/*
 * Created on Feb 28, 2005
 */
package fr.lifl.stc.stan.tools;

import fr.lifl.stc.stan.signature.Signature;
import fr.lifl.stc.stan.signature.SignatureDictionary;
import gnu.getopt.Getopt;
import gnu.getopt.LongOpt;

import java.io.FileNotFoundException;
import java.io.IOException;

/**
 * @author yann
 */
public class Extracter {
	
	private static String meth = null;
	
	private static SignatureDictionary dict = null;
	
	private static SignatureDictionary target = null;
	
	private static void printHelp() {
		System.out.println("-h/--help : print this help");
		System.out.println("-d/--dictionary <dict> : use <dict> as source dictionary");
		System.out.println("-t/--target <dict> : use <dict> as target dictionary");
		System.out.println("-m/--method <meth> : transfer signature for this method");
	}
	
	public static void main(String[] args) {
		int c;
		//String arg;
		LongOpt[] longopts = new LongOpt[4];
		
		longopts[0] = new LongOpt("help", LongOpt.NO_ARGUMENT, null, 'h');
		longopts[1] = new LongOpt("dictionary", LongOpt.REQUIRED_ARGUMENT, null, 'd');
		longopts[2] = new LongOpt("method", LongOpt.REQUIRED_ARGUMENT, null, 'm');
		longopts[3] = new LongOpt("target", LongOpt.REQUIRED_ARGUMENT, null, 't');
		
		Getopt g = new Getopt("Displayer", args, "-:hd:m:t:W;", longopts);
		
		try {
			while ((c = g.getopt()) != -1)
				switch (c) {
				case 'h':
					printHelp();
					System.exit(0);
					break;
				case 'd':
					dict = new SignatureDictionary(g.getOptarg());
					break;
				case 'm':
					meth = g.getOptarg();
					break;
				case 't':
					target = new SignatureDictionary(g.getOptarg());
					break;
				case 'W':
					System.out
					.println("You tried a -W with an incorrect long option name");
					break;
				case ':':
					System.out.println("You need an argument for option " + (char) g.getOptopt());
					break;
				case '?':
					System.out.println("The option '" + (char) g.getOptopt() + "' is not valid");
					break;
				default:
					System.out.println("getopt(): unknown option " + c);
				break;
				}
			
			if (dict == null) {
				System.err.println("You must provide a source dictionary");
				System.exit(1);
			}
			if (meth == null) {
				System.err.println("You must provide a method");
				System.exit(1);
			}
			if (target == null) {
				System.err.println("You must provide a target dictionary");
				System.exit(1);
			}
			
			Signature sign;
			sign = dict.findSignature(meth,true);
			if (sign == null) {
				System.err.println("Error: no such method \"" + meth + "\"in dictionary");
				System.exit(1);
			}
			
			//FIXME is this "true" ?
			target.putSignatureForcively(meth,sign, true);
			target.dump();
			
		} catch (ClassNotFoundException e) {
			System.err.println("Error: Dictionary contains unknown classes");
			System.exit(1);
		} catch (FileNotFoundException e) {
			System.err.println("Error: Dictionary file not found");
			System.exit(1);
		} catch (IOException e) {
			System.err.println("Error: IO error");
			System.exit(1);            
		}
	}
}