1 files changed, 55 insertions, 0 deletions
diff --git a/includes/title/SubpageImportTitleFactory.php b/includes/title/SubpageImportTitleFactory.php
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+++ b/includes/title/SubpageImportTitleFactory.php
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+<?php
+/**
+ * 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
+ * @license GPL 2+
+ */
+
+/**
+ * A class to convert page titles on a foreign wiki (ForeignTitle objects) into
+ * page titles on the local wiki (Title objects), placing all pages as subpages
+ * of a given root page.
+ */
+class SubpageImportTitleFactory implements ImportTitleFactory {
+	/** @var Title */
+	protected $rootPage;
+
+	/**
+	 * @param Title $rootPage The root page under which all pages should be
+	 * created
+	 */
+	public function __construct( Title $rootPage ) {
+		if ( !MWNamespace::hasSubpages( $rootPage->getNamespace() ) ) {
+			throw new MWException( "The root page you specified, $rootPage, is in a " .
+				"namespace where subpages are not allowed" );
+		}
+		$this->rootPage = $rootPage;
+	}
+
+	/**
+	 * Determines which local title best corresponds to the given foreign title.
+	 * If such a title can't be found or would be locally invalid, null is
+	 * returned.
+	 *
+	 * @param ForeignTitle $foreignTitle The ForeignTitle to convert
+	 * @return Title|null
+	 */
+	public function createTitleFromForeignTitle( ForeignTitle $foreignTitle ) {
+		return Title::newFromText( $this->rootPage->getPrefixedDBkey() . '/' .
+			$foreignTitle->getFullText() );
+	}
+}