1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/* ISC license. */
#include <errno.h>
#include <skalibs/allreadwrite.h>
#include <skalibs/sgetopt.h>
#include <skalibs/uint.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 id ;
char pack[2] = " \n" ;
PROG = "s6-ftrig-wait" ;
{
unsigned int t = 0 ;
for (;;)
{
register 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_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 ;
}
|
