Wiki: allows single section edit (#2222).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@7829 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/wiki_formatting.rb

@@ -17,6 +17,8 @@
 
 module Redmine
   module WikiFormatting
+    class StaleSectionError < Exception; end
+
     @@formatters = {}
 
     class << self
@@ -29,6 +31,10 @@ module Redmine
         @@formatters[name.to_s] = {:formatter => formatter, :helper => helper}
       end
 
+      def formatter
+        formatter_for(Setting.text_formatting)
+      end
+
       def formatter_for(name)
         entry = @@formatters[name.to_s]
         (entry && entry[:formatter]) || Redmine::WikiFormatting::NullFormatter::Formatter
@@ -43,7 +49,7 @@ module Redmine
         @@formatters.keys.map
       end
 
-      def to_html(format, text, options = {}, &block)
+      def to_html(format, text, options = {})
         text = if Setting.cache_formatted_text? && text.size > 2.kilobyte && cache_store && cache_key = cache_key_for(format, options[:object], options[:attribute])
           # Text retrieved from the cache store may be frozen
           # We need to dup it so we can do in-place substitutions with gsub!
@@ -53,9 +59,6 @@ module Redmine
         else
           formatter_for(format).new(text).to_html
         end
-        if block_given?
-          execute_macros(text, block)
-        end
         text
       end
 
@@ -70,33 +73,6 @@ module Redmine
       def cache_store
         ActionController::Base.cache_store
       end
-
-      MACROS_RE = /
-                    (!)?                        # escaping
-                    (
-                    \{\{                        # opening tag
-                    ([\w]+)                     # macro name
-                    (\(([^\}]*)\))?             # optional arguments
-                    \}\}                        # closing tag
-                    )
-                  /x unless const_defined?(:MACROS_RE)
-
-      # Macros substitution
-      def execute_macros(text, macros_runner)
-        text.gsub!(MACROS_RE) do
-          esc, all, macro = $1, $2, $3.downcase
-          args = ($5 || '').split(',').each(&:strip)
-          if esc.nil?
-            begin
-              macros_runner.call(macro, args)
-            rescue => e
-              "<div class=\"flash error\">Error executing the <strong>#{macro}</strong> macro (#{e})</div>"
-            end || all
-          else
-            all
-          end
-        end
-      end
     end
 
     # Default formatter module

lib/redmine/wiki_formatting/textile/formatter.rb

@@ -16,6 +16,7 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 require 'redcloth3'
+require 'digest/md5'
 
 module Redmine
   module WikiFormatting
@@ -38,6 +39,68 @@ module Redmine
           super(*RULES).to_s
         end
 
+        def get_section(index)
+          section = extract_sections(index)[1]
+          hash = Digest::MD5.hexdigest(section)
+          return section, hash
+        end
+
+        def update_section(index, update, hash=nil)
+          t = extract_sections(index)
+          if hash.present? && hash != Digest::MD5.hexdigest(t[1])
+            raise Redmine::WikiFormatting::StaleSectionError
+          end
+          t[1] = update unless t[1].blank?
+          t.reject(&:blank?).join "\n\n"
+        end
+
+        def extract_sections(index)
+          @pre_list = []
+          text = self.dup
+          rip_offtags text
+          before = ''
+          s = ''
+          after = ''
+          i = 0
+          l = 1
+          started = false
+          ended = false
+          text.scan(/(((?:.*?)(\A|\r?\n\r?\n))(h(\d+)(#{A}#{C})\.(?::(\S+))? (.*?)$)|.*)/m).each do |all, content, lf, heading, level|
+            if heading.nil?
+              if ended
+                after << all
+              elsif started
+                s << all
+              else
+                before << all
+              end
+              break
+            end
+            i += 1
+            if ended
+              after << all
+            elsif i == index
+              l = level.to_i
+              before << content
+              s << heading
+              started = true
+            elsif i > index
+              s << content
+              if level.to_i > l
+                s << heading
+              else
+                after << heading
+                ended = true
+              end
+            else
+              before << all
+            end
+          end
+          sections = [before.strip, s.strip, after.strip]
+          sections.each {|section| smooth_offtags section}
+          sections
+        end
+
       private
 
         # Patch for RedCloth.  Fixed in RedCloth r128 but _why hasn't released it yet.