144 lines
2 KiB
C++
144 lines
2 KiB
C++
/*++
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Copyright (C) 1996-2001 Microsoft Corporation
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Module Name:
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TSTRING.CPP
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Abstract:
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History:
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--*/
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#include "precomp.h"
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TString::TString()
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{
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m_empty = 0;
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m_pString = &m_empty;
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m_Size = 0;
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}
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TString::TString(const TCHAR *pSrc)
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{
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m_empty = 0;
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m_pString = &m_empty;
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m_Size = 0;
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assign(pSrc);
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}
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void TString::assign(const TCHAR * pSrc)
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{
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if(pSrc)
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{
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int iLen = lstrlen(pSrc)+1;
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TCHAR * pNew = new TCHAR[iLen];
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if(pNew)
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{
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m_pString = pNew;
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m_Size = iLen;
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lstrcpy(m_pString, pSrc);
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}
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}
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}
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#ifndef UNICODE
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TString& TString::operator =(WCHAR * pwcSrc)
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{
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Empty();
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long len = 2*(wcslen(pwcSrc)+1);
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TCHAR * pNew = new TCHAR[len];
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if(pNew)
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{
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wcstombs(pNew, pwcSrc, len);
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assign(pNew);
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delete pNew;
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}
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return *this;
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}
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#endif
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TString& TString::operator =(LPTSTR pSrc)
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{
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Empty();
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assign(pSrc);
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return *this;
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}
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TString& TString::operator =(const TString &Src)
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{
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Empty();
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assign(Src.m_pString);
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return *this;
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}
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//TString::operator=(class TString const &)
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void TString::Empty()
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{
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m_Size = 0;
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if(m_pString != &m_empty)
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delete m_pString;
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m_pString = &m_empty;
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}
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TString& TString::operator +=(TCHAR * pSrc)
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{
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if(pSrc)
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{
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int iLen = lstrlen(m_pString) + lstrlen(pSrc)+1;
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TCHAR * pNew = new TCHAR[iLen];
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if(pNew)
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{
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lstrcpy(pNew, m_pString);
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lstrcat(pNew, pSrc);
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Empty();
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m_Size = iLen;
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m_pString = pNew;
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}
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}
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return *this;
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}
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TString& TString::operator +=(TCHAR Src)
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{
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if(lstrlen(m_pString) + 2 > m_Size)
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{
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int iLen = lstrlen(m_pString) + 32;
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TCHAR * pNew = new TCHAR[iLen];
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if(pNew == NULL)
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return *this;
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lstrcpy(pNew, m_pString);
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Empty();
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m_pString = pNew;
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m_Size = iLen;
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}
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TCHAR temp[2];
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temp[0] = Src;
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temp[1] = 0;
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lstrcat(m_pString, temp);
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return *this;
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}
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TCHAR TString::GetAt(int iIndex)
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{
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if(iIndex < 0 || iIndex >= lstrlen(m_pString))
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return -1;
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else
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return m_pString[iIndex];
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}
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int TString::Find(TCHAR cFind)
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{
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int iCnt, iLen = lstrlen(m_pString);
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for(iCnt = 0 ;iCnt < iLen; iCnt++)
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if(cFind == m_pString[iCnt])
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return iCnt;
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return -1;
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}
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