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220 lines
11 KiB
220 lines
11 KiB
#if !defined(_BCL_NTBASEUNICODESTRINGBUFFER_H_INCLUDED_)
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#define _BCL_NTBASEUNICODESTRINGBUFFER_H_INCLUDED_
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#pragma once
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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bcl_w32baseunicodestringbuffer.h
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Abstract:
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Author:
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Michael Grier (MGrier) 2/6/2002
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Revision History:
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--*/
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#include <windows.h>
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#include <bcl_inlinestring.h>
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#include <bcl_unicodechartraits.h>
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#include <bcl_w32common.h>
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#include <bcl_vararg.h>
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#include <bcl_ntunicodestringalgorithms.h>
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#include <limits.h>
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namespace BCL
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{
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template <typename TBuffer, typename TCallDispositionT, typename TPublicErrorReturnTypeT>
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class CNtBaseUnicodeStringBufferTraits : public BCL::CUnicodeCharTraits<TBuffer, TCallDispositionT>, public BCL::CNtNullTerminatedUnicodeStringAlgorithms<TBuffer, TCallDispositionT>
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{
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public:
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typedef CNtBaseUnicodeStringBufferTraits TThis;
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friend BCL::CPureString<TThis>;
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friend BCL::CUnicodeCharTraits<TBuffer, TCallDispositionT>;
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typedef BCL::CPureString<TThis> TPureString;
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typedef TCallDispositionT TCallDisposition;
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typedef TPublicErrorReturnTypeT TPublicErrorReturnType;
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typedef CNtStringComparisonResult TComparisonResult;
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typedef BCL::CConstantPointerAndCountPair<WCHAR, SIZE_T> TConstantPair;
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typedef BCL::CMutablePointerAndCountPair<WCHAR, SIZE_T> TMutablePair;
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typedef CNtCaseInsensitivityData TCaseInsensitivityData;
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typedef SIZE_T TSizeT;
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typedef CNtMBCSToUnicodeDataIn TDecodingDataIn;
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typedef CNtMBCSToUnicodeDataOut TDecodingDataOut;
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typedef CNtUnicodeToMBCSDataIn TEncodingDataIn;
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typedef CNtUnicodeToMBCSDataOut TEncodingDataOut;
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typedef CConstantPointerAndCountPair<CHAR, SIZE_T> TConstantNonNativePair;
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typedef CMutablePointerAndCountPair<CHAR, SIZE_T> TMutableNonNativePair;
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typedef BCL::CNtPWSTRAllocationHelper TPWSTRAllocationHelper;
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typedef BCL::CNtPSTRAllocationHelper TPSTRAllocationHelper;
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using BCL::CNtNullTerminatedUnicodeStringAlgorithms<TBuffer, TCallDispositionT>::TMutableString;
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using BCL::CNtNullTerminatedUnicodeStringAlgorithms<TBuffer, TCallDispositionT>::TConstantString;
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using BCL::CNtNullTerminatedUnicodeStringAlgorithms<TBuffer, TCallDispositionT>::TMutableNonNativeString;
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using BCL::CNtNullTerminatedUnicodeStringAlgorithms<TBuffer, TCallDispositionT>::TConstantNonNativeString;
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// exposing the things from our private base class
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using BCL::CUnicodeCharTraits<TBuffer, TCallDispositionT>::CopyIntoBuffer;
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using BCL::CNtNullTerminatedUnicodeStringAlgorithms<TBuffer, TCallDispositionT>::CopyIntoBuffer;
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using BCL::CUnicodeCharTraits<TBuffer, TCallDispositionT>::DetermineRequiredCharacters;
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using BCL::CNtNullTerminatedUnicodeStringAlgorithms<TBuffer, TCallDispositionT>::DetermineRequiredCharacters;
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static inline TMutablePair & __fastcall MutableBufferPair(BCL::CBaseString *p) { return static_cast<TBuffer *>(p)->m_pair; }
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static inline const TConstantPair & __fastcall BufferPair(const BCL::CBaseString *p) { return static_cast<const TConstantPair &>(static_cast<const TBuffer *>(p)->m_pair); }
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static inline TConstantPair __fastcall GetStringPair(const BCL::CBaseString *p) { return TConstantPair(TBuffer::TTraits::GetBufferPtr(p), TBuffer::TTraits::GetStringCch(p)); }
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static inline TMutablePair __fastcall GetOffsetMutableBufferPair(const BCL::CBaseString *p, TSizeT cchOffset) { BCL_ASSERT(cchOffset <= TBuffer::TTraits::GetBufferCch(p)); if (cchOffset > TBuffer::TTraits::GetBufferCch(p)) cchOffset = TBuffer::TTraits::GetBufferCch(p); return TMutablePair(const_cast<TMutableString>(TBuffer::TTraits::GetBufferPtr(p)) + cchOffset, TBuffer::TTraits::GetBufferCch(p) - cchOffset); }
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static inline bool __fastcall AnyAccessors(const BCL::CBaseString *p) { return (static_cast<const TBuffer *>(p)->m_cAttachedAccessors != 0); }
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static inline bool __fastcall NoAccessors(const BCL::CBaseString *p) { return (static_cast<const TBuffer *>(p)->m_cAttachedAccessors == 0); }
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static inline TCallDisposition __fastcall NoAccessorsCheck(const BCL::CBaseString *p) { if (TBuffer::TTraits::AnyAccessors(p)) { return TCallDisposition::InternalError_ObjectLocked(); } return TCallDisposition::Success(); }
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static inline PCWSTR __fastcall GetBufferPtr(const BCL::CBaseString *p) { return static_cast<const TBuffer *>(p)->m_pair.GetPointer(); }
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static inline PWSTR __fastcall GetMutableBufferPtr(BCL::CBaseString *p) { return static_cast<TBuffer *>(p)->m_pair.GetPointer(); }
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static inline SIZE_T __fastcall GetBufferCch(const BCL::CBaseString *p) { return static_cast<const TBuffer *>(p)->m_pair.GetCount(); }
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static inline void __fastcall SetBufferPointerAndCount(BCL::CBaseString *p, PWSTR pszBuffer, SIZE_T cchBuffer) { static_cast<TBuffer *>(p)->m_pair.SetPointerAndCount(pszBuffer, cchBuffer); }
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static inline SIZE_T __fastcall GetStringCch(const BCL::CBaseString *p) { return static_cast<const TBuffer *>(p)->m_cchString; }
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static inline void _fastcall SetStringCch(BCL::CBaseString *p, SIZE_T cch)
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{
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BCL_ASSERT((cch == 0) || (cch < TBuffer::TTraits::GetBufferCch(p)));
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static_cast<TBuffer *>(p)->m_cchString = cch;
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if (TBuffer::TTraits::GetBufferCch(p) != 0)
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TBuffer::TTraits::GetMutableBufferPtr(p)[cch] = L'\0';
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}
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static inline void __fastcall IntegrityCheck(const BCL::CBaseString *p) { }
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static inline PWSTR __fastcall GetInlineBufferPtr(const BCL::CBaseString *p) { return static_cast<const TBuffer *>(p)->GetInlineBufferPtr(); }
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static inline SIZE_T __fastcall GetInlineBufferCch(const BCL::CBaseString *p) { return static_cast<const TBuffer *>(p)->GetInlineBufferCch(); }
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static inline TCallDisposition __fastcall ReallocateBuffer(BCL::CBaseString *p, SIZE_T cch)
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{
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PWSTR psz = NULL;
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SIZE_T cb = (cch * sizeof(WCHAR));
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TBuffer *pBuffer = static_cast<TBuffer *>(p);
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if (cch != (cb / sizeof(WCHAR)))
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return TCallDisposition::ArithmeticOverflow();
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if (pBuffer->GetBufferPtr() != NULL)
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{
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::SetLastError(ERROR_SUCCESS);
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psz =
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reinterpret_cast<PWSTR>(
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::RtlReAllocateHeap(
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RtlProcessHeap(),
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0,
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const_cast<PWSTR>(pBuffer->GetBufferPtr()),
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cb));
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if (psz == NULL)
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{
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const DWORD dwLastError = ::GetLastError();
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// HeapReAlloc doesn't always set last error, so we rely on this
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// fact to find that the win32 last error hasn't changed from
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// before to infer ERROR_OUTOFMEMORY. -mgrier 2/2/2002
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if (dwLastError == ERROR_SUCCESS)
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return TCallDisposition::OutOfMemory();
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return TCallDisposition::FromWin32Error(dwLastError);
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}
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}
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else
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{
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psz =
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reinterpret_cast<PWSTR>(
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::RtlAllocateHeap(
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RtlProcessHeap(),
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0,
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cb));
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}
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if (psz == NULL)
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return TCallDisposition::OutOfMemory();
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pBuffer->SetBufferPointerAndCount(psz, cch);
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return TCallDisposition::Success();
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}
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static inline void __fastcall DeallocateBuffer(PCWSTR psz) { if (psz != NULL) ::RtlFreeHeap(RtlProcessHeap(), 0, reinterpret_cast<PVOID>(const_cast<PWSTR>(psz))); }
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static inline void __fastcall DeallocateDynamicBuffer(BCL::CBaseString *p) { static_cast<TBuffer *>(p)->DeallocateDynamicBuffer(); }
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}; // class CNtBaseUnicodeStringBufferTraits
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class CNtBaseUnicodeStringBufferAddIn
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{
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protected:
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enum { LengthQuantaPerChar = 1; }; // One unit of length is one character
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inline CNtBaseUnicodeStringBufferAddIn(PWSTR pszInitialBuffer, SIZE_T cchInitialBuffer) : m_pair(pszInitialBuffer, cchInitialBuffer), m_cchString(0), m_cAttachedAccessors(0) { }
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inline static BCL::CConstantPointerAndCountPair<WCHAR, SIZE_T> PairFromPCWSTR(PCWSTR psz) { return BCL::CConstantPointerAndCountPair<WCHAR, SIZE_T>(psz, (psz == NULL) ? 0 : wcslen(psz)); }
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inline static BCL::CConstantPointerAndCountPair<CHAR, SIZE_T> PairFromPCSTR(PCSTR psz) { return BCL::CConstantPointerAndCountPair<CHAR, SIZE_T>(psz, (psz == NULL) ? 0 : strlen(psz)); }
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inline static CNtANSIToUnicodeDataIn ANSIDecodingDataIn() { return CNtANSIToUnicodeDataIn(); }
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inline static CNtOEMToUnicodeDataIn OEMDecodingDataIn() { return CNtOEMToUnicodeDataIn(); }
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inline static CNtUnicodeToANSIDataIn ANSIEncodingDataIn() { return CNtUnicodeToANSIDataIn t; }
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inline static CNtUnicodeToOEMDataIn OEMEncodingDataIn() { return CNtUnicodeToOEMDataIn t; }
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inline BCL::CPointerAndCountPair<WCHAR, SIZE_T> MutablePair() { return m_pair; }
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inline BCL::CConstantPointerAndCountPair<WCHAR, SIZE_T> ConstantPair() const { return m_pair; }
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inline BCL::CPointerAndCountPair<WCHAR, SIZE_T> MutableStringPair() { return return BCL::CPointerAndCountRefPair<WCHAR, SIZE_T>(m_pair.GetPointer(), m_cchString); }
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inline BCL::CConstantPointerAndCountPair<WCHAR, SIZE_T> ConstantStringPair() const { return m_pair; }
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private:
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BCL::CMutablePointerAndCountPair<WCHAR, SIZE_T> m_pair;
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SIZE_T m_cchString;
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LONG m_cAttachedAccessors;
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};
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class CNtBaseUNICODE_STRINGBufferAddIn
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{
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protected:
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enum { LengthQuantaPerChar = 2; }; // Two units of length are one charater
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inline CNtBaseUnicodeStringBufferAddIn(PWSTR pszInitialBuffer, USHORT cchInitialBuffer) : m_pair(pszInitialBuffer, cchInitialBuffer), m_cchString(0), m_cAttachedAccessors(0) { }
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inline static BCL::CConstantPointerAndCountPair<WCHAR, USHORT> PairFromPCWSTR(PCWSTR psz) { return BCL::CConstantPointerAndCountPair<WCHAR, USHORT>(psz, (psz == NULL) ? 0 : wcslen(psz)); }
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inline static BCL::CConstantPointerAndCountPair<CHAR, USHORT> PairFromPCSTR(PCSTR psz) { return BCL::CConstantPointerAndCountPair<CHAR, USHORT>(psz, (psz == NULL) ? 0 : strlen(psz)); }
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inline static CNtANSIToUnicodeDataIn ANSIDecodingDataIn() { return CNtANSIToUnicodeDataIn(); }
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inline static CNtOEMToUnicodeDataIn OEMDecodingDataIn() { return CNtOEMToUnicodeDataIn(); }
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inline static CNtUnicodeToANSIDataIn ANSIEncodingDataIn() { return CNtUnicodeToANSIDataIn t; }
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inline static CNtUnicodeToOEMDataIn OEMEncodingDataIn() { return CNtUnicodeToOEMDataIn t; }
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inline BCL::CPointerAndCountRefPair<WCHAR, USHORT> MutablePair() { return BCL::CPointerAndCountRefPair<WCHAR, USHORT>(m_us.Buffer, m_us.MaximumLength); }
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inline BCL::CConstantPointerAndCountPair<WCHAR, USHORT> ConstantPair() const { return BCL::CConstantPointerAndCountPair<WCHAR, USHORT>(m_us.Buffer, m_us.MaximumLength); }
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inline BCL::CPointerAndCountRefPair<WCHAR, USHORT> MutableStringPair() { return BCL::CPointerAndCountRefPair<WCHAR, USHORT>(m_us.Buffer, m_us.Length); }
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inline BCL::CConstantPointerAndCountPair<WCHAR, USHORT> ConstantStringPair() const { return BCL::CConstantPointerAndCountPair<WCHAR, USHORT>(m_us.Buffer, m_us.Length); }
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private:
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UNICODE_STRING m_us;
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BCL::CMutablePointerAndCountPair<WCHAR, SIZE_T> m_pair;
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SIZE_T m_cchString;
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LONG m_cAttachedAccessors;
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};
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}; // namespace BCL
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#endif // !defined(_BCL_NTBASEUNICODESTRINGBUFFER_H_INCLUDED_)
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