//Self-Write.cpp - Creates Simple programs from IPO instructions
//Written and edited by Gilad "Speaker For The Dead" Barlev
//Final Edit on 11/06/2002 (DD/MM/YYYY)
//Re-Edited to Compile with g++ on 05/04/2007 (DD/MM/YYYY)
//Submitted as a Final Project for Mr. Cockrum's 2nd Period Foundations of Programming 2 Class

#include <iostream>
#include <algorithm>
#include <string>
#include <fstream>
#include <conio.h>
using namespace std;

void get(string prompt, string &input)  //get(prompt, variable);
{//get - prompts and gets a value
       cout << "Enter " << prompt << ": ";
       getline(cin, input);
       if (cin.fail())
       {
			cin.clear();
			cin.ignore(1000, '\n');
       }
}//end of get function

void get(string prompt, int &input)     //get(prompt, variable);
{//get - prompts anbd gets a value
       cout << "Enter " << prompt << ": ";
       cin >> input;
       if (cin.fail())
       {
			cin.clear();
			cin.ignore(1000, '\n');
       }
}//end of get function

//function prototypes
void addInitialize(string &);
void addInput(string &, string);
void addProcessing(string &, string[100], int &);
void addOutput(string &, string[100], int);


int main()
{//main - main function

       //declare fstream commands
       ofstream fout;
       ifstream fin;

       //intro
       cout << "Program Writer\n\n";

       //declare main function variables
       string filename;                        //name of file
       char x = 'n';                           //multi-use variable (character)
       int y;                                          //multi-use variable (integer)
       string initialize[100];         //initialization commands
       string input[100];                      //input commands
       string processing[100];         //processsing commands
       string output[100];                     //output commands
       int length[4] = {0,0,0,0};      //numbers of commands {initialize, input, processing, output}

       while (tolower(x) != 'y')
       {//create file
               get("Filename (not including extension)",filename);
               filename = filename + ".cpp";
               fin.open(filename.c_str());
               if (fin.is_open() )
               {//if file already exists
                       cout << "Erase existing file? (y/n)";
                       cin >> x;
               }//end if file already exists
               else
                       x = 'y';//if file DOES NOT exist
       }//end create file
       fin.close();

       //write beginning of file
       fout.open(filename.c_str());
       fout << "//Created using Program Writer\n"
                << "#include <iostream>\n"
                << "#include <string>\n"
                << "#include <cmath>\n"
                << "using namespace std;\n"
                << "int main()\n"
                << "{\n";

main:
       //main menu
       system("cls");
       cout << "\n\n***MAIN MENU***\n"
                << "(1)Add Input\n"
                << "(2)Add Calculation\n"
                << "(3)Add Output\n"
                << "(4)Done\n\n";
       get("selection",y);
       switch(y)
       {//add commands branch
       case 1:
               //add input
               addInitialize(initialize[length[0]]);
               addInput(input[length[1]], initialize[length[0]]);
               length[0]++;
               length[1]++;
               cout << "Input added";
               getch();
               goto main;

       case 2:
               //add calculation (processing)
               addProcessing(processing[length[2]], initialize, length[0]);
               length[2]++;
               cout << "Calculation added";
               getch();
               goto main;

       case 3:
               //add output
               addOutput(output[length[3]], initialize, length[0]);
               length[3]++;
               cout << "Output added";
               getch();
               goto main;

       }//end add commands branch

       //write commands to file
       for (y = 0; y < length[0]; y++)//write initializations
               fout << "\t" << initialize[y] << endl;
       for (y = 0; y < length[1]; y++)//write input
               fout << "\t" << input[y] << endl;
       for (y = 0; y < length[2]; y++)//write processing
               fout << "\t" << processing[y] << endl;
       for (y = 0; y < length[3]; y++)//write output
               fout << "\t" << output[y] << endl;

       //write end of file
       fout << "\tsystem(\"PAUSE\");\n"
            << "\treturn 0;\n"
            << "}\n";
       fout.close();
       cout << "\nProgram completed and ready for compliling...\n";
       system("PAUSE");
       return 0;

}//end of main function


void addInitialize(string &initialize)  //addInitialize(initialize command);
{//addInitialize - add initialization command

       //declare addInitialize variables
       int x = 0;      //multi-use variable (integer)
       string y;       //multi-use variable (string)

       //select variable type
       cout << "\nVARIABLE TYPES\n"
                        << "(1)Integer\n"
                        << "(2)Real Number\n"
                        << "(3)Character\n"
                        << "(4)String\n\n";
       while (x < 1 || x > 4)
               get ("selection", x);
       switch(x)
       {//select variable type branch
       case 1:
               //integer
               y = "int    ";
               break;
       case 2:
               //real number
               y = "float  ";
               break;
       case 3:
               //character
               y = "char   ";
               break;
       case 4:
               //string
               y = "string ";
       }//end select variable type branch
       initialize = y;//add variable type to command

       getline(cin, y);//debug
       //get name of variable
       get("name of variable", y);
       initialize = initialize + y;//add variable name to command

       //get initial value
       get ("initial value", y);
       //add initial value to command
       if (x == 1 || x == 2)
               initialize = initialize + " = " + y;
       else if (x == 3)
               initialize = initialize + " = " + "'" + y + "'";
       else
               initialize = initialize + " = " + "\"" + y + "\"";

       initialize = initialize + ";";//end command line

}//end of addInitialize function


void addInput(string &input, string variable)   //addInput(input command, variable);
{//addInput - add input command

       //declare addInput variables
       string x;                                               //multi-use variable (string)
       int y = variable.find(" = ",0); //multi-use variable (integer)

       variable.assign(variable, 7, y - 7);

       //get variable prompt
       get("Variable Prompt", x);

       //create input command
       input = "cout << \"Enter " + x + ": \";\n\t";
       if (variable.compare(0,6,"string") == 0)
               x = "getline(cin," + variable + ");";
       else
               x = "cin >> " + variable + ";";
       input = input + x;

}//end of addInput function


void addProcessing(string &processing, string variables[100], int &len) //addProcessing(processing command, variable list, length of variable list);
{//addProcessing - add processing command (calculation)

       //display list of variables
       cout << "AVAILABLE VARIABLES\n";
       for (int i = 0; i < len; i++)
               cout << "(" << i+1 << ") " << variables[i] << endl;
       cout << "(" << len+1 << ") New Variable\n";

       //select final variable
       int x = 0;      //multi-use variable (integer)
       while (x < 1 || x > len+1)
               get("Final Variable", x);
       if (x == len+1)
       {//create new variable
               addInitialize(variables[len]);
               len++;
       }//end create new variable
       x--;
       int y = variables[x].find(" = ",0);     //multi-use variable (integer)

       //write beginning of processing command
       processing.assign(variables[x], 7, y - 7);
       processing = processing + " = ";

       //get final variable
       string formula; //formula to get final variable
       cout << "Ex. (variable1 + variable2) * variable 3\n";
       //getline(cin, formula);//debug
       get("formula to get final (include names of variables)",formula);

       //write end of processing command
       processing = processing + formula + ";";

}//end of addProcessing function


void addOutput(string &output, string variables[100], int length)//addOutput(output command, variable list, length of variable list);
{//addOutput - add output command

       //display list of variables
       cout << "AVAILABLE VARIABLES\n";
       for (int i = 0; i < length; i++)
               cout << "(" << i+1 << ") " << variables[i] << endl;
       cout << "(" << length+1 << ") No Variable\n";
       //select variable
       int x = 0;      //multi-use variable (integer)
       while (x < 1 || x > length+1)
               get("Output Variable", x);
       x--;

       //get comment
       string y;       //multi-use variable (string)
       getline(cin, y);//debug
       get("Comment",y);

       //write output command
       if (x != length)
       {//write output command WITH variable
               int z = variables[x].find(" = ",0);     //multi-use variable (integer)
               output.assign(variables[x], 7, z-7);
               output = "cout << \"" + y + ":\" << " + output + "<< endl;";
       }//end write output command WITH variable
       else//write output command WITHOUT variable
               output = "cout << \"" + y + "\\n\";";

}//end of addOutput command


//This program was intended for private, education and entertainment uses only
//This program was written to be compiled using Microsoft Visual C++ v6.0  Minor editing may be needed for your compiler
//To contact Gilad "Speaker For The Dead" Barlev, send email to <the_sftd@yahoo.com>
//Gilad "Speaker For The Dead" Barlev assumes no responsibility for undesired effects this program may have on your machine.