/* * Copyright (C) 2012 Apple Inc. All rights reserved. * Copyright (C) Research In Motion Limited 2011. All rights reserved. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public License * along with this library; see the file COPYING.LIB. If not, write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. * */ #ifndef Latin1TextIterator_h #define Latin1TextIterator_h #include <wtf/text/WTFString.h> namespace WebCore { class Latin1TextIterator { public: // The passed in LChar pointer starts at 'currentIndex'. The iterator operates on the range [currentIndex, lastIndex]. // 'endCharacter' denotes the maximum length of the UChar array, which might exceed 'lastIndex'. Latin1TextIterator(const LChar* characters, unsigned currentIndex, unsigned lastIndex, unsigned /*endCharacter*/) : m_characters(characters) , m_currentIndex(currentIndex) , m_lastIndex(lastIndex) { } bool consume(UChar32& character, unsigned& clusterLength) { if (m_currentIndex >= m_lastIndex) return false; character = *m_characters; clusterLength = 1; return true; } void advance(unsigned advanceLength) { m_characters += advanceLength; m_currentIndex += advanceLength; } unsigned currentIndex() const { return m_currentIndex; } const LChar* characters() const { return m_characters; } private: const LChar* m_characters; unsigned m_currentIndex; unsigned m_lastIndex; }; } #endif