Merged r2110 to r2112 (diff limit) from trunk.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/0.8-stable@2132 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/unified_diff.rb

@@ -18,18 +18,30 @@
 module Redmine
   # Class used to parse unified diffs
   class UnifiedDiff < Array  
-    def initialize(diff, type="inline")
-      diff_table = DiffTable.new type
+    def initialize(diff, options={})
+      options.assert_valid_keys(:type, :max_lines)
+      diff_type = options[:type] || 'inline'
+      
+      lines = 0
+      @truncated = false
+      diff_table = DiffTable.new(diff_type)
       diff.each do |line|
         if line =~ /^(---|\+\+\+) (.*)$/
           self << diff_table if diff_table.length > 1
-          diff_table = DiffTable.new type
+          diff_table = DiffTable.new(diff_type)
+        end
+        diff_table.add_line line
+        lines += 1
+        if options[:max_lines] && lines > options[:max_lines]
+          @truncated = true
+          break
         end
-        a = diff_table.add_line line
       end
       self << diff_table unless diff_table.empty?
       self
     end
+    
+    def truncated?; @truncated; end
   end
 
   # Class that represents a file diff