Drover's back, baby!

go/src/infra/libs/git/intern.go

+package git
+
+import "fmt"
+import "strings"
+
+// InternResult contians either the ID of the intern'd object, or an error.

[M-A Ruel, 2014/10/18 00:47:05]

contains

[iannucci, 2014/10/20 21:11:57]

Done (removed this struct entirely)

+type InternResult struct {
+        Err error
+        ID  ObjectID
+}
+
+// Intern takes an InternableObject (Blob, Tree, Commit), and writes it into
+// the on-disk Repo.
+func (r *Repo) Intern(obj InternableObject) InternResult {
+        gotData := false
+        var data string
+        if !obj.Complete() {
+                gotData = true
+                data = obj.RawString()
+        }
+
+        if obj.ID() != NoID && r.HasObjectID(obj.ID()) {
+                return InternResult{ID: obj.ID()}
+        }
+
+        switch obj.Type() {
+        case "commit", "tree", "blob":
+        default:
+                return InternResult{Err: fmt.Errorf(
+                        "git.Intern: Unrecognized type %s", obj.Type())}
+        }
+        if !gotData {
+                data = obj.RawString()
+        }
+        cmd := []string{"hash-object", "-t", obj.Type(), "-w", "--stdin"}
+        out, ok := r.RunInput(data, cmd...)
+        if !ok {
+                return InternResult{
+                        Err: fmt.Errorf("error running %s <- %s: not ok", cmd, data),
+                }
+        }
+        return InternResult{ID: MakeObjectID(strings.TrimSpace(string(out)))}
+}