Separate leafs and HEAD

commit.go

@@ -16,8 +16,9 @@ type RepoCommits struct {
   Config configCollect
   CommitDesc map[string]string
   CommitContent map[string]*CommitNode
-  Head *CommitNode
   Root *CommitNode
+  Leafs map[*CommitNode]Empty
+  Head *CommitNode
 }
 
 type CommitNode struct {
@@ -58,12 +59,15 @@ func cmdCommit(config configCollect) {
   rc := NewRepoCommits(config)
 
   rc.CollectDescs()
-  rc.PrintDescs()
+  log.Println("Repo contains", len(rc.CommitDesc), "commits")
 
   rc.CollectContent()
   rc.BuildGraph()
-  rc.FindHead()
-  rc.PrintHead()
+  rc.FindLeafs()
+  log.Println("Repo has", len(rc.Leafs), "leafs")
+
+  rc.ChooseHead()
+  log.Println("Proposing following HEAD:\n"+rc.Head.Content.String())
 }
 
 func NewRepoCommits (config configCollect) *RepoCommits {
@@ -71,6 +75,7 @@ func NewRepoCommits (config configCollect) *RepoCommits {
   rc.Config =  config
   rc.CommitDesc = make(map[string]string)
   rc.CommitContent = make(map[string]*CommitNode)
+  rc.Leafs = make(map[*CommitNode]Empty)
   return rc
 }
 
@@ -90,19 +95,6 @@ func (rc* RepoCommits) CollectDescs() {
   }
 }
 
-func (rc* RepoCommits) PrintDescs() {
-  /*limit := 10
-  for id, path := range rc.CommitDesc {
-    log.Println(id, path)
-    limit = limit - 1
-    if limit < 0 { 
-      log.Println("Too many commits, output has been truncated")
-      break
-    }
-  }*/
-  log.Println("Repo", rc.Config.RepoId, "contains", len(rc.CommitDesc), "commits")
-}
-
 func NewCommitNode(c Commit) *CommitNode {
   cn := new(CommitNode)
   cn.Content = c
@@ -153,7 +145,7 @@ func (rc* RepoCommits) BuildGraph() *CommitNode {
   return rc.Root
 }
 
-func (rc* RepoCommits) FindHead() *CommitNode {
+func (rc* RepoCommits) FindLeafs() map[*CommitNode]Empty {
   toProcess := make(map[*CommitNode]Empty)
   toProcess[rc.Root] = empty
 
@@ -164,21 +156,25 @@ func (rc* RepoCommits) FindHead() *CommitNode {
         nextToProcess[ccn] = empty
       }
       if len(cn.Children) == 0 {
-        if rc.Head == nil { 
-          rc.Head = cn 
-        } else { 
-          log.Fatal("More than one HEAD has been found") 
-        }
+        rc.Leafs[cn] = empty
       }
     }
 
     toProcess = nextToProcess
   }
 
-  if rc.Head == nil { log.Fatal("No HEAD has been found") }
-  return rc.Head
+  if len(rc.Leafs) == 0 { log.Fatal("No leafs have been found") }
+  return rc.Leafs
 }
 
-func (rc* RepoCommits) PrintHead() {
-  log.Println(rc.Head.Content.String())
+func (rc* RepoCommits) ChooseHead() *CommitNode {
+  for cn, _ := range rc.Leafs {
+    if rc.Head == nil { 
+      rc.Head = cn 
+    } else if rc.Head.Content.Ctime < cn.Content.Ctime { 
+      rc.Head = cn 
+    }
+  }
+  if rc.Head == nil { log.Fatal("No HEAD has been found") }
+  return rc.Head
 }