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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 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 | 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 #ifndef BASE_I18N_CHAR_ITERATOR_H_ | 5 #ifndef BASE_I18N_CHAR_ITERATOR_H_ |
6 #define BASE_I18N_CHAR_ITERATOR_H_ | 6 #define BASE_I18N_CHAR_ITERATOR_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <string> | 9 #include <string> |
10 | 10 |
11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
12 #include "base/string16.h" | 12 #include "base/string16.h" |
13 | 13 |
14 // The CharIterator classes iterate through the characters in UTF8 and | 14 // The CharIterator classes iterate through the characters in UTF8 and |
15 // UTF16 strings. Example usage: | 15 // UTF16 strings. Example usage: |
16 // | 16 // |
17 // UTF8CharIterator iter(&str); | 17 // UTF8CharIterator iter(&str); |
18 // while (!iter.End()) { | 18 // while (!iter.End()) { |
19 // VLOG(1) << iter.get(); | 19 // VLOG(1) << iter.get(); |
20 // iter.Advance(); | 20 // iter.Advance(); |
21 // } | 21 // } |
22 | 22 |
23 #if defined(OS_WIN) | 23 #if defined(OS_WIN) |
24 typedef unsigned char uint8_t; | 24 typedef unsigned char uint8_t; |
25 #endif | 25 #endif |
26 | 26 |
27 namespace base { | 27 namespace base { |
| 28 namespace i18n { |
28 | 29 |
29 class UTF8CharIterator { | 30 class UTF8CharIterator { |
30 public: | 31 public: |
31 // Requires |str| to live as long as the UTF8CharIterator does. | 32 // Requires |str| to live as long as the UTF8CharIterator does. |
32 UTF8CharIterator(const std::string* str); | 33 UTF8CharIterator(const std::string* str); |
33 ~UTF8CharIterator() {} | 34 ~UTF8CharIterator(); |
34 | 35 |
35 // Return the starting array index of the current character within the | 36 // Return the starting array index of the current character within the |
36 // string. | 37 // string. |
37 int32 array_pos() const { return array_pos_; } | 38 int32 array_pos() const { return array_pos_; } |
38 | 39 |
39 // Return the logical index of the current character, independent of the | 40 // Return the logical index of the current character, independent of the |
40 // number of bytes each character takes. | 41 // number of bytes each character takes. |
41 int32 char_pos() const { return char_pos_; } | 42 int32 char_pos() const { return char_pos_; } |
42 | 43 |
43 // Return the current char. | 44 // Return the current char. |
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70 int32 char_; | 71 int32 char_; |
71 | 72 |
72 DISALLOW_COPY_AND_ASSIGN(UTF8CharIterator); | 73 DISALLOW_COPY_AND_ASSIGN(UTF8CharIterator); |
73 }; | 74 }; |
74 | 75 |
75 class UTF16CharIterator { | 76 class UTF16CharIterator { |
76 public: | 77 public: |
77 // Requires |str| to live as long as the UTF16CharIterator does. | 78 // Requires |str| to live as long as the UTF16CharIterator does. |
78 UTF16CharIterator(const string16* str); | 79 UTF16CharIterator(const string16* str); |
79 UTF16CharIterator(const char16* str, size_t str_len); | 80 UTF16CharIterator(const char16* str, size_t str_len); |
80 ~UTF16CharIterator() {} | 81 ~UTF16CharIterator(); |
81 | 82 |
82 // Return the starting array index of the current character within the | 83 // Return the starting array index of the current character within the |
83 // string. | 84 // string. |
84 int32 array_pos() const { return array_pos_; } | 85 int32 array_pos() const { return array_pos_; } |
85 | 86 |
86 // Return the logical index of the current character, independent of the | 87 // Return the logical index of the current character, independent of the |
87 // number of codewords each character takes. | 88 // number of codewords each character takes. |
88 int32 char_pos() const { return char_pos_; } | 89 int32 char_pos() const { return char_pos_; } |
89 | 90 |
90 // Return the current char. | 91 // Return the current char. |
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116 | 117 |
117 // Character index. | 118 // Character index. |
118 int32 char_pos_; | 119 int32 char_pos_; |
119 | 120 |
120 // The current character. | 121 // The current character. |
121 int32 char_; | 122 int32 char_; |
122 | 123 |
123 DISALLOW_COPY_AND_ASSIGN(UTF16CharIterator); | 124 DISALLOW_COPY_AND_ASSIGN(UTF16CharIterator); |
124 }; | 125 }; |
125 | 126 |
| 127 } // namespace i18n |
126 } // namespace base | 128 } // namespace base |
127 | 129 |
128 #endif // BASE_I18N_CHAR_ITERATOR_H_ | 130 #endif // BASE_I18N_CHAR_ITERATOR_H_ |
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