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165 lines
3.8 KiB
165 lines
3.8 KiB
/*++
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Copyright (c) 1999 Microsoft Corporation
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Module Name:
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vs_str.hxx
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Abstract:
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Various defines for general usage
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Author:
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Adi Oltean [aoltean] 07/09/1999
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Revision History:
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Name Date Comments
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aoltean 07/09/1999 Created
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aoltean 08/11/1999 Adding throw specification
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aoltean 09/03/1999 Adding DuplicateXXX functions
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aoltean 09/09/1999 dss -> vss
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aoltean 09/20/1999 Adding ThrowIf, Err, Msg, MsgNoCR, etc.
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--*/
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#ifndef __VSS_STR_HXX__
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#define __VSS_STR_HXX__
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#if _MSC_VER > 1000
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#pragma once
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#endif
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////////////////////////////////////////////////////////////////////////
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// Standard foo for file name aliasing. This code block must be after
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// all includes of VSS header files.
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//
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#ifdef VSS_FILE_ALIAS
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#undef VSS_FILE_ALIAS
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#endif
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#define VSS_FILE_ALIAS "INCSTRH"
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//
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////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// Misc string routines
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inline void VssDuplicateStr(
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OUT LPWSTR& pwszDestination,
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IN LPCWSTR pwszSource
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)
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{
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BS_ASSERT(pwszDestination == NULL);
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if (pwszSource == NULL)
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pwszDestination = NULL;
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else
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{
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pwszDestination = (LPWSTR)::CoTaskMemAlloc(sizeof(WCHAR)*(1 + ::wcslen(pwszSource)));
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if (pwszDestination != NULL)
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::wcscpy(pwszDestination, pwszSource);
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}
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}
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inline void VssSafeDuplicateStr(
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IN CVssFunctionTracer& ft,
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OUT LPWSTR& pwszDestination,
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IN LPCWSTR pwszSource
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) throw(HRESULT)
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{
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BS_ASSERT(pwszDestination == NULL);
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if (pwszSource == NULL)
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pwszDestination = NULL;
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else
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{
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pwszDestination = (LPWSTR)::CoTaskMemAlloc(sizeof(WCHAR)*(1 + ::wcslen(pwszSource)));
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if (pwszDestination == NULL)
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ft.Throw( VSSDBG_GEN, E_OUTOFMEMORY, L"Memory allocation error");
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::wcscpy(pwszDestination, pwszSource);
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}
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}
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inline LPWSTR VssAllocString(
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IN CVssFunctionTracer& ft,
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IN size_t nStringLength
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)
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{
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BS_ASSERT(nStringLength > 0);
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LPWSTR pwszStr = reinterpret_cast<LPWSTR>(::CoTaskMemAlloc((nStringLength + 1) * sizeof(WCHAR)));
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if (pwszStr == NULL)
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ft.Throw( VSSDBG_GEN, E_OUTOFMEMORY, L"Memory allocation error");
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return pwszStr;
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}
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inline void VssFreeString(
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IN OUT LPCWSTR& pwszString
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)
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{
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::CoTaskMemFree(const_cast<LPWSTR>(pwszString));
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pwszString = NULL;
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}
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inline LPWSTR VssReallocString(
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IN CVssFunctionTracer& ft,
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IN LPWSTR pwszString,
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IN LONG lNewStrLen // Without the zero character.
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)
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{
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LPWSTR pwszNewString = (LPWSTR)::CoTaskMemRealloc( (PVOID)(pwszString),
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sizeof(WCHAR) * (lNewStrLen + 1));
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if (pwszNewString == NULL)
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ft.Throw( VSSDBG_GEN, E_OUTOFMEMORY, L"Memory allocation error");
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return pwszNewString;
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}
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inline bool VssIsStrEqual(
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IN LPCWSTR wsz1,
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IN LPCWSTR wsz2
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)
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{
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if ((wsz1 == NULL) && (wsz2 == NULL))
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return true;
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if (wsz1 && wsz2 && (::wcscmp(wsz1, wsz2) == 0) )
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return true;
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return false;
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}
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inline void VssConcatenate(
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IN CVssFunctionTracer& ft,
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IN OUT LPWSTR pwszDestination,
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IN size_t nDestinationLength,
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IN LPCWSTR wszSource1,
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IN LPCWSTR wszSource2
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)
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{
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BS_ASSERT(pwszDestination);
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BS_ASSERT(wszSource1);
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BS_ASSERT(wszSource2);
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BS_ASSERT(nDestinationLength > 0);
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// Check if the buffer is passed
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if (::wcslen(wszSource1) + ::wcslen(wszSource2) > nDestinationLength ) {
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BS_ASSERT(false);
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ft.Throw( VSSDBG_SWPRV, E_UNEXPECTED,
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L"Buffer not large enough. ( %d + %d > %d )",
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::wcslen(wszSource1), ::wcslen(wszSource2), nDestinationLength);
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}
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::wcscpy(pwszDestination, wszSource1);
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::wcscat(pwszDestination, wszSource2);
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}
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#endif // __VSS_STR_HXX__
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