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1 // Copyright (c) 2011 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 #include "base/values.h" | |
11 | |
12 using std::ostream; | |
13 using std::string; | |
14 | |
15 namespace syncable { | |
16 | |
17 ostream& operator<<(ostream& out, const Id& id) { | |
18 out << id.s_; | |
19 return out; | |
20 } | |
21 | |
22 StringValue* Id::ToValue() const { | |
23 return Value::CreateStringValue(s_); | |
24 } | |
25 | |
26 string Id::GetServerId() const { | |
27 // Currently root is the string "0". We need to decide on a true value. | |
28 // "" would be convenient here, as the IsRoot call would not be needed. | |
29 if (IsRoot()) | |
30 return "0"; | |
31 return s_.substr(1); | |
32 } | |
33 | |
34 Id Id::CreateFromServerId(const string& server_id) { | |
35 Id id; | |
36 if (server_id == "0") | |
37 id.s_ = "r"; | |
38 else | |
39 id.s_ = string("s") + server_id; | |
40 return id; | |
41 } | |
42 | |
43 Id Id::CreateFromClientString(const string& local_id) { | |
44 Id id; | |
45 if (local_id == "0") | |
46 id.s_ = "r"; | |
47 else | |
48 id.s_ = string("c") + local_id; | |
49 return id; | |
50 } | |
51 | |
52 Id Id::GetLexicographicSuccessor() const { | |
53 // The successor of a string is given by appending the least | |
54 // character in the alphabet. | |
55 Id id = *this; | |
56 id.s_.push_back(0); | |
57 return id; | |
58 } | |
59 | |
60 bool Id::ContainsStringCaseInsensitive( | |
61 const std::string& lowercase_query) const { | |
62 DCHECK_EQ(StringToLowerASCII(lowercase_query), lowercase_query); | |
63 return StringToLowerASCII(s_).find(lowercase_query) != std::string::npos; | |
64 } | |
65 | |
66 // static | |
67 Id Id::GetLeastIdForLexicographicComparison() { | |
68 Id id; | |
69 id.s_.clear(); | |
70 return id; | |
71 } | |
72 | |
73 Id GetNullId() { | |
74 return Id(); // Currently == root. | |
75 } | |
76 | |
77 } // namespace syncable | |
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