增强CString类（字符数值自由转换）

来源：互联网发布：mac粉编辑：程序博客网时间：2024/06/04 22:47
// 通用库// String.hnamespace Common{class CString : public string{public:CString();virtual ~CString();// 模版化构造函数template <typename T>CString(const T& tVal){ostringstream oss;oss << tVal;assign(oss.str());}// 模版化类型转换（注意char*不可用）template <typename T>operator T(){T tVal;istringstream iss(this->c_str());iss >> tVal;return tVal;}// 重载+运算符template <typename T>CString operator +(const T& tVal){return CString((this->c_str() + CString(tVal)));}// 重载=运算符template <typename T>CString& operator =(const T& tVal){this->assign(CString(tVal));return *this;}// 重载+=运算符template <typename T>CString& operator +=(const T& tVal){this->append(CString(tVal));return *this;}// 重载<<运算符template <typename T>CString& operator <<(const T& tVal){this->append(CString(tVal));return *this;}// 重载<<运算符template <typename T>CString& operator >>(T& tVal){istringstream iss(this->c_str());iss >> tVal;return *this;}// 格式化字符串CString& Format(const char* pFormat, ...);// 转换为大写CString& Toupper();// 转换为小写CString& Tolower();};// 转换为char*类型template<> CString::operator char*();// 转换为const char*类型template<> CString::operator const char*();}// String.cppnamespace Common{CString::CString(){//ctor}CString::~CString(){//dtor}// 转换为char*类型template <>CString::operator char*(){return (char*)this->c_str();}// 转换为const char*类型template <>CString::operator const char*(){return this->c_str();}// 格式化字符串CString& CString::Format(const char* pFormat, ...){char* pBuff = NULL;va_list params;pBuff = new char[MAX_FORMAT_SIZE];memset(pBuff, 0, MAX_FORMAT_SIZE);va_start(params, pFormat);vsnprintf(pBuff, MAX_FORMAT_SIZE, pFormat, params);va_end(params);this->assign(pBuff);delete[] pBuff;return *this;}// 转换为大写CString& CString::Toupper(){transform(this->begin(), this->end(), this->begin(), ::toupper);return *this;}// 转换为小写CString& CString::Tolower(){transform(this->begin(), this->end(), this->begin(), ::tolower);return *this;}}
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