Move unified diff parser out of the scm abstract adapter so it can be reused for viewing attached diffs (#1403).

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1513 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/repository.rb

@@ -55,8 +55,8 @@ class Repository < ActiveRecord::Base
     scm.entries(path, identifier)
   end
   
-  def diff(path, rev, rev_to, type)
-    scm.diff(path, rev, rev_to, type)
+  def diff(path, rev, rev_to)
+    scm.diff(path, rev, rev_to)
   end
   
   # Default behaviour: we search in cached changesets

app/models/repository/cvs.rb

@@ -53,7 +53,7 @@ class Repository::Cvs < Repository
     entries
   end
   
-  def diff(path, rev, rev_to, type)
+  def diff(path, rev, rev_to)
     #convert rev to revision. CVS can't handle changesets here
     diff=[]
     changeset_from=changesets.find_by_revision(rev)
@@ -76,7 +76,7 @@ class Repository::Cvs < Repository
         unless revision_to
           revision_to=scm.get_previous_revision(revision_from)
         end
-        diff=diff+scm.diff(change_from.path, revision_from, revision_to, type)
+        diff=diff+scm.diff(change_from.path, revision_from, revision_to)
       end
     end
     return diff

app/models/repository/darcs.rb

@@ -46,14 +46,14 @@ class Repository::Darcs < Repository
     entries
   end
   
-  def diff(path, rev, rev_to, type)
+  def diff(path, rev, rev_to)
     patch_from = changesets.find_by_revision(rev)
     return nil if patch_from.nil?
     patch_to = changesets.find_by_revision(rev_to) if rev_to
     if path.blank?
       path = patch_from.changes.collect{|change| change.path}.join(' ')
     end
-    patch_from ? scm.diff(path, patch_from.scmid, patch_to ? patch_to.scmid : nil, type) : nil
+    patch_from ? scm.diff(path, patch_from.scmid, patch_to ? patch_to.scmid : nil) : nil
   end
   
   def fetch_changesets