seekablestream.h

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#ifndef _SEEKABLESTREAM_H_
#define _SEEKABLESTREAM_H_
 
#include <Stream.h>
#include <Arduino.h>
 
#define EOFchar 255
 
class seekableStream : public Stream 
{
protected:    
unsigned int streamSize;  
bool         textMode;
uint16_t     contentType;
 
public:
seekableStream(unsigned int size):Stream(),streamSize(size) {};
virtual bool    checkPermissions(char mode) {return true;};
unsigned int    getSize() {return streamSize;}
void            setSize (unsigned int size) {streamSize = size;};
virtual unsigned int seek(unsigned int _pos = 0) = 0;
virtual int     open(String _filename, char mode) = 0; 
virtual void    close() = 0;
virtual uint16_t getContentType() {return contentType;};
virtual void    putEOF() {if (textMode) write (EOFchar);};
};
 
#endif