From 8a02e4379148f5aa4936f4ee57a327359808901d Mon Sep 17 00:00:00 2001
From: =?utf8?q?Bartosz=20Dziewo=C5=84ski?= <matma.rex@gmail.com>
Date: Fri, 9 Oct 2015 12:57:06 +0200
Subject: [PATCH] mediawiki.jqueryMsg: Support {{ns:}}

Often used in links like [[{{ns:template}}:Foo]], in order for the
link to use namespace name in wiki content language rather than
localised to user language.

Change-Id: Icc360724c75755a6ffc31792d8439cba142642ae
---
 .../src/mediawiki/mediawiki.jqueryMsg.js      | 16 +++++++
 .../mediawiki/mediawiki.jqueryMsg.test.js     | 46 ++++++++++++++++++-
 2 files changed, 61 insertions(+), 1 deletion(-)

diff --git a/resources/src/mediawiki/mediawiki.jqueryMsg.js b/resources/src/mediawiki/mediawiki.jqueryMsg.js
index 8957430c3f..de63a18ce9 100644
--- a/resources/src/mediawiki/mediawiki.jqueryMsg.js
+++ b/resources/src/mediawiki/mediawiki.jqueryMsg.js
@@ -1227,6 +1227,22 @@
 			return mw.jqueryMsg.getMessageFunction()( msg.charAt( 0 ).toLowerCase() + msg.slice( 1 ) );
 		},
 
+		/**
+		 * Get localized namespace name from canonical name or namespace number.
+		 * Invoked by putting `{{ns:foo}}` into a message
+		 *
+		 * @param {Array} nodes List of nodes
+		 * @return {string} Localized namespace name
+		 */
+		ns: function ( nodes ) {
+			var ns = $.trim( textify( nodes[ 0 ] ) );
+			if ( !/^\d+$/.test( ns ) ) {
+				ns = mw.config.get( 'wgNamespaceIds' )[ ns.replace( / /g, '_' ).toLowerCase() ];
+			}
+			ns = mw.config.get( 'wgFormattedNamespaces' )[ ns ];
+			return ns || '';
+		},
+
 		/**
 		 * Takes an unformatted number (arab, no group separators and . as decimal separator)
 		 * and outputs it in the localized digit script and formatted with decimal
diff --git a/tests/qunit/suites/resources/mediawiki/mediawiki.jqueryMsg.test.js b/tests/qunit/suites/resources/mediawiki/mediawiki.jqueryMsg.test.js
index 1d44cc1e00..4f273bc5f6 100644
--- a/tests/qunit/suites/resources/mediawiki/mediawiki.jqueryMsg.test.js
+++ b/tests/qunit/suites/resources/mediawiki/mediawiki.jqueryMsg.test.js
@@ -34,7 +34,21 @@
 			mw.language = this.originalMwLanguage;
 		},
 		config: {
-			wgArticlePath: '/wiki/$1'
+			wgArticlePath: '/wiki/$1',
+			// jscs:disable requireCamelCaseOrUpperCaseIdentifiers
+			wgNamespaceIds: {
+				template: 10,
+				template_talk: 11,
+				// Localised
+				szablon: 10,
+				dyskusja_szablonu: 11
+			},
+			// jscs:enable requireCamelCaseOrUpperCaseIdentifiers
+			wgFormattedNamespaces: {
+				// Localised
+				10: 'Szablon',
+				11: 'Dyskusja szablonu'
+			}
 		},
 		// Messages that are reused in multiple tests
 		messages: {
@@ -659,6 +673,36 @@
 		);
 	} );
 
+	QUnit.test( 'Ns', 4, function ( assert ) {
+		mw.messages.set( 'ns-template-talk', '{{ns:Template talk}}' );
+		assert.equal(
+			formatParse( 'ns-template-talk' ),
+			'Dyskusja szablonu',
+			'ns: returns localised namespace when used with a canonical namespace name'
+		);
+
+		mw.messages.set( 'ns-10', '{{ns:10}}' );
+		assert.equal(
+			formatParse( 'ns-10' ),
+			'Szablon',
+			'ns: returns localised namespace when used with a namespace number'
+		);
+
+		mw.messages.set( 'ns-unknown', '{{ns:doesnt-exist}}' );
+		assert.equal(
+			formatParse( 'ns-unknown' ),
+			'',
+			'ns: returns empty string for unknown namespace name'
+		);
+
+		mw.messages.set( 'ns-in-a-link', '[[{{ns:template}}:Foo]]' );
+		assert.equal(
+			formatParse( 'ns-in-a-link' ),
+			'<a title="Szablon:Foo" href="/wiki/Szablon:Foo">Szablon:Foo</a>',
+			'ns: works when used inside a wikilink'
+		);
+	} );
+
 	// Tests that getMessageFunction is used for non-plain messages with curly braces or
 	// square brackets, but not otherwise.
 	QUnit.test( 'mw.Message.prototype.parser monkey-patch', 22, function ( assert ) {
-- 
2.20.1