一个小型字符串工具类MString

自己实现了一个字符串工具类，不怎么完善，凑合这用，

里面的韩硕或者变量都还比较简单，很容易理解

#ifndef MSTRING_H#define MSTRING_H/*********************************************************************  @note     : 请在此处包含系统头文件********************************************************************//*********************************************************************  @note     : 请在此处包含自定义头文件********************************************************************/#include <iostream>#include <string>#include <sstream>#include <stdlib.h>using namespace std;//字符串长度#ifndef SZ_LENGTH#define SZ_LENGTH 128#endif#ifndef SZ_S_LENGTH#define SZ_S_LENGTH 64#endif#ifndef SZ_L_LENGTH#define SZ_L_LENGTH 512#endif#ifndef SZ_8_LENGTH#define SZ_8_LENGTH 8#endif#ifndef SZ_16_LENGTH#define SZ_16_LENGTH 16#endif#ifndef SZ_32_LENGTH#define SZ_32_LENGTH 32#endif#ifndef SZ_1024_LENGTH#define SZ_1024_LENGTH 1024#endif#ifndef SZ_2048_LENGTH#define SZ_2048_LENGTH 2048#endif#ifndef SZ_4096_LENGTH#define SZ_4096_LENGTH 4096#endifclass MString;ostream &operator<<(ostream &,const MString& mstr);istream &operator>>(istream &,MString& mstr);class MString{public://========================================================//构造函数//========================================================MString(){m_pszData = NULL;Init();}~MString(){m_iPos = 0;m_iLength = 0;if (m_pszData != NULL){delete[] m_pszData;m_pszData = NULL;}}MString(char chData){m_iLength = 0;SetData(chData);}MString::MString(const MString& mstrData){m_pszData = NULL;m_iLength = 0;SetData(mstrData);}MString(__int64 iData){m_pszData = NULL;m_iLength = 0;SetData(iData);}MString(long lData){m_pszData = NULL;m_iLength = 0;SetData(lData);}MString(const string& strData){m_pszData = NULL;m_iLength = 0;SetData(strData);}MString(const char* pszData){m_pszData = NULL;m_iLength = 0;SetData(pszData);}MString(int iData){m_pszData = NULL;m_iLength = 0;SetData(iData);}MString(double dData){m_pszData = NULL;m_iLength = 0;SetData(dData);}MString(unsigned uData){m_pszData = NULL;m_iLength = 0;SetData(uData);}MString(float fData){m_pszData = NULL;m_iLength = 0;SetData(fData);}MString(unsigned long ulData){m_pszData = NULL;m_iLength = 0;SetData(ulData);}MString(short nData){m_pszData = NULL;m_iLength = 0;SetData(nData);}MString(unsigned short nData){m_pszData = NULL;m_iLength = 0;SetData(nData);}//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////void SetData(char chData){/*Init();m_szData[0] = chData;m_iLength = 1;*/Init();Alloc(1);m_pszData[0] = chData;m_iLength = 1;}void SetData(const MString& mstrData){//之所以用>=m_iLength而不是=m_iLength的原因是有SetData("")的情况存在，而strlen("")==0，如果此时m_pszData==NULL的话//memset(m_pszData,0,m_iLength+1);就会失败if (mstrData.GetLength()>=m_iLength){Init();m_iLength = mstrData.GetLength();Alloc(m_iLength);}else{memset(m_pszData,0,m_iLength+1);m_iLength = mstrData.GetLength();}/*Init();m_iLength = mstrData.GetLength();Alloc(m_iLength);*/strcpy(m_pszData,mstrData.GetData());}void SetData(__int64 iData){//之所以用>=m_iLength而不是=m_iLength的原因是有SetData("")的情况存在，而strlen("")==0，如果此时m_pszData==NULL的话//memset(m_pszData,0,m_iLength+1);就会失败Init();char szTemp[32];memset(szTemp,0,32);//ltoa(iData,szTemp,10);sprintf(szTemp,"%lld",iData);if (strlen(szTemp)>=m_iLength){m_iLength = strlen(szTemp);Alloc(m_iLength);}else{memset(m_pszData,0,m_iLength+1);m_iLength = strlen(szTemp);}/*m_iLength = strlen(szTemp);Alloc(m_iLength);*/memcpy(m_pszData,szTemp,m_iLength);}void SetData(long lData){//之所以用>=m_iLength而不是=m_iLength的原因是有SetData("")的情况存在，而strlen("")==0，如果此时m_pszData==NULL的话//memset(m_pszData,0,m_iLength+1);就会失败char szTemp[32];memset(szTemp,0,32);//ltoa(lData,szTemp,10);sprintf(szTemp,"%ld",lData);if (strlen(szTemp)>=m_iLength){Init();m_iLength = strlen(szTemp);Alloc(m_iLength);}else{memset(m_pszData,0,m_iLength+1);m_iLength = strlen(szTemp);}/*m_iLength = strlen(szTemp);Alloc(m_iLength);*/memcpy(m_pszData,szTemp,m_iLength);}void SetData(const string& strData){//之所以用>=m_iLength而不是=m_iLength的原因是有SetData("")的情况存在，而strlen("")==0，如果此时m_pszData==NULL的话//memset(m_pszData,0,m_iLength+1);就会失败if (strData.size()>=m_iLength){Init();m_iLength = strData.size();Alloc(m_iLength);}else{memset(m_pszData,0,m_iLength+1);m_iLength = strData.size();}/*Init();m_iLength = strData.size();Alloc(m_iLength);*/strcpy(m_pszData,strData.c_str());}void SetData(const char* pszData){//之所以用>=m_iLength而不是=m_iLength的原因是有SetData("")的情况存在，而strlen("")==0，如果此时m_pszData==NULL的话//memset(m_pszData,0,m_iLength+1);就会失败if (strlen(pszData)>=m_iLength){Init();m_iLength = strlen(pszData);Alloc(m_iLength);}else{memset(m_pszData,0,m_iLength+1);m_iLength = strlen(pszData);}/*Init();m_iLength = strlen(pszData);Alloc(m_iLength);*/strcpy(m_pszData,pszData);}void SetData(int iData){//之所以用>=m_iLength而不是=m_iLength的原因是有SetData("")的情况存在，而strlen("")==0，如果此时m_pszData==NULL的话//memset(m_pszData,0,m_iLength+1);就会失败char szTemp[32];memset(szTemp,0,32);//itoa(iData,szTemp,10);sprintf(szTemp,"%d",iData);if (strlen(szTemp)>=m_iLength){Init();m_iLength = strlen(szTemp);Alloc(m_iLength);}else{memset(m_pszData,0,m_iLength+1);m_iLength = strlen(szTemp);}/*m_iLength = strlen(szTemp);Alloc(m_iLength);*/memcpy(m_pszData,szTemp,m_iLength);}void SetData(double dData){//之所以用>=m_iLength而不是=m_iLength的原因是有SetData("")的情况存在，而strlen("")==0，如果此时m_pszData==NULL的话//memset(m_pszData,0,m_iLength+1);就会失败stringstream str;str<<dData;if (str.str().size()>=m_iLength){Init();m_iLength = str.str().size();Alloc(m_iLength);}else{memset(m_pszData,0,m_iLength+1);m_iLength = str.str().size();}//m_iLength = str.str().size();//Alloc(m_iLength);memcpy(m_pszData,str.str().c_str(),m_iLength);}void SetData(unsigned uData){//之所以用>=m_iLength而不是=m_iLength的原因是有SetData("")的情况存在，而strlen("")==0，如果此时m_pszData==NULL的话//memset(m_pszData,0,m_iLength+1);就会失败stringstream str;str<<uData;if (str.str().size()>=m_iLength){Init();m_iLength = str.str().size();Alloc(m_iLength);}else{memset(m_pszData,0,m_iLength+1);m_iLength = str.str().size();}/*m_iLength = str.str().size();Alloc(m_iLength);*/memcpy(m_pszData,str.str().c_str(),m_iLength);}void SetData(float fData){//之所以用>=m_iLength而不是=m_iLength的原因是有SetData("")的情况存在，而strlen("")==0，如果此时m_pszData==NULL的话//memset(m_pszData,0,m_iLength+1);就会失败stringstream str;str<<fData;if (str.str().size()>=m_iLength){Init();m_iLength = str.str().size();Alloc(m_iLength);}else{memset(m_pszData,0,m_iLength+1);m_iLength = str.str().size();}/*m_iLength = str.str().size();Alloc(m_iLength);*/memcpy(m_pszData,str.str().c_str(),m_iLength);}void SetData(unsigned long ulData){//之所以用>=m_iLength而不是=m_iLength的原因是有SetData("")的情况存在，而strlen("")==0，如果此时m_pszData==NULL的话//memset(m_pszData,0,m_iLength+1);就会失败stringstream str;str<<ulData;if (str.str().size()>=m_iLength){Init();m_iLength = str.str().size();Alloc(m_iLength);}else{memset(m_pszData,0,m_iLength+1);m_iLength = str.str().size();}/*m_iLength = str.str().size();Alloc(m_iLength);*/memcpy(m_pszData,str.str().c_str(),m_iLength);}void SetData(short nData){//之所以用>=m_iLength而不是=m_iLength的原因是有SetData("")的情况存在，而strlen("")==0，如果此时m_pszData==NULL的话//memset(m_pszData,0,m_iLength+1);就会失败stringstream str;str<<nData;if (str.str().size()>=m_iLength){Init();m_iLength = str.str().size();Alloc(m_iLength);}else{memset(m_pszData,0,m_iLength+1);m_iLength = str.str().size();}/*m_iLength = str.str().size();Alloc(m_iLength);*/memcpy(m_pszData,str.str().c_str(),m_iLength);}void SetData(unsigned short nData){//之所以用>=m_iLength而不是=m_iLength的原因是有SetData("")的情况存在，而strlen("")==0，如果此时m_pszData==NULL的话//memset(m_pszData,0,m_iLength+1);就会失败stringstream str;str<<nData;if (str.str().size()>=m_iLength){Init();m_iLength = str.str().size();Alloc(m_iLength);}else{memset(m_pszData,0,m_iLength+1);m_iLength = str.str().size();}/*m_iLength = str.str().size();Alloc(m_iLength);*/memcpy(m_pszData,str.str().c_str(),m_iLength);}//========================================================//运算符重载//========================================================MString& operator=(const char* pszData){SetData(pszData);return *this;}MString& operator=(const string& strData){SetData(strData);return *this;}MString& operator=(long lData){SetData(lData);return *this;}MString& operator=(__int64 iData){SetData(iData);return *this;}MString& operator=(const MString& m_strData){SetData(m_strData);return *this;}MString& operator=(char chData){SetData(chData);return *this;}MString& operator=(int iData){SetData(iData);return *this;}MString& operator=(double dData){SetData(dData);return *this;}MString& operator=(unsigned uData){SetData(uData);return *this;}MString& operator=(float fData){SetData(fData);return *this;}MString& operator=(unsigned long ulData){SetData(ulData);return *this;}MString& operator=(short nData){SetData(nData);return *this;}MString& operator=(unsigned short nData){SetData(nData);return *this;}MString& operator+=(const char* pszData){MString mstr = pszData;*this += mstr;return *this;}MString& operator+=(const string& strData){MString mstr = strData;*this += mstr;return *this;}MString& operator+=(long lData){MString mstr = lData;*this += mstr;return *this;}MString& operator+=(__int64 iData){MString mstr = iData;*this += mstr;return *this;}MString& operator+=(const MString& m_strData){/*strcat(m_szData,m_strData.c_str());m_iLength += m_strData.GetLength();return *this;*///保存原来数据char* pszTemp = new char[m_iLength + 1];memset(pszTemp,0,m_iLength + 1);memcpy(pszTemp,m_pszData,m_iLength);//分配新内存m_iLength += m_strData.GetLength();Alloc(m_iLength);//恢复原来数据strcpy(m_pszData,pszTemp);//连接新的数据strcat(m_pszData,m_strData.c_str());//删除临时缓冲区delete[] pszTemp;return *this;}MString& operator+=(char chData){MString mstr = chData;*this += mstr;return *this;}MString& operator+=(int iData){MString mstr = iData;*this += mstr;return *this;}MString& operator+=(double dData){MString mstr = dData;*this += mstr;return *this;}MString& operator+=(unsigned uData){MString mstr = uData;*this += mstr;return *this;}MString& operator+=(float fData){MString mstr = fData;*this += mstr;return *this;}MString& operator+=(unsigned long ulData){MString mstr = ulData;*this += mstr;return *this;}MString& operator+=(short nData){MString mstr = nData;*this += mstr;return *this;}MString& operator+=(unsigned short nData){MString mstr = nData;*this += mstr;return *this;}MString operator+(const char* pszData){MString mstr = *this;mstr += pszData;return mstr;}MString operator+(const string& strData){MString mstr = *this;mstr += strData;return mstr;}MString operator+(long lData){MString mstr = *this;mstr += lData;return mstr;}MString operator+(__int64 iData){MString mstr = *this;mstr += iData;return mstr;}MString operator+(const MString& m_strData){MString mstr = *this;mstr += m_strData;return mstr;}MString operator+(char chData){MString mstr = *this;mstr += chData;return mstr;}MString operator+(int iData){MString mstr = *this;mstr += iData;return mstr;}MString operator+(double dData){MString mstr = *this;mstr += dData;return mstr;}MString operator+(unsigned uData){MString mstr = *this;mstr += uData;return mstr;}MString operator+(float fData){MString mstr = *this;mstr += fData;return mstr;}MString operator+(unsigned long ulData){MString mstr = *this;mstr += ulData;return mstr;}MString operator+(short nData){MString mstr = *this;mstr += nData;return mstr;}MString operator+(unsigned short nData){MString mstr = *this;mstr += nData;return mstr;}////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////unsigned int GetLength() const{if (m_pszData == NULL){return 0;}return m_iLength;}const char* GetData() const{//return m_szData;if (m_pszData != 0){m_pszData[m_iLength] = 0;}return m_pszData;}const char* c_str() const{//return m_szData;m_pszData[m_iLength] = 0;return m_pszData;}const char* ToString() const{//return m_szData;m_pszData[m_iLength] = 0;return m_pszData;}int Find(char chData){unsigned int iIndex  = 0;for (iIndex = 0; iIndex <m_iLength ; ++iIndex){//if (chData == m_szData[iIndex])if (chData == m_pszData[iIndex]){return iIndex;}}if (m_iLength == iIndex ){return -1;}}int RFind(char chData){int iIndex  = 0;for (iIndex = m_iLength -1; iIndex >= 0 ; --iIndex){//if (chData == m_szData[iIndex])if (chData == m_pszData[iIndex]){return iIndex;}}if (m_iLength == iIndex ){return -1;}}int Find(const char* pszData,unsigned int iStart){//string str = m_szData;string str = m_pszData;string str2 = pszData;return str.find(str2,iStart);}int Find(const MString& mstrData,unsigned int iStart){//string str = m_szData;string str = m_pszData;string str2 = mstrData.c_str();return str.find(str2,iStart);}bool Empty(){if (0 == m_iLength){return true;}return false;}char& operator[](unsigned int uIndex){//return m_szData[uIndex];return GetChar(uIndex);}char& operator[](int uIndex){//return m_szData[uIndex];return GetChar(uIndex);}char& GetChar(unsigned nIndex){return m_pszData[nIndex];}void Replace(const char* pszSrc,const char* pszDest){}MString SplitString(MString& strCmdString,const char chToken){int nIndex = 0;nIndex = strCmdString.Find(chToken);MString strTemp ;if (nIndex == -1){strTemp = strCmdString;strCmdString = "";}else{strTemp = strCmdString.Left(nIndex);strCmdString = strCmdString.Rigth(nIndex);}return strTemp;}operator const char *() const{//return m_szData;return m_pszData;}operator char *(){//return m_szData;return m_pszData;}//========================================================//去空格操作//========================================================void Trim(){TrimRigth();TrimLeft();}void TrimLeft(){MString mstr;unsigned int iIndex = 0;for (iIndex = 0; iIndex < m_iLength ; ++iIndex){//if (' ' != m_szData[iIndex])if (' ' != m_pszData[iIndex] && '\t' != m_pszData[iIndex]){break;}--m_iLength;}//mstr = &m_szData[iIndex];mstr = &m_pszData[iIndex];*this = mstr ;}void TrimRigth(){MString mstr;int iIndex = 0;for (iIndex = m_iLength-1; iIndex >= 0 ; --iIndex){//if (' ' != m_szData[iIndex])if (' ' != m_pszData[iIndex] && '\t' != m_pszData[iIndex] && '\r' != m_pszData[iIndex] && '\n' != m_pszData[iIndex]){break;}else{--m_iLength;m_pszData[iIndex] = 0;}}//m_szData[iIndex+1] = 0;//m_pszData[iIndex+1] = 0;}const char*  GainClassName() const{return "MString";}/*void Load(MAchive& ar){int m_iLength = ar.Load_int();Alloc(m_iLength);ar.Load_pointer(m_pszData);}void Save(MAchive& ar){ar.Save_int(m_iLength);ar.Save_pointer(m_pszData,m_iLength);}*/friend ostream& operator<<(ostream &out,const MString & mstr){out<<(const char*)mstr;return out;}friend istream&operator>>(istream &in,MString &mstr){in>>(char*)mstr;return in;}//========================================================//取子字符串类操作//========================================================MString substr(unsigned int uStart,unsigned int uLength){MString mstr;string temp =m_pszData;mstr = temp.substr(uStart,uLength);//for (int iIndex = uStart ;iIndex<uStart+uLength;++iIndex)//{////mstr += m_szData[iIndex];//mstr += m_pszData[iIndex];//}return mstr;}MString Left(unsigned nIndex){if (nIndex == 0 || nIndex >= GetLength()){return "";}return substr(0,nIndex);}MString Rigth(unsigned nIndex){if (nIndex == GetLength() - 1 || nIndex < 0){return "";}return substr(nIndex+1,GetLength()-nIndex-1);}//========================================================//比较类操作//========================================================bool Equal(const string& src){if (0== strcmp(GetData(),src.c_str())){return true;}return false;}bool Equal(const char* src){if (0== strcmp(GetData(),src)){return true;}return false;}bool Equal(char* src){if (0== strcmp(GetData(),src)){return true;}return false;}bool Equal(const MString& src){if (0== strcmp(GetData(),src.c_str())){return true;}return false;}bool operator==(const string& src){if (0== strcmp(GetData(),src.c_str())){return true;}return false;}bool operator==(const char* src){if (0== strcmp(GetData(),src)){return true;}return false;}bool operator==(char* src){if (0== strcmp(GetData(),src)){return true;}return false;}bool operator==(const MString& src){if (0== strcmp(GetData(),src.c_str())){return true;}return false;}int GetObjSize(){return (sizeof(*this));}const char* GainClassName(){return "MString";}private:void Alloc(int iLength){if (m_pszData != NULL){delete[] m_pszData;m_pszData = NULL;}m_pszData = new char[iLength +1];memset(m_pszData,0,iLength +1);}void Init(){/*memset(m_szData,0,SZ_L_LENGTH);m_iLength = 0;m_iPos = 0;*///说明：删除下面这行的原因是，在MString有值的情况下SetData的话会造成内存泄露//m_pszData = new char[0];if (m_pszData != NULL){delete[] m_pszData;m_pszData = new char[1];strcpy(m_pszData,"");}m_iLength = 0;m_iPos = 0;}char* m_pszData;unsigned int m_iLength;unsigned int m_iPos;};#endif // MSTRING_H