gelDataStream.h

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/*
Gel2D Game Engine - Cross-platform 2D gaming middleware
Copyright (C) 2011 Mark D. Procarione

Gel2D 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.

Gel2D 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.
*/

#ifndef __GELDATASTREAM_H__
#define __GELDATASTREAM_H__

#include "gelNamespace.h"
#include "gelString.h"

#include <cstdio>
#include <cstdlib>

namespace gel
{
        class GelFileStream
        {
                public:
                        GelFileStream() : file(NULL), size(0) {}


                        GelFileStream( const GelString &filename, FileMode mode );


                        ~GelFileStream();


                        bool open( const GelString &filename, FileMode mode );


                        bool close();


                        long read( void *data, long size, long count );


            long write( const void *data, long size, long count );


            bool flush();


            long getSize() const { return size; }


                        long tell() const;


                        bool seek( long offset, DataSeek origin );


                        bool atEnd() const;

        private:
                        FILE *file;
                        long size;
        };

        class GelMemoryStream
        {
                public:
                        GelMemoryStream() { data = NULL; size = 0; position = 0; delOnClose = false; }


                        GelMemoryStream( void *bdata, long bsize );

                        ~GelMemoryStream();


            void deleteOnClose( bool del ) { delOnClose = del; }


                        bool open( void *bdata, long bsize );


                        long read( void *bdata, long bcount );


                        long write( void *bdata, long bcount );


            long getSize() const { return size; }


                        long tell() const { return position; }


                        bool seek( long offset, DataSeek origin );


                        bool atEnd() const;

        private:
                        void *data;
                        long size;
                        long position;
                        bool delOnClose;
        };

        class GelTextStream
        {
                public:
                        GelTextStream() { file = NULL; size = 0; }


                        GelTextStream( const GelString &filename, FileMode mode );


                        ~GelTextStream();


                        bool open( const GelString &filename, FileMode mode );


                        bool close();


            GelString read( int maxlen );


            GelString readAll();


            GelString readLine( int maxlen );


            GelChar readChar();


            bool writeString( const GelString &str );


            bool writeChar( GelChar chr );


            bool flush();


            long getSize() const { return size; }


                        long tell() const;


                        bool seek( long offset, DataSeek origin );


                        bool atEnd() const;

        private:
                        FILE *file;
                        long size;
        };
}

#endif // __GELDATASTREAM_H__