From 7203196212ae78d3723c0df4c661a3c03769135a Mon Sep 17 00:00:00 2001
From: Jean-Philippe Lang <jp_lang@yahoo.fr>
Date: Mon, 15 Mar 2010 19:54:50 +0000
Subject: [PATCH] Do not parse redmine links inside pre/code tags (#1288).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3589 e93f8b46-1217-0410-a6f0-8f06a7374b81
---
 app/helpers/application_helper.rb            | 35 +++++++++++++++++---
 test/unit/helpers/application_helper_test.rb | 27 +++++++++++++++
 2 files changed, 57 insertions(+), 5 deletions(-)

diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index ece92d615..b4eaa91de 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -409,12 +409,37 @@ module ApplicationHelper
     only_path = options.delete(:only_path) == false ? false : true
 
     text = Redmine::WikiFormatting.to_html(Setting.text_formatting, text, :object => obj, :attribute => attr) { |macro, args| exec_macro(macro, obj, args) }
-    
-    [:parse_inline_attachments, :parse_wiki_links, :parse_redmine_links].each do |method_name|
-      send method_name, text, project, obj, attr, only_path, options
+      
+    parse_non_pre_blocks(text) do |text|
+      [:parse_inline_attachments, :parse_wiki_links, :parse_redmine_links].each do |method_name|
+        send method_name, text, project, obj, attr, only_path, options
+      end
     end
-    
-    text
+  end
+  
+  def parse_non_pre_blocks(text)
+    s = StringScanner.new(text)
+    tags = []
+    parsed = ''
+    while !s.eos?
+      s.scan(/(.*?)(<(\/)?(pre|code)(.*?)>|\z)/im)
+      text, full_tag, closing, tag = s[1], s[2], s[3], s[4]
+      if tags.empty?
+        yield text
+      end
+      parsed << text
+      if tag
+        if closing
+          if tags.last == tag.downcase
+            tags.pop
+          end
+        else
+          tags << tag.downcase
+        end
+        parsed << full_tag
+      end
+    end
+    parsed
   end
   
   def parse_inline_attachments(text, project, obj, attr, only_path, options)
diff --git a/test/unit/helpers/application_helper_test.rb b/test/unit/helpers/application_helper_test.rb
index 3be0d7dbd..011df82fe 100644
--- a/test/unit/helpers/application_helper_test.rb
+++ b/test/unit/helpers/application_helper_test.rb
@@ -297,6 +297,33 @@ EXPECTED
     assert_equal expected.gsub(%r{[\r\n\t]}, ''), textilizable(raw).gsub(%r{[\r\n\t]}, '')
   end
   
+  def test_pre_content_should_not_parse_wiki_and_redmine_links
+    raw = <<-RAW
+[[CookBook documentation]]
+  
+#1
+
+<pre>
+[[CookBook documentation]]
+  
+#1
+</pre>
+RAW
+
+    expected = <<-EXPECTED
+<p><a href="/projects/ecookbook/wiki/CookBook_documentation" class="wiki-page">CookBook documentation</a></p>
+<p><a href="/issues/1" class="issue status-1 priority-1" title="Can't print recipes (New)">#1</a></p>
+<pre>
+[[CookBook documentation]]
+
+#1
+</pre>
+EXPECTED
+                                 
+    @project = Project.find(1)
+    assert_equal expected.gsub(%r{[\r\n\t]}, ''), textilizable(raw).gsub(%r{[\r\n\t]}, '')
+  end
+  
   def test_syntax_highlight
     raw = <<-RAW
 <pre><code class="ruby">
-- 
2.39.5