[fpc-pascal]SelectText problem for stdin (Linux unit)

[Anton Tichawa]

hello,

you can use 'select', look at the man page.

hth,

Anton Tichawa

On Tuesday 23 July 2002 15:36, you wrote:
> I'm traing to test if there is some input
> bytes ready in stdin. When i try this with normal
> file, all is ok - SelectText function from Linux unit
> give me n>0 if any character is ready.
>
> When i try with file 'input', SelectText give me 0
> until 2 lines are entered. How to go round this
> without using old and more low-level libs like crt ?
>
> ------- test program -------
>
> program test;
> uses Linux;
>
> var n:longint; w:char; TV:TimeVal;
>
> begin
>  TV.sec:=0; TV.usec:=0;
>  repeat
>   n:=SelectText(input, at TV);
>   if n>0 then begin
>     read(w); write(w);
>     write('[',n,']');
>   end;
>  until eof(input);
> end.
>
> --------- test results: ----------
>
> 1234
> abcd
> 1[1]2[1]3[1]4[1]
> [1]ABCD
> a[1]b[1]c[1]d[1]
> [1]
>
> --------- must be: ---------------
>
> 1234
> 1[1]2[1]3[1]4[1]
> [1]abcd
> a[1]b[1]c[1]d[1]
> [1]ABCD
>
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