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75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
/**
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* This file is part of the KHTML renderer for KDE.
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*
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* Copyright (C) 2006, 2007 Maksim Orlovich (maksim@kde.org)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef KHTML_MISC_TRANSLATOR_H
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#define KHTML_MISC_TRANSLATOR_H
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#include <QtCore/QMap>
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//---------------------------------------------------------------------------------------------
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/* This class is used to do remapping between different encodings reasonably compactly.
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It stores things as (L,R) tables, but reads left-side from memory as MemL */
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template<typename L, typename R, typename MemL>
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class IDTranslator
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{
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public:
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struct Info {
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MemL l;
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R r;
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};
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IDTranslator(const Info* table) {
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for (const Info* cursor = table; cursor->l; ++cursor) {
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m_lToR.insert(cursor->l, cursor->r);
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m_rToL.insert(cursor->r, cursor->l);
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}
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}
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bool hasLeft(L l) {
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typename QMap<L,R>::iterator i = m_lToR.find(l);
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return i != m_lToR.end();
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}
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L toLeft(R r) {
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typename QMap<R,L>::iterator i( m_rToL.find(r) );
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if (i != m_rToL.end())
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return *i;
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return L();
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}
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R toRight(L l) {
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typename QMap<L,R>::iterator i = m_lToR.find(l);
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if (i != m_lToR.end())
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return *i;
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return R();
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}
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private:
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QMap<L, R> m_lToR;
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QMap<R, L> m_rToL;
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};
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#define MAKE_TRANSLATOR(name,L,R,MR,table) static IDTranslator<L,R,MR>* s_##name; \
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static IDTranslator<L,R,MR>* name() { if (!s_##name) s_##name = new IDTranslator<L,R,MR>(table); \
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return s_##name; }
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#endif
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