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client: Use readline only when standard input is a TTY

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Readline is for interactive use.  For non-interactive use, it merely
complicates things.  Case in point: it slows down "make check" by almost
10% for me.

Interactive use should always involve a TTY, so use readline only when
standard input is a TTY.  This supresses readline in "make check".

Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
This commit is contained in:
Markus Armbruster 2017-07-09 17:05:51 +02:00
parent a0220e864f
commit de638fd779
1 changed files with 25 additions and 16 deletions
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17
src/client/play.c
View file

@ -421,6 +421,7 @@ recv_output(int sock)
}
#ifdef HAVE_LIBREADLINE
static int use_readline;
static char *input_from_rl;
static int has_rl_input;
@ -471,7 +472,7 @@ recv_input(int fd, struct ring *inbuf)
int res = 1;
#ifdef HAVE_LIBREADLINE
if (fd == 0) {
if (fd == 0 && use_readline) {
if (!has_rl_input)
rl_callback_read_char();
if (!has_rl_input)
@ -519,7 +520,7 @@ send_input(int fd, struct ring *inbuf)
}
#ifdef HAVE_LIBREADLINE
if (fd == 0 && has_rl_input && input_from_rl)
if (fd == 0 && use_readline && has_rl_input && input_from_rl)
ring_from_rl(inbuf);
#endif
@ -563,11 +564,14 @@ play(int sock, char *history_file)
sa.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &sa, NULL);
#ifdef HAVE_LIBREADLINE
if (isatty(0)) {
use_readline = 1;
rl_already_prompted = 1;
if (history_file)
read_history(history_file);
rl_bind_key('\t', rl_insert); /* Disable tab completion */
rl_callback_handler_install("", input_handler);
}
#endif /* HAVE_LIBREADLINE */
ring_init(&inbuf);
@ -670,9 +674,11 @@ play(int sock, char *history_file)
}
#ifdef HAVE_LIBREADLINE
if (use_readline) {
rl_callback_handler_remove();
if (history_file)
write_history(history_file);
}
#endif
return ret;
}
@ -684,12 +690,15 @@ prompt(int code, char *prompt, char *teles)
snprintf(pr, sizeof(pr), "%s%s", teles, prompt);
#ifdef HAVE_LIBREADLINE
if (use_readline) {
rl_set_prompt(pr);
rl_forced_update_display();
#else /* !HAVE_LIBREADLINE */
} else
#endif /* HAVE_LIBREADLINE */
{
printf("%s", pr);
fflush(stdout);
#endif /* !HAVE_LIBREADLINE */
}
if (auxfp) {
fprintf(auxfp, "%s%s", teles, prompt);
fflush(auxfp);