Function readLine

io.go:136–161

(l *State)

}

func readLine(l *State) int {
	s := l.ToUserData(UpValueIndex(1)).(*stream)
	argCount, _ := l.ToInteger(UpValueIndex(2))
	if s.close == nil {
		Errorf(l, "file is already closed")
	}
	l.SetTop(1)
	for i := 1; i <= argCount; i++ {
		l.PushValue(UpValueIndex(3 + i))
	}
	resultCount := read(l, s.f, 2)
	l.assert(resultCount > 0)
	if !l.IsNil(-resultCount) {
		return resultCount
	}
	if resultCount > 1 {
		m, _ := l.ToString(-resultCount + 1)
		Errorf(l, m)
	}
	if l.ToBoolean(UpValueIndex(3)) {
		l.SetTop(0)
		l.PushValue(UpValueIndex(1))
		closeHelper(l)
	}
	return 0
}

func lines(l *State, shouldClose bool) {
	argCount := l.Top() - 1