1 // Copyright 2019 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 "rlz/lib/supplementary_branding.h"
6 
7 #include <string>
8 
9 #include "base/no_destructor.h"
10 #include "rlz/lib/assert.h"
11 #include "rlz/lib/rlz_value_store.h"
12 
13 namespace rlz_lib {
14 
15 namespace {
16 
GetSupplementaryBrandingStorage()17 std::string& GetSupplementaryBrandingStorage() {
18   static base::NoDestructor<std::string> instance;
19   return *instance;
20 }
21 
22 }  // namespace
23 
SupplementaryBranding(const char * brand)24 SupplementaryBranding::SupplementaryBranding(const char* brand)
25     : lock_(new ScopedRlzValueStoreLock) {
26   if (!lock_->GetStore())
27     return;
28 
29   auto& supplementary_brand = GetSupplementaryBrandingStorage();
30   if (!supplementary_brand.empty()) {
31     ASSERT_STRING("ProductBranding: existing brand is not empty");
32     return;
33   }
34 
35   if (brand == nullptr || brand[0] == 0) {
36     ASSERT_STRING("ProductBranding: new brand is empty");
37     return;
38   }
39 
40   supplementary_brand = brand;
41 }
42 
~SupplementaryBranding()43 SupplementaryBranding::~SupplementaryBranding() {
44   if (lock_->GetStore())
45     GetSupplementaryBrandingStorage().clear();
46   delete lock_;
47 }
48 
49 // static
GetBrand()50 const std::string& SupplementaryBranding::GetBrand() {
51   return GetSupplementaryBrandingStorage();
52 }
53 
54 }  // namespace rlz_lib
55