1 files changed, 131 insertions, 0 deletions
diff --git a/includes/title/MediaWikiPageLinkRenderer.php b/includes/title/MediaWikiPageLinkRenderer.php
new file mode 100644
index 00000000..f46cb5e3
--- /dev/null
+++ b/includes/title/MediaWikiPageLinkRenderer.php
@@ -0,0 +1,131 @@
+<?php
+/**
+ * A service for generating links from page titles
+ *
+ * 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+
+ * @author Daniel Kinzler
+ */
+
+/**
+ * A service for generating links from page titles.
+ *
+ * @see https://www.mediawiki.org/wiki/Requests_for_comment/TitleValue
+ */
+class MediaWikiPageLinkRenderer implements PageLinkRenderer {
+	/**
+	 * @var TitleFormatter
+	 */
+	protected $formatter;
+
+	/**
+	 * @var string
+	 */
+	protected $baseUrl;
+
+	/**
+	 * @note $formatter and $baseUrl are currently not used for generating links,
+	 * since we still rely on the Linker class to generate the actual HTML.
+	 * Once this is reversed so that  Linker becomes a legacy interface to
+	 * HtmlPageLinkRenderer, we will be using them, so it seems prudent to
+	 * already declare the dependency and inject them.
+	 *
+	 * @param TitleFormatter $formatter Formatter for generating the target title string
+	 * @param string $baseUrl (currently unused, pending refactoring of Linker).
+	 *        Defaults to $wgArticlePath.
+	 */
+	public function __construct( TitleFormatter $formatter, $baseUrl = null ) {
+		if ( $baseUrl === null ) {
+			$baseUrl = $GLOBALS['wgArticlePath'];
+		}
+
+		$this->formatter = $formatter;
+		$this->baseUrl = $baseUrl;
+	}
+
+	/**
+	 * Returns the (partial) URL for the given page (including any section identifier).
+	 *
+	 * @param TitleValue $page The link's target
+	 * @param array $params Any additional URL parameters.
+	 *
+	 * @return string
+	 */
+	public function getPageUrl( TitleValue $page, $params = array() ) {
+		//TODO: move the code from Linker::linkUrl here!
+		//The below is just a rough estimation!
+
+		$name = $this->formatter->getPrefixedText( $page );
+		$name = str_replace( ' ', '_', $name );
+		$name = wfUrlencode( $name );
+
+		$url = $this->baseUrl . $name;
+
+		if ( $params ) {
+			$separator = ( strpos( $url, '?' ) ) ? '&' : '?';
+			$url .= $separator . wfArrayToCgi( $params );
+		}
+
+		$fragment = $page->getFragment();
+		if ( $fragment !== '' ) {
+			$url = $url . '#' . wfUrlencode( $fragment );
+		}
+
+		return $url;
+	}
+
+	/**
+	 * Returns an HTML link to the given page, using the given surface text.
+	 *
+	 * @param TitleValue $page The link's target
+	 * @param string $text The link's surface text (will be derived from $page if not given).
+	 *
+	 * @return string
+	 */
+	public function renderHtmlLink( TitleValue $page, $text = null ) {
+		if ( $text === null ) {
+			$text = $this->formatter->getFullText( $page );
+		}
+
+		// TODO: move the logic implemented by Linker here,
+		// using $this->formatter and $this->baseUrl, and
+		// re-implement Linker to use a HtmlPageLinkRenderer.
+		$title = Title::newFromTitleValue( $page );
+		$link = Linker::link( $title, htmlspecialchars( $text ) );
+
+		return $link;
+	}
+
+	/**
+	 * Returns a wikitext link to the given page, using the given surface text.
+	 *
+	 * @param TitleValue $page The link's target
+	 * @param string $text The link's surface text (will be derived from $page if not given).
+	 *
+	 * @return string
+	 */
+	public function renderWikitextLink( TitleValue $page, $text = null ) {
+		if ( $text === null ) {
+			$text = $this->formatter->getFullText( $page );
+		}
+
+		$name = $this->formatter->getFullText( $page );
+
+		return '[[:' . $name . '|' . wfEscapeWikiText( $text ) . ']]';
+	}
+}