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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 #include "base/i18n/char_iterator.h" | 5 #include "base/i18n/char_iterator.h" |
| 6 | 6 |
| 7 #include "unicode/utf8.h" | 7 #include "unicode/utf8.h" |
| 8 #include "unicode/utf16.h" | 8 #include "unicode/utf16.h" |
| 9 | 9 |
| 10 namespace base { | 10 namespace base { |
| 11 namespace i18n { | |
| 12 | |
| 13 // UTF8CharIterator ----------------------------------------------------------- | |
|
brettw
2011/01/18 18:36:10
I probably wouldn't bother adding these lines in t
tfarina
2011/01/18 18:42:04
Removed.
| |
| 11 | 14 |
| 12 UTF8CharIterator::UTF8CharIterator(const std::string* str) | 15 UTF8CharIterator::UTF8CharIterator(const std::string* str) |
| 13 : str_(reinterpret_cast<const uint8_t*>(str->data())), | 16 : str_(reinterpret_cast<const uint8_t*>(str->data())), |
| 14 len_(str->size()), | 17 len_(str->size()), |
| 15 array_pos_(0), | 18 array_pos_(0), |
| 16 next_pos_(0), | 19 next_pos_(0), |
| 17 char_pos_(0), | 20 char_pos_(0), |
| 18 char_(0) { | 21 char_(0) { |
| 19 if (len_) | 22 if (len_) |
| 20 U8_NEXT(str_, next_pos_, len_, char_); | 23 U8_NEXT(str_, next_pos_, len_, char_); |
| 21 } | 24 } |
| 22 | 25 |
| 26 UTF8CharIterator::~UTF8CharIterator() { | |
| 27 } | |
| 28 | |
| 23 bool UTF8CharIterator::Advance() { | 29 bool UTF8CharIterator::Advance() { |
| 24 if (array_pos_ >= len_) | 30 if (array_pos_ >= len_) |
| 25 return false; | 31 return false; |
| 26 | 32 |
| 27 array_pos_ = next_pos_; | 33 array_pos_ = next_pos_; |
| 28 char_pos_++; | 34 char_pos_++; |
| 29 if (next_pos_ < len_) | 35 if (next_pos_ < len_) |
| 30 U8_NEXT(str_, next_pos_, len_, char_); | 36 U8_NEXT(str_, next_pos_, len_, char_); |
| 31 | 37 |
| 32 return true; | 38 return true; |
| 33 } | 39 } |
| 34 | 40 |
| 41 // UTF16CharIterator ---------------------------------------------------------- | |
| 42 | |
| 35 UTF16CharIterator::UTF16CharIterator(const string16* str) | 43 UTF16CharIterator::UTF16CharIterator(const string16* str) |
| 36 : str_(reinterpret_cast<const char16*>(str->data())), | 44 : str_(reinterpret_cast<const char16*>(str->data())), |
| 37 len_(str->size()), | 45 len_(str->size()), |
| 38 array_pos_(0), | 46 array_pos_(0), |
| 39 next_pos_(0), | 47 next_pos_(0), |
| 40 char_pos_(0), | 48 char_pos_(0), |
| 41 char_(0) { | 49 char_(0) { |
| 42 if (len_) | 50 if (len_) |
| 43 ReadChar(); | 51 ReadChar(); |
| 44 } | 52 } |
| 45 | 53 |
| 46 UTF16CharIterator::UTF16CharIterator(const char16* str, size_t str_len) | 54 UTF16CharIterator::UTF16CharIterator(const char16* str, size_t str_len) |
| 47 : str_(str), | 55 : str_(str), |
| 48 len_(str_len), | 56 len_(str_len), |
| 49 array_pos_(0), | 57 array_pos_(0), |
| 50 next_pos_(0), | 58 next_pos_(0), |
| 51 char_pos_(0), | 59 char_pos_(0), |
| 52 char_(0) { | 60 char_(0) { |
| 53 if (len_) | 61 if (len_) |
| 54 ReadChar(); | 62 ReadChar(); |
| 55 } | 63 } |
| 56 | 64 |
| 65 UTF16CharIterator::~UTF16CharIterator() { | |
| 66 } | |
| 67 | |
| 57 bool UTF16CharIterator::Advance() { | 68 bool UTF16CharIterator::Advance() { |
| 58 if (array_pos_ >= len_) | 69 if (array_pos_ >= len_) |
| 59 return false; | 70 return false; |
| 60 | 71 |
| 61 array_pos_ = next_pos_; | 72 array_pos_ = next_pos_; |
| 62 char_pos_++; | 73 char_pos_++; |
| 63 if (next_pos_ < len_) | 74 if (next_pos_ < len_) |
| 64 ReadChar(); | 75 ReadChar(); |
| 65 | 76 |
| 66 return true; | 77 return true; |
| 67 } | 78 } |
| 68 | 79 |
| 69 void UTF16CharIterator::ReadChar() { | 80 void UTF16CharIterator::ReadChar() { |
| 70 // This is actually a huge macro, so is worth having in a separate function. | 81 // This is actually a huge macro, so is worth having in a separate function. |
| 71 U16_NEXT(str_, next_pos_, len_, char_); | 82 U16_NEXT(str_, next_pos_, len_, char_); |
| 72 } | 83 } |
| 73 | 84 |
| 85 } // namespace i18n | |
| 74 } // namespace base | 86 } // namespace base |
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