Merged Git support branch (r1200 to r1226).

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1236 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/repository/cvs.rb

@@ -82,9 +82,6 @@ class Repository::Cvs < Repository
   end
   
   def fetch_changesets
-    #not the preferred way with CVS. maybe we should introduce always a cron-job for this
-    last_commit = changesets.maximum(:committed_on)
-    
     # some nifty bits to introduce a commit-id with cvs
     # natively cvs doesn't provide any kind of changesets, there is only a revision per file.
     # we now take a guess using the author, the commitlog and the commit-date.
@@ -94,8 +91,10 @@ class Repository::Cvs < Repository
     # we use a small delta here, to merge all changes belonging to _one_ changeset
     time_delta=10.seconds
     
+    fetch_since = latest_changeset ? latest_changeset.committed_on : nil
     transaction do
-      scm.revisions('', last_commit, nil, :with_paths => true) do |revision|
+      tmp_rev_num = 1
+      scm.revisions('', fetch_since, nil, :with_paths => true) do |revision|
         # only add the change to the database, if it doen't exists. the cvs log
         # is not exclusive at all. 
         unless changes.find_by_path_and_revision(scm.with_leading_slash(revision.paths[0][:path]), revision.paths[0][:revision])
@@ -107,18 +106,16 @@ class Repository::Cvs < Repository
           })
         
           # create a new changeset.... 
-          unless cs 
-            # we use a negative changeset-number here (just for inserting)
+          unless cs
+            # we use a temporaray revision number here (just for inserting)
             # later on, we calculate a continous positive number
-            next_rev = changesets.minimum(:revision)            
-            next_rev = 0 if next_rev.nil? or next_rev > 0 
-            next_rev = next_rev - 1
-            
-            cs=Changeset.create(:repository => self,
-            :revision => next_rev, 
-            :committer => revision.author, 
-            :committed_on => revision.time,
-            :comments => revision.message)
+            latest = changesets.find(:first, :order => 'id DESC')
+            cs = Changeset.create(:repository => self,
+                                  :revision => "_#{tmp_rev_num}", 
+                                  :committer => revision.author, 
+                                  :committed_on => revision.time,
+                                  :comments => revision.message)
+            tmp_rev_num += 1
           end
         
           #convert CVS-File-States to internal Action-abbrevations
@@ -139,12 +136,13 @@ class Repository::Cvs < Repository
         end
       end
       
-      next_rev = [changesets.maximum(:revision) || 0, 0].max
-      changesets.find(:all, :conditions=>["revision < 0"], :order=>"committed_on ASC").each() do |changeset|
-        next_rev = next_rev + 1
-        changeset.revision = next_rev
-        changeset.save!
+      # Renumber new changesets in chronological order
+      c = changesets.find(:first, :order => 'committed_on DESC, id DESC', :conditions => "revision NOT LIKE '_%'")
+      next_rev = c.nil? ? 1 : (c.revision.to_i + 1)
+      changesets.find(:all, :order => 'committed_on ASC, id ASC', :conditions => "revision LIKE '_%'").each do |changeset|
+        changeset.update_attribute :revision, next_rev
+        next_rev += 1
       end
-    end
+    end # transaction
   end
 end