MacroP2.java

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.HashMap;
import java.util.Vector;

public class MacroP2 {

	public static void main(String[] args) throws Exception {
		BufferedReader irb=new BufferedReader(new FileReader("intermediate.txt"));
		BufferedReader mdtb=new BufferedReader(new FileReader("mdt.txt"));
		BufferedReader kpdtb=new BufferedReader(new FileReader("kpdt.txt"));
		BufferedReader mntb=new BufferedReader(new FileReader("mnt.txt"));
		
		FileWriter fr=new FileWriter("pass2.txt");
		
		HashMap<String, MNTEntry> mnt=new HashMap<>();
		HashMap<Integer, String> aptab=new HashMap<>();
		HashMap<String,Integer> aptabInverse=new HashMap<>();
		
		Vector<String>mdt=new Vector<String>();
		Vector<String>kpdt=new Vector<String>();
		
		int pp,kp,mdtp,kpdtp,paramNo;
		String line;
		while((line=mdtb.readLine())!=null)
		{
			mdt.addElement(line);
		}
		while((line=kpdtb.readLine())!=null)
		{
			kpdt.addElement(line);
		}
		while((line=mntb.readLine())!=null)
		{
			String parts[]=line.split("\\s+");
			mnt.put(parts[0], new MNTEntry(parts[0], Integer.parseInt(parts[1]), Integer.parseInt(parts[2]), Integer.parseInt(parts[3]), Integer.parseInt(parts[4])));
			
		}
		
		while((line=irb.readLine())!=null)
		{
			String []parts=line.split("\\s+");
			if(mnt.containsKey(parts[0]))
			{
				pp=mnt.get(parts[0]).getPp();
				kp=mnt.get(parts[0]).getKp();
				kpdtp=mnt.get(parts[0]).getKpdtp();
				mdtp=mnt.get(parts[0]).getMdtp();
				paramNo=1;
				for(int i=0;i<pp;i++)
				{ 
					parts[paramNo]=parts[paramNo].replace(",", "");
					aptab.put(paramNo, parts[paramNo]);
					aptabInverse.put(parts[paramNo], paramNo);
					paramNo++;
				}
				int j=kpdtp-1;
				for(int i=0;i<kp;i++)
				{
					String temp[]=kpdt.get(j).split("\t");
					aptab.put(paramNo,temp[1]);
					aptabInverse.put(temp[0],paramNo);
					j++;
					paramNo++;
				}
				
				for(int i=pp+1;i<parts.length;i++)
				{
					parts[i]=parts[i].replace(",", "");
					String splits[]=parts[i].split("=");
					String name=splits[0].replaceAll("&", "");
					aptab.put(aptabInverse.get(name),splits[1]);
				}
				int i=mdtp-1;
				while(!mdt.get(i).equalsIgnoreCase("MEND"))
				{
					String splits[]=mdt.get(i).split("\\s+");
					fr.write("+");
					for(int k=0;k<splits.length;k++)
					{
						if(splits[k].contains("(P,"))
						{
							splits[k]=splits[k].replaceAll("[^0-9]", "");//not containing number
							String value=aptab.get(Integer.parseInt(splits[k]));
							fr.write(value+"\t");
						}
						else
						{
							fr.write(splits[k]+"\t");
						}
					}
					fr.write("\n");	
					i++;
				}
				
				aptab.clear();
				aptabInverse.clear();
			}
			else
			{
				fr.write(line+"\n");
			}
			
	}
	
	fr.close();
	mntb.close();
	mdtb.close();
	kpdtb.close();
	irb.close();
	}
}