1
/**//*==============================================================================
2
* Name: ChineseLetter
3 * Author: Zhu JianFeng
4 * Date: 2007-5-7
5 * DESC: Get the first letter of pinyin according to specified Chinese character code
6
==============================================================================*/
7
using System;
8using System.Collections.Generic;
9using System.Text;
10
11namespace Babyer
12
{
13 public class ChineseLetter
14
{
15 public static string GetFirstLetter(string chineseStr)
16 {
17 byte[] _cBs = System.Text.Encoding.Default.GetBytes(chineseStr);
18
19 if(_cBs.Length<2)
20 return chineseStr;
21
22 byte ucHigh, ucLow;
23 int nCode;
24
25 string strFirstLetter = string.Empty;
26
27 for (int i = 0; i < _cBs.Length; i++)
28 {
29
30 if (_cBs[i] < 0x80)
31 {
32 strFirstLetter += Encoding.Default.GetString(_cBs, i, 1);
33 continue;
34
}
35
36 ucHigh = (byte)_cBs[i];
37 ucLow = (byte)_cBs[i + 1];
38 if ( ucHigh < 0xa1 || ucLow < 0xa1)
39 continue;
40 else
41 // Treat code by section-position as an int type parameter,
42 // so make following change to nCode.
43 nCode = (ucHigh - 0xa0) * 100 + ucLow - 0xa0;
44
45 string str = FirstLetter(nCode);
46 strFirstLetter += str != string.Empty ? str : Encoding.Default.GetString(_cBs, i, 2);
47 i++;
48 }
49 return strFirstLetter;
50 }
51
52 /**//// <summary>
53 /// Get the first letter of pinyin according to specified Chinese character code
54 /// </summary>
55 /// <param name="nCode">the code of the chinese character</param>
56 /// <returns>receive the string of the first letter</returns>
57 public static string FirstLetter(int nCode)
58 {
59 string strLetter = string.Empty;
60
61 if(nCode >= 1601 && nCode < 1637) strLetter = "A";
62 if(nCode >= 1637 && nCode < 1833) strLetter = "B";
63 if(nCode >= 1833 && nCode < 2078) strLetter = "C";
64 if(nCode >= 2078 && nCode < 2274) strLetter = "D";
65 if(nCode >= 2274 && nCode < 2302) strLetter = "E";
66 if(nCode >= 2302 && nCode < 2433) strLetter = "F";
67 if(nCode >= 2433 && nCode < 2594) strLetter = "G";
68 if(nCode >= 2594 && nCode < 2787) strLetter = "H";
69 if(nCode >= 2787 && nCode < 3106) strLetter = "J";
70 if(nCode >= 3106 && nCode < 3212) strLetter = "K";
71 if(nCode >= 3212 && nCode < 3472) strLetter = "L";
72 if(nCode >= 3472 && nCode < 3635) strLetter = "M";
73 if(nCode >= 3635 && nCode < 3722) strLetter = "N";
74 if(nCode >= 3722 && nCode < 3730) strLetter = "O";
75 if(nCode >= 3730 && nCode < 3858) strLetter = "P";
76 if(nCode >= 3858 && nCode < 4027) strLetter = "Q";
77 if(nCode >= 4027 && nCode < 4086) strLetter = "R";
78 if(nCode >= 4086 && nCode < 4390) strLetter = "S";
79 if(nCode >= 4390 && nCode < 4558) strLetter = "T";
80 if(nCode >= 4558 && nCode < 4684) strLetter = "W";
81 if(nCode >= 4684 && nCode < 4925) strLetter = "X";
82 if(nCode >= 4925 && nCode < 5249) strLetter = "Y";
83 if(nCode >= 5249 && nCode < 5590) strLetter = "Z";
84
85 //if (strLetter == string.Empty)
86 // System.Windows.Forms.MessageBox.Show(String.Format("信息：\n{0}为非常用字符编码,不能为您解析相应匹配首字母！",nCode));
87 return strLetter;
88 }
89 }
90}
这里只能解析常用字符,如果非常用字符,我想只有用字典了,如果有更好的方法也欢迎一起探讨.
posted on 2007-05-07 17:15
Boon 阅读(1768)
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