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/* ISC license. */
#include <sys/types.h>
#include <sys/wait.h>
#include <skalibs/sgetopt.h>
#include <skalibs/strerr2.h>
#include <skalibs/ushort.h>
#include <skalibs/djbunix.h>
#include <execline/execline.h>
#define USAGE "loopwhilex [ -n ] [ -o okcode,okcode,... | -x exitcode,exitcode,... ] prog..."
#define dieusage() strerr_dieusage(100, USAGE)
static int isok (unsigned short *tab, unsigned int n, int code)
{
register unsigned int i = 0 ;
for (; i < n ; i++) if ((unsigned short)code == tab[i]) break ;
return i < n ;
}
int main (int argc, char const *const *argv, char const *const *envp)
{
int wstat ;
int not = 0, cont = 1, rev = 0 ;
unsigned short okcodes[256] ;
unsigned int nbc = 0 ; /* XXX */
PROG = "loopwhilex" ;
{
subgetopt_t l = SUBGETOPT_ZERO ;
for (;;)
{
register int opt = subgetopt_r(argc, argv, "no:x:", &l) ;
if (opt == -1) break ;
switch (opt)
{
case 'n' : not = 1 ; break ;
case 'o' :
rev = 0 ;
if (!ushort_scanlist(okcodes, 256, l.arg, &nbc)) dieusage() ;
break ;
case 'x' :
rev = 1 ;
if (!ushort_scanlist(okcodes, 256, l.arg, &nbc)) dieusage() ;
break ;
default : dieusage() ;
}
}
argc -= l.ind ; argv += l.ind ;
}
if (!argc) dieusage() ;
if (!nbc)
{
okcodes[0] = 0 ;
nbc = 1 ;
}
else if (rev) not = !not ;
while (cont)
{
pid_t pid = el_spawn0(argv[0], argv, envp) ;
if (!pid) strerr_diefu2sys(111, "spawn ", argv[0]) ;
if (wait_pid(pid, &wstat) < 0) strerr_diefu1sys(111, "wait_pid") ;
cont = not != isok(okcodes, nbc, wait_estatus(wstat)) ;
}
return wait_estatus(wstat) ;
}
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