1 files changed, 25 insertions, 0 deletions
diff --git a/www/wiki/extensions/UploadWizard/resources/uw.units.js b/www/wiki/extensions/UploadWizard/resources/uw.units.js
new file mode 100644
index 00000000..c8ee73ee
--- /dev/null
+++ b/www/wiki/extensions/UploadWizard/resources/uw.units.js
@@ -0,0 +1,25 @@
+( function ( mw, uw ) {
+
+	var scaleMsgKeys = [ 'size-bytes', 'size-kilobytes', 'size-megabytes', 'size-gigabytes' ];
+
+	uw.units = {
+		/**
+		 * Format a size in bytes for output, using an appropriate
+		 * unit (bytes, K, MB, GB, or TB) according to the magnitude in question
+		 *
+		 * Units above K get 2 fixed decimal places.
+		 *
+		 * @param {number} size Number of bytes
+		 * @return {string} formatted size
+		 */
+		bytes: function ( size ) {
+			var i = 0;
+			while ( size >= 1024 && i < scaleMsgKeys.length - 1 ) {
+				size /= 1024.0;
+				i++;
+			}
+			return mw.message( scaleMsgKeys[ i ], size.toFixed( i > 1 ? 2 : 0 ) ).text();
+		}
+	};
+
+}( mediaWiki, mediaWiki.uploadWizard ) );