1 // Copyright (c) 2012 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.
5 #include "device/bluetooth/bluetooth_utils.h"
9 #include "base/basictypes.h"
10 #include "base/logging.h"
11 #include "base/strings/string_util.h"
14 static const char* kCommonUuidPostfix = "-0000-1000-8000-00805f9b34fb";
15 static const char* kCommonUuidPrefix = "0000";
16 static const int kUuidSize = 36;
20 namespace bluetooth_utils {
22 std::string CanonicalUuid(std::string uuid) {
26 if (uuid.size() < 11 && uuid.find("0x") == 0)
27 uuid = uuid.substr(2);
29 if (!(uuid.size() == 4 || uuid.size() == 8 || uuid.size() == 36))
32 if (uuid.size() == 4 || uuid.size() == 8) {
33 for (size_t i = 0; i < uuid.size(); ++i) {
34 if (!IsHexDigit(uuid[i]))
39 return kCommonUuidPrefix + uuid + kCommonUuidPostfix;
41 return uuid + kCommonUuidPostfix;
44 std::string uuid_result(uuid);
45 for (int i = 0; i < kUuidSize; ++i) {
46 if (i == 8 || i == 13 || i == 18 || i == 23) {
50 if (!IsHexDigit(uuid[i]))
52 uuid_result[i] = tolower(uuid[i]);
58 } // namespace bluetooth_utils