128 lines
2.7 KiB
C
128 lines
2.7 KiB
C
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//-----------------------------------------------------------------------------
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//
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// Microsoft Forms
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// Copyright: (c) 1994-1995, Microsoft Corporation
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// All rights Reserved.
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// Information contained herein is Proprietary and Confidential.
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//
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// File CSTR.HXX
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//
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// Contents Class definition for length prefix string class
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//
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// Classes CStr
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//
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// Stolen from Trident
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//
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//-----------------------------------------------------------------------------
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class ANSIString
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{
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public:
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ANSIString(WCHAR *pchWide);
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~ANSIString() { delete _pch; }
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void Set(WCHAR *pchWide);
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operator LPSTR () const { return _pch; }
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private:
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char *_pch;
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};
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/*
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Use this macro to avoid initialization of embedded
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objects when parent object zeros out the memory
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*/
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#define CSTR_NOINIT ((float)0.0)
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/*
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This class defines a length prefix 0 terminated string object. It points
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to the beginning of the characters so the pointer returned can be used in
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normal string operations taking into account that of course that it can
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contain any binary value.
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*/
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class CStr
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{
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public:
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DECLARE_MEMALLOC_NEW_DELETE()
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/*
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Default constructor
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*/
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CStr()
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{
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_pch = 0;
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}
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/*
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Special constructor to AVOID construction for embedded
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objects...
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*/
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CStr(float num)
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{
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Assert(_pch == 0);
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}
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/*
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Destructor will free data
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*/
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~CStr()
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{
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_Free();
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}
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operator LPTSTR () const { return _pch; }
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HRESULT Set(LPCTSTR pch);
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HRESULT Set(LPCTSTR pch, UINT uc);
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HRESULT SetMultiByte(LPCSTR pch);
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HRESULT GetMultiByte(LPSTR pch, UINT cch);
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HRESULT SetBSTR(const BSTR bstr);
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HRESULT Set(const CStr &cstr);
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void TakeOwnership(CStr &cstr);
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UINT Length() const;
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// Update the internal length indication without changing any allocation.
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HRESULT SetLengthNoAlloc( UINT uc );
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// Reallocate the string to a larger size, length unchanged.
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HRESULT ReAlloc( UINT uc );
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HRESULT Append(LPCTSTR pch);
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HRESULT Append(LPCTSTR pch, UINT uc);
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HRESULT AppendMultiByte(LPCSTR pch);
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void Free()
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{
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_Free();
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_pch = 0;
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}
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TCHAR * TakePch() { TCHAR * pch = _pch; _pch = NULL; return(pch); }
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HRESULT AllocBSTR(BSTR *pBSTR) const;
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HRESULT TrimTrailingWhitespace();
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private:
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void _Free();
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LPTSTR _pch;
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NO_COPY(CStr);
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public:
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HRESULT Clone(CStr **ppCStr) const;
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BOOL Compare (const CStr *pCStr) const;
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WORD ComputeCrc() const;
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BOOL IsNull(void) const { return _pch == NULL ? TRUE : FALSE; }
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HRESULT Save(IStream * pstm) const;
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HRESULT Load(IStream * pstm);
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ULONG GetSaveSize() const;
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};
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