
 	  }
 	},
 
+	{ name = '.getContent()', func = test_getContent,
+	  expect = { '{{int:mainpage}}<includeonly>...</includeonly><noinclude>...</noinclude>' }
+	},
+
 	{ name = 'expensive functions', func = test_expensive,
 	  expect = 'too many expensive function calls'
 	},