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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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