#ifndef TRANSFORM #define TRANSFORM #include using namespace std; // 是否启用map转换，建议启用 // 使用map转换的话，同一个常量字符串不会做两次转换 #define TEST_TYPE_MAP typedef map strmap; class CUtf8String { public: inline CUtf8String(const char* gb2312) { m_bIsConst = true; #ifdef TEST_TYPE_MAP if (m[gb2312]) { m_utf8 = m[gb2312]; return ; } #endif int buffLen = 0; WCHAR wbuff[5120]; MultiByteToWideChar(CP_ACP, 0, gb2312, -1, wbuff, 5120); buffLen = WideCharToMultiByte(CP_UTF8, 0, wbuff, -1, NULL, 0, 0, 0); m_utf8 = new char[buffLen+1]; WideCharToMultiByte(CP_UTF8, 0, wbuff, -1, (LPSTR)m_utf8, buffLen, 0, 0); #ifdef TEST_TYPE_MAP m[gb2312] = m_utf8; #endif } inline CUtf8String(char* gb2312) { m_bIsConst = false; int buffLen = 0; WCHAR wbuff[5120]; MultiByteToWideChar(CP_ACP, 0, gb2312, -1, wbuff, 5120); buffLen = WideCharToMultiByte(CP_UTF8, 0, wbuff, -1, NULL, 0, 0, 0); m_utf8 = new char[buffLen+1]; WideCharToMultiByte(CP_UTF8, 0, wbuff, -1, (LPSTR)m_utf8, buffLen, 0, 0); } inline ~CUtf8String() { #ifndef TEST_TYPE_MAP if (m_utf8) { delete m_utf8; m_utf8 = 0; } #else if (!m_bIsConst) { if (m_utf8) { delete m_utf8; m_utf8 = 0; } } #endif } inline operator char*() { return (char*)m_utf8; } private: const char* m_utf8; bool m_bIsConst; #ifdef TEST_TYPE_MAP static strmap m; #endif }; class CGb2312String { public: inline CGb2312String(const char* utf8) { #ifdef TEST_TYPE_MAP if (m[utf8]) { m_gb2312 = 0; m_gb2312 = m[utf8]; } #endif int buffLen = 0; WCHAR wbuff[5120]; MultiByteToWideChar(CP_UTF8, 0, utf8, -1, wbuff, 5120); buffLen = WideCharToMultiByte(CP_ACP, 0, wbuff, -1, NULL, 0, 0, 0); m_gb2312 = new char[buffLen+1]; WideCharToMultiByte(CP_ACP, 0, wbuff, -1, (LPSTR)m_gb2312, buffLen, 0, 0); #ifdef TEST_TYPE_MAP m[utf8] = m_gb2312; #endif } inline CGb2312String(char* utf8) { #ifdef TEST_TYPE_MAP if (m[utf8]) { m_gb2312 = 0; m_gb2312 = m[utf8]; } #endif int buffLen = 0; WCHAR wbuff[5120]; MultiByteToWideChar(CP_UTF8, 0, utf8, -1, wbuff, 5120); buffLen = WideCharToMultiByte(CP_ACP, 0, wbuff, -1, NULL, 0, 0, 0); m_gb2312 = new char[buffLen+1]; WideCharToMultiByte(CP_ACP, 0, wbuff, -1, (LPSTR)m_gb2312, buffLen, 0, 0); #ifdef TEST_TYPE_MAP m[utf8] = m_gb2312; #endif } inline ~CGb2312String() { #ifndef TEST_TYPE_MAP if (m_gb2312) { delete m_gb2312; m_gb2312 = 0; } #endif } inline operator char*() { return (char*)m_gb2312; } private: const char* m_gb2312; #ifdef TEST_TYPE_MAP static strmap m; #endif }; #ifdef TEST_TYPE_MAP strmap CUtf8String::m; strmap CGb2312String::m; #endif #endif //===================无聊的分割线========================== #define U (CUtf8String) #define W (CGb2312String) // 使用方法 int main(int argc, char* argv[]) { // 打印出乱码即为UTF8的编码，方便吧。C++还是确实很强悍的 printf("%s", U"你好中国!"); }
