From 9c71f59061f7a2ffcb676d75f3c87522ec43eff3 Mon Sep 17 00:00:00 2001
From: Shish <shish@shishnet.org>
Date: Sun, 24 Aug 2014 16:55:00 +0100
Subject: [PATCH] [anchor] bbcode tag, to make linking to parts of a page
 easier

---
 ext/bbcode/main.php | 2 ++
 ext/bbcode/test.php | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/ext/bbcode/main.php b/ext/bbcode/main.php
index 1fe39202..d30d89db 100644
--- a/ext/bbcode/main.php
+++ b/ext/bbcode/main.php
@@ -39,6 +39,7 @@ class BBCode extends FormatterExtension {
 		}
 		$text = preg_replace('!^&gt;&gt;([^\d].+)!', '<blockquote><small>$1</small></blockquote>', $text);
 		$text = preg_replace('!&gt;&gt;(\d+)(#c?\d+)?!s', '<a class="shm-clink" data-clink-sel="$2" href="'.make_link('post/view/$1$2').'">&gt;&gt;$1$2</a>', $text);
+		$text = preg_replace('!\[anchor=(.*?)\](.*?)\[/anchor\]!s', '<a name="bb-$1">$2</a>', $text);  // add "bb-" to avoid clashing with eg #top
 		$text = preg_replace('!\[url=site://(.*?)(#c\d+)?\](.*?)\[/url\]!s', '<a class="shm-clink" data-clink-sel="$2" href="'.make_link('$1$2').'">$3</a>', $text);
 		$text = preg_replace('!\[url\]site://(.*?)(#c\d+)?\[/url\]!s', '<a class="shm-clink" data-clink-sel="$2" href="'.make_link('$1$2').'">$1$2</a>', $text);
 		$text = preg_replace('!\[url=((?:https?|ftp|irc|mailto)://.*?)\](.*?)\[/url\]!s', '<a href="$1">$2</a>', $text);
@@ -77,6 +78,7 @@ class BBCode extends FormatterExtension {
 		) as $el) {
 			$text = preg_replace("!\[$el\](.*?)\[/$el\]!s", '$1', $text);
 		}
+		$text = preg_replace("!\[anchor=(.*?)\](.*?)\[/anchor\]!s", '$2', $text);
 		$text = preg_replace("!\[url=(.*?)\](.*?)\[/url\]!s", '$2', $text);
 		$text = preg_replace("!\[img\](.*?)\[/img\]!s", "", $text);
 		$text = preg_replace("!\[\[([^\|\]]+)\|([^\]]+)\]\]!s", '$2', $text);
diff --git a/ext/bbcode/test.php b/ext/bbcode/test.php
index 14aac004..4e3fd832 100644
--- a/ext/bbcode/test.php
+++ b/ext/bbcode/test.php
@@ -71,6 +71,12 @@ class BBCodeUnitTest extends UnitTestCase {
 			"<a href=\"mailto:spam@shishnet.org\">spam@shishnet.org</a>");
 	}
 
+	public function testAnchor() {
+		$this->assertEqual(
+			$this->filter("[anchor=rules]Rules[/anchor]"),
+			"<a name=\"bb-rules\">Rules</a>");
+	}
+
 	private function filter($in) {
 		$bb = new BBCode();
 		return $bb->format($in);