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70f9b2f953
the device was opened for reading only but for the version to be written it has to be opened for writing too Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
/* This file is part of the KDE project
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Copyright 2009 David Faure <faure@kde.org>
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This library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Library General Public License as published
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by the Free Software Foundation; either version 2 of the License or
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( at your option ) version 3 or, at the discretion of KDE e.V.
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( which shall act as a proxy as in section 14 of the GPLv3 ), any later version.
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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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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 KSYCOCADEVICES_P_H
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#define KSYCOCADEVICES_P_H
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#include "ksycoca_p.h"
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class KSycocaAbstractDevice
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{
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public:
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KSycocaAbstractDevice() : m_stream(0)
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{
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}
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virtual ~KSycocaAbstractDevice() { delete m_stream; }
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virtual QIODevice* device() const = 0;
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QDataStream* & stream() {
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if (!m_stream) {
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m_stream = new QDataStream(device());
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}
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return m_stream;
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}
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private:
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QDataStream* m_stream;
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};
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// Reading from a QFile
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class KSycocaFileDevice : public KSycocaAbstractDevice
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{
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public:
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KSycocaFileDevice(const QString& path) {
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m_database = new QFile(path);
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}
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~KSycocaFileDevice() {
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delete m_database;
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}
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virtual QIODevice* device() const {
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return m_database;
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}
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private:
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QFile* m_database;
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};
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// Reading from a dummy memory buffer
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class KSycocaBufferDevice : public KSycocaAbstractDevice
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{
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public:
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KSycocaBufferDevice() {
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m_buffer = new QBuffer();
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m_buffer->open(QIODevice::ReadWrite); // can't fail
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QDataStream str(m_buffer);
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str << qint32(KSYCOCA_VERSION);
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str << qint32(0);
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}
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~KSycocaBufferDevice() {
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delete m_buffer;
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}
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virtual QIODevice* device() const {
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return m_buffer;
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}
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private:
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QBuffer* m_buffer;
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};
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#endif /* KSYCOCADEVICES_P_H */
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