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; }
int regexec(regexp *prog, char *string) { return regexec2(prog, string, 0); }