How about something like
func grep(pat []byte, r io.Reader, w io.Writer) error {
scanner := bufio.NewScanner(r)
for scanner.Scan() {
if (bytes.Contains(scanner.Bytes(), pat)) {
w.Write(scanner.Bytes())
}
}
return scanner.Err()
}
and for extra speed, just allocate a bigger buffer to the scanner...
On Saturday, 7 May 2022 at 21:46:33 UTC+1 Jan Mercl wrote:
> On Sat, May 7, 2022 at 10:24 PM Constantine Vassilev <ths...@gmail.com>
> wrote:
>
> > I need to write a program that reads STDIN and should output every line
> that contains a search word "test" to STDOUT.
>
> Piping the data through grep(1) would be my first option.
>
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