Re: Capture console app output into texview?

["Till Harbaum / Lists" <lists harbaum org>]

Hi,

thanks a lot for that explanation. I'll try to combine this into the
code from Dov.

Till

Am Samstag 21 November 2009 schrieb Artur Galjamov:
> Hi,
>
> After exec(), child clib's startup routine determines buffering mode for
> stdout (i.e. calls fdopen(1, "w+")). You can setup pseudo-terminal instead
> of pipe, to make child's stdout line-buffered.
>
>
> optimistic snippet:
> =====================================================================
> #include <fcntl.h>
> #include <stdio.h>
> #include <stdlib.h>
> #include <unistd.h>
>
> int
> main(int argc, char *argv[])
> {
>     int      master_fd, slave_fd;
>     FILE    *master_file, *slave_file;
>     char     buf[80], *device;
>
>     master_fd = posix_openpt(O_RDWR | O_NOCTTY);
>
>     grantpt(master_fd);
>     unlockpt(master_fd);
>
>     slave_fd = open(device = ptsname(master_fd), O_RDWR | O_NOCTTY);
>
>     printf("slave device: %s\n", device);
>
>     master_file = fdopen(master_fd, "r");
>     slave_file = fdopen(slave_fd, "w+");
>
>     if (fork()) {
>         fclose(slave_file);
>         while (fgets(buf, sizeof(buf), master_file))
>             printf("parent got: %s", buf);
>
>     } else {
>         // child
>         fclose(master_file);
>         for (int i = 0; i < 500; i++) {
>             sleep(1);
>             fprintf(slave_file, "child's data (%d)\n", i);
>         }
>     }
>
>     return 0;
> }
> =====================================================================
>
>
>
> 21.11.09, 09:39, "Till Harbaum / Lists" <lists harbaum org>:
>
> > Hi,
> > thanks again for that hint. Unfortunately adding 
> >      /* switch to line buffered mode */
> >     if(setvbuf(fh, NULL, _IOLBF, 0))
> >                     perror("setvbuf(_IOLBF)");
> > to the program posted by Dov doesn't change anything.
> > Are there limitations on changing the buffer mode? E.g.
> > only the transmitter side can do that?