cstreamdatasource.h

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/* This software and supporting documentation are distributed by
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#ifndef SOMAIO_DATASOURCE_CSTREAMDATASOURCE_H
#define SOMAIO_DATASOURCE_CSTREAMDATASOURCE_H
//--- soma-io ----------------------------------------------------------------
#include <soma-io/config/soma_config.h>
#include <soma-io/datasource/datasource.h>                       // base class
//--- system -----------------------------------------------------------------
#include <cstdio>
//----------------------------------------------------------------------------
 
namespace soma
{

  class CStreamDataSource : public DataSource
  {
  public:
    CStreamDataSource( FILE *f = 0, int mode = Read );
    virtual ~CStreamDataSource();
 
    virtual DataSource* clone() const;
    virtual int iterateMode() const;
    virtual bool isOpen() const;
    virtual bool open ( int mode );
    virtual void close();
    virtual offset_t size() const;
    virtual offset_t at() const;
    virtual bool at( offset_t pos );
    virtual long readBlock( char* data, unsigned long maxlen );
    virtual long writeBlock( const char* data, unsigned long len );
    virtual int getch();
    virtual int putch( int ch );
    virtual bool ungetch( int ch );
    virtual bool allowsMemoryMapping() const;
 
    FILE *filePtr() const;       // should it be non-const ?
    void setFilePtr( FILE *f );
 
  protected:
    FILE        *_f;
  };
 
}
 
#endif