Lucene.Net  3.0.3
Lucene.Net is a port of the Lucene search engine library, written in C# and targeted at .NET runtime users.
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Character.cs
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1 /*
2  *
3  * Licensed to the Apache Software Foundation (ASF) under one
4  * or more contributor license agreements. See the NOTICE file
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8  * "License"); you may not use this file except in compliance
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11  * http://www.apache.org/licenses/LICENSE-2.0
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20 */
21 
22 namespace Lucene.Net.Support
23 {
24  /// <summary>
25  /// Mimics Java's Character class.
26  /// </summary>
27  public class Character
28  {
29  private const char charNull = '\0';
30  private const char charZero = '0';
31  private const char charA = 'a';
32 
33  /// <summary>
34  /// </summary>
35  public static int MAX_RADIX
36  {
37  get
38  {
39  return 36;
40  }
41  }
42 
43  /// <summary>
44  /// </summary>
45  public static int MIN_RADIX
46  {
47  get
48  {
49  return 2;
50  }
51  }
52 
53  /// <summary>
54  ///
55  /// </summary>
56  /// <param name="digit"></param>
57  /// <param name="radix"></param>
58  /// <returns></returns>
59  public static char ForDigit(int digit, int radix)
60  {
61  // if radix or digit is out of range,
62  // return the null character.
63  if (radix < Character.MIN_RADIX)
64  return charNull;
65  if (radix > Character.MAX_RADIX)
66  return charNull;
67  if (digit < 0)
68  return charNull;
69  if (digit >= radix)
70  return charNull;
71 
72  // if digit is less than 10,
73  // return '0' plus digit
74  if (digit < 10)
75  return (char)((int)charZero + digit);
76 
77  // otherwise, return 'a' plus digit.
78  return (char)((int)charA + digit - 10);
79  }
80  }
81 }