可以处理中英文字符串的CString类

// StringM.cpp: implementation of the CStringM class. // ////////////////////////////////////////////////////////////////////// #include "stdafx.h" //#include "ScriptTest.h" #include "StringM.h" #ifdef _DEBUG #undef THIS_FILE static char THIS_FILE[]=__FILE__; #define new DEBUG_NEW #endif ////////////////////////////////////////////////////////////////////// // Construction/Destruction ////////////////////////////////////////////////////////////////////// CStringM::CStringM() { } CStringM::CStringM(CString& str):CString(str) { } CStringM::~CStringM() { } int CStringM::GetLengthM() { int nLength = this->GetLength(); int nResult = 0; for(int i=0; i<nLength; i++) { // 是中文字符 if(this->GetAt(i) & 0x80) { i += 1; nResult ++; } else { nResult ++; } } return nResult; } CStringM CStringM::MidM(int nFirst) { CStringM strResult; int nStart = 0; int nLength = this->GetLength(); for(int i=0; i<nLength; i++) { if(nStart == nFirst) { nStart = i; break; } if(this->GetAt(i) & 0x80) { i += 1; } nStart ++; } strResult = this->Mid(nStart); return strResult; } CStringM CStringM::MidM(int nFirst, int nCount) { CStringM strResult; int nStart = 0; int nEnd; int nLength = this->GetLength(); for(int i=0; i<nLength; i++) { if(nStart == nFirst) { nStart = i; break; } if(this->GetAt(i) & 0x80) { i += 1; } nStart ++; } nEnd = 1; for(int i = nStart; i<nLength; i++) { if(nEnd == nCount) { if(this->GetAt(i) & 0x80) i += 1; nEnd = i; break; } if(this->GetAt(i) & 0x80) { i += 1; } nEnd ++; } strResult = this->Mid(nStart, nEnd-nStart+1); return strResult; } CStringM CStringM::LeftM(int nCount) { CStringM strResult; strResult = this->MidM(0, nCount); return strResult; } CStringM CStringM::RightM(int nCount) { CStringM strResult; int nAllCount = this->GetLengthM(); strResult = this->MidM(nAllCount - nCount, nCount); return strResult; } int CStringM::FindM(TCHAR ch) const { int nFindIndex = -1; int nIndexM = 0; int nLength = this->GetLength(); for(int i=0; i<nLength; i++) { TCHAR chTemp = this->GetAt(i); if(chTemp == ch) { nFindIndex = nIndexM; break; } if(this->GetAt(i) & 0x80) { i += 1; } nIndexM++; } return nFindIndex; } int CStringM::ReverseFindM(TCHAR ch) const { int nFindIndex = -1; int nLength = this->GetLength(); int nLengthM = ((CStringM*) this)->GetLengthM(); int nIndexM = nLengthM-1; bool bCharHead = false; for(int i=nLength-1; i>=0; i--) { TCHAR chTemp = this->GetAt(i); if(chTemp == ch) { nFindIndex = nIndexM; break; } if(this->GetAt(i) & 0x80) { if(!bCharHead) { i -= 1; bCharHead = true; } else { bCharHead = false; continue; } } nIndexM--; } return nFindIndex; }