1 files changed, 58 insertions, 0 deletions
diff --git a/modules/git/signature.go b/modules/git/signature.go
new file mode 100644
index 0000000000..e6ab247fd7
--- /dev/null
+++ b/modules/git/signature.go
@@ -0,0 +1,58 @@
+// Copyright 2015 The Gogs Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package git
+
+import (
+	"bytes"
+	"strconv"
+	"time"
+)
+
+// Signature represents the Author or Committer information.
+type Signature struct {
+	Email string
+	Name  string
+	When  time.Time
+}
+
+const (
+	// GitTimeLayout is the (default) time layout used by git.
+	GitTimeLayout = "Mon Jan _2 15:04:05 2006 -0700"
+)
+
+// Helper to get a signature from the commit line, which looks like these:
+//     author Patrick Gundlach <gundlach@speedata.de> 1378823654 +0200
+//     author Patrick Gundlach <gundlach@speedata.de> Thu, 07 Apr 2005 22:13:13 +0200
+// but without the "author " at the beginning (this method should)
+// be used for author and committer.
+//
+// FIXME: include timezone for timestamp!
+func newSignatureFromCommitline(line []byte) (_ *Signature, err error) {
+	sig := new(Signature)
+	emailStart := bytes.IndexByte(line, '<')
+	sig.Name = string(line[:emailStart-1])
+	emailEnd := bytes.IndexByte(line, '>')
+	sig.Email = string(line[emailStart+1 : emailEnd])
+
+	// Check date format.
+	if len(line) > emailEnd+2 {
+		firstChar := line[emailEnd+2]
+		if firstChar >= 48 && firstChar <= 57 {
+			timestop := bytes.IndexByte(line[emailEnd+2:], ' ')
+			timestring := string(line[emailEnd+2 : emailEnd+2+timestop])
+			seconds, _ := strconv.ParseInt(timestring, 10, 64)
+			sig.When = time.Unix(seconds, 0)
+		} else {
+			sig.When, err = time.Parse(GitTimeLayout, string(line[emailEnd+2:]))
+			if err != nil {
+				return nil, err
+			}
+		}
+	} else {
+		// Fall back to unix 0 time
+		sig.When = time.Unix(0, 0)
+	}
+	return sig, nil
+}