set_output_file_name()修好了，output file name已經可以產生正常的offset
不過file content還不行寫進去

Signed-off-by: gogomako <gogomako@gmail.com>
split by lines功能基本上完成了!

Signed-off-by: gogomako <gogomako@gmail.com>
split by size功能基本上完成了!
但寫出的檔案是亂碼

Signed-off-by: gogomako <gogomako@gmail.com>