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/*
* This file is part of the KDE libraries
* Copyright (c) 2003 Leo Savernik <l.savernik@aon.at>
* Derived from slave.h
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License version 2 as published by the Free Software Foundation.
*
* 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 __TDEIO_DATASLAVE_H__
#define __TDEIO_DATASLAVE_H__
#include <tdeio/global.h>
#include <tdeio/slave.h>
class TQTimer;
// don't forget to sync DISPATCH_IMPL in dataslave.h
#define DISPATCH_DECL(type) \
void dispatch_##type();
// don't forget to sync DISPATCH_IMPL1 in dataslave.h
#define DISPATCH_DECL1(type, paramtype, param) \
void dispatch_##type(paramtype param);
namespace TDEIO {
/**
* This class provides a high performance implementation for the data
* url scheme (rfc2397).
*
* @internal
* Do not use this class in external applications. It is an implementation
* detail of TDEIO and subject to change without notice.
* @author Leo Savernik
*/
class DataSlave : public TDEIO::Slave {
Q_OBJECT
public:
DataSlave();
virtual ~DataSlave();
virtual void setHost(const TQString &host, int port,
const TQString &user, const TQString &passwd);
virtual void setConfig(const MetaData &config);
virtual void suspend();
virtual void resume();
virtual bool suspended();
virtual void send(int cmd, const TQByteArray &data = TQByteArray());
virtual void hold(const KURL &url);
// pure virtual methods that are defined by the actual protocol
virtual void get(const KURL &url) = 0;
virtual void mimetype(const KURL &url) = 0;
protected:
/**
* Sets metadata
* @internal
*/
void setAllMetaData(const MetaData &);
/**
* Sends metadata set with setAllMetaData
* @internal
*/
void sendMetaData();
// queueing methods
/** identifiers of functions to be queued */
enum QueueType { Queue_mimeType = 1, Queue_totalSize,
Queue_sendMetaData, Queue_data, Queue_finished };
/** structure for queueing. It is very primitive, it doesn't
* even try to conserve memory.
*/
struct QueueStruct {
QueueType type;
TQString s;
TDEIO::filesize_t size;
TQByteArray ba;
QueueStruct() {}
QueueStruct(QueueType type) : type(type) {}
};
typedef TQValueList<QueueStruct> DispatchQueue;
DispatchQueue dispatchQueue;
DISPATCH_DECL1(mimeType, const TQString &, s)
DISPATCH_DECL1(totalSize, TDEIO::filesize_t, size)
DISPATCH_DECL(sendMetaData)
DISPATCH_DECL1(data, const TQByteArray &, ba)
DISPATCH_DECL(finished)
protected slots:
/** dispatches next queued method. Does nothing if there are no
* queued methods.
*/
void dispatchNext();
protected:
virtual void virtual_hook( int id, void* data );
private:
MetaData meta_data;
bool _suspended;
TQTimer *timer;
};
}
#undef DISPATCH_DECL
#undef DISPATCH_DECL1
#endif /*__TDEIO_DATASLAVE_H__*/
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