ctucx.git: nimgit

object.nim: rename proc kind -> type; new proc shortId

diff --git a/nimgit/objects.nim b/nimgit/objects.nim
@@ -21,4 +21,17 @@ proc lookupObject* (repo: GitRepository, name: string): GitObject =
             of grcInvalidSpec: raise newException(CatchableError, "Object lookup was ambiguous")
             else: raise newException(CatchableError, "Object lookup failed: " & $error)
 
-proc kind* (obj: GitObject): GitObjectKind = GitObjectKind(git_object_type(obj) - GIT_OBJECT_ANY)-
\ No newline at end of file
+proc type* (obj: GitObject): GitObjectKind = GitObjectKind(git_object_type(obj) - GIT_OBJECT_ANY)
+
+proc shortId* (obj: GitObject): string =
+    var buffer: git_buf
+
+    let error = git_object_short_id(addr buffer, obj)
+
+    if error != 0:
+        git_buf_dispose(addr buffer);
+        raise newException(CatchableError, "Cannot short id: " & $error.getResultCode)
+
+    result = $buffer.ptr
+
+    git_buf_dispose(addr buffer);