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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "components/autofill/core/common/autofill_regexes.h" | 5 #include "components/autofill/core/common/autofill_regexes.h" |
6 | 6 |
| 7 #include <memory> |
7 #include <utility> | 8 #include <utility> |
8 | 9 |
9 #include "base/containers/scoped_ptr_hash_map.h" | 10 #include "base/containers/scoped_ptr_hash_map.h" |
10 #include "base/logging.h" | 11 #include "base/logging.h" |
11 #include "base/macros.h" | 12 #include "base/macros.h" |
12 #include "base/memory/scoped_ptr.h" | |
13 #include "base/memory/singleton.h" | 13 #include "base/memory/singleton.h" |
14 #include "base/strings/string16.h" | 14 #include "base/strings/string16.h" |
15 #include "third_party/icu/source/i18n/unicode/regex.h" | 15 #include "third_party/icu/source/i18n/unicode/regex.h" |
16 | 16 |
17 namespace { | 17 namespace { |
18 | 18 |
19 // A singleton class that serves as a cache of compiled regex patterns. | 19 // A singleton class that serves as a cache of compiled regex patterns. |
20 class AutofillRegexes { | 20 class AutofillRegexes { |
21 public: | 21 public: |
22 static AutofillRegexes* GetInstance(); | 22 static AutofillRegexes* GetInstance(); |
23 | 23 |
24 // Returns the compiled regex matcher corresponding to |pattern|. | 24 // Returns the compiled regex matcher corresponding to |pattern|. |
25 icu::RegexMatcher* GetMatcher(const base::string16& pattern); | 25 icu::RegexMatcher* GetMatcher(const base::string16& pattern); |
26 | 26 |
27 private: | 27 private: |
28 AutofillRegexes(); | 28 AutofillRegexes(); |
29 ~AutofillRegexes(); | 29 ~AutofillRegexes(); |
30 friend struct base::DefaultSingletonTraits<AutofillRegexes>; | 30 friend struct base::DefaultSingletonTraits<AutofillRegexes>; |
31 | 31 |
32 // Maps patterns to their corresponding regex matchers. | 32 // Maps patterns to their corresponding regex matchers. |
33 base::ScopedPtrHashMap<base::string16, scoped_ptr<icu::RegexMatcher>> | 33 base::ScopedPtrHashMap<base::string16, std::unique_ptr<icu::RegexMatcher>> |
34 matchers_; | 34 matchers_; |
35 | 35 |
36 DISALLOW_COPY_AND_ASSIGN(AutofillRegexes); | 36 DISALLOW_COPY_AND_ASSIGN(AutofillRegexes); |
37 }; | 37 }; |
38 | 38 |
39 // static | 39 // static |
40 AutofillRegexes* AutofillRegexes::GetInstance() { | 40 AutofillRegexes* AutofillRegexes::GetInstance() { |
41 return base::Singleton<AutofillRegexes>::get(); | 41 return base::Singleton<AutofillRegexes>::get(); |
42 } | 42 } |
43 | 43 |
44 AutofillRegexes::AutofillRegexes() { | 44 AutofillRegexes::AutofillRegexes() { |
45 } | 45 } |
46 | 46 |
47 AutofillRegexes::~AutofillRegexes() { | 47 AutofillRegexes::~AutofillRegexes() { |
48 } | 48 } |
49 | 49 |
50 icu::RegexMatcher* AutofillRegexes::GetMatcher(const base::string16& pattern) { | 50 icu::RegexMatcher* AutofillRegexes::GetMatcher(const base::string16& pattern) { |
51 auto it = matchers_.find(pattern); | 51 auto it = matchers_.find(pattern); |
52 if (it == matchers_.end()) { | 52 if (it == matchers_.end()) { |
53 const icu::UnicodeString icu_pattern(pattern.data(), pattern.length()); | 53 const icu::UnicodeString icu_pattern(pattern.data(), pattern.length()); |
54 | 54 |
55 UErrorCode status = U_ZERO_ERROR; | 55 UErrorCode status = U_ZERO_ERROR; |
56 scoped_ptr<icu::RegexMatcher> matcher( | 56 std::unique_ptr<icu::RegexMatcher> matcher( |
57 new icu::RegexMatcher(icu_pattern, UREGEX_CASE_INSENSITIVE, status)); | 57 new icu::RegexMatcher(icu_pattern, UREGEX_CASE_INSENSITIVE, status)); |
58 DCHECK(U_SUCCESS(status)); | 58 DCHECK(U_SUCCESS(status)); |
59 | 59 |
60 auto result = matchers_.add(pattern, std::move(matcher)); | 60 auto result = matchers_.add(pattern, std::move(matcher)); |
61 DCHECK(result.second); | 61 DCHECK(result.second); |
62 it = result.first; | 62 it = result.first; |
63 } | 63 } |
64 return it->second; | 64 return it->second; |
65 } | 65 } |
66 | 66 |
67 } // namespace | 67 } // namespace |
68 | 68 |
69 namespace autofill { | 69 namespace autofill { |
70 | 70 |
71 bool MatchesPattern(const base::string16& input, | 71 bool MatchesPattern(const base::string16& input, |
72 const base::string16& pattern) { | 72 const base::string16& pattern) { |
73 icu::RegexMatcher* matcher = | 73 icu::RegexMatcher* matcher = |
74 AutofillRegexes::GetInstance()->GetMatcher(pattern); | 74 AutofillRegexes::GetInstance()->GetMatcher(pattern); |
75 icu::UnicodeString icu_input(input.data(), input.length()); | 75 icu::UnicodeString icu_input(input.data(), input.length()); |
76 matcher->reset(icu_input); | 76 matcher->reset(icu_input); |
77 | 77 |
78 UErrorCode status = U_ZERO_ERROR; | 78 UErrorCode status = U_ZERO_ERROR; |
79 UBool match = matcher->find(0, status); | 79 UBool match = matcher->find(0, status); |
80 DCHECK(U_SUCCESS(status)); | 80 DCHECK(U_SUCCESS(status)); |
81 return match == TRUE; | 81 return match == TRUE; |
82 } | 82 } |
83 | 83 |
84 } // namespace autofill | 84 } // namespace autofill |
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