nvi/regex/engine.c

298 	const RCHAR_T *sp;	/* start of string matched by it */
310 	sp = start;
332 			sp++;
341 			sp++;
352 				rest = slow(m, sp, stp, ss, es);
360 				assert(stp >= sp);	/* it did work */
365 			if (slow(m, sp, rest, ssub, esub) != NULL) {
366 				dp = dissect(m, sp, rest, ssub, esub);
369 				assert(sp == rest);
370 			sp = rest;
376 				rest = slow(m, sp, stp, ss, es);
384 				assert(stp >= sp);	/* it did work */
388 			ssp = sp;
406 			sp = rest;
412 				rest = slow(m, sp, stp, ss, es);
420 				assert(stp >= sp);	/* it did work */
426 				if (slow(m, sp, rest, ssub, esub) == rest)
439 			dp = dissect(m, sp, rest, ssub, esub);
441 			sp = rest;
453 			m->pmatch[i].rm_so = sp - m->offp;
458 			m->pmatch[i].rm_eo = sp - m->offp;
466 	assert(sp == stop);
467 	return(sp);
479 	const RCHAR_T *sp;	/* start of string matched by it */
492 	sp = start;
501 			if (sp == stop || *sp++ != d)
505 			if (sp == stop)
507 			sp++;
511 			if (sp == stop || !CHIN(cs, *sp++))
515 			if ( (sp == m->beginp && !(m->eflags&REG_NOTBOL)) ||
516 					(sp < m->endp && *(sp-1) == '\n' &&
523 			if ( (sp == m->endp && !(m->eflags&REG_NOTEOL)) ||
524 					(sp < m->endp && *sp == '\n' &&
531 			if (( (sp == m->beginp && !(m->eflags&REG_NOTBOL)) ||
532 					(sp < m->endp && *(sp-1) == '\n' &&
534 					(sp > m->beginp &&
535 							!ISWORD(*(sp-1))) ) &&
536 					(sp < m->endp && ISWORD(*sp)) )
542 			if (( (sp == m->endp && !(m->eflags&REG_NOTEOL)) ||
543 					(sp < m->endp && *sp == '\n' &&
545 					(sp < m->endp && !ISWORD(*sp)) ) &&
546 					(sp > m->beginp && ISWORD(*(sp-1))) )
571 		if (sp != stop)
573 		return(sp);
578 	AT("hard", sp, stop, ss, stopst);
590 		if (sp > stop - len)
593 		if (memcmp(sp, ssp, len) != 0)
597 		return(backref(m, sp+len, stop, ss+1, stopst, lev));
600 		dp = backref(m, sp, stop, ss+1, stopst, lev);
603 		return(backref(m, sp, stop, ss+d+1, stopst, lev));
608 		m->lastpos[lev+1] = sp;
609 		return(backref(m, sp, stop, ss+1, stopst, lev+1));
612 		if (sp == m->lastpos[lev])	/* last pass matched null */
613 			return(backref(m, sp, stop, ss+1, stopst, lev-1));
615 		m->lastpos[lev] = sp;
616 		dp = backref(m, sp, stop, ss-d+1, stopst, lev);
618 			return(backref(m, sp, stop, ss+1, stopst, lev-1));
627 			dp = backref(m, sp, stop, ssub, esub, lev);
647 		m->pmatch[i].rm_so = sp - m->offp;
648 		dp = backref(m, sp, stop, ss+1, stopst, lev);
658 		m->pmatch[i].rm_eo = sp - m->offp;
659 		dp = backref(m, sp, stop, ss+1, stopst, lev);