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#include "stdafx.h"
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <cstdlib>
#include <iomanip>
#include <fstream>
using namespace std;
int checkpseudo(string text);
void checkMachine(ofstream& outputST , ofstream& demoLT , int& LC , int& L , string text0 , string text1 , string text2);
void checkLabel(ofstream& outputST, int& LC , int& L , string text0 , string text1 , string text2);
void checkDS(ofstream& outputST , int& LC , int& L , string text0 , string text1 , string text2);
void checkDC(ofstream& outputST , int& LC , int& L , string text0 , string text1 , string text2);
void checkLTORG(ofstream& outputLT , ofstream& demoLT , int& LC);
void checkEND(ofstream& outputLT , ofstream& demoLT , int& LC);
int _tmain(int argc, _TCHAR* argv[])
{
int L = 0 , LC = 0 , i = 0;
string field[3];
char read[100];
char *pch;
ifstream readfile;
ofstream output2 , outputST , demoLT , outputLT;
readfile.open("input1.txt");
output2.open("input2.txt");
outputST.open("ST.txt");
demoLT.open("LT.DAT");
outputLT.open("LT.txt");
if(!readfile)
{
cerr << "Can not open file \"input1.txt\" " << endl;
exit(1);
}
if(!output2)
{
cerr << "Can not open file \"input2.txt\" " << endl;
exit(2);
}
if(!outputST)
{
cerr << "Can not open file \"ST.txt\" " << endl;
exit(102);
}
while(!readfile.eof())
{
//cin >> read;
readfile.getline(read,100);
//====================== Field Filter ================
pch = strtok(read," ");
i = 0;
while (pch != NULL)
{
//cout << pch << endl;
field[i] = pch;
pch = strtok(NULL, " ");
i++;
}
//====================================================
if(i == 2)
{
field[2] = field[1];
field[1] = field[0];
field[0] = "";
}
if(i == 1)
{
field[2] = "";
field[1] = field[0];
field[0] = "";
}
cout << left << setw(10) << field[0] << setw(10) << field[1] << setw(10) << field[2] << endl;
switch(checkpseudo(field[1]))
{
case 1 : checkDS(outputST , LC , L , field[0] , field[1] , field[2]); break;
case 2 : checkDC(outputST , LC , L , field[0] , field[1] , field[2]); break;
case 3 : checkLabel(outputST, LC , L , field[0] , field[1] , field[2]); break;
case 4 : break;
case 5 : break;
case 6 : checkEND(outputLT , demoLT , LC);break;
case 7 : checkLTORG(outputLT , demoLT , LC); break;
case 8 : checkLabel(outputST, LC , L , field[0] , field[1] , field[2]); break;
case 0 : checkMachine(outputST , demoLT , LC , L , field[0] , field[1] , field[2]); break;
}
output2 << left << setw(10) << field[0] << setw(10) << field[1] << setw(10) << field[2] << endl;
field[0] = "";
field[1] = "";
field[2] = "";
}
return 0;
}
int checkpseudo(string text)
{
if(text == "DS")
{return 1;}
else if(text == "DC")
{return 2;}
else if(text == "EQU")
{return 3;}
else if(text == "USING")
{return 4;}
else if(text == "DROP")
{return 5;}
else if(text == "END")
{return 6;}
else if(text == "LTORG")
{return 7;}
else if(text == "START")
{return 8;}
else
{return 0;}
}
void checkLabel(ofstream& outputST , int& LC , int& L , string text0 , string text1 , string text2)
{
int tempLC = LC;
char relocation = 'R';
if(text0 != "")
{
if(text1 == "EQU" || text1 == "START")
{
L = 1;
if(text1 == "EQU" && text2 != "*")
{
LC = atol(text2.c_str()); // Strint to int
relocation = 'A';
}
else
{
relocation = 'R';
}
}
else
{
L = 4;
}
outputST << left << setw(10) << text0 << setw(10) << LC << setw(10) << L << setw(10) << relocation << endl;
LC = tempLC;
}
}
void checkDS(ofstream& outputST , int& LC , int& L , string text0 , string text1 , string text2)
{
int tempLC = LC;
char relocation = 'R';
string lines = text2;
while(LC % 4 != 0)
{
LC ++;
}
L = 4;
string textOperand (text2 , 0 , text2.length()-1);
if(text0 != "")
{
outputST << left << setw(10) << text0 << setw(10) << LC << setw(10) << L << setw(10) << relocation << endl;
}
tempLC = atol(textOperand.c_str());
tempLC = tempLC * 4;
LC = LC + tempLC;
}
void checkDC(ofstream& outputST , int& LC , int& L , string text0 , string text1 , string text2)
{
int tempLC = LC;
int Count = 0 ;
char relocation = 'R';
while(LC % 4 != 0)
{
LC ++;
}
L = 4;
string textOperand = text2;
string delimiters = "F',";
unsigned int end;
unsigned int start = textOperand.find_first_not_of (delimiters);
while (start != string::npos)
{
end = textOperand.find_first_of (delimiters, start + 1);
string str= textOperand.substr (start , end - start);
start = textOperand.find_first_not_of (delimiters, end + 1);
Count++;
}
if(text0 != "")
{
outputST << left << setw(10) << text0 << setw(10) << LC << setw(10) << L << setw(10) << relocation << endl;
}
tempLC = Count * 4;
LC = tempLC;
}
void checkMachine(ofstream& outputST , ofstream& demoLT , int& LC , int& L , string text0 , string text1 , string text2)
{
char relocation = 'R';
string Check;
string s2(text1 , text1.length()-1 , 1);
if(s2 == "R")
L = 2;
else
L = 4;
int locationCut = text2.rfind("=");
if(locationCut != string::npos)
{
Check = text2.substr(locationCut + 1);
demoLT << left << setw(10) << Check << setw(10) << L << setw(10) << relocation << endl;
}
if(text0 != "")
{
outputST << left << setw(10) << text0 << setw(10) << LC << setw(10) << L << setw(10) << relocation << endl;
}
LC = LC + L;
}
void checkLTORG(ofstream& outputLT , ofstream& demoLT , int& LC)
{
ifstream readLT;
readLT.open("LT.DAT");
string field[4];
while(LC % 8 != 0)
{
LC ++;
}
while(!readLT.eof())
{
readLT >> field[0] >> field[1] >> field[2];
outputLT << left << setw(10) << field[0] << setw(10) << LC << setw(10) << field[1] << setw(10) << field[2] << endl;
int L = 4;
LC = LC + L;
}
}
void checkEND(ofstream& outputLT , ofstream& demoLT , int& LC)
{
ifstream readLT;
readLT.open("LT.DAT");
string field[4];
while(!readLT.eof())
{
readLT >> field[0] >> field[1] >> field[2];
outputLT << left << setw(10) << field[0] << setw(10) << LC << setw(10) << field[1] << setw(10) << field[2] << endl;
int L = 4;
LC = LC + L;
}
}
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