From 4ac9fa081a7c045f6a9f1cfc529d82423f485b2e Mon Sep 17 00:00:00 2001
From: Pierre Schmitz <pierre@archlinux.de>
Date: Sun, 8 Dec 2013 09:55:49 +0100
Subject: Update to MediaWiki 1.22.0

---
 .../resourceloader/ResourceLoaderLESSFunctions.php | 67 ++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 includes/resourceloader/ResourceLoaderLESSFunctions.php

(limited to 'includes/resourceloader/ResourceLoaderLESSFunctions.php')

diff --git a/includes/resourceloader/ResourceLoaderLESSFunctions.php b/includes/resourceloader/ResourceLoaderLESSFunctions.php
new file mode 100644
index 00000000..c7570f64
--- /dev/null
+++ b/includes/resourceloader/ResourceLoaderLESSFunctions.php
@@ -0,0 +1,67 @@
+<?php
+/**
+ * PHP-provided functions for LESS; see docs for $wgResourceLoaderLESSFunctions
+ *
+ * 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
+ */
+
+class ResourceLoaderLESSFunctions {
+	/**
+	 * Check if an image file reference is suitable for embedding.
+	 * An image is embeddable if it (a) exists, (b) has a suitable MIME-type,
+	 * (c) does not exceed IE<9 size limit of 32kb. This is a LESS predicate
+	 * function; it returns a LESS boolean value and can thus be used as a
+	 * mixin guard.
+	 *
+	 * @par Example:
+	 * @code
+	 *   .background-image(@url) when(embeddable(@url)) {
+	 *       background-image: url(@url) !ie;
+	 *   }
+	 * @endcode
+	 */
+	public static function embeddable( $frame, $less ) {
+		$base = pathinfo( $less->parser->sourceName, PATHINFO_DIRNAME );
+		$url = $frame[2][0];
+		$file = realpath( $base . '/' . $url );
+		return $less->toBool( $file
+			&& strpos( $url, '//' ) === false
+			&& filesize( $file ) < CSSMin::EMBED_SIZE_LIMIT
+			&& CSSMin::getMimeType( $file ) !== false );
+	}
+
+	/**
+	 * Convert an image URI to a base64-encoded data URI.
+	 *
+	 * @par Example:
+	 * @code
+	 *   .fancy-button {
+	 *       background-image: embed('../images/button-bg.png');
+	 *   }
+	 * @endcode
+	 */
+	public static function embed( $frame, $less ) {
+		$base = pathinfo( $less->parser->sourceName, PATHINFO_DIRNAME );
+		$url = $frame[2][0];
+		$file = realpath( $base . '/' . $url );
+
+		$data = CSSMin::encodeImageAsDataURI( $file );
+		$less->addParsedFile( $file );
+		return 'url(' . $data . ')';
+	}
+}
-- 
cgit v1.2.3-54-g00ecf