C语言-字符编码转换：UTF与GB2312

依赖库libiconv，libiconv库的交叉编译不做描述，网上很多

  1 #include <stdio.h>
  2 #include <stdlib.h>
  3 #include <stdint.h>
  4 #include "iconv.h"
  5 #include "eventlist.h"
  6 
  7 static int ChangeCode( const char* pFromCode, const char* pToCode, const char* pInBuf,
  8                  size_t* piInLen,  char* pOutBuf,  size_t* piOutLen )
  9 {
 10     int iRet;
 11     char **pin = &pInBuf;  
 12     char **pout = &pOutBuf;  
 13     iconv_t hIconv;
 14     
 15     //printf("%s: outlen=%d, inlen=%d\n", __FUNCTION__, *piOutLen, *piInLen);
 16 
 17     //打开字符集转换
 18     hIconv = iconv_open( pToCode, pFromCode );
 19     if ( -1 == (int)hIconv )
 20     {
 21         perror("iconv_open");
 22         return -1;
 23     }
 24     //开始转换
 25     printf("%s: 1 outlen=%d\n", __FUNCTION__, *piOutLen);
 26     iRet = iconv( hIconv, pin, piInLen, pout, piOutLen );
 27     if ( -1 == iRet )
 28     {
 29         perror("iconv");
 30         return -1;  
 31     }
 32     printf("%s: 2 outlen=%d\n", __FUNCTION__, *piOutLen);
 33     
 34     //关闭字符集转换
 35     iconv_close( hIconv );
 36 
 37     **pout = '\0';
 38     return iRet;
 39 }
 40 
 41 static int MAIN_UTFToGb2312(char  * pcFrom, char * pcTo, int iMaxToLen)
 42 {
 43     char * psInBuf = NULL;
 44     char * psOutBuf = NULL;
 45     unsigned int iInLen = 0;
 46     unsigned int iOutLen = 0;
 47     int iRet;
 48 
 49     iInLen = strlen(pcFrom)+1;
 50     psInBuf = (char *)malloc(iInLen);
 51     if ( NULL == psInBuf )
 52     {
 53         return 0;
 54     }
 55     memset(psInBuf, 0x0, iInLen);
 56     memcpy(psInBuf, pcFrom, iInLen);
 57     
 58     iOutLen = iMaxToLen;
 59     psOutBuf = (char *)malloc(iOutLen);
 60     if ( NULL == psOutBuf )
 61     {
 62         free(psInBuf);
 63         psInBuf = NULL;
 64         return 0;
 65     }
 66     memset(psOutBuf, 0x0, iOutLen);
 67     
 68     iRet = ChangeCode( "utf-8", "gb2312",  psInBuf, &iInLen, psOutBuf, &iOutLen );
 69     //iRet = u2g(psInBuf, iInLen, psOutBuf, iOutLen);
 70     if ( 0 != iRet )
 71     {
 72         printf("ChangeCode: Error\n");
 73         //return 0;
 74     }
 75     memcpy(pcTo, psOutBuf, iOutLen);
 76     printf("%s: iOutLen = %d\n", __FUNCTION__, iOutLen);
 77 
 78     free(psInBuf);
 79     psInBuf = NULL;
 80     free(psOutBuf);
 81     psOutBuf = NULL;
 82     
 83     return iOutLen;
 84     
 85 }
 86 
 87 static int MAIN_GB2312ToUTF(char  * pcFrom, char * pcTo, int iMaxToLen)
 88 {
 89     char * psInBuf = NULL;
 90     char * psOutBuf = NULL;
 91     unsigned int iInLen = 0;
 92     unsigned int iOutLen = 0;
 93     int iRet;
 94 
 95     iInLen = strlen(pcFrom)+1;
 96     psInBuf = (char *)malloc(iInLen);
 97     if ( NULL == psInBuf )
 98     {
 99         return 0;
100     }
101     memset(psInBuf, 0x0, iInLen);
102     memcpy(psInBuf, pcFrom, iInLen);
103     
104     iOutLen = iMaxToLen;
105     psOutBuf = (char *)malloc(iOutLen);
106     if ( NULL == psOutBuf )
107     {
108         free(psInBuf);
109         psInBuf = NULL;
110         return 0;
111     }
112     memset(psOutBuf, 0x0, iOutLen);
113     
114     iRet = ChangeCode( "gb2312", "utf-8",  psInBuf, &iInLen, psOutBuf, &iOutLen );
115     //iRet = u2g(psInBuf, iInLen, psOutBuf, iOutLen);
116     if ( 0 != iRet )
117     {
118         printf("ChangeCode: Error\n");
119         //return 0;
120     }
121     memcpy(pcTo, psOutBuf, iOutLen);
122     printf("%s: iOutLen = %d\n", __FUNCTION__, iOutLen);
123 
124     free(psInBuf);
125     psInBuf = NULL;
126     free(psOutBuf);
127     psOutBuf = NULL;
128     
129     return iOutLen;
130     
131 }
132 
133 int main()
134 {
135     char strUTF[]={
136                      0xE5, 0xBC, 0x80, 0xE8,0xBD, 0xA6, 0xE4, 0xBA, 0x8B, 0xE4, 0xBB, 0xB6, 0xE5, 0xBC, 0x80, 0xE8,0xBD, 0xA6, 0xE4, 0xBA, 0x8B, 0xE4, 0xBB, 0xB6, 
137                      0xE5, 0xBC, 0x80, 0xE8,0xBD, 0xA6, 0xE4, 0xBA, 0x8B, 0xE4, 0xBB, 0xB6, 0xE5, 0xBC, 0x80, 0xE8,0xBD, 0xA6, 0xE4, 0xBA, 0x8B, 0xE4, 0xBB, 0xB6,
138                      0xE5, 0xBC, 0x80, 0xE8,0xBD, 0xA6, 0xE4, 0xBA, 0x8B, 0xE4, 0xBB, 0xB6, 0xE5, 0xBC, 0x80, 0xE8,0xBD, 0xA6, 0xE4, 0xBA, 0x8B, 0xE4, 0xBB, 0xB6,
139                      0xE5, 0xBC, 0x80, 0xE8,0xBD, 0xA6, 0xE4, 0xBA, 0x8B, 0xE4, 0xBB, 0xB6, 0xE5, 0xBC, 0x80, 0xE8,0xBD, 0xA6, 0xE4, 0xBA, 0x8B, 0xE4, 0xBB, 0xB6, 
140                      0xE5, 0xBC, 0x80, 0xE8,0xBD, 0xA6, 0xE4, 0xBA, 0x8B, 0xE4, 0xBB, 0xB6, 0xE5, 0xBC, 0x80, 0xE8,0xBD, 0xA6, 0xE4, 0xBA, 0x8B, 0xE4, 0xBB, 0xB6,
141                      0xE5, 0xBC, 0x80, 0xE8,0xBD, 0xA6, 0xE4, 0xBA, 0x8B, 0xE4, 0xBB, 0xB6, 0xE5, 0xBC, 0x80, 0xE8,0xBD, 0xA6, 0xE4, 0xBA, 0x8B, 0xE4, 0xBB, 0xB6,
142                      0x00, 0x00, 0x00
143                   };
144     char chTmpStr[256];
145     int len = 0;
146     
147     memset(chTmpStr, 0x0, 256);
148     MAIN_UTF2Gb2312(strUTF, chTmpStr, 256);
149     printf("Main: change=%s\n", chTmpStr);
150     
151     return 0;
152 }


 

posted @ 2016-01-07 11:12  forehui  阅读(3660)  评论(0)  编辑  收藏  举报