Wonyoung Lee MP#5

//
//

#include "stdafx.h"
#include <iostream>
#include <string>
#include <fstream>

using namespace std;

string keyWord_In_Array(string keyword) {           // get keyword(HAPPINESS) to ready to put array.

    string code;                                    //save strong to easyly put data in array.
    char ch = ' ';

    for (size_t i = 0; i < keyword.length(); i++)
    {
        if (keyword[i] != ch) {                     //use this to avoid duplication about code.
            code += keyword[i];
            ch = keyword[i];
        }


    }
    return code;
}

string Make_Rest_Code(string code) {                // use this fuction to remove code's alphabet on the alphabet A to Y.
    string fullCode = "ABCDEFGHIJKLMNOPQRSTUVWXY";

    for (size_t i = 0; i < code.length(); i++)
    {
        int index = 0;
        index = fullCode.find(code[i]);         // find positon of alphabet in the code.

        fullCode.erase(index, 1);               //erase it.

    }

    return fullCode;
}

int main()
{
    string data;                //get data from file.
    string code;
    string restCode;

    int count1 = 0;
    int count2 = 0;

    char chart[5][5];

    ifstream inputFile;
    inputFile.open("c:\\temp\\mp5.txt");

    getline(inputFile, data);                   // get whole line from the file.
    cout << "Keyword is " << data << endl;

    code = keyWord_In_Array(data);

    restCode = Make_Rest_Code(code);

    for (size_t i = 0; i < size(chart); i++)
    {

        for (size_t j = 0; j < size(chart[i]); j++)
        {
            if (count1 < code.length()) {           // use this condition to put code's alphabet first.

                chart[i][j] = code[count1];
                count1++;
            }
            else {
                chart[i][j] = restCode[count2];
                count2++;
            }
        }

    }


    // use this codes to show array for users.


    cout << endl << endl;

    cout << "         Col 0  Col 1  Col 2  Col 3  Col 4" << endl;
    cout << "        __________________________________" << endl;

    for (size_t i = 0; i < size(chart); i++)
    {
        printf("Row %d:", i);

        for (size_t j = 0; j < size(chart[i]); j++)
        {
            cout << " |  ";
            printf("%c ", chart[i][j]);
        }
        cout << " |\n";
    }

    cout << "******************************************" << endl;



    while (!inputFile.eof()) {
        getline(inputFile, data);

        cout << data.substr(2) << endl;     //use substr to remove useless data.("D "and"E ")

        string convertString = "";


        if (data[0] == 'D') {               // get first position of data to decrypt data.


            for (size_t i = 2; i < data.size(); i++)
            {
                char convertValue = ' ';


                for (size_t j = 0; j < size(chart); j++)
                {

                    for (size_t k = 0; k < size(chart[j]); k++) {
                        if (data[i] == chart[j][k]) {
                            convertValue = chart[k][j];
                            goto end;                               // if find same value on the arra, get out of for state to move (end:)
                        }
                        else {
                            convertValue = data[i];                 // if doesn't find data on the array, save same value on the convertValue.
                        }
                    }
                }
            end:                                                    // put data on the string.
                convertValue = tolower(convertValue);

                convertString += convertValue;
            }

            cout << "Decrypt to: " << endl;
            cout << convertString << endl;
            cout << "******************************************" << endl;

        }
        else if (data[0] == 'E') {                                  // get data[0] to encrypt data.


            for (size_t i = 2; i < data.size(); i++)
            {
                char convertValue = ' ';

                for (size_t j = 0; j < size(chart); j++)
                {

                    for (size_t k = 0; k < size(chart[j]); k++) {
                        if (data[i] == tolower(chart[j][k])) {          // data is upper letter, so make lower.
                            convertValue = chart[k][j];
                            goto end2;
                        }
                        else {
                            convertValue = data[i];
                        }


                    }
                }
            end2:

                convertValue = toupper(convertValue);

                convertString += convertValue;
            }


            cout << "Encrypt to: " << endl;
            cout << convertString << endl;
            cout << "******************************************" << endl;
        }
    }

    cout << "Have fun!!" << endl;



    return 0;
}