//MyUtil.java -- by tsaiwn@csie.nctu.edu.tw
// some static utility functions for Application
import java.applet.*;  import java.awt.*;  import java.net.*;
import java.io.*;
public class MyUtil {
 /// newCodeBase() --- get the user's current working Directory
   static public URL newCodeBase( ) {    // for Application
       URL codeBase = null;
       try{
          codeBase = new URL("file:" + System.getProperty("user.dir") + "/");
       } catch ( Exception e ) {
          // maybe it is an Applet, use getCodeBase() or getDocumentBase()
       }
       return codeBase;
   }
 /// same as newCodeBase() --- get the user's current working Directory
   static public URL getMyCodeBase( ) {    // for Application
       return newCodeBase( );
   }

 /// getAudio(filename) --- get AudioClip from an Application (not Applet)
   static public AudioClip getAudio(String filename) {
       return getAudio(newCodeBase( ), filename);
   } // getAudio(url)
 /// getAudio(url, filename)
   static public AudioClip getAudio(URL base, String filename) {
       AudioClip audio = null;
       try{ audio = Applet.newAudioClip( new URL(base+ filename) );
       } catch ( Exception e ) {
          // maybe it is an Applet, use getAudioClip(URL url) 
          // .. or getAudioClip(URL url, String filename)  in Applet
       }
       return audio;
   } // getAudio(url, filename)
 /// getAudio(url)  --- get AudioClip from an Application (not Applet)
   static public AudioClip getAudio(URL url) {
       AudioClip audio = null;
       try{ audio = Applet.newAudioClip( url );   // JDK1.2 static method
       } catch ( Exception e ) {;}
       return audio;
   } // getAudio(url)

 /// get Image from a local file --- for Application (not Applet)
   static public Image newImage(String filename) {
       Image img = null;
       try{ Toolkit tkt = Toolkit.getDefaultToolkit( );
            img = tkt.getImage(filename);  //for application only
            // img = getImage(getCodeBase( ), filename); //for Applet
       } catch ( Exception e ) {;}
       return img;
   } // newImage(filename)
   static public Image getMyImage(String filename) {
       return newImage(filename);
   } // getMyImage(filename)
 /// get Image from a URL
   static public Image newImage(URL url) {
       Image img = null;
       try{ Toolkit tkt = Toolkit.getDefaultToolkit( );
            img = tkt.getImage(url);  //for application only
       } catch ( Exception e ) {;}
       return img;
   } // newImage(url)

  /// @@@ 寫個 function to createMyOwnCursor 方便使用@@@
   static public Cursor createMyCursor(String filename) throws
                                   IndexOutOfBoundsException {
       Cursor csr = null;
       try{
          Toolkit tkt = Toolkit.getDefaultToolkit( );
          Image csrImg = tkt.getImage(filename);  //for application
          //Image csrImg = getImage(getCodeBase( ), filename); //for Applet
          csr = tkt.createCustomCursor(csrImg, new Point(1,1), filename);
       } catch ( Exception e ) {
          csr = new Cursor(Cursor.HAND_CURSOR);
       }
       return csr;
   } // createMyCursor

/// some printf utilities
   public static void print(String s) throws IOException { printf(s); }
   public static void printf(String s) throws IOException {
      System.out.print(s);
   }
   public static void println(String s) throws IOException {
      System.out.println(s);
   }
   public static void print(long n) throws IOException { printf(n); }
   public static void printf(long n) throws IOException {
      System.out.print(""+n);
   }
   public static void print(int n) throws IOException { printf(n); }
   public static void printf(int n) throws IOException {
      System.out.print(""+n);
   }
  /// print n as w columns width
   public static void printf(short n, int w) throws IOException {
      printf((long)n, w);   // print n as w columns
   }
   public static void printf(int n, int w) throws IOException {
      printf((long)n, w);
   }
   public static void printf(long n, int w) throws IOException {
      long tmp = 1;   // print n as w columns
      long nabs = n; if(n<0) {nabs = -nabs; --w; }  // ensure positive
      for(;;) {
          tmp *= 10;
          if(tmp > nabs) break;
          --w;    // w is the expected Width (number of digits)
      }
      for(;;) {
          if(--w <= 0) break;
          System.out.print(" ");   // necessary leading space
      }
      System.out.print(""+n);
   }

  /// a main program to test my printf functions
   public static void main(String[]p) throws IOException {
       printf("=="); printf(1, 1); printf("==\n");
       printf("=="); printf(2, 2); printf("==\n");
       printf("=="); printf(3, 3); printf("==\n");
       printf("=="); printf(11, 1); printf("==\n");
       printf("=="); printf(12, 2); printf("==\n");
       printf("=="); printf(13, 3); printf("==\n");
       printf("=="); printf(111, 1); printf("==\n");
       printf("=="); printf(112, 2); printf("==\n");
       printf("=="); printf(113, 3); printf("==\n");
       printf("=="); printf(114, 4); printf("==\n");
       printf("=="); printf(115, 5); printf("==\n");
       printf("=="); printf(-11, 1); printf("==\n");
       printf("=="); printf(-12, 2); printf("==\n");
       printf("=="); printf(-13, 3); printf("==\n");
       printf("=="); printf(-14, 4); printf("==\n");
       printf("=="); printf(-15, 5); printf("==\n");
       printf("=="); printf(-116, 6); printf("==\n");
       try {
          AudioClip sound = null; sound = getAudio("laugh.au");
          if(sound != null) { sound.play( ); Thread.sleep(2588); }
       } catch(Exception e) {;}
       printf("Thank you!\n");  System.exit(0);
   }
} // class MyUtil