2 * Copyright (C) 2012 Apple Inc. All rights reserved.
3 * Copyright (C) Research In Motion Limited 2011. All rights reserved.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
22 #ifndef Latin1TextIterator_h
23 #define Latin1TextIterator_h
25 #include "wtf/text/WTFString.h"
29 class Latin1TextIterator {
31 // The passed in LChar pointer starts at 'currentCharacter'. The iterator operates on the range [currentCharacter, lastCharacter].
32 // 'endCharacter' denotes the maximum length of the UChar array, which might exceed 'lastCharacter'.
33 Latin1TextIterator(const LChar* characters, int currentCharacter, int lastCharacter, int /*endCharacter*/)
34 : m_characters(characters)
35 , m_currentCharacter(currentCharacter)
36 , m_lastCharacter(lastCharacter)
40 bool consume(UChar32& character, unsigned& clusterLength)
42 if (m_currentCharacter >= m_lastCharacter)
45 character = *m_characters;
50 void advance(unsigned advanceLength)
52 m_characters += advanceLength;
53 m_currentCharacter += advanceLength;
56 int currentCharacter() const { return m_currentCharacter; }
57 const LChar* characters() const { return m_characters; }
60 const LChar* m_characters;
61 int m_currentCharacter;