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/* ISC license. */
#include <stdint.h>
#include <errno.h>
#include <skalibs/allreadwrite.h>
#include <skalibs/sgetopt.h>
#include <skalibs/types.h>
#include <skalibs/strerr2.h>
#include <skalibs/tai.h>
#include <s6/ftrigr.h>
#define USAGE "s6-ftrig-wait [ -t timeout ] fifodir regexp"
int main (int argc, char const *const *argv)
{
tain_t deadline, tto ;
ftrigr_t a = FTRIGR_ZERO ;
uint16_t id ;
char pack[2] = " \n" ;
PROG = "s6-ftrig-wait" ;
{
unsigned int t = 0 ;
for (;;)
{
int opt = subgetopt(argc, argv, "t:") ;
if (opt == -1) break ;
switch (opt)
{
case 't' : if (uint0_scan(subgetopt_here.arg, &t)) break ;
default : strerr_dieusage(100, USAGE) ;
}
}
if (t) tain_from_millisecs(&tto, t) ;
else tto = tain_infinite_relative ;
argc -= subgetopt_here.ind ; argv += subgetopt_here.ind ;
}
if (argc < 2) strerr_dieusage(100, USAGE) ;
tain_now_set_stopwatch_g() ;
tain_add_g(&deadline, &tto) ;
if (!ftrigr_startf_g(&a, &deadline)) strerr_diefu1sys(111, "ftrigr_startf") ;
id = ftrigr_subscribe_g(&a, argv[0], argv[1], 0, &deadline) ;
if (!id) strerr_diefu4sys(111, "subscribe to ", argv[0], " with regexp ", argv[1]) ;
if (ftrigr_wait_or_g(&a, &id, 1, &deadline, &pack[0]) == -1)
strerr_diefu2sys((errno == ETIMEDOUT) ? 1 : 111, "match regexp on ", argv[1]) ;
if (allwrite(1, pack, 2) < 2) strerr_diefu1sys(111, "write to stdout") ;
return 0 ;
}
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