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1 // Copyright (c) 2011 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/break_iterator.h" | 5 #include "base/i18n/break_iterator.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "third_party/icu/source/common/unicode/ubrk.h" | 8 #include "third_party/icu/source/common/unicode/ubrk.h" |
9 #include "third_party/icu/source/common/unicode/uchar.h" | 9 #include "third_party/icu/source/common/unicode/uchar.h" |
10 #include "third_party/icu/source/common/unicode/ustring.h" | 10 #include "third_party/icu/source/common/unicode/ustring.h" |
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131 if (U_FAILURE(status)) { | 131 if (U_FAILURE(status)) { |
132 NOTREACHED() << "ubrk_setText failed"; | 132 NOTREACHED() << "ubrk_setText failed"; |
133 return false; | 133 return false; |
134 } | 134 } |
135 return true; | 135 return true; |
136 } | 136 } |
137 | 137 |
138 bool BreakIterator::IsWord() const { | 138 bool BreakIterator::IsWord() const { |
139 int32_t status = ubrk_getRuleStatus(static_cast<UBreakIterator*>(iter_)); | 139 int32_t status = ubrk_getRuleStatus(static_cast<UBreakIterator*>(iter_)); |
140 if (break_type_ != BREAK_WORD && break_type_ != RULE_BASED) | 140 if (break_type_ != BREAK_WORD && break_type_ != RULE_BASED) |
141 return false; | 141 return false; |
142 return status != UBRK_WORD_NONE; | 142 return status != UBRK_WORD_NONE; |
143 } | 143 } |
144 | 144 |
145 bool BreakIterator::IsEndOfWord(size_t position) const { | 145 bool BreakIterator::IsEndOfWord(size_t position) const { |
146 if (break_type_ != BREAK_WORD && break_type_ != RULE_BASED) | 146 if (break_type_ != BREAK_WORD && break_type_ != RULE_BASED) |
147 return false; | 147 return false; |
148 | 148 |
149 UBreakIterator* iter = static_cast<UBreakIterator*>(iter_); | 149 UBreakIterator* iter = static_cast<UBreakIterator*>(iter_); |
150 UBool boundary = ubrk_isBoundary(iter, static_cast<int32_t>(position)); | 150 UBool boundary = ubrk_isBoundary(iter, static_cast<int32_t>(position)); |
151 int32_t status = ubrk_getRuleStatus(iter); | 151 int32_t status = ubrk_getRuleStatus(iter); |
152 return (!!boundary && status != UBRK_WORD_NONE); | 152 return (!!boundary && status != UBRK_WORD_NONE); |
153 } | 153 } |
154 | 154 |
155 bool BreakIterator::IsStartOfWord(size_t position) const { | 155 bool BreakIterator::IsStartOfWord(size_t position) const { |
156 if (break_type_ != BREAK_WORD && break_type_ != RULE_BASED) | 156 if (break_type_ != BREAK_WORD && break_type_ != RULE_BASED) |
157 return false; | 157 return false; |
158 | 158 |
159 UBreakIterator* iter = static_cast<UBreakIterator*>(iter_); | 159 UBreakIterator* iter = static_cast<UBreakIterator*>(iter_); |
160 UBool boundary = ubrk_isBoundary(iter, static_cast<int32_t>(position)); | 160 UBool boundary = ubrk_isBoundary(iter, static_cast<int32_t>(position)); |
161 ubrk_next(iter); | 161 ubrk_next(iter); |
162 int32_t next_status = ubrk_getRuleStatus(iter); | 162 int32_t next_status = ubrk_getRuleStatus(iter); |
163 return (!!boundary && next_status != UBRK_WORD_NONE); | 163 return (!!boundary && next_status != UBRK_WORD_NONE); |
164 } | 164 } |
165 | 165 |
| 166 bool BreakIterator::IsGraphemeBoundary(size_t position) const { |
| 167 if (break_type_ != BREAK_CHARACTER) |
| 168 return false; |
| 169 |
| 170 UBreakIterator* iter = static_cast<UBreakIterator*>(iter_); |
| 171 return !!ubrk_isBoundary(iter, static_cast<int32_t>(position)); |
| 172 } |
| 173 |
166 string16 BreakIterator::GetString() const { | 174 string16 BreakIterator::GetString() const { |
167 DCHECK(prev_ != npos && pos_ != npos); | 175 DCHECK(prev_ != npos && pos_ != npos); |
168 return string_.substr(prev_, pos_ - prev_); | 176 return string_.substr(prev_, pos_ - prev_); |
169 } | 177 } |
170 | 178 |
171 } // namespace i18n | 179 } // namespace i18n |
172 } // namespace base | 180 } // namespace base |
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