reading from stdin via pipe, buffering?

[Rudy Gevaert]

Hi,

I have written an perl program that read from stdin:
while(<STDIN>)
{
chomp
do_it($_);
}
Data is fed to it via a pipe:

cat myfile | ./myprogram

When running the program, the program doesn't always read the whole
line. I'm guessing this has something to do with the stdin buffer.

I would like to know how I can make that perl gets the whole line. As
it is clearly failing from time to time.

Thanks in advance,

Rudy

[Rodrick Brown]

Re: reading from stdin via pipe, buffering?


"Rudy Gevaert" <Rudy.Gevaertno @ugentspam.bewr ote in message
news:fq942i$357 $1@gaudi2.UGent .be...

Hi,
>
I have written an perl program that read from stdin:
while(<STDIN>)
{
chomp
do_it($_);
}
Data is fed to it via a pipe:
>
cat myfile | ./myprogram
>
When running the program, the program doesn't always read the whole line.
I'm guessing this has something to do with the stdin buffer.
>
I would like to know how I can make that perl gets the whole line. As it
is clearly failing from time to time.
>
Thanks in advance,
>
Rudy
>
>

Try disabling buffering $|++;

[Joe Smith]

Re: reading from stdin via pipe, buffering?

Rodrick Brown wrote:

>
"Rudy Gevaert" <Rudy.Gevaertno @ugentspam.bewr ote in message
news:fq942i$357 $1@gaudi2.UGent .be...

>When running the program, the program doesn't always read the whole
>line. I'm guessing this has something to do with the stdin buffer.
>>

>
Try disabling buffering $|++;

Won't help. $| controls output buffering; it has no affect on STDIN.