/* -*- C++ -*- */

/********************

Feb.2018 Rui Azevedo - ruihfazevedo(@rrob@)gmail.com

www.r-site.net

string input driver

***/

#ifdef ArduinoMenu_deprecated_code

//this code is not compatible with new input model

//use textValue command instead!

#ifndef RSITE_ARDUINO_MENU_HW_STRINGIN

#define RSITE_ARDUINO_MENU_HW_STRINGIN

#include "../menu.h"

namespace Menu {

//using a circular buffer

//attention, if using sz=0 (2^0=1) we just override previous character

template<uint8_t sz=0>//this size is 2^sz

class stringIn:public Stream, public streamIn {

public:

static_assert(sz<7,"ArduinoMenu: max buffer size is 2^7");

enum Mask:uint8_t {

nBytes=1<<sz,

mask=nBytes-1

};

char data[nBytes]={0};

uint8_t head=0;

uint8_t at=0;

size_t write(uint8_t o) override {

if (sz&&(at==mask&(head-1))) return 0;//buffer full!

data[at]=o;

at++;

at&=mask;

return 1;

}

int available() override {return sz?at-head:data[head]!=0;}

navCmd peek() override {return available()?data[head]:noCmd;}

navCmd getCmd() override {

if (available()) {

if (sz&&(head==at)) return nocmd;

int r=data[head];

if(!sz) data[head]=0;

head++;

head&=mask;

return r;

}

return nocmd;

}

// void flush() override {at=head=0;}//just throw away all data!

};

}

#endif

#endif