diff --git a/commit.go b/commit.go
index 3835322..a97762d 100644
--- a/commit.go
+++ b/commit.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+  "encoding/json"
   "log"
   "io/ioutil"
   "path/filepath"
@@ -10,6 +11,13 @@ type RepoCommits struct {
   Config configCollect
   CommitDesc map[string]string
   CommitContent map[string]Commit
+  Head *CommitNode
+}
+
+type CommitNode struct {
+  Parents []*CommitNode
+  Children []*CommitNode
+  Content Commit
 }
 
 type Commit struct {
@@ -31,8 +39,12 @@ type Commit struct {
 
 func cmdCommit(config configCollect) {
   rc := NewRepoCommits(config)
+
   rc.CollectDescs()
   rc.PrintDescs()
+
+  rc.CollectContent()
+  //rc.BuildGraph()
 }
 
 func NewRepoCommits (config configCollect) *RepoCommits {
@@ -72,3 +84,15 @@ func (rc* RepoCommits) PrintDescs() {
   }
   log.Println("Repo", rc.Config.RepoId, "contains", len(rc.CommitDesc), "commits")
 }
+
+func (rc* RepoCommits) CollectContent() {
+  for id, path := range rc.CommitDesc {
+    data, err := ioutil.ReadFile(path)
+    if err != nil { log.Fatal(err) }
+
+    var c Commit
+    json.Unmarshal(data, &c)
+    rc.CommitContent[id] = c
+    log.Println(rc.CommitContent[id])
+  }
+}