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/*
Copyright (C) 2001-2004 Stephane Magnenat & Luc-Olivier de Charrière
for any question or comment contact us at <stephane at magnenat dot net> or <NuageBleu at gmail dot com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __STREAM_H
#define __STREAM_H
// For U/SintNN
#include "Types.h"
#include <string>
namespace GAGCore
{
//! A stream is a high-level serialization structure, used to read/write structured datas
class Stream
{
public:
virtual ~Stream() { }
virtual bool canSeek(void) = 0;
virtual void seekFromStart(int displacement) = 0;
virtual void seekFromEnd(int displacement) = 0;
virtual void seekRelative(int displacement) = 0;
virtual size_t getPosition(void) = 0;
virtual bool isEndOfStream(void) = 0;
};
//! The stream that can be written to
class OutputStream : public Stream
{
public:
virtual ~OutputStream() { }
virtual void write(const void *data, const size_t size, const char *name) = 0;
virtual void writeSint8(const Sint8 v, const char *name) = 0;
virtual void writeUint8(const Uint8 v, const char *name) = 0;
virtual void writeSint16(const Sint16 v, const char *name) = 0;
virtual void writeUint16(const Uint16 v, const char *name) = 0;
virtual void writeSint32(const Sint32 v, const char *name) = 0;
virtual void writeUint32(const Uint32 v, const char *name) = 0;
virtual void writeFloat(const float v, const char *name) = 0;
virtual void writeDouble(const double v, const char *name) = 0;
virtual void writeText(const std::string &v, const char *name) = 0;
virtual void flush(void) = 0;
virtual void writeEnterSection(const char *name) = 0;
virtual void writeEnterSection(unsigned id) = 0;
virtual void writeLeaveSection(size_t count = 1) = 0;
};
//! The stream that can be read from
class InputStream : public Stream
{
public:
virtual ~InputStream() { }
virtual void read(void *data, size_t size, const char *name) = 0;
virtual Sint8 readSint8(const char *name) = 0;
virtual Uint8 readUint8(const char *name) = 0;
virtual Sint16 readSint16(const char *name) = 0;
virtual Uint16 readUint16(const char *name) = 0;
virtual Sint32 readSint32(const char *name) = 0;
virtual Uint32 readUint32(const char *name) = 0;
virtual float readFloat(const char *name) = 0;
virtual double readDouble(const char *name) = 0;
virtual std::string readText(const char *name) = 0;
virtual void readEnterSection(const char *name) = 0;
virtual void readEnterSection(unsigned id) = 0;
virtual void readLeaveSection(size_t count = 1) = 0;
};
class StreamBackend;
//! Stream used to write line by line
class OutputLineStream
{
private:
StreamBackend *backend;
public:
OutputLineStream(StreamBackend *backend);
virtual ~OutputLineStream();
void writeLine(const std::string &s);
void writeLine(const char *s);
bool isEndOfStream(void);
};
//! Stream used to read line by line
class InputLineStream
{
private:
StreamBackend *backend;
public:
InputLineStream(StreamBackend *backend);
virtual ~InputLineStream();
std::string readLine(void);
bool isEndOfStream(void);
};
}
#endif
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