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hexiConverter.cpp
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hexiConverter.cpp
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//============================================================================
// Name : hexiConverter.cpp
// Author :
// Version :
// Copyright : Your copyright notice
// Description : Hello World in C++, Ansi-style
//============================================================================
#include <iostream>
#include <string>
#include <sstream>
#include <math.h>
#include <stdlib.h>
#include <ctype.h>
#include <locale>
#include "HexString.h"
using namespace std;
void reportResult(ostream& output, string response){
output << response;
}
bool confirmOp(string oP){
if ((oP[0] == '+') || (oP[0] == '-') || (oP[0] == '*') || (oP[0] == '|') || (oP[0] == '&') || (oP[0] == '^')){
//cout << "Good Sign: " << oP[0] <<endl;
return true;
} else {
//cout << "Incorrect sign: " << oP[0] << endl;
return false;
}
}
bool confirmHex(string hexVal){
int len = hexVal.size();
int iStart = 0;
// check if hexVal is negative, if so, ingore check of - sign
if (hexVal[0] == '-'){
iStart = 1;
}
for (int i = iStart; i < len; ++i){
if (isxdigit(hexVal[i]) == false){
//cout << "NOT HEX: " << hexVal[i] << endl;
//cout << "program will halt!" << endl;
return false;
}
}
return true;
}
string readLine(istream& input){
string line;
getline(input, line);
return line;
}
bool extractHistory(string history[10], bool exit, ostream& output) {
for (int i = 0; i <= 9; ++i) {
if (history[i] != "") {
string temp = "> " + history[i] + "\n";
reportResult(output, temp);
}
}
exit = false;
return exit;
}
bool exitPrompt(string history[10], string& choice, istream& input, ostream& output) {
bool exit = true;
bool backToTop = true;
while (backToTop) {
//prompt for more
cout << "Exit (X), show up to last 10 (H), clear history (c), or continue (Y)?" << endl;
getline(input, choice);
if (choice == "x" || choice == "X") {
cout << "Goodbye" << endl;
backToTop = false;
// continue
} else if (choice == "y" || choice == "y") {
backToTop = false;
} else if (choice == "h" || choice == "H") {
cout << "History..." << endl;
exit = extractHistory(history, exit, output);
backToTop = true;
} else if (choice == "c" || choice == "C") {
for (int i = 0; i <= 9; ++i) {
history[i] = "";
}
cout << "History Reset!" << endl;
for (int i = 0; i <= 9; ++i) {
if (history[i] != "") {
cout << "> " << history[i] << endl;
}
}
backToTop = true;
} else {
cout << "You typed in: " << choice << "- unknown command!" << endl;
cout << "Exiting..." << endl;
backToTop = false;
}
}
return exit;
}
int parseCalculation(std::stringstream& stream, std::string& temp, string& hex1, bool& cont, string& operation, string& hex2) {
int counter = 1;
while (getline(stream, temp, ' ')) {
std::stringstream stream2(temp);
if (counter == 1) {
hex1 = temp;
std::locale loc;
for (std::string::size_type i = 0; i < hex1.size(); ++i)
hex1[i] = std::toupper(hex1[i], loc);
if (confirmHex(hex1) == false) {
}
} else if (counter == 2) {
operation = temp;
if (confirmOp(operation) == false) {
}
} else if (counter == 3) {
hex2 = temp;
std::locale loc;
for (std::string::size_type i = 0; i < hex1.size(); ++i)
hex2[i] = std::toupper(hex2[i], loc);
if (confirmHex(hex2) == false) {
}
}
++counter;
}
return counter;
}
void operateNums(bool cont, const string& hex1, const string& hex2, const string& operation, ostream& output) {
string ans = "";
if (cont != false) {
// convert each one;
HexString* num1 = new HexString(hex1);
HexString* num2 = new HexString(hex2);
cout << hex1 << endl;
cout << num1->toString() << endl;
// do calculations
cout << "Calculating..." << endl;
if (operation == "+") {
HexString numAns = *num1 + *num2;
// cout << numAns.value << endl;
ans = ">" + numAns.toString();
} else if (operation == "-") {
HexString numAns = *num1 - *num2;
// cout << numAns.value << endl;
ans = ">" + numAns.toString();
} else if (operation == "*") {
HexString numAns = *num1 * *num2;
//cout << numAns.value << endl;
ans = ">" + numAns.toString();
} else if (operation == "&") {
HexString numAns = *num1 & *num2;
// cout << numAns.value << endl;
ans = ">" + numAns.toString();
} else if (operation == "|") {
HexString numAns = *num1 | *num2;
// cout << numAns.value << endl;
ans = ">" + numAns.toString();
} else if (operation == "^") {
HexString numAns = *num1 ^ *num2;
// cout << numAns.value << endl;
ans = ">" + numAns.toString() ;
}
ans = ans + "\n";
reportResult(output, ans);
}
}
int readValPrintLoop(istream& input, ostream& output) {
//std::cout.setf(std::ios::unitbuf);
bool cont = true;
bool contLoop = true;
string sample;
string hex1;
string hex2;
string operation;
string choice;
string hexOp;
string ans;
string history[10];
//set history strings to null
for (int i = 0; i <= 9; ++i){
history[i] = "";
}
cout << "Welcome to calculator" << endl;
int historyCounter = 0;
while (contLoop == true){
cout << "Type in calculation:" << endl;
// set vars to blanks
hexOp = "";
// take in operation
hexOp = readLine(input);
// store in history
if (historyCounter == 10){
historyCounter = 0;
}
history[historyCounter] = hexOp;
++historyCounter;
// parse up by spaces
std::string temp;
std::stringstream stream(hexOp);
cout << "Parsing!" << endl;
parseCalculation(stream, temp, hex1, cont, operation, hex2);
operateNums(cont, hex1, hex2, operation, output);
//prompt for more
bool exit = exitPrompt(history, choice, input, output);
if (exit == true){
break;
} else {
string ans = "Continuing Calculator!\n";
reportResult(output, ans);
}
}
return 0;
}