package net.sf.jour.util;
   
   import java.util.List;
   import java.util.Properties;
   import java.util.Vector;
   
   public abstract class CmdArgs {
   
   	/** 
  	 * This is usage examples:
  	 * @param args
  	 */
  	public static void main(String[] args) {
  		Properties argsp = CmdArgs.load(args);
  		if (argsp.getProperty("help") != null) {
  			//help();
  			System.exit(0);
  		}
  	}
  
  	public static int isArgsName(String name) {
  		if (name.startsWith("--")) {
  			name = name.substring(2);
  			return 2;
  		} else if (name.startsWith("-")) {
  			name = name.substring(1);
  			return 1;
  		}
  		return 0;
  	}
  
  	public static Properties load(String[] args) {
  		Properties properties = new Properties();
  		for (int i = 0; i < args.length; i++) {
  			String name = args[i];
  			String value = "true";
  			int prefix;
  			if ((prefix = isArgsName(name)) > 0) {
  				name = name.substring(prefix);
  				if ((i + 1) < args.length) {
  					if (isArgsName(args[i + 1]) == 0) {
  						value = args[i + 1];
  						i++;
  					}
  				}
  				Object has = properties.get(name);
  				if (has == null) {
  					properties.put(name, value);
  				} else if (has instanceof List) {
  					((List) has).add(value);
  				} else {
  					List valueList = new Vector();
  					valueList.add((String) has);
  					valueList.add(value);
  					properties.put(name, valueList);
  				}
  			}
  		}
  		return properties;
  	}
  
  }