Go language file operation method

This article illustrates an example of how to manipulate files in the Go language. Share with you for your reference. The details are as follows:

Close file:

func (file *File) Close() os.Error {

    if file == nil {

        return os.EINVAL

    }

    e := syscall.Close(file.fd)

    file.fd = -1 // so it can't be closed again

    if e != 0 {

        return os.Errno(e)

    }

    return nil

}

File reading:

func (file *File) Read(b []byte) (ret int, err os.Error) {

    if file == nil {

        return -1, os.EINVAL

    }

    r, e := syscall.Read(file.fd, b)

    if e != 0 {

        err = os.Errno(e)

    }

    return int(r), err

}

Write file:

func (file *File) Write(b []byte) (ret int, err os.Error) {

    if file == nil {

        return -1, os.EINVAL

    }

    r, e := syscall.Write(file.fd, b)

    if e != 0 {

        err = os.Errno(e)

    }

    return int(r), err

}

Get file name:

func (file *File) String() string {

    return file.name

}

I hope this article has helped you with your Go language programming.