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81 lines
1.8 KiB
C++
81 lines
1.8 KiB
C++
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/i18n/char_iterator.h"
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#include "third_party/icu/source/common/unicode/utf8.h"
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#include "third_party/icu/source/common/unicode/utf16.h"
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namespace base {
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namespace i18n {
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UTF8CharIterator::UTF8CharIterator(const std::string* str)
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: str_(reinterpret_cast<const uint8_t*>(str->data())),
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len_(str->size()),
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array_pos_(0),
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next_pos_(0),
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char_pos_(0),
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char_(0) {
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if (len_)
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U8_NEXT(str_, next_pos_, len_, char_);
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}
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UTF8CharIterator::~UTF8CharIterator() = default;
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bool UTF8CharIterator::Advance() {
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if (array_pos_ >= len_)
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return false;
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array_pos_ = next_pos_;
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char_pos_++;
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if (next_pos_ < len_)
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U8_NEXT(str_, next_pos_, len_, char_);
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return true;
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}
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UTF16CharIterator::UTF16CharIterator(const string16* str)
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: str_(reinterpret_cast<const char16*>(str->data())),
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len_(str->size()),
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array_pos_(0),
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next_pos_(0),
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char_pos_(0),
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char_(0) {
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if (len_)
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ReadChar();
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}
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UTF16CharIterator::UTF16CharIterator(const char16* str, size_t str_len)
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: str_(str),
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len_(str_len),
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array_pos_(0),
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next_pos_(0),
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char_pos_(0),
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char_(0) {
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if (len_)
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ReadChar();
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}
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UTF16CharIterator::~UTF16CharIterator() = default;
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bool UTF16CharIterator::Advance() {
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if (array_pos_ >= len_)
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return false;
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array_pos_ = next_pos_;
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char_pos_++;
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if (next_pos_ < len_)
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ReadChar();
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return true;
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}
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void UTF16CharIterator::ReadChar() {
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// This is actually a huge macro, so is worth having in a separate function.
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U16_NEXT(str_, next_pos_, len_, char_);
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}
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} // namespace i18n
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} // namespace base
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