atoms/stream.hh

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#ifndef ATOMS_STREAM_H
#define ATOMS_STREAM_H

#include <atoms/gen.hh>

namespace atoms {

class Stream : public virtual IOHandle {
public:
    virtual ~Stream() {}

    virtual void close() = 0;

    virtual bool isOpen() const = 0;

    virtual bool isClosed() const = 0;

    virtual bool isReadable() const = 0;

    virtual bool isWritable() const = 0;

    virtual bool isSeekable() const = 0;

    virtual size_t read(void *buf, size_t count) = 0;

    virtual size_t write(const void *buf, size_t size) = 0;
};

class Seekable : public virtual IOHandle {
public:
    enum Origin {
        oSet,       
        oCur,       
        oEnd        
    };

    virtual off_t seek(off_t offset, Origin origin = oSet) = 0;

    virtual bool isAppending() const = 0;

    off_t tell() { return seek(0, oCur); }
};

} // namespace atoms
#endif 

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