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113 lines
3.4 KiB
113 lines
3.4 KiB
//--------------------------------------------------------------------
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// Microsoft OLE-DB Monarch
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//
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// Copyright 1997 Microsoft Corporation. All Rights Reserved.
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//
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// @doc
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//
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// @module colname.h |
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//
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// Contains utility functions for maintaining property lists (symbol table?)
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//
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// @rev 0 | 12-Feb-97 | v-charca | Created
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// 1 | 24-Oct-98 | danleg | cleanup
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//
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#ifndef __PROPERTYLIST_INCL__
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#define __PROPERTYLIST_INCL__
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//--------------------------------------------------------------------
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// @func Makes a new copy of UNICODE string
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// @side Allocates enough bytes from memory object to hold string
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// @rdesc Pointer to new UNICODE string
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inline WCHAR * CopyString( WCHAR const * pwc )
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{
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unsigned c = wcslen( pwc ) + 1;
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WCHAR *pwcNew = new WCHAR[c];
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RtlCopyMemory( pwcNew, pwc, c * sizeof WCHAR );
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return pwcNew;
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}
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//--------------------------------------------------------------------
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// @func Makes a new copy of UNICODE string
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// @side Allocates enough bytes from memory object to hold string
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// @rdesc Pointer to new UNICODE string
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inline LPWSTR CoTaskStrDup
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(
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const WCHAR * pwszOrig,
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UINT cLen
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)
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{
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UINT cBytes = (cLen+1) * sizeof WCHAR;
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WCHAR* pwszCopy = (WCHAR *) CoTaskMemAlloc( cBytes );
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if ( 0 != pwszCopy )
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RtlCopyMemory( pwszCopy, pwszOrig, cBytes );
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return pwszCopy;
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}
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//--------------------------------------------------------------------
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// @func Makes a new copy of UNICODE string
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// @side Allocates enough bytes from memory object to hold string
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// @rdesc Pointer to new UNICODE string
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inline LPWSTR CoTaskStrDup
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(
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const WCHAR * pwszOrig
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)
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{
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return CoTaskStrDup( pwszOrig, wcslen(pwszOrig) );
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}
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//--------------------------------------------------------------------
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typedef struct tagHASHENTRY
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{
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LPWSTR wcsFriendlyName;
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UINT wHashValue;
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DWORD dbType;
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DBID dbCol;
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tagHASHENTRY* pNextHashEntry;
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} HASHENTRY;
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class CPropertyList
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{
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public: //@access public functions
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CPropertyList(CPropertyList** ppGlobalPropertyList);
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~CPropertyList();
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HRESULT LookUpPropertyName( LPWSTR wszPropertyName,
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DBCOMMANDTREE** ppct,
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DBTYPE* pdbType );
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HRESULT SetPropertyEntry ( LPWSTR pwszFriendlyName,
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DWORD dbType,
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GUID guidPropset,
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DBKIND eKind,
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LPWSTR pwszPropName,
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BOOL fGlobal );
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CIPROPERTYDEF* GetPropertyTable( UINT* pcSize );
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void DeletePropertyTable( CIPROPERTYDEF* pCiPropTable,
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UINT cSize );
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protected: //@access protected functions
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HASHENTRY* FindPropertyEntry( LPWSTR wszPropertyName,
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UINT *puHashValue );
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HASHENTRY* GetPropertyEntry( LPWSTR wszPropertyName,
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UINT *puHashValue );
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inline UINT GetHashValue( LPWSTR wszPropertyName );
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protected: //@access protected data
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XArray<HASHENTRY*> m_aBucket; // Array of pointers to hash buckets
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int m_cMaxBucket; // Number of hash buckets (PRIME!)
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CPropertyList** m_ppGlobalPropertyList; // Pointer to the global property list
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};
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#endif
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