util.java

ErGo是一个很早的Java通用围棋服务器(IGS/NNGS)客户端程序。有全部源码和文档

package ergo.util;

// $Id: Util.java,v 1.2 1999/08/13 01:20:43 sigue Exp $

/*
 *  Copyright (C) 1999  Carl L. Gay and Antranig M. Basman.
 *  See the file copyright.txt, distributed with this software,
 *  for further information.
 */

import java.util.Vector;
import java.util.Calendar;


/** The Util class is simply a place to put all the general utilities
 *  that can be implemented as static methods and don't really belong
 *  anywhere else.
 */
public class Util {

  private static String untabify (String s) {
    StringBuffer b = new StringBuffer(s.length() + 16);
    for (int i = 0; i < s.length(); i++) {
      char c = s.charAt(i);
      if (c != '\t')
	b.append(c);
      else
	b.append("        ");
    }
    return b.toString();
  }

  public static String[] splitIntoLines (String text) {
    int index = 0;
    int startIndex = 0;
    Vector v = new Vector(5, 5);
    while (true) {
      index = text.indexOf('\n', startIndex);
      if (index == -1) {
	v.addElement(untabify(text.substring(startIndex)));
	break;
      }
      else
	v.addElement(untabify(text.substring(startIndex, index - 1)));
      startIndex = index + 1;
    }
    String[] lines = new String[v.size()];
    for (int i = 0; i < lines.length; i++)
      lines[i] = (String) v.elementAt(i);
    return lines;
  }

  // Used in SGF default filenames.  Nothing like puttin' these little
  // fuckers at top-level...
  private static final void getSortableDateInternal (StringBuffer b, int x) {
    if (x < 10) b.append("0");
    b.append(x);
  }

  public static final String getSortableDate () {
    StringBuffer b = new StringBuffer();
    Calendar cal = new java.util.GregorianCalendar();
    cal.setTime(new java.util.Date()); // gets current date/time
    getSortableDateInternal(b, cal.get(Calendar.YEAR));
    getSortableDateInternal(b, cal.get(Calendar.MONTH) + 1);
    getSortableDateInternal(b, cal.get(Calendar.DAY_OF_MONTH));
    getSortableDateInternal(b, cal.get(Calendar.HOUR));
    getSortableDateInternal(b, cal.get(Calendar.MINUTE));
    return b.toString();
  }

  public static final void beep () {
    java.awt.Toolkit.getDefaultToolkit().beep();
  }

  private static final String osName = System.getProperty("os.name");

  public static final boolean isWindows () {
    return osName.toLowerCase().indexOf("windows") != -1;
  }

  public static final boolean isLinux () {
    return osName.toLowerCase().indexOf("linux") != -1;
  }

  public static final boolean isUnix () {
    return (osName.toLowerCase().indexOf("unix") != -1) || isLinux();
  }

  // this is actually easier and cleaner looking than a whole bunch
  // of casting between char and int...so don't laugh.
  public static final char[] DIGITS = {'0', '1', '2', '3', '4',
				       '5', '6', '7', '8', '9'};

} // end class Util