encoder.cpp

#include "encoder.h"

using namespace std;


encoder::encoder()
{
	Reg[0] = 0;
	Reg[1] = 0;
	Reg[2] = 0;
}
	
		encoder::~encoder()
		{}


		void encoder::inputKey() {

			cout << "select yes/no for text file" << endl;
			cin >> begin;
			while (begin != "yes"&& begin != "Yes" && begin != "no"&& begin != "NO")
			{
				cout << "select Yes/No" << endl;
				cin >> begin;

			}

			if (begin == "yes" || begin == "YES")
			{
				cout << " Enter input file name" << endl;
				cin >> inputFile;
				input.open(inputFile);
				if (input.good())
				{

					cout << " input file opening...... " << endl;

					while (!input.eof())
					{

						getline(input, integer, ';');

						if (integer.length() == 0)
						{
							break;
						}
						if (integer != "\n")
						{
							try { digit = stoi(integer); }
							catch (const std::invalid_argument)
							{

								cout << "invalid input" << endl;
								exit(EXIT_FAILURE);
							}

							catch (const std::out_of_range)
							{
								cout << "too big to fit buffer" << endl;
								exit(EXIT_FAILURE);
							}
							if (digit < 0 || digit>1)
							{
								cout << "1/0 only" << endl;
								exit(EXIT_FAILURE);
								return;

							}



						}
						action.buffer(digit);

					}
				}
				else {
					cout << "File not found" << endl;
					exit(EXIT_FAILURE);
					return;
				}
			}
			else if (begin == "no" || begin == "NO")
			{

				cout << "select quantity of input" << endl;
				cin >> quantity;
				while (cin.fail()) {
					cin.clear();
					cin.ignore(INT_MAX, '\n');
					cout << "Enter Number.\n";
					cin >> quantity;
				}

				while (digit == 0)
				{
					cin.clear();
					cin.ignore(INT_MAX, '\n');
					cout << "select number different from 0.\n";

					cin >> digit;
				}
				cout << "select 0 or 1";

				for (int x = 0; x < quantity; x++)
				{
					cin >> digit;
					while (cin.fail())
					{
						cin.clear();
						cin.ignore(INT_MAX, '\n');
						cout << "Enter input 1 and 0 only.\n";
						cout << "input number again.\n";
						cin >> digit;

					}


					if (digit == 0 || digit == 1)
					{
						action.history(digit);
					}
					else {
						cout << "0 and 1 only" << endl;

						if (x > 0) {
							x--;
						}
					}
				}


			}



			input.close();
		}

			void encoder::calculate() {
				for (int y = 0; y < action.under(); y++) {

				
				Reg[2] = Reg[1];
				Reg[1] = Reg[0];
				Reg[0] = action.good(y);

				action.buffer(Reg[0]);
				action.buffer(Reg[1]);
				action.buffer(Reg[2]);

				action.build(Reg[0] ^ Reg[2]);
				action.build(Reg[1] ^ Reg[2]);
				action.build(Reg[0]);
				}
			}
		
			void encoder::output() {
				if ((action.under() == 0))
				{
					cout << "input file missing" << endl;
				}
				else {
					cout << endl;
				}
				Trellis << "input: n/a, ";
				for (int z = 0; z < action.under(); z++) 
				{
					Trellis << action.good(z);
					if (z < (action.under()) - 1) 
					{
						Trellis << ", ";
					}
				}
				Trellis << endl;
				Trellis << "output: n/a";

				for (int z = 0; z < action.out(); z++) {
					if (z % 3 == 0) 
					{
						Trellis << ", ";
					}
					Trellis << action.over(z);
				}
				Trellis << endl;
				Trellis << "Current State" << endl;

				for (int counter = 0; counter <= 7;counter++) 
				{
					bitset<3>binary = counter;
					Trellis << binary << "(" << counter << ") :";
					for (int z = 0; z < action.out() + 1; z++) {
						if (counter % 3 == 0)
						{
							int mode = action.currentState(counter) * 4 + action.currentState(counter + 1) * 2 + action.currentState(counter + 2);
							if (mode == counter) {
								Trellis << "X:";
							}
							else
							{
								Trellis << "  :";
							}
						}
					}
					Trellis << endl;
				}
				string data = Trellis.str();
				cout << data;
				cout<<"output the file yes or no"<<endl;
				string reset;
				cin >> reset;
				if (reset == "yes" || reset == "YES") 
				{
					ofstream Final;
					Final.open("trellis.txt");
					Final << data;
					Final.close();
				}
				else {
					cout << "error output file" << endl;
				}
			}