Function strMatch

stringlib.go:353–390

(L *LState)

}

func strMatch(L *LState) int {
	str := L.CheckString(1)
	pattern := L.CheckString(2)
	offset := L.OptInt(3, 1)
	l := len(str)
	if offset < 0 {
		offset = l + offset + 1
	}
	offset--
	if offset < 0 {
		offset = 0
	}

	mds, err := pm.Find(pattern, unsafeFastStringToReadOnlyBytes(str), offset, 1)
	if err != nil {
		L.RaiseError(err.Error())
	}
	if len(mds) == 0 {
		L.Push(LNil)
		return 0
	}
	md := mds[0]
	nsubs := md.CaptureLength() / 2
	switch nsubs {
	case 1:
		L.Push(LString(str[md.Capture(0):md.Capture(1)]))
		return 1
	default:
		for i := 2; i < md.CaptureLength(); i += 2 {
			if md.IsPosCapture(i) {
				L.Push(LNumber(md.Capture(i)))
			} else {
				L.Push(LString(str[md.Capture(i):md.Capture(i+1)]))
			}
		}
		return nsubs - 1
	}
}

func strRep(L *LState) int {
	str := L.CheckString(1)