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/* ISC license. */
#include <stdlib.h>
#include <skalibs/sgetopt.h>
#include <skalibs/types.h>
#include <skalibs/strerr.h>
#include <skalibs/env.h>
#include <skalibs/stralloc.h>
#include <skalibs/genalloc.h>
#include <skalibs/skamisc.h>
#include <skalibs/exec.h>
#include <execline/execline.h>
#define USAGE "runblock [ -P ] [ -n argshift ] [ -r ] n cmd..."
#define dieusage() strerr_dieusage(100, USAGE)
int main (int argc, char const *const *argv, char const *const *envp)
{
genalloc v = GENALLOC_ZERO ; /* array of char const * */
unsigned int n, sharp ;
unsigned int m = 0 ;
unsigned int strict = el_getstrict() ;
int flagnopop = 0, flagr = 0 ;
PROG = "runblock" ;
{
subgetopt l = SUBGETOPT_ZERO ;
for (;;)
{
int opt = subgetopt_r(argc, argv, "Prn:", &l) ;
if (opt == -1) break ;
switch (opt)
{
case 'P' : flagnopop = 1 ; break ;
case 'r' : flagr = 1 ; break ;
case 'n' : if (!uint0_scan(l.arg, &m)) dieusage() ; break ;
default : dieusage() ;
}
}
argc -= l.ind ; argv += l.ind ;
}
if (!argc--) dieusage() ;
if (!uint0_scan(*argv++, &n) || (!n && !flagr)) dieusage() ;
{
char const *x = getenv("#") ;
if (!x) strerr_dienotset(100, "#") ;
if (!uint0_scan(x, &sharp)) strerr_dieinvalid(100, "#") ;
}
/* Skip n-1 blocks (n if flagr) */
{
unsigned int i = 1 ;
for (; i < n + flagr ; i++)
{
unsigned int base = m ;
for (;;)
{
char const *x ;
char fmt[UINT_FMT] ;
if (++m > sharp) strerr_dief1x(100, "too few arguments") ;
fmt[uint_fmt(fmt, m)] = 0 ;
x = getenv(fmt) ;
if (!x) strerr_dienotset(100, fmt) ;
if ((x[0] == EXECLINE_BLOCK_END_CHAR) && (!EXECLINE_BLOCK_END_CHAR || !x[1])) break ;
if ((x[0] != EXECLINE_BLOCK_QUOTE_CHAR) && strict)
{
char fmtb[UINT_FMT] ;
char fmti[UINT_FMT] ;
fmti[uint_fmt(fmti, i)] = 0 ;
fmtb[uint_fmt(fmtb, m - base)] = 0 ;
if (strict == 1)
strerr_warnw6x("unquoted positional ", x, " at block ", fmti, " position ", fmtb) ;
else
strerr_dief6x(100, "unquoted positional ", x, " at block ", fmti, " position ", fmtb) ;
}
}
}
}
/* First put args, if any, into v */
if (!genalloc_ready(char const *, &v, argc))
strerr_diefu1sys(111, "genalloc_ready") ;
for (unsigned int i = 0 ; i < (unsigned int)argc ; i++)
genalloc_append(char const *, &v, argv + i) ;
if (flagr) /* put remainder envvars into v */
{
if (++m > sharp) return 0 ;
if (!genalloc_readyplus(char const *, &v, sharp - m + 2))
strerr_diefu1sys(111, "genalloc_readyplus") ;
for (; m <= sharp ; m++)
{
char const *x ;
char fmt[UINT_FMT] ;
fmt[uint_fmt(fmt, m)] = 0 ;
x = getenv(fmt) ;
if (!x) strerr_dienotset(100, fmt) ;
genalloc_append(char const *, &v, &x) ;
}
}
else /* put envvars from nth block into v */
{
unsigned int base = m ;
for (;;)
{
char const *x ;
char fmt[UINT_FMT] ;
if (++m > sharp) strerr_dief1x(100, "too few arguments") ;
fmt[uint_fmt(fmt, m)] = 0 ;
x = getenv(fmt) ;
if (!x) strerr_dienotset(100, fmt) ;
if ((x[0] == EXECLINE_BLOCK_END_CHAR) && (!EXECLINE_BLOCK_END_CHAR || !x[1])) break ;
if (x[0] != EXECLINE_BLOCK_QUOTE_CHAR)
{
if (strict)
{
char fmtb[UINT_FMT] ;
char fmtn[UINT_FMT] ;
fmtn[uint_fmt(fmtn, n)] = 0 ;
fmtb[uint_fmt(fmtb, m - base)] = 0 ;
if (strict == 1)
strerr_warnw6x("unquoted positional ", x, " at block ", fmtn, " position ", fmtb) ;
else
strerr_dief6x(100, "unquoted positional ", x, " at block ", fmtn, " position ", fmtb) ;
}
}
else x++ ;
if (!genalloc_append(char const *, &v, &x)) strerr_diefu1sys(111, "envalloc_catb") ;
}
}
{
char const *z = 0 ;
if (!genalloc_append(char const *, &v, &z))
strerr_diefu1sys(111, "genalloc_append") ;
}
if (flagnopop) /* exec now */
xexec0_e(genalloc_s(char const *, &v), envp) ;
else /* popenv, then exec */
{
char const *list[11] = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "#" } ;
size_t envlen = env_len(envp) ;
int popped = el_popenv(&satmp, envp, envlen, list, 11) ;
if (popped < 0) strerr_diefu1sys(111, "pop environment") ;
else
{
char const *w[envlen - popped + 1] ;
if (!env_make(w, envlen - popped, satmp.s, satmp.len))
strerr_diefu1sys(111, "env_make") ;
w[envlen - popped] = 0 ;
xexec0_e(genalloc_s(char const *, &v), w) ;
}
}
}
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