FDstream.h

#pragma once


#include <libutl/Stream.h>


UTL_NS_BEGIN;



class FDstream : public Stream
{
    friend class BufferedFDstream;
    UTL_CLASS_DECL(FDstream, Stream);
    UTL_CLASS_NO_COPY;

public:
    FDstream(int fd, uint_t mode);

    virtual void close();

    void
    detach()
    {
        _fd = -1;
        clear();
    }

    int
    fd() const
    {
        return _fd;
    }

#if UTL_HOST_OS != UTL_OS_MINGW

    bool isSocket() const;
#endif

    bool isTTY() const;

    virtual void setFD(int fd, uint_t mode = io_rd | io_wr);

    virtual size_t read(byte_t* array, size_t maxBytes, size_t minBytes = size_t_max);

    virtual void write(const byte_t* array, size_t num);

#if UTL_HOST_OS != UTL_OS_MINGW

    bool
    blockingIO() const
    {
        return !getFlag(flg_nonBlocking);
    }

    void setBlockingIO(bool v);

    bool blockRead(uint32_t usec = 0);

    bool blockWrite(uint32_t usec = 0);
#endif
protected:
    virtual void clear();

    virtual void setModes();

protected:
    int _fd;

private:
    enum flg_t
    {
        flg_nonBlocking = 4
    };

private:
    void
    init()
    {
        _fd = -1;
    }
    void
    deInit()
    {
        close();
    }
};


UTL_NS_END;