syncable_id.cc revision 72a454cd3513ac24fbdd0e0cb9ad70b86a99b801 
1// Copyright (c) 2009 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "chrome/browser/sync/syncable/syncable_id.h"
6
7#include <iosfwd>
8
9#include "base/string_util.h"
10
11using std::ostream;
12using std::string;
13
14namespace syncable {
15const Id kNullId;  // Currently == root.
16
17ostream& operator<<(ostream& out, const Id& id) {
18  out << id.s_;
19  return out;
20}
21
22string Id::GetServerId() const {
23  // Currently root is the string "0". We need to decide on a true value.
24  // "" would be convenient here, as the IsRoot call would not be needed.
25  if (IsRoot())
26    return "0";
27  return s_.substr(1);
28}
29
30Id Id::CreateFromServerId(const string& server_id) {
31  Id id;
32  if (server_id == "0")
33    id.s_ = "r";
34  else
35    id.s_ = string("s") + server_id;
36  return id;
37}
38
39Id Id::CreateFromClientString(const string& local_id) {
40  Id id;
41  if (local_id == "0")
42    id.s_ = "r";
43  else
44    id.s_ = string("c") + local_id;
45  return id;
46}
47
48}  // namespace syncable
49