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package com.typeinfo;

import static net.mindview.util.Print.print;

import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.regex.Pattern;

/**
 * Using reflection to show all the methods of a class,
 * even if the methods are defined in the base class.
 * {Args: ShowMethods}
 * @author bofei
 *
 */
public class ShowMethods {
    private static String usage = 
        "usage:\n" +
        "ShowMethods qualified.class.name\n" +
        "To show all methods in class or:\n" +
        "ShowMethods qualified.class.name word\n" +
        "To search for methods involving 'word'";
    //匹配（若干字词符 . ）
    private static Pattern p = Pattern.compile("\\w+\\.");
    public static void main(String[] args) {
        if (args.length < 1) {
            print(usage);
            System.exit(0);
        }
        int lines = 0;
        try {
            Class<?> c = Class.forName(args[0]);
            Method[] methods = c.getMethods();
            Constructor[] ctors = c.getConstructors();
            if (args.length == 1) {
                for (Method method : methods)
                  print(
                    //去掉 包名.类名.
                    //若能去掉象java.lang这样的限定词，结果显然会更令人满意
                    p.matcher(method.toString()).replaceAll(""));
                for (Constructor ctor :ctors)
                    print(p.matcher(ctor.toString()).replaceAll(""));
                lines = methods.length + ctors.length;
            } else {
                for (Method method : methods)
                    if (method.toString().indexOf(args[1]) != -1) {
                        print(
                            p.matcher(method.toString()).replaceAll(""));
                        lines++;
                    }
                for (Constructor ctor : ctors)
                    if (ctor.toString().indexOf(args[1])  != -1) {
                        print(p.matcher(
                            ctor.toString()).replaceAll(""));
                        lines++;
                    }
            }
            
        } catch (ClassNotFoundException e) {
            print("No such class: " + e);
        }
        
    }
}