Re: I/O - exception handling

[Preben Randhol <randhol+abuse@pvv.org>]

Sergey Koshcheyev wrote:
> Hi,
> 
> I have this problem: I have a simple piece of code opening a file, reading a
> few lines, then closing it. Now, I want this piece of code to be "safe",
> i.e. not to leak any resources (the open file) in case of errors and not to
> propagate any exceptions. What is the best style to write this code?

[...]

> begin
>    Open (File, Name => "test.txt", Mode => In_File);
>    Get_Line (File, S1);
>    Get_Line (File, S2);
>    Close (File);
> 
> exception
>    when others =>

In stead of when others => why don't you check which exception
occurred?

You have Name_Error, Use_Error, Device_Error, End_Error etc...

-- 
Preben Randhol                    http://www.pvv.org/~randhol/