Create new branch

ugit/base.py

@@ -108,6 +108,10 @@ def checkout(oid):
     data.update_ref("HEAD", oid)
 
 
+def create_branch(name, oid):
+    data.update_ref(f"refs/heads/{name}", oid)
+
+
 Commit = namedtuple("Commit", ["tree", "parent", "message"])
 
 

ugit/cli.py

@@ -57,6 +57,11 @@ def parse_args():
     tag_parser.add_argument("name")
     tag_parser.add_argument("oid", default="@", type=oid, nargs="?")
 
+    branch_parser = commands.add_parser("branch")
+    branch_parser.set_defaults(func=branch)
+    branch_parser.add_argument("name")
+    branch_parser.add_argument("start_point", default="@", type=oid, nargs="?")
+
     k_parser = commands.add_parser("k")
     k_parser.set_defaults(func=k)
 
@@ -107,6 +112,11 @@ def tag(args):
     base.create_tag(args.name, args.oid)
 
 
+def branch(args):
+    base.create_branch(args.name, args.start_point)
+    print(f"Branch {args.name} created at {args.start_point[:10]}")
+
+
 def k(args):
     dot = "digraph commits {\n"