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// Copyright (c) 2010 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 "base/i18n/char_iterator.h"
#include "unicode/utf8.h"
#include "unicode/utf16.h"
namespace base {
UTF8CharIterator::UTF8CharIterator(const std::string* str)
: str_(reinterpret_cast<const uint8_t*>(str->data())),
len_(str->size()),
array_pos_(0),
next_pos_(0),
char_pos_(0),
char_(0) {
if (len_)
U8_NEXT(str_, next_pos_, len_, char_);
}
bool UTF8CharIterator::Advance() {
if (array_pos_ >= len_)
return false;
array_pos_ = next_pos_;
char_pos_++;
if (next_pos_ < len_)
U8_NEXT(str_, next_pos_, len_, char_);
return true;
}
UTF16CharIterator::UTF16CharIterator(const string16* str)
: str_(reinterpret_cast<const char16*>(str->data())),
len_(str->size()),
array_pos_(0),
next_pos_(0),
char_pos_(0),
char_(0) {
if (len_)
U16_NEXT(str_, next_pos_, len_, char_);
}
bool UTF16CharIterator::Advance() {
if (array_pos_ >= len_)
return false;
array_pos_ = next_pos_;
char_pos_++;
if (next_pos_ < len_)
U16_NEXT(str_, next_pos_, len_, char_);
return true;
}
} // namespace base
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