From b856d3487e3912965bac425891ea570447efd8d5 Mon Sep 17 00:00:00 2001
From: Daniel Kraus <bovender@bovender.de>
Date: Thu, 31 Aug 2017 20:53:18 +0200
Subject: [PATCH] Add $wgLinkTitlesSameNamespace option.

---
 extension.json       |  3 ++-
 includes/Config.php  |  9 ++++++++-
 includes/Targets.php | 17 +++++++++++++----
 3 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/extension.json b/extension.json
index cdb3e3f..00057fd 100644
--- a/extension.json
+++ b/extension.json
@@ -30,7 +30,8 @@
                 "LinkTitlesWordEndOnly": true,
                 "LinkTitlesSpecialPageReloadAfter": 1,
                 "LinkTitlesSourceNamespaces": [],
-                "LinkTitlesTargetNamespaces": []
+                "LinkTitlesTargetNamespaces": [],
+                "LinkTitlesSameNamespace": true
         },
         "AutoloadClasses": {
                 "LinkTitles\\Extension": "includes/Extension.php",
diff --git a/includes/Config.php b/includes/Config.php
index 28a70e5..0940cd2 100644
--- a/includes/Config.php
+++ b/includes/Config.php
@@ -163,6 +163,12 @@ class Config {
 	 */
 	public $specialPageReloadAfter;
 
+	/**
+	 * Whether to link to pages in the same namespace (default is true).
+	 * @var bool $sameNamespace;
+	 */
+	public $sameNamespace;
+
 	public $enableConsoleOutput;
 	public $enableDebugConsoleOutput;
 
@@ -180,6 +186,7 @@ class Config {
 		global $wgLinkTitlesBlackList;
 		global $wgLinkTitlesSourceNamespaces;
 		global $wgLinkTitlesTargetNamespaces;
+		global $wgLinkTitlesSameNamespace;
 		global $wgLinkTitlesFirstOnly;
 		global $wgLinkTitlesSmartMode;
 		global $wgCapitalLinks;
@@ -197,6 +204,7 @@ class Config {
 		$this->blackList = $wgLinkTitlesBlackList;
 		$this->sourceNamespaces = $wgLinkTitlesSourceNamespaces ? $wgLinkTitlesSourceNamespaces : [ NS_MAIN ];
 		$this->targetNamespaces = $wgLinkTitlesTargetNamespaces;
+		$this->sameNamespace = $wgLinkTitlesSameNamespace;
 		$this->firstOnly = $wgLinkTitlesFirstOnly;
 		$this->smartMode = $wgLinkTitlesSmartMode;
 		$this->capitalLinks = $wgCapitalLinks; // MediaWiki global variable
@@ -210,5 +218,4 @@ class Config {
 		$this->enableConsoleOutput = false;
 		$this->enableDebugConsoleOutput = false;
 	}
-
 }
diff --git a/includes/Targets.php b/includes/Targets.php
index 3a37472..144c056 100644
--- a/includes/Targets.php
+++ b/includes/Targets.php
@@ -89,7 +89,6 @@ class Targets {
 	 * Fetches the page titles from the database.
 	 */
 	private function fetch() {
-
 		( $this->config->preferShortTitles ) ? $sortOrder = 'ASC' : $sortOrder = 'DESC';
 
 		// Build a blacklist of pages that are not supposed to be link
@@ -101,9 +100,19 @@ class Targets {
 			$blackList = null;
 		}
 
-		// Build our weight list. Make sure current namespace is first element
-		$namespaces = array_diff( $this->config->targetNamespaces, [ $this->sourceNamespace ] );
-		array_unshift( $namespaces,  $this->sourceNamespace );
+		if ( $this->config->sameNamespace ) {
+			// Build our weight list. Make sure current namespace is first element
+			$namespaces = array_diff( $this->config->targetNamespaces, [ $this->sourceNamespace ] );
+			array_unshift( $namespaces, $this->sourceNamespace );
+		} else {
+			$namespaces = $this->config->targetNamespaces;
+		}
+
+		if ( !$namespaces) {
+			// If there are absolutely no target namespaces (not even the one of the
+			// source page), we can just return.
+			return;
+		}
 
 		// No need for sanitiy check. we are sure that we have at least one element in the array
 		$weightSelect = "CASE page_namespace ";