277 lines
7.8 KiB
C++
277 lines
7.8 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1997 - 2002.
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//
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// File: regprop.hxx
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//
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// Contents: Class for parsing cached properties as listed in the registry.
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//
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// Classes: CParseRegistryProperty
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//
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// History: 11-Nov-97 KyleP Created.
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//
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//----------------------------------------------------------------------------
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#pragma once
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#include <ciguid.hxx>
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#include <ctype.h>
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//+---------------------------------------------------------------------------
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//
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// Class: CParseRegistryProperty
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//
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// Purpose: Parses a registry property entry
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//
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// History: 11-Nov-97 KyleP Created.
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//
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//----------------------------------------------------------------------------
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class CParseRegistryProperty
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{
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public:
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inline CParseRegistryProperty( WCHAR *pValueName, ULONG uValueType,
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VOID *pValueData, ULONG uValueLength );
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BOOL IsOk() { return _fOk; }
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CFullPropSpec & GetFPS() { return _fps; }
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ULONG Type() { return _vt; }
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ULONG Size() { return _cb; }
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BOOL IsModifiable() { return _fModifiable; }
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DWORD StorageLevel() { return _dwStoreLevel; }
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private:
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BOOL _fOk; // TRUE if parse succeeded
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CFullPropSpec _fps; // Property stored here
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ULONG _vt; // Datatype
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ULONG _cb; // Size
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BOOL _fModifiable; // Is this modifiable once entered into metabase?
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DWORD _dwStoreLevel;// Storage level
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};
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//+---------------------------------------------------------------------------
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//
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// Class: CBuildRegistryProperty
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//
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// Purpose: Builds a registry property entry
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//
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// History: 11-Nov-97 KyleP Created.
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//
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//----------------------------------------------------------------------------
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class CBuildRegistryProperty
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{
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public:
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inline CBuildRegistryProperty( CFullPropSpec const & fps, ULONG vt,
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ULONG cb, DWORD dwStoreLevel = SECONDARY_STORE,
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BOOL fModifiable = TRUE);
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WCHAR const * GetValue() { return _xwcsValue.Get(); }
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WCHAR const * GetData() { return _xwcsData.Get(); }
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private:
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XGrowable<WCHAR> _xwcsValue;
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XGrowable<WCHAR> _xwcsData;
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};
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//+---------------------------------------------------------------------------
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//
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// Member: CParseRegistryProperty::CParseRegistryProperty, public
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//
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// Synopsis: Parses a registry entry for a property value
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//
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// Arguments: [pValueName] -- Name of value (should be FULLPROPSPEC)
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// [pValueType] -- Value type. Should be REG_SZ
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// [pValueData] -- Data (should be "<type>,<size>"
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// [uValueLength] -- Size of [pValueData]
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//
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// History: 10-Nov-97 KyleP Created
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//
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//----------------------------------------------------------------------------
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inline CParseRegistryProperty::CParseRegistryProperty( WCHAR *pValueName,
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ULONG uValueType,
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VOID *pValueData,
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ULONG uValueLength )
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: _fOk( FALSE ),
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_dwStoreLevel( SECONDARY_STORE ),
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_fModifiable( TRUE )
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{
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//
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// Format is GUID [PROPID | "PropName"] = datatype,length[,storagelevel[,fModifiable]]
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// storagelevel, if absent, defaults to Secondary Store.
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// fModifiable, if absent, defaults to TRUE.
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do
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{
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//
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// Has to be at least 38 characters long (36 for guid plus space + name/number)
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//
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unsigned cc = wcslen(pValueName);
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if ( cc < 38 || pValueName[36] != L' ' )
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break;
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if ( REG_SZ != uValueType )
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break;
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//
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// Parse GUID
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//
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GUID guid;
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pValueName[36] = 0;
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if ( !ParseGuid( pValueName, guid ) )
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break;
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_fps.SetPropSet( guid );
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pValueName[36] = L' ';
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//
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// Parse number/name
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//
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PROPID pid = 0;
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for ( WCHAR * p = pValueName + 37; *p; p++ )
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{
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if ( !isdigit(*p) )
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{
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pid = 0;
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break;
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}
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pid = pid * 10 + *p - L'0';
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}
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if ( 0 == pid )
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{
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if ( !_fps.SetProperty( pValueName + 37 ) )
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THROW( CException( E_OUTOFMEMORY ) );
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}
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else
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_fps.SetProperty( pid );
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//
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// Parse data type
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//
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_vt = 0;
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for ( p = (WCHAR *)pValueData; *p && isdigit(*p); p++ )
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_vt = _vt * 10 + *p - L'0';
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if ( L',' != *p )
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break;
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_cb = 0;
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for ( p++; *p && isdigit(*p); p++ )
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_cb = _cb * 10 + *p - L'0';
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//
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// Parse storage level
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//
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if ( L',' == *p )
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{
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_dwStoreLevel = 0;
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for ( p++; *p && isdigit(*p); p++ )
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_dwStoreLevel = _dwStoreLevel * 10 + *p - L'0';
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// if we don't see a primary or a secondary store signature,
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// consider the registry string corrupt.
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if (PRIMARY_STORE != _dwStoreLevel &&
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SECONDARY_STORE != _dwStoreLevel)
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break;
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}
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//
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// Parse modifiability
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//
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if ( L',' == *p )
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{
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int iVal = 0;
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for ( p++; *p && isdigit(*p); p++ )
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iVal = iVal * 10 + *p - L'0';
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// if we don't see a TRUE (1) or FALSE (0) signature,
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// consider the registry string corrupt.
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if (0 != iVal && 1 != iVal)
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break;
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_fModifiable = BOOL(iVal);
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}
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_fOk = TRUE;
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} while(FALSE);
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CBuildRegistryProperty::CBuildRegistryProperty, public
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//
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// Synopsis: Builds property registry entry from components
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//
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// Arguments: [fps] -- Property
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// [vt] -- Data type
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// [cb] -- Size of data in cache
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// [dwStoreLevel] -- Property storage level
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// [fModifiable] -- Can property metadata be modified once set?
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//
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// History: 10-Nov-97 KyleP Created
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//
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//----------------------------------------------------------------------------
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inline CBuildRegistryProperty::CBuildRegistryProperty( CFullPropSpec const & fps, ULONG vt,
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ULONG cb, DWORD dwStoreLevel,
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BOOL fModifiable )
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{
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GUID const & guid = fps.GetPropSet();
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unsigned cc = 36 + 10 + 2; // GUID + space + MAX_INT + null
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if ( fps.IsPropertyName() )
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cc += wcslen( fps.GetPropertyName() );
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_xwcsValue.SetSize( cc );
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swprintf( _xwcsValue.Get(),
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L"%08lX-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X ",
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guid.Data1,
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guid.Data2,
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guid.Data3,
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guid.Data4[0], guid.Data4[1],
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guid.Data4[2], guid.Data4[3],
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guid.Data4[4], guid.Data4[5],
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guid.Data4[6], guid.Data4[7] );
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if ( fps.IsPropertyName() )
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swprintf( _xwcsValue.Get() + 37, L"%ws", fps.GetPropertyName() );
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else
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swprintf( _xwcsValue.Get() + 37, L"%u", fps.GetPropertyPropid() );
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_xwcsData.SetSize( 35 ); // 3*MAX_INT + 3*comma + fModifiable + NULL =
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// 3*10 + 3 + 1 + 1
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swprintf( _xwcsData.Get(), L"%u,%u,%u,%u", vt, cb, dwStoreLevel, fModifiable?1:0 );
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}
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