OpenEuphoria

Re: Re[2]: What happens if disk full?

• Posted by Irv Mullins <irvm at ellijay.com> Mar 19, 2001
• 400 views

On Mon, 19 Mar 2001, aku at inbox.as wrote:

> Oh yes I forgot that I can use a floppy.
> 
> I tested this program
> 
> object fn,i
> fn = open("A:\\filefull","wb")
> include file.e
> include get.e
> i=0
> while 1 do
>     puts(fn, "x")
>     i+=1
>     printf(1, "%10d   %10d\n", {i, where(fn)})
>     if get_key() != -1 then exit end if
> end while
> 
> Here is the result (confusing):
> (my floppy disk is about 136 KB free)
> 
> In DOS:
> puts() runs normal and no error messages, but the file pointer
> (where()) is increasing, then decreasing, then increasing... and so
> on. You can try the example above. Very strange. And puts() DOES NOT
> write to disk when it's full..
> How I know that puts() really write to disk?
> And how I know if the disk is full...

On Linux, I get a message that where() failed: here is part of 
ex.err:

/home/irv/euphoria/include/file.e:37 in function where() 
where() failed on this file 
    fn = 3

.. called from test.exu:9 

Global & Local Variables

 test.exu:
    fn = 3
    i = 47105

So, how _do_ we know when the disk is full, in a manner that allows 
the program to handle it gracefully? Rob? Anyone?

Regards,
Irv