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// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/text_utils.h"
#include "base/i18n/char_iterator.h"
namespace gfx {
string16 RemoveAcceleratorChar(const string16& s,
char16 accelerator_char,
int* accelerated_char_pos,
int* accelerated_char_span) {
bool escaped = false;
ptrdiff_t last_char_pos = -1;
int last_char_span = 0;
base::i18n::UTF16CharIterator chars(&s);
string16 accelerator_removed;
accelerator_removed.reserve(s.size());
while (!chars.end()) {
int32 c = chars.get();
int array_pos = chars.array_pos();
chars.Advance();
if (c != accelerator_char || escaped) {
int span = chars.array_pos() - array_pos;
if (escaped && c != accelerator_char) {
last_char_pos = accelerator_removed.size();
last_char_span = span;
}
for (int i = 0; i < span; i++)
accelerator_removed.push_back(s[array_pos + i]);
escaped = false;
} else {
escaped = true;
}
}
if (accelerated_char_pos)
*accelerated_char_pos = last_char_pos;
if (accelerated_char_span)
*accelerated_char_span = last_char_span;
return accelerator_removed;
}
} // namespace gfx
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