193 lines
4.7 KiB
C++
193 lines
4.7 KiB
C++
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1995 - 1998.
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//
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// File: qcanon.cxx
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//
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// Contents: CCiCanonicalOutput class
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//
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// History: 6-06-95 srikants Created
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//
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//--------------------------------------------------------------------------
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#include <pch.cxx>
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#pragma hdrstop
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#include <qcanon.hxx>
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//+---------------------------------------------------------------------------
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//
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// Function: CastToStorageVariant
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//
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// Synopsis: To treat a variant as a CStorageVariant. Because CStorageVariant
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// derives from PROPVARIANT in a "protected" fashion, we cannot
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// directly typecast a PROPVARIANT * to a CStorageVariant *
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//
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// Arguments: [varnt] - The variant that must be type casted.
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//
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// Returns: A pointer to varnt as a CStorageVariant.
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//
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// History: 6-06-95 srikants Created
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//
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// Notes: There are two overloaded implementations, one to convert
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// a reference to const to a pointer to const.
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//
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//----------------------------------------------------------------------------
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inline
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CStorageVariant * CastToStorageVariant( PROPVARIANT & varnt )
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{
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return (CStorageVariant *) ((void *) &varnt);
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}
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inline
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CStorageVariant const * CastToStorageVariant( PROPVARIANT const & varnt )
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{
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return (CStorageVariant *) ((void *) &varnt);
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}
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//+---------------------------------------------------------------------------
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//
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// Method: CCiCanonicalOutput::PutWString, static public
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//
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// Synopsis:
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//
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// Arguments: [stm] -
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// [pwszStr] -
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//
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// Returns:
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//
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// History: 6-21-95 srikants Created
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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void CCiCanonicalOutput::PutWString( PSerStream & stm, WCHAR const * pwszStr )
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{
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ULONG cwc = (0 != pwszStr) ? wcslen( pwszStr ) : 0;
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stm.PutULong( cwc );
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if (cwc)
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stm.PutWChar( pwszStr, cwc );
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}
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//+---------------------------------------------------------------------------
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//
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// Method: CCiCanonicalOutput::GetWString, static public
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//
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// Synopsis:
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//
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// Arguments: [stm] -
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// [fSuccess] -
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//
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// Returns:
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//
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// History: 6-21-95 srikants Created
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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WCHAR * CCiCanonicalOutput::GetWString( PDeSerStream & stm, BOOL & fSuccess )
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{
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ULONG cwc = stm.GetULong();
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fSuccess = TRUE;
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if ( 0 == cwc )
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{
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return 0;
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}
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ULONG cb = (cwc+1) * sizeof(WCHAR);
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WCHAR * pwszStr = (WCHAR *) CoTaskMemAlloc( cb );
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if ( 0 == pwszStr )
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{
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fSuccess = FALSE;
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return 0;
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}
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stm.GetWChar( pwszStr, cwc );
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pwszStr[cwc] = L'\0';
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return pwszStr;
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}
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//+---------------------------------------------------------------------------
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//
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// Method: CCiCanonicalOutput::AllocAndCopyWString, static public
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//
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// Synopsis:
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//
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// Arguments: [pSrc] -
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//
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// Returns:
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//
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// History: 6-22-95 srikants Created
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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WCHAR * CCiCanonicalOutput::AllocAndCopyWString( const WCHAR * pSrc )
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{
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WCHAR * pDst = 0;
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if ( 0 != pSrc )
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{
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const cb = ( wcslen( pSrc ) + 1 ) * sizeof(WCHAR);
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pDst = (WCHAR *) new WCHAR [ cb/sizeof(WCHAR) ];
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if ( 0 != pDst )
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{
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RtlCopyMemory( pDst, pSrc, cb );
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}
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}
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return pDst;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CCiCanonicalQueryRows::Init
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//
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// Synopsis: Initializes the query rows output structure for writing
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// results out.
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//
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// History: 7-01-96 srikants Created
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//
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//----------------------------------------------------------------------------
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void CCiCanonicalQueryRows::Init()
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{
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RtlZeroMemory( this, sizeof(CCiCanonicalQueryRows) );
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InitVersion();
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SetOutputType( CCiCanonicalOutput::eQueryRows );
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CQuadByteAlignedBuffer::CQuadByteAlignedBuffer
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//
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// Synopsis: Constructor for a quad aligned buffer class.
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//
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// Arguments: [cbBuffer] - Number of bytes in the buffer class.
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//
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// History: 6-16-96 srikants Created
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//
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//----------------------------------------------------------------------------
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CQuadByteAlignedBuffer::CQuadByteAlignedBuffer( ULONG cbBuffer )
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{
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// allocator guarantees 8-byte alignment
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_pbAlloc = new BYTE [ cbBuffer ];
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_cbAlloc = cbBuffer;
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Win4Assert( ( ((ULONG_PTR) _pbAlloc) & 0x7) == 0 );
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_pbAligned = _pbAlloc;
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_cbAligned = _cbAlloc;
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}
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