/*
 * Created on Jan 5, 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;

/**
 * @author yann
 * 
 * Displays annotations for a method in a given dictionary, otr displays the entire dictionary if no method is specified.
 */
public class Displayer {
	
	private static String meth = null;
	
	private static SignatureDictionary dict = null;
	
	public static void display(Signature sign) {
		System.out.println(sign.toString());
		/*Collection c = sign.getPartialSignatures();
		Iterator it = c.iterator();
		while (it.hasNext()) {
			PartialSignature element = (PartialSignature) it.next();
			System.out.println(sign);
			//element.display(System.out);
		}
		*/
	}
	
	private static void printHelp() {
		System.out.println("Usage : if_displayDico <options> ");
		System.out.println("where possible options include: ");

		System.out.println("-h/--help : print this help");
		System.out.println("-d/--dictionary <dict> : use <dict> as dictionary");
		System.out.println("-m/--method <meth> : display annotations for <meth>. If not set, display dictionary index.");
	}
	
	public static void main(String[] args) {
		
		int c;
		LongOpt[] longopts = new LongOpt[3];
		
		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');
		
		Getopt g = new Getopt("Displayer", args, "-:hd:m: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 '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 dictionary");
				printHelp();
				System.exit(1);
			}
			
			if (meth != null) {
				Signature sign = dict.findSignature(meth, true);
				if (sign == null) {
					System.err.println("Error: no such method \"" + meth
							+ "\" in dictionary");
					System.exit(1);
				}
				
				display(sign);
			} else {
				System.out.println("global");
				String[] index = dict.getIndex();
				for (int i = 0; i < index.length; i++) {
					System.out.println(index[i]);
					
					Signature sign = dict.findGlobalSignature(index[i]);
					if (sign == null) {
						System.err.println("Error: no such method \"" + meth
								+ "\" in dictionary");
						System.exit(1);
					}
					
					display(sign);
					
				}
				System.out.println("exact");
				index = dict.getExactIndex();
				for (int i = 0; i < index.length; i++) {
					System.out.println(index[i]);
					Signature sign = dict.findExactSignature(index[i]);
					if (sign == null) {
						System.err.println("Error: no such method \"" + meth
								+ "\" in dictionary");
						System.exit(1);
					}
					
					display(sign);
				}
			}
		}
		catch (ClassNotFoundException e) {
			System.err.println("Error: Dictionary contains unknown classes");
			System.exit(1);
		}
	}
}