strings.java

一个类似于openJMS分布在ObjectWeb之下的JMS消息中间件。

  public static final void toString(StringBuffer output, byte[] tab) {
    if (tab == null) {
      output.append("null");
      return;
    }

    output.append("(");
    int size = tab.length;
    output.append(size);
    if (listMax == -1 || size <= listMax) {
      for (int i = 0; i < size; i ++) {
	output.append(",");
	output.append(tab[i]);
      }
    } else {
      int border = size / 2;
      if (listBorder < border)
	border = listBorder;
      for (int i = 0; i < border; i ++) {
	output.append(",");
	output.append(tab[i]);
      }
      output.append(",...");
      for (int i = border; i > 0; i --) {
	output.append(",");
	output.append(tab[size - i]);
      }
    }
    output.append(")");
  }

  /**
   * Provides a string representation of an array of chars.
   * Uses the <code>listMax</code> and <code>listBorder</code> variables.
   *
   * @param output	a buffer to print the object into
   * @param tab		the array to print
   */
  public static final void toString(StringBuffer output, char[] tab) {
    if (tab == null) {
      output.append("null");
      return;
    }

    output.append("(");
    int size = tab.length;
    output.append(size);
    if (listMax == -1 || size <= listMax) {
      for (int i = 0; i < size; i ++) {
	output.append(",");
	output.append(tab[i]);
      }
    } else {
      int border = size / 2;
      if (listBorder < border)
	border = listBorder;
      for (int i = 0; i < border; i ++) {
	output.append(",");
	output.append(tab[i]);
      }
      output.append(",...");
      for (int i = border; i > 0; i --) {
	output.append(",");
	output.append(tab[size - i]);
      }
    }
    output.append(")");
  }

  /**
   * Provides a string representation of an array of shorts.
   * Uses the <code>listMax</code> and <code>listBorder</code> variables.
   *
   * @param output	a buffer to print the object into
   * @param tab		the array to print
   */
  public static final void toString(StringBuffer output, short[] tab) {
    if (tab == null) {
      output.append("null");
      return;
    }

    output.append("(");
    int size = tab.length;
    output.append(size);
    if (listMax == -1 || size <= listMax) {
      for (int i = 0; i < size; i ++) {
	output.append(",");
	output.append(tab[i]);
      }
    } else {
      int border = size / 2;
      if (listBorder < border)
	border = listBorder;
      for (int i = 0; i < border; i ++) {
	output.append(",");
	output.append(tab[i]);
      }
      output.append(",...");
      for (int i = border; i > 0; i --) {
	output.append(",");
	output.append(tab[size - i]);
      }
    }
    output.append(")");
  }

  /**
   * Provides a string representation of an array of ints.
   * Uses the <code>listMax</code> and <code>listBorder</code> variables.
   *
   * @param output	a buffer to print the object into
   * @param tab		the array to print
   */
  public static final void toString(StringBuffer output, int[] tab) {
    if (tab == null) {
      output.append("null");
      return;
    }

    output.append("(");
    int size = tab.length;
    output.append(size);
    if (listMax == -1 || size <= listMax) {
      for (int i = 0; i < size; i ++) {
	output.append(",");
	output.append(tab[i]);
      }
    } else {
      int border = size / 2;
      if (listBorder < border)
	border = listBorder;
      for (int i = 0; i < border; i ++) {
	output.append(",");
	output.append(tab[i]);
      }
      output.append(",...");
      for (int i = border; i > 0; i --) {
	output.append(",");
	output.append(tab[size - i]);
      }
    }
    output.append(")");
  }

  /**
   * Provides a string representation of an array of longs.
   * Uses the <code>listMax</code> and <code>listBorder</code> variables.
   *
   * @param output	a buffer to print the object into
   * @param tab		the array to print
   */
  public static final void toString(StringBuffer output, long[] tab) {
    if (tab == null) {
      output.append("null");
      return;
    }

    output.append("(");
    int size = tab.length;
    output.append(size);
    if (listMax == -1 || size <= listMax) {
      for (int i = 0; i < size; i ++) {
	output.append(",");
	output.append(tab[i]);
      }
    } else {
      int border = size / 2;
      if (listBorder < border)
	border = listBorder;
      for (int i = 0; i < border; i ++) {
	output.append(",");
	output.append(tab[i]);
      }
      output.append(",...");
      for (int i = border; i > 0; i --) {
	output.append(",");
	output.append(tab[size - i]);
      }
    }
    output.append(")");
  }

  /**
   * Provides a string representation of an array of floats.
   * Uses the <code>listMax</code> and <code>listBorder</code> variables.
   *
   * @param output	a buffer to print the object into
   * @param tab		the array to print
   */
  public static final void toString(StringBuffer output, float[] tab) {
    if (tab == null) {
      output.append("null");
      return;
    }

    output.append("(");
    int size = tab.length;
    output.append(size);
    if (listMax == -1 || size <= listMax) {
      for (int i = 0; i < size; i ++) {
	output.append(",");
	output.append(tab[i]);
      }
    } else {
      int border = size / 2;
      if (listBorder < border)
	border = listBorder;
      for (int i = 0; i < border; i ++) {
	output.append(",");
	output.append(tab[i]);
      }
      output.append(",...");
      for (int i = border; i > 0; i --) {
	output.append(",");
	output.append(tab[size - i]);
      }
    }
    output.append(")");
  }

  /**
   * Provides a string representation of an array of doubles.
   * Uses the <code>listMax</code> and <code>listBorder</code> variables.
   *
   * @param output	a buffer to print the object into
   * @param tab		the array to print
   */
  public static final void toString(StringBuffer output, double[] tab) {
    if (tab == null) {
      output.append("null");
      return;
    }

    output.append("(");
    int size = tab.length;
    output.append(size);
    if (listMax == -1 || size <= listMax) {
      for (int i = 0; i < size; i ++) {
	output.append(",");
	output.append(tab[i]);
      }
    } else {
      int border = size / 2;
      if (listBorder < border)
	border = listBorder;
      for (int i = 0; i < border; i ++) {
	output.append(",");
	output.append(tab[i]);
      }
      output.append(",...");
      for (int i = border; i > 0; i --) {
	output.append(",");
	output.append(tab[size - i]);
      }
    }
    output.append(")");
  }

  /**
   * Provides a string representation of a list of objects.
   * This includes Vectors.
   * Uses the <code>listMax</code> and <code>listBorder</code> variables.
   *
   * @param output	a buffer to print the object into
   * @param list	the list of <code>Object</code> objects to print
   */
  public static final void toString(StringBuffer output, List list) {
    if (list == null) {
      output.append("null");
      return;
    }

    output.append("(");
    int size = list.size();
    output.append(size);
    if (listMax == -1 || size <= listMax || size <= (listBorder*2)) {
      for (Iterator it = list.iterator(); it.hasNext();) {
	output.append(",");
	toString(output, it.next());
      }
    } else {
      int border = size / 2;
      if (listBorder < border)
	border = listBorder;
      for (int i = 0; i < border; i ++) {
	output.append(",");
	toString(output, list.get(i));
      }
      output.append(",...");
      for (int i = border; i > 0; i --) {
	output.append(",");
	toString(output, list.get(size - i));
      }
    }
    output.append(")");
  }

  /**
   * Provides a string representation of a list of objects.
   * Calls <code>toString(StringBuffer, ...)</code>.
   *
   * @param list	the list of <code>Object</code> objects to print
   * @return		a string representation of the list
   */
  public static final String toString(List list) {
    if (list == null)
      return "null";

    StringBuffer output = new StringBuffer();
    toString(output, list);
    return output.toString();
  }

  /**
   * Provides a string representation of an unordered Collection of objects.
   * This includes HashSets.
   * Uses the <code>listMax</code> and <code>listBorder</code> variables.
   *
   * @param output	a buffer to print the object into
   * @param set		the collection to print
   */
  public static final void toString(StringBuffer output, Collection set) {
    if (set == null) {
      output.append("null");
      return;
    }

    output.append("(");
    int size = set.size();
    output.append(size);
    if (listMax != -1 && size > listMax)
      size = listBorder;
    for (Iterator it = set.iterator(); size > 0; size --) {
      output.append(",");
      toString(output, it.next());
    }
    output.append(")");
  }

  /**
   * Provides a string representation of an unordered Collection of objects.
   * Calls <code>toString(StringBuffer, ...)</code>.
   *
   * @param list	the collection to print
   * @return		a string representation of the list
   */
  public static final String toString(Collection set) {
    if (set == null)
      return "null";

    StringBuffer output = new StringBuffer();
    toString(output, set);
    return output.toString();
  }

  /**
   * Provides a string representation of a Map.
   * This includes HashTables.
   * Uses the <code>listMax</code> and <code>listBorder</code> variables.
   *
   * @param output	a buffer to print the object into
   * @param map		the map to print
   */
  public static final void toString(StringBuffer output, Map map) {
    if (map == null) {
      output.append("null");
      return;
    }

    toString(output, map.values());
  }

  /**
   * Provides a string representation of a Map.
   * Calls <code>toString(StringBuffer, ...)</code>.
   *
   * @param map		the map to print
   * @return		a string representation of the map
   */
  public static final String toString(Map map) {
    if (map == null)
      return "null";

    StringBuffer output = new StringBuffer();
    toString(output, map);
    return output.toString();
  }

  /**
   * Provides a string representation of a Map entry.
   *
   * @param output	a buffer to print the object into
   * @param entry	the map entry to print
   */
  public static final void toString(StringBuffer output, Map.Entry entry) {
    if (entry == null) {
      output.append("null");
      return;
    }
    output.append("(");
    output.append(entry.getKey());
    output.append(",");
    output.append(entry.getValue());
    output.append(")");
  }

}