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/* ISC license. */
#include <sys/types.h>
#include <skalibs/sgetopt.h>
#include <skalibs/bytestr.h>
#include <skalibs/strerr2.h>
#include <skalibs/env.h>
#include <skalibs/djbunix.h>
#include <skalibs/skamisc.h>
#include <skalibs/ushort.h>
#include <execline/config.h>
#include <execline/execline.h>
#define USAGE "forx [ -p | -o okcode,okcode,... | -x breakcode,breakcode,... ] var { values... } command..."
#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 **argv, char const *const *envp)
{
char const *x ;
int argc1 ;
unsigned short okcodes[256] ;
unsigned int nbc = 0 ;
int flagpar = 0, not = 1 ;
PROG = "forx" ;
{
subgetopt_t l = SUBGETOPT_ZERO ;
for (;;)
{
register int opt = subgetopt_r(argc, argv, "epo:x:", &l) ;
if (opt == -1) break ;
switch (opt)
{
case 'e' : break ; /* compat */
case 'p' : flagpar = 1 ; break ;
case 'o' :
not = 0 ;
if (!ushort_scanlist(okcodes, 256, l.arg, &nbc)) dieusage() ;
break ;
case 'x' :
not = 1 ;
if (!ushort_scanlist(okcodes, 256, l.arg, &nbc)) dieusage() ;
break ;
default : dieusage() ;
}
}
argc -= l.ind ; argv += l.ind ;
}
if (argc < 2) dieusage() ;
x = argv[0] ; if (!*x) dieusage() ;
argv++ ; argc-- ;
argc1 = el_semicolon(argv) ;
if (argc1 >= argc) strerr_dief1x(100, "unterminated block") ;
if (!argc1 || (argc1 + 1 == argc)) return 0 ;
{
unsigned int envlen = env_len(envp) ;
unsigned int varlen = str_len(x) ;
unsigned int i = 0 ;
pid_t pids[flagpar ? argc1 : 1] ;
char const *newenv[envlen + 2] ;
for (; i < (unsigned int)argc1 ; i++)
{
pid_t pid ;
unsigned int vallen = str_len(argv[i]) ;
char modif[varlen + vallen + 2] ;
byte_copy(modif, varlen, x) ;
modif[varlen] = '=' ;
byte_copy(modif + varlen + 1, vallen, argv[i]) ;
modif[varlen + vallen + 1] = 0 ;
if (!env_merge(newenv, envlen + 2, envp, envlen, modif, varlen + vallen + 2))
strerr_diefu1sys(111, "build new environment") ;
pid = el_spawn0(argv[argc1+1], argv + argc1 + 1, newenv) ;
if (!pid) strerr_diefu2sys(111, "spawn ", argv[argc1+1]) ;
if (flagpar) pids[i] = pid ;
else
{
int wstat ;
if (wait_pid(pid, &wstat) == -1)
strerr_diefu2sys(111, "wait for ", argv[argc1+1]) ;
if (not == isok(okcodes, nbc, wait_estatus(wstat)))
return wait_estatus(wstat) ;
}
}
if (flagpar)
if (!waitn(pids, argc1)) strerr_diefu1sys(111, "waitn") ;
}
return 0 ;
}
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