#include <windows.h>#include "FileOp.h"/*** @brief 将UTF-8编码格式的字符串转换为ANSI编码格式的字符串* @param[in] strUTF8 输入字符串* @param[out] strAnsi 输出字符串缓冲区* @param[in] iLen strAnsi缓冲区的大小*/int Utf8ToAnsi(const char* strUTF8, char* strAnsi, int iLen){ int len = MultiByteToWideChar(CP_UTF8, 0,strUTF8, -1, NULL, 0); if ( len < 1 ) { return len; } wchar_t *strUnicode = (wchar_t *)malloc(sizeof(wchar_t)*len); if ( NULL == strUnicode ) { return -1; } len = MultiByteToWideChar(CP_UTF8, 0, strUTF8, -1, strUnicode, len); if ( len < 1 ) { free(strUnicode); return len; } len = WideCharToMultiByte(CP_ACP, 0, strUnicode, -1, NULL, 0, NULL, NULL); if ( len < 1 ) { free(strUnicode); return len; } if ( iLen < len ) { return len; } len = WideCharToMultiByte(CP_ACP, 0, strUnicode, -1, strAnsi, iLen, NULL, NULL); free(strUnicode); return len;}/*** @brief 将ANSI编码格式的字符串转换为UTF-8编码格式的字符串* @param[in] strAnsi 输入字符串* @param[out] strUTF8 输出字符串缓冲区* @param[in] iLen strUTF8缓冲区的大小*/int AnsiToUtf8(const char* strAnsi, char* strUTF8, int iLen){ int len = MultiByteToWideChar(CP_ACP, 0,strAnsi, -1, NULL, 0); if ( len < 1 ) { return len; } wchar_t *strUnicode = (wchar_t *)malloc(sizeof(wchar_t)*len); if ( NULL == strUnicode ) { return -1; } len = MultiByteToWideChar(CP_ACP, 0, strAnsi, -1, strUnicode, len); if ( len < 1 ) { free(strUnicode); return len; } len = WideCharToMultiByte(CP_UTF8, 0, strUnicode, -1, NULL, 0, NULL, NULL); if ( len < 1 ) { free(strUnicode); return len; } if ( iLen < len ) { return len; } len = WideCharToMultiByte(CP_UTF8, 0, strUnicode, -1, strUTF8, iLen, NULL, NULL); free(strUnicode); return len;}int main(){ // 备注：需要自行判断并去除 EF BB BF const char* szInFileName = "D:/utf-8.txt"; const char* szOutFileName = "D:/gb2312.txt"; char* pbInData = FILE_OP_ReadAllDataFromFileEx(szInFileName, FLAG_SZ_END_WITH_ZERO); printf("utf8[%d] = [%s]\n", FILE_OP_RetFileSize(szInFileName), pbInData); int len = Utf8ToAnsi(pbInData, NULL, 0); char* pbOutData = new char[len]; len = Utf8ToAnsi(pbInData, pbOutData, len); if ( len > 0 ) { printf("gb2312[%d] = [%s]\n", len,pbOutData); FILE_OP_WriteDataToFile(szOutFileName, (PBYTE)pbOutData, len-1); // 去掉末尾的'\0' } SAFE_FREE(pbOutData); SAFE_FREE(pbInData); return 0;}int main_test_AnsiToUtf8(){ const char* szInFileName = "D:/gb2312.txt"; const char* szOutFileName = "D:/utf-8.txt"; char* pbInData = FILE_OP_ReadAllDataFromFileEx(szInFileName, FLAG_SZ_END_WITH_ZERO); printf("gb2312[%d] = [%s]\n", FILE_OP_RetFileSize(szInFileName), pbInData); int len = AnsiToUtf8(pbInData, NULL, 0); char* pbOutData = new char[len]; len = AnsiToUtf8(pbInData, pbOutData, len); if ( len > 0 ) { printf("utf8[%d] = [%s]\n", len,pbOutData); FILE_OP_WriteDataToFile(szOutFileName, (PBYTE)pbOutData, len-1); } SAFE_FREE(pbOutData); SAFE_FREE(pbInData); return 0;}
