FileStream.h

#pragma once


#include <libutl/FDstream.h>
#include <libutl/Pathname.h>


UTL_NS_BEGIN;


enum fs_flags_t
{
    fs_create = 4,  
    fs_append = 8,  
    fs_trunc = 16,  
    fs_clobber = 32 
};



class FileStream : public FDstream
{
    UTL_CLASS_DECL(FileStream, FDstream);
    UTL_CLASS_DEFID;

public:
    FileStream(int fd, uint_t mode = io_rdwr);

    FileStream(const Pathname& path, uint_t mode = io_rdwr, uint_t createMode = uint_t_max);

    ssize_t length() const;

    void open(int fd, uint_t mode = io_rdwr);

    void open(const Pathname& path, uint_t mode = io_rdwr, uint_t createMode = uint_t_max);

    void
    rewind()
    {
        seek(0);
    }

    ssize_t
    seek(ssize_t offset)
    {
        return seekStart(offset);
    }

    ssize_t seekCur(ssize_t offset);

    ssize_t seekStart(ssize_t offset = 0);

    ssize_t seekEnd(ssize_t offset = 0);

    ssize_t tell() const;

    void truncate(ssize_t length = ssize_t_max);
};


UTL_NS_END;