Source code of Windows XP (NT5)
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//
// MODULE: APGTSSTR.H
//
// PURPOSE: header file for DLL Growable string object CString
// (pretty much a la MFC, but avoids all that MFC overhead)
//
// PROJECT: Generic Troubleshooter DLL for Microsoft AnswerPoint
//
// COMPANY: Saltmine Creative, Inc. (206)-284-7511 [email protected]
//
// AUTHOR: Joe Mabel Joe Mabel (reworked code from Microsoft's MFC sources)
//
// ORIGINAL DATE: 8-2-96 Roman Mach; totally re-implemented 1/15/99 Joe Mabel
//
// NOTES:
// 1. As of 1/99, re-implemented based on MFC's implementation. Pared down
// to what we use.
//
// Version Date By Comments
//--------------------------------------------------------------------
// V0.1 - RM Original
// V3.0 7-24-98 JM Abstracted this out as a separate header.
// V3.1 1-15-99 JM Redo based on MFC implementation
//
#ifndef __APGTSSTR_H_
#define __APGTSSTR_H_ 1
#include <windows.h>
#include <tchar.h>
#include "apgtsassert.h"
// determine number of elements in an array (not bytes)
#define _countof(array) (sizeof(array)/sizeof(array[0]))
struct CStringData
{
long nRefs; // reference count
int nDataLength;
int nAllocLength;
// TCHAR data[nAllocLength]
TCHAR* data()
{ return (TCHAR*)(this+1); }
};
class CString {
public:
// Constructors
CString();
CString(LPCTSTR string);
CString(const CString &string);
~CString();
// Attributes & Operations
// as an array of characters
int GetLength() const;
bool IsEmpty() const;
TCHAR GetAt(int nIndex) const; // 0 based
TCHAR operator[](int nIndex) const; // same as GetAt
operator LPCTSTR() const;
// overloaded assignment
const CString& operator=(const CString &string);
const CString& operator=(LPCTSTR string);
const CString& operator=(TCHAR ch);
#ifdef _UNICODE
const CString& operator=(LPCSTR lpsz);
#else // !_UNICODE
const CString& operator=(LPCWSTR lpsz);
#endif // !_UNICODE
// string concatenation
const CString& operator+=(const CString &string);
const CString& operator+=(LPCTSTR string);
CString operator+(const CString& string2);
CString operator+(LPCTSTR lpsz);
// string comparison
int CString::CompareNoCase(LPCTSTR lpsz) const
{ return _tcsicmp(m_pchData, lpsz); } // MBCS/Unicode aware
LPTSTR GetBuffer(int);
void Empty();
LPTSTR GetBufferSetLength(int nNewLength);
void ReleaseBuffer(int nNewLength = -1);
// simple sub-string extraction
CString Mid(int Left, int Count) const;
CString Mid(int Left) const;
CString Left(int amount) const;
CString Right(int amount) const;
// upper/lower/reverse conversion
void MakeLower();
// trimming whitespace (either side)
void TrimRight();
void TrimLeft();
// look for a specific sub-string
int Find(LPCTSTR lpszSub) const;
int Find(LPCTSTR lpszSub, int nStart) const; // Added function - RAB19991112.
int Find(TCHAR c) const;
int ReverseFind(TCHAR ch) const;
enum
{
// Define the code returned when a find is unsuccessful.
FIND_FAILED= -1
} ;
// simple formatting
void Format( LPCTSTR lpszFormat, ... );
// load from resource
BOOL LoadString(UINT nID);
protected:
LPTSTR m_pchData; // pointer to ref counted string data
// implementation helpers
CStringData* GetData() const;
void Init();
void AllocCopy(CString& dest, int nCopyLen, int nCopyIndex, int nExtraLen) const;
void AllocBuffer(int nLen);
void AssignCopy(int nSrcLen, LPCTSTR lpszSrcData);
void ConcatCopy(int nSrc1Len, LPCTSTR lpszSrc1Data, int nSrc2Len, LPCTSTR lpszSrc2Data);
void ConcatInPlace(int nSrcLen, LPCTSTR lpszSrcData);
void FormatV(LPCTSTR lpszFormat, va_list argList);
void CopyBeforeWrite();
void AllocBeforeWrite(int nL65en);
void Release();
static void PASCAL Release(CStringData* pData);
static int PASCAL SafeStrlen(LPCTSTR lpsz);
};
// Compare helpers
bool __stdcall operator ==(const CString& s1, const CString& s2);
bool __stdcall operator ==(const CString& s1, LPCTSTR s2);
bool __stdcall operator ==(LPCTSTR s1, const CString& s2);
bool __stdcall operator !=(const CString& s1, const CString& s2);
bool __stdcall operator !=(const CString& s1, LPCTSTR s2);
bool __stdcall operator !=(LPCTSTR s1, const CString& s2);
bool __stdcall operator < (const CString& s1, const CString& s2);
bool __stdcall operator < (const CString& s1, LPCTSTR s2);
bool __stdcall operator < (LPCTSTR s1, const CString& s2);
CString operator+(LPCTSTR lpsz, const CString& string);
/////////////////////////////////////////////////////////////
// From Afx.inl
// These were all inlines, but some of them don't seem to happily work that way
inline CString::operator LPCTSTR() const
{ return m_pchData; }
inline int PASCAL CString::SafeStrlen(LPCTSTR lpsz)
{ return (lpsz == NULL) ? 0 : lstrlen(lpsz); }
inline TCHAR CString::operator[](int nIndex) const
{
// same as GetAt
ASSERT(nIndex >= 0);
ASSERT(nIndex < GetData()->nDataLength);
return m_pchData[nIndex];
}
inline int CString::GetLength() const
{ return GetData()->nDataLength; }
inline bool CString::IsEmpty() const
{ return GetData()->nDataLength == 0; }
inline TCHAR CString::GetAt(int nIndex) const
{
ASSERT(nIndex >= 0);
ASSERT(nIndex < GetData()->nDataLength);
return m_pchData[nIndex];
}
#endif // __APGTSSTR_H_ 1