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1 // Copyright 2016 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 #ifndef COMPONENTS_AUTOFILL_CORE_BROWSER_ADDRESS_REWRITER_H_ | |
6 #define COMPONENTS_AUTOFILL_CORE_BROWSER_ADDRESS_REWRITER_H_ | |
7 | |
8 #include "base/strings/string16.h" | |
9 #include "base/strings/string_piece.h" | |
10 #include "base/strings/string_util.h" | |
11 | |
12 namespace autofill { | |
13 | |
14 // A class to apply address normalization rewriting rules to strings. This | |
15 // class is a wrapper to a handle for a set of cached rules. As such, it is | |
16 // copyable, movable, and passable by value. | |
17 class AddressRewriter { | |
18 public: | |
19 // Get an AddressRewrite instance which applies the rules for |country_code|. | |
20 static AddressRewriter ForCountryCode(const base::string16& country_code); | |
21 | |
22 // Apply the rewrite rules to |text| and return the result. | |
23 base::string16 Rewrite(const base::string16& text) const; | |
24 | |
25 private: | |
26 // A handle to the internal rewrite rules this instance is using. | |
27 const void* impl_ = nullptr; | |
28 }; | |
29 | |
30 // Implementation details follow. Not part of the public interface. | |
31 namespace internal { | |
32 | |
33 // The structure used to statically define a rule. | |
34 struct Rule { | |
35 const char* pattern; | |
36 const char* rewrite; | |
37 }; | |
38 | |
39 // The structure used to statically define a set of rules for a region. | |
40 struct RegionInfo { | |
41 const char* region; | |
42 const Rule* rules; | |
43 size_t num_rules; | |
44 | |
45 bool operator<(const base::StringPiece& region) const { | |
46 return base::CompareCaseInsensitiveASCII(this->region, region) < 0; | |
47 } | |
48 | |
49 bool operator==(const base::StringPiece& region) const { | |
50 return base::EqualsCaseInsensitiveASCII(this->region, region); | |
51 } | |
52 }; | |
53 | |
54 // The statically defined rule table, sorted by region. | |
55 extern const internal::RegionInfo kRuleTable[]; | |
56 | |
57 // The size (in records) of the statically defined rule table. | |
58 extern const size_t kRuleTableSize; | |
59 | |
60 } // namespace internal | |
61 | |
62 } // namespace autofill | |
63 | |
64 #endif // COMPONENTS_AUTOFILL_CORE_BROWSER_ADDRESS_REWRITER_H_ | |
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