OpenEuphoria

2. Re: get() - GET_FAIL x GET_EOF

• Posted by Ted Fines <fines at macalester.edu> Apr 20, 2001
• 418 views

In get.e, the GET_ trio are defined as:

global constant GET_SUCCESS = 0,
		GET_EOF = -1,
		GET_FAIL = 1

Try this code:
include get.e
puts(1,"ONE>"  & sprintf("%d",value("{1,")) & "<ONE" & "\n")
puts(1,"TWO>"  & sprintf("%d",value("{1")) & "<TWO" & "\n")
puts(1,"TRE>"  & sprintf("%d",value("{1,2,")) & "<TRE" & "\n")
puts(1,"FOR>"  & sprintf("%d",value("{1,2")) & "<FOR" & "\n")
puts(1,"FIV>"  & sprintf("%d",value("{1,2}")) & "<FIV" & "\n")
puts(1,"SIX>"  & sprintf("%d",value("{A,")) & "<SIX" & "\n")

I get this result:
C:\>ex test
ONE>-1<ONE
TWO>1<TWO
TRE>-1<TRE
FOR>1<FOR
FIV>0<FIV
SIX>1<SIX

This makes sense to me... I can see how the code would read the comma in 
ONE, expect another element, and not finding one return a GET_EOF.  Whereas 
it merely fails with no closing curly bracket.  Not that I'm justifying it, 
but I can see how it would work like this...Seems like it might make more 
sense if an ending comma or missing curly bracket would return the same 
result.

Anyway, if the behavior is consistent, you should be able to find a way to 
work with it...

Ted

--On Friday, April 20, 2001 8:00 PM +0200 martin.stachon at worldonline.cz 
wrote:

>
>
>
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>
>
> Hi all
>
> why
>  value("{1,") gives GET_EOF, but
>  value("{1") gives GET_FAIL ?
>
> I'm writing chat program. The exchange of messages could be done with
> sequences :  client will send something like {myname,message,other_info}.
> The server will read buffer and then decide :
>
> GET_SUCCES => process message
> GET_FAIL => error, ignore this message, send warning to client
> GET_EOF => whole message not sended yet, read the buffer again
>
> Should I use some special char after the end of sequence ?
>
> Thanks
> ------------------------
> Regards,
> Martin Stachon
>
>