ANSI - Unicode - UTF8 转换

朴灿烈づ我的快乐病毒、 2023-10-18 08:18 52阅读 0赞

\#include <stdio.h>  
\#include <windows.h>  
\#include <locale.h>  
\#define BUFF\_SIZE 1024  
  
**wchar\_t** \* ANSIToUnicode( **const** **char**\* str )  
\{  
**int** textlen ;  
**wchar\_t** \* result;  
textlen = MultiByteToWideChar( CP\_ACP, 0, str,- 1, NULL, 0 );  
result = ( **wchar\_t** \*)malloc((textlen+ 1)\* **sizeof**( **wchar\_t**));  
memset(result, 0,(textlen+ 1)\* **sizeof**( **wchar\_t**));  
MultiByteToWideChar(CP\_ACP, 0,str,- 1,(LPWSTR)result,textlen );  
**return** result;  
\}  
  
**char** \* UnicodeToANSI( **const** **wchar\_t**\* str )  
\{  
**char**\* result;  
**int** textlen;  
textlen = WideCharToMultiByte( CP\_ACP, 0, str, - 1, NULL, 0, NULL, NULL );  
result =( **char** \*)malloc((textlen+ 1)\* **sizeof**( **char**));  
memset( result, 0, **sizeof**( **char**) \* ( textlen + 1 ) );  
WideCharToMultiByte( CP\_ACP, 0, str, - 1, result, textlen, NULL, NULL );  
**return** result;  
\}  
  
**wchar\_t** \* UTF8ToUnicode( **const** **char**\* str )  
\{  
**int** textlen ;  
**wchar\_t** \* result;  
textlen = MultiByteToWideChar( CP\_UTF8, 0, str,- 1, NULL, 0 );  
result = ( **wchar\_t** \*)malloc((textlen+ 1)\* **sizeof**( **wchar\_t**));  
memset(result, 0,(textlen+ 1)\* **sizeof**( **wchar\_t**));  
MultiByteToWideChar(CP\_UTF8, 0,str,- 1,(LPWSTR)result,textlen );  
**return** result;  
\}  
  
**char** \* UnicodeToUTF8( **const** **wchar\_t**\* str )  
\{  
**char**\* result;  
**int** textlen;  
textlen = WideCharToMultiByte( CP\_UTF8, 0, str, - 1, NULL, 0, NULL, NULL );  
result =( **char** \*)malloc((textlen+ 1)\* **sizeof**( **char**));  
memset(result, 0, **sizeof**( **char**) \* ( textlen + 1 ) );  
WideCharToMultiByte( CP\_UTF8, 0, str, - 1, result, textlen, NULL, NULL );  
**return** result;  
\}  
*/\*宽字符转换为多字符Unicode - ANSI\*/*  
**char**\* w2m( **const** **wchar\_t**\* wcs)  
\{  
**int** len;  
**char**\* buf;  
len =wcstombs(NULL,wcs, 0);  
**if** (len == 0)  
**return** NULL;  
buf = ( **char** \*)malloc( **sizeof**( **char**)\*(len+ 1));  
memset(buf, 0, **sizeof**( **char**) \*(len+ 1));  
len =wcstombs(buf,wcs,len+ 1);  
**return** buf;  
\}  
*/\*多字符转换为宽字符ANSI - Unicode\*/*  
**wchar\_t**\* m2w( **const** **char**\* mbs)  
\{  
**int** len;  
**wchar\_t**\* buf;  
len =mbstowcs(NULL,mbs, 0);  
**if** (len == 0)  
**return** NULL;  
buf = ( **wchar\_t** \*)malloc( **sizeof**( **wchar\_t**)\*(len+ 1));  
memset(buf, 0, **sizeof**( **wchar\_t**) \*(len+ 1));  
len =mbstowcs(buf,mbs,len+ 1);  
**return** buf;  
\}  
  
**char**\* ANSIToUTF8( **const** **char**\* str)  
\{  
**return** UnicodeToUTF8(ANSIToUnicode(str));  
\}  
  
**char**\* UTF8ToANSI( **const** **char**\* str)  
\{  
**return** UnicodeToANSI(UTF8ToUnicode(str));  
\}  
  
**int** main()  
\{  
*/\*使用wcstombs和mbstowcs之前必须调用setlocale，以便决定内码\*/*  
setlocale(LC\_ALL, ".936");  
*/\*假定有一个Unicode(UTF-16LE)编码的文件，将其打开，重新编码为ANSI，写入aa.txt中，再继续编码回Unicode，写入aw.txt中\*/*  
*/\*如果不存在a.txt文件，则程序出错，没有做错误处理\*/*  
**char**\* filename = "a.txt";  
**char**\* filenamea = "aa.txt";  
**char**\* filenamew = "aw.txt";  
**FILE**\* input=fopen( filename, "rb");  
**FILE**\* inputa=fopen( filenamea, "wb");  
**FILE**\* inputw=fopen( filenamew, "wb");  
**wchar\_t** \* buf ;  
*/\*BOE设置，UTF-16LE的BOE为FEFF，如果不先将其读取出来，wcstombs会调用失败\*/*  
fgetwc(input);  
fputwc( 0xFEFF,inputw);  
*/\*开始读取文件\*/*  
**while**(!feof(input))  
\{  
buf = ( **wchar\_t** \*)malloc( **sizeof**( **wchar\_t**)\*BUFF\_SIZE) ;  
memset(buf, 0, **sizeof**( **wchar\_t**) \* BUFF\_SIZE );  
fgetws(buf, BUFF\_SIZE, input);  
fputs(w2m(buf), inputa);  
fputws(m2w(w2m(buf)), inputw);  
\}  
*/\*后续处理\*/*  
fclose(input);  
fclose(inputa);  
fclose(inputw);  
free(buf);  
  
**return** 0;  
\}