C/C++ 获取汉字拼音首字母

 1 #include <stdint.h>
 2 #include <stdio.h>
 3 #include <ctype.h>
 4 #include <string.h>
 5 
 6 bool between(uint32_t start,uint32_t end,uint32_t aim);
 7 char get_first_letter(wchar_t wchar);
 8 void get_first_letters(const char *szChinese,char piyinBuf[],const uint32_t maxBufLen,uint32_t &piyinBufLen);
 9 
10 
11 int32_t main()
12 {
13     char buf[1024] = {0};
14     uint32_t len = 0;
15     const char *szChinese = "qaz123获取汉字拼音";
16     get_first_letters(szChinese,buf,1024,len);
17     printf("%s\n",buf);
18     return 0;
19 }
20 
21 void get_first_letters(const char *szChinese,char piyinBuf[],const uint32_t maxBufLen,uint32_t &piyinBufLen)
22 {
23     uint8_t chr[3];
24     piyinBufLen = 0;
25     uint32_t chineseLen = strlen(szChinese);
26     for (uint32_t i = 0; i < chineseLen && piyinBufLen < maxBufLen; ++i)
27     {
28         uint8_t c = szChinese[i];
29         // 排除askii 码
30         if (isascii(c))
31         {
32             piyinBuf[piyinBufLen++] = c;
33         }
34         else
35         {
36             chr[0] = szChinese[i];
37             chr[1] = szChinese[++i];
38             chr[2] = 0;
39             wchar_t wchr = 0;
40             wchr =  (chr[0]  &  0xff)  <<  8;
41             wchr |= (chr[1]  &  0xff);
42             piyinBuf[piyinBufLen++] = toupper(get_first_letter(wchr));
43         }
44     }
45 }
46 
47 bool between(wchar_t start,wchar_t end,wchar_t aim)
48 {
49     if (start <= aim && aim <= end)
50     {
51         return true;
52     }
53     return false;
54 }
55 
56 char get_first_letter(wchar_t wchar)
57 {
58     if  (between(0xB0A1,0xB0C4,wchar))  return  ‘a‘;
59     if  (between(0XB0C5,0XB2C0,wchar))  return  ‘b‘;
60     if  (between(0xB2C1,0xB4ED,wchar))  return  ‘c‘;
61     if  (between(0xB4EE,0xB6E9,wchar))  return  ‘d‘;
62     if  (between(0xB6EA,0xB7A1,wchar))  return  ‘e‘;
63     if  (between(0xB7A2,0xB8c0,wchar))  return  ‘f‘;
64     if  (between(0xB8C1,0xB9FD,wchar))  return  ‘g‘;
65     if  (between(0xB9FE,0xBBF6,wchar))  return  ‘h‘;
66     if  (between(0xBBF7,0xBFA5,wchar))  return  ‘j‘;
67     if  (between(0xBFA6,0xC0AB,wchar))  return  ‘k‘;
68     if  (between(0xC0AC,0xC2E7,wchar))  return  ‘l‘;
69     if  (between(0xC2E8,0xC4C2,wchar))  return  ‘m‘;
70     if  (between(0xC4C3,0xC5B5,wchar))  return  ‘n‘;
71     if  (between(0xC5B6,0xC5BD,wchar))  return  ‘o‘;
72     if  (between(0xC5BE,0xC6D9,wchar))  return  ‘p‘;
73     if  (between(0xC6DA,0xC8BA,wchar))  return  ‘q‘;
74     if  (between(0xC8BB,0xC8F5,wchar))  return  ‘r‘;
75     if  (between(0xC8F6,0xCBF0,wchar))  return  ‘s‘;
76     if  (between(0xCBFA,0xCDD9,wchar))  return  ‘t‘;
77     if  (between(0xCDDA,0xCEF3,wchar))  return  ‘w‘;
78     if  (between(0xCEF4,0xD188,wchar))  return  ‘x‘;
79     if  (between(0xD1B9,0xD4D0,wchar))  return  ‘y‘;
80     if  (between(0xD4D1,0xD7F9,wchar))  return  ‘z‘;
81     return  ‘\0‘;
82 }