static int
regexec2(Reprog *progp, /* program to run */
char *bol, /* string to run machine on */
Resub *mp, /* subexpression elements */
int ms, /* number of elements at mp */
Reljunk *j
)
{
int rv;
Relist *relist0, *relist1;
/* mark space */
relist0 = malloc(BIGLISTSIZE*sizeof(Relist));
if(relist0 == nil)
return -1;
relist1 = malloc(BIGLISTSIZE*sizeof(Relist));
if(relist1 == nil){
free(relist1);
return -1;
}
j->relist[0] = relist0;
j->relist[1] = relist1;
j->reliste[0] = relist0 + BIGLISTSIZE - 2;
j->reliste[1] = relist1 + BIGLISTSIZE - 2;
rv = regexec1(progp, bol, mp, ms, j);
free(relist0);
free(relist1);
return rv;
}
static int
regexec2(Reprog *progp, /* program to run */
char *bol, /* string to run machine on */
Resub *mp, /* subexpression elements */
int ms, /* number of elements at mp */
Reljunk *j
)
{
Relist relist0[BIGLISTSIZE], relist1[BIGLISTSIZE];
/* mark space */
j->relist[0] = relist0;
j->relist[1] = relist1;
j->reliste[0] = relist0 + nelem(relist0) - 2;
j->reliste[1] = relist1 + nelem(relist1) - 2;
return regexec1(progp, bol, mp, ms, j);
}
extern int
regexec(Reprog *progp, /* program to run */
char *bol, /* string to run machine on */
Resub *mp, /* subexpression elements */
int ms) /* number of elements at mp */
{
Reljunk j;
Relist relist0[LISTSIZE], relist1[LISTSIZE];
int rv;
/*
* use user-specified starting/ending location if specified
*/
j.starts = bol;
j.eol = 0;
if(mp && ms>0){
if(mp->s.sp)
j.starts = mp->s.sp;
if(mp->e.ep)
j.eol = mp->e.ep;
}
j.starttype = 0;
j.startchar = 0;
if(progp->startinst->type == RUNE && progp->startinst->u1.r < Runeself) {
j.starttype = RUNE;
j.startchar = progp->startinst->u1.r;
}
if(progp->startinst->type == BOL)
j.starttype = BOL;
/* mark space */
j.relist[0] = relist0;
j.relist[1] = relist1;
j.reliste[0] = relist0 + nelem(relist0) - 2;
j.reliste[1] = relist1 + nelem(relist1) - 2;
rv = regexec1(progp, bol, mp, ms, &j);
if(rv >= 0)
return rv;
rv = regexec2(progp, bol, mp, ms, &j);
if(rv >= 0)
return rv;
return -1;
}
