Percent


1   /*
2    * libreplacer, Java library to support C-sprintf alike text formatting
3    * Copyright (C) 2002 Tanesha FTPD Project, www.tanesha.net
4    * 
5    * This library is free software; you can redistribute it and/or
6    * modify it under the terms of the GNU Lesser General Public
7    * License as published by the Free Software Foundation; either
8    * version 2.1 of the License, or (at your option) any later version.
9    * 
10   * This library is distributed in the hope that it will be useful,
11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   * Lesser General Public License for more details.
14   * 
15   * You should have received a copy of the GNU Lesser General Public
16   * License along with this library; if not, write to the Free Software
17   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18   */
19  /*
20   * $Id: Percent.java,v 1.4 2002/12/12 13:06:48 flower Exp $
21   */
22  package org.tanesha.replacer.formatters;
23  
24  // project imports
25  import org.tanesha.replacer.ReplacerFormat;
26  
27  /**
28   * Stringformatter helper to format percents.
29   * <p>
30   * It can be used to create output like;
31   * <code><pre>######----</pre></code>
32   *
33   * @author Soren, www.tanesha.net
34   */
35  public class Percent implements StringFormatter {
36  
37      private float _per;
38      private char _a, _b;
39  
40      /**
41       * Creates a new percent formatter.
42       *
43       * @param per the percent value, eg, 0.20 = 20%
44       * @param a the active char, used for the active part of the percent bar, eg. '#'
45       * @param b the inactive char, used for the inactive part of the percent bar, eg '-'
46       */
47      public Percent(float per, char a, char b) {
48          _per = per;
49          _a = a;
50          _b = b;
51      }
52  
53      // Implements StringFormatter
54      public String   format(boolean align, int p, int q) {
55  
56          if (p == ReplacerFormat.UNDEF)
57              return "<no width specified>";
58  
59          int gw = Math.round(_per * p);
60  
61          StringBuffer   o = new StringBuffer  ();
62  
63          for (int i = 0; i < gw; i++)
64              o.append(_a);
65          for (int i = gw; i < p; i++)
66              o.append(_b);
67  
68          return o.toString();
69      }
70  
71  }
72
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