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| 1 // Copyright 2012 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 #include "ui/gfx/text_utils.h" | |
| 6 | |
| 7 #include "base/i18n/char_iterator.h" | |
| 8 | |
| 9 namespace gfx { | |
| 10 | |
| 11 base::string16 RemoveAcceleratorChar(const base::string16& s, | |
| 12 base::char16 accelerator_char, | |
| 13 int* accelerated_char_pos, | |
| 14 int* accelerated_char_span) { | |
| 15 bool escaped = false; | |
| 16 ptrdiff_t last_char_pos = -1; | |
| 17 int last_char_span = 0; | |
| 18 base::i18n::UTF16CharIterator chars(&s); | |
| 19 base::string16 accelerator_removed; | |
| 20 | |
| 21 accelerator_removed.reserve(s.size()); | |
| 22 while (!chars.end()) { | |
| 23 int32 c = chars.get(); | |
| 24 int array_pos = chars.array_pos(); | |
| 25 chars.Advance(); | |
| 26 | |
| 27 if (c != accelerator_char || escaped) { | |
| 28 int span = chars.array_pos() - array_pos; | |
| 29 if (escaped && c != accelerator_char) { | |
| 30 last_char_pos = accelerator_removed.size(); | |
| 31 last_char_span = span; | |
| 32 } | |
| 33 for (int i = 0; i < span; i++) | |
| 34 accelerator_removed.push_back(s[array_pos + i]); | |
| 35 escaped = false; | |
| 36 } else { | |
| 37 escaped = true; | |
| 38 } | |
| 39 } | |
| 40 | |
| 41 if (accelerated_char_pos) | |
| 42 *accelerated_char_pos = last_char_pos; | |
| 43 if (accelerated_char_span) | |
| 44 *accelerated_char_span = last_char_span; | |
| 45 | |
| 46 return accelerator_removed; | |
| 47 } | |
| 48 | |
| 49 } // namespace gfx | |
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