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1481 lines
36 KiB
1481 lines
36 KiB
/*++
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// Copyright (c) 1999-2001 Microsoft Corporation, All Rights Reserved
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Module Name:
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OBJPATH.CPP
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Abstract:
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Object path parser.
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History:
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--*/
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#include <ole2.h>
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#include <windows.h>
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#include <stdio.h>
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#include <genlex.h>
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#include <opathlex.h>
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#include <objpath.h>
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inline LPWSTR Macro_CloneLPWSTR(LPCWSTR x)
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{
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if (x)
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{
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LPWSTR szTemp = new wchar_t[wcslen(x) + 1];
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if (szTemp)
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wcscpy(szTemp, x);
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return szTemp;
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}
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else
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return NULL;
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}
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ParsedObjectPath::ParsedObjectPath()
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{
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m_pServer = 0; // NULL if no server
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m_dwNumNamespaces = 0; // 0 if no namespaces
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m_dwAllocNamespaces = 2;
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m_paNamespaces = new LPWSTR[m_dwAllocNamespaces];
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if(m_paNamespaces)
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for (unsigned i = 0; i < m_dwAllocNamespaces; i++)
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m_paNamespaces[i] = 0;
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m_pClass = 0; // Class name
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m_dwNumKeys = 0; // 0 if no keys (just a class name)
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m_bSingletonObj = FALSE;
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m_dwAllocKeys = 2;
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m_paKeys = new KeyRef *[m_dwAllocKeys];
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}
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ParsedObjectPath::~ParsedObjectPath()
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{
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if (m_pServer)
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delete m_pServer;
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if (m_paNamespaces)
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{
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for (DWORD dwIx = 0; dwIx < m_dwNumNamespaces; dwIx++)
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delete m_paNamespaces[dwIx];
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delete m_paNamespaces;
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}
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if (m_pClass)
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delete m_pClass;
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if (m_paKeys)
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{
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for (DWORD dwIx = 0; dwIx < m_dwNumKeys; dwIx++)
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delete m_paKeys[dwIx];
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delete m_paKeys;
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}
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}
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BOOL ParsedObjectPath::SetClassName(LPCWSTR wszClassName)
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{
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if (m_pClass)
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delete [] m_pClass;
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if(wszClassName == NULL)
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{
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m_pClass = NULL;
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}
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else
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{
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m_pClass = Macro_CloneLPWSTR(wszClassName);
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}
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return TRUE;
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}
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BOOL ParsedObjectPath::IsClass()
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{
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if(!IsObject())
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return FALSE;
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return (m_dwNumKeys == 0 && !m_bSingletonObj);
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}
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BOOL ParsedObjectPath::IsInstance()
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{
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return IsObject() && !IsClass();
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}
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BOOL ParsedObjectPath::IsObject()
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{
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if(m_pClass == NULL)
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return FALSE;
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if(m_pServer)
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{
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return (m_dwNumNamespaces > 0);
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}
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else
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{
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return (m_dwNumNamespaces == 0);
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}
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}
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BOOL ParsedObjectPath::AddNamespace(LPCWSTR wszNamespace)
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{
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if(m_dwNumNamespaces == m_dwAllocNamespaces)
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{
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DWORD dwNewAllocNamespaces = m_dwAllocNamespaces * 2;
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LPWSTR* paNewNamespaces = new LPWSTR[dwNewAllocNamespaces];
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if(paNewNamespaces == NULL) return FALSE;
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memcpy(paNewNamespaces, m_paNamespaces,
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sizeof(LPWSTR) * m_dwAllocNamespaces);
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delete [] m_paNamespaces;
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m_paNamespaces = paNewNamespaces;
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m_dwAllocNamespaces = dwNewAllocNamespaces;
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}
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m_paNamespaces[m_dwNumNamespaces++] = Macro_CloneLPWSTR(wszNamespace);
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return TRUE;
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}
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BOOL ParsedObjectPath::AddKeyRefEx(LPCWSTR wszKeyName, const VARIANT* pvValue )
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{
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BOOL bStatus = TRUE ;
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BOOL bFound = FALSE ;
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BOOL bUnNamed = FALSE ;
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for ( ULONG dwIndex = 0 ; dwIndex < m_dwNumKeys ; dwIndex ++ )
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{
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if ( ( m_paKeys [ dwIndex ]->m_pName ) && wszKeyName )
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{
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if ( _wcsicmp ( m_paKeys [ dwIndex ]->m_pName , wszKeyName )
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== 0 )
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{
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bFound = TRUE ;
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break ;
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}
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}
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else
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{
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if ( ( ( m_paKeys [ dwIndex ]->m_pName ) == 0 ) )
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{
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bUnNamed = TRUE ;
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if ( ( wszKeyName == 0 ) )
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{
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bFound = TRUE ;
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break ;
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}
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}
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}
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}
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if ( ! wszKeyName )
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{
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/* Remove all existing keys */
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for ( ULONG dwDeleteIndex = 0 ; dwDeleteIndex < m_dwNumKeys ;
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dwDeleteIndex ++ )
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{
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delete ( m_paKeys [ dwDeleteIndex ]->m_pName ) ;
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m_paKeys [ dwDeleteIndex ]->m_pName = NULL ;
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VariantClear ( & ( m_paKeys [ dwDeleteIndex ]->m_vValue ) ) ;
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}
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VariantCopy ( & ( m_paKeys [ 0 ]->m_vValue ) , ( VARIANT * ) pvValue );
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m_dwNumKeys = 1 ;
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}
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else
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{
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if ( bFound )
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{
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/*
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* If key already exists then just replace the value
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*/
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if ( wszKeyName )
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{
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m_paKeys [ dwIndex ]->m_pName =
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new wchar_t [ wcslen ( wszKeyName ) + 1 ] ;
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if (!(m_paKeys[dwIndex]->m_pName))
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{
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return FALSE;
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}
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wcscpy ( m_paKeys [ dwIndex ]->m_pName , wszKeyName ) ;
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}
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VariantClear ( & ( m_paKeys [ dwIndex ]->m_vValue ) ) ;
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VariantCopy ( & ( m_paKeys [ dwIndex ]->m_vValue ) ,
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( VARIANT * ) pvValue ) ;
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}
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else
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{
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if ( bUnNamed )
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{
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/* Add an un named key */
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for ( ULONG dwDeleteIndex = 0 ; dwDeleteIndex < m_dwNumKeys ;
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dwDeleteIndex ++ )
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{
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delete ( m_paKeys [ dwDeleteIndex ]->m_pName ) ;
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m_paKeys [ dwDeleteIndex ]->m_pName = NULL ;
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VariantClear (& ( m_paKeys [ dwDeleteIndex ]->m_vValue ) );
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}
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m_paKeys [ 0 ]->m_pName =
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new wchar_t [ wcslen ( wszKeyName ) + 1 ] ;
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if (!(m_paKeys[0]->m_pName))
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{
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return FALSE;
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}
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wcscpy ( m_paKeys [ 0 ]->m_pName , wszKeyName ) ;
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VariantCopy ( & ( m_paKeys [ 0 ]->m_vValue ) ,
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( VARIANT * ) pvValue ) ;
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m_dwNumKeys = 1 ;
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}
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else
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{
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/* Add a Named Key */
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AddKeyRef(wszKeyName, pvValue);
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}
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}
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}
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return bStatus;
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}
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void ParsedObjectPath::ClearKeys ()
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{
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for ( ULONG dwDeleteIndex = 0 ; dwDeleteIndex < m_dwNumKeys ;
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dwDeleteIndex ++ )
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{
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delete m_paKeys [ dwDeleteIndex ] ;
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m_paKeys [ dwDeleteIndex ] = NULL ;
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}
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delete [] m_paKeys ;
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m_paKeys = NULL ;
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m_dwNumKeys = 0; // 0 if no keys (just a class name)
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m_paKeys = new KeyRef *[2];
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if (m_paKeys)
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m_dwAllocKeys = 2;
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}
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BOOL ParsedObjectPath::AddKeyRef(LPCWSTR wszKeyName, const VARIANT* pvValue)
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{
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if(m_dwNumKeys == m_dwAllocKeys)
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{
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DWORD dwNewAllocKeys = m_dwAllocKeys * 2;
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KeyRef** paNewKeys = new KeyRef*[dwNewAllocKeys];
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if (!paNewKeys)
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return FALSE;
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memcpy(paNewKeys, m_paKeys, sizeof(KeyRef*) * m_dwAllocKeys);
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delete [] m_paKeys;
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m_paKeys = paNewKeys;
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m_dwAllocKeys = dwNewAllocKeys;
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}
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if(m_paKeys == NULL)
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return FALSE;
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m_paKeys[m_dwNumKeys] = new KeyRef(wszKeyName, pvValue);
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if (!m_paKeys[m_dwNumKeys])
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return FALSE;
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m_dwNumKeys++;
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return TRUE;
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}
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BOOL ParsedObjectPath::AddKeyRef(KeyRef* pAcquireRef)
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{
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if(m_dwNumKeys == m_dwAllocKeys)
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{
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DWORD dwNewAllocKeys = m_dwAllocKeys * 2;
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KeyRef** paNewKeys = new KeyRef*[dwNewAllocKeys];
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if(paNewKeys == NULL)return FALSE;
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memcpy(paNewKeys, m_paKeys, sizeof(KeyRef*) * m_dwAllocKeys);
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delete [] m_paKeys;
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m_paKeys = paNewKeys;
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m_dwAllocKeys = dwNewAllocKeys;
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}
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m_paKeys[m_dwNumKeys] = pAcquireRef;
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m_dwNumKeys++;
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return TRUE;
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}
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KeyRef::KeyRef()
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{
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m_pName = 0;
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VariantInit(&m_vValue);
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}
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KeyRef::KeyRef(LPCWSTR wszKeyName, const VARIANT* pvValue)
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{
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m_pName = Macro_CloneLPWSTR(wszKeyName);
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VariantInit(&m_vValue);
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VariantCopy(&m_vValue, (VARIANT*)pvValue);
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}
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KeyRef::~KeyRef()
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{
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if (m_pName)
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{
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delete m_pName;
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}
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VariantClear(&m_vValue);
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}
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int WINAPI CObjectPathParser::Unparse(
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ParsedObjectPath* pInput,
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DELETE_ME LPWSTR* pwszPath)
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{
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if(pInput->m_pClass == NULL)
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{
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return CObjectPathParser::InvalidParameter;
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}
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// Allocate enough space
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// =====================
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int nSpace = wcslen(pInput->m_pClass);
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nSpace += 10;
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DWORD dwIx;
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for (dwIx = 0; dwIx < pInput->m_dwNumKeys; dwIx++)
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{
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KeyRef* pKey = pInput->m_paKeys[dwIx];
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if(pKey->m_pName)
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nSpace += wcslen(pKey->m_pName);
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if(V_VT(&pKey->m_vValue) == VT_BSTR)
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{
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nSpace += wcslen(V_BSTR(&pKey->m_vValue))*2 + 10;
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}
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else if( V_VT(&pKey->m_vValue) == VT_I4
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|| V_VT(&pKey->m_vValue) == VT_UI4 )
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{
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nSpace += 30;
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}
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else if ( V_VT(&pKey->m_vValue) == VT_I2
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|| V_VT(&pKey->m_vValue) == VT_UI2 )
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{
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nSpace += 15;
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}
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else if ( V_VT(&pKey->m_vValue) == VT_I1
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|| V_VT(&pKey->m_vValue) == VT_UI1 )
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{
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nSpace += 8;
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}
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}
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if(pInput->m_bSingletonObj)
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nSpace +=2;
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WCHAR wszTemp[30];
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LPWSTR wszPath = new WCHAR[nSpace];
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if (!wszPath)
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return OutOfMemory;
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wcscpy(wszPath, pInput->m_pClass);
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for (dwIx = 0; dwIx < pInput->m_dwNumKeys; dwIx++)
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{
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KeyRef* pKey = pInput->m_paKeys[dwIx];
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// We dont want to put a '.' if there isnt a key name,
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// for example, Myclass="value"
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if(dwIx == 0)
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{
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if((pKey->m_pName && (0 < wcslen(pKey->m_pName))) || pInput->m_dwNumKeys > 1)
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wcscat(wszPath, L".");
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}
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else
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{
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wcscat(wszPath, L",");
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}
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if(pKey->m_pName)
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wcscat(wszPath, pKey->m_pName);
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wcscat(wszPath, L"=");
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if(V_VT(&pKey->m_vValue) == VT_BSTR)
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{
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wcscat(wszPath, L"\"");
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WCHAR* pwc = V_BSTR(&pKey->m_vValue);
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WCHAR str[2];
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str[1] = 0;
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while(*pwc)
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{
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if(*pwc == '\\' || *pwc == '"')
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{
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wcscat(wszPath, L"\\");
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}
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str[0] = *pwc;
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wcscat(wszPath, str);
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pwc++;
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}
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wcscat(wszPath, L"\"");
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}
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else if( V_VT(&pKey->m_vValue) == VT_I4 )
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{
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swprintf(wszTemp, L"%d", V_I4(&pKey->m_vValue));
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wcscat(wszPath, wszTemp);
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}
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else if( V_VT(&pKey->m_vValue) == VT_UI4 )
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{
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swprintf(wszTemp, L"%u", V_UI4(&pKey->m_vValue));
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wcscat(wszPath, wszTemp);
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}
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else if( V_VT(&pKey->m_vValue) == VT_I2 )
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{
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swprintf(wszTemp, L"%hd", V_I2(&pKey->m_vValue));
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wcscat(wszPath, wszTemp);
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}
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else if( V_VT(&pKey->m_vValue) == VT_UI2 )
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{
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swprintf(wszTemp, L"%hu", V_UI2(&pKey->m_vValue));
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wcscat(wszPath, wszTemp);
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}
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else if( V_VT(&pKey->m_vValue) == VT_I1 )
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{
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swprintf(wszTemp, L"%d", V_I1(&pKey->m_vValue));
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wcscat(wszPath, wszTemp);
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}
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else if( V_VT(&pKey->m_vValue) == VT_UI1 )
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{
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swprintf(wszTemp, L"%u", V_UI1(&pKey->m_vValue));
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wcscat(wszPath, wszTemp);
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}
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}
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// Take care of the singleton case. This is a path of the form
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// MyClass=@ and represents a single instance of a class with no
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// keys.
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if(pInput->m_bSingletonObj && pInput->m_dwNumKeys == 0)
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wcscat(wszPath, L"=@");
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*pwszPath = wszPath;
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return NoError;
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}
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LPWSTR WINAPI CObjectPathParser::GetRelativePath(LPWSTR wszFullPath)
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{
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LPWSTR wsz = wcschr(wszFullPath, L':');
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if(wsz)
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return wsz + 1;
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else
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return NULL;
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}
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void CObjectPathParser::Zero()
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{
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m_nCurrentToken = 0;
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m_pLexer = 0;
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m_pInitialIdent = 0;
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m_pOutput = 0;
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m_pTmpKeyRef = 0;
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}
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CObjectPathParser::CObjectPathParser(ObjectParserFlags eFlags)
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: m_eFlags(eFlags)
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{
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Zero();
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}
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void CObjectPathParser::Empty()
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{
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delete m_pLexer;
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delete m_pInitialIdent;
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delete m_pTmpKeyRef;
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// m_pOutput is intentionally left alone,
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// since all code paths delete this already on error, or
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// else the user acquired the pointer.
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}
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CObjectPathParser::~CObjectPathParser()
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{
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Empty();
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}
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int CObjectPathParser::Parse(
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LPCWSTR pRawPath,
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ParsedObjectPath **pOutput
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)
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{
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if (pOutput == 0 || pRawPath == 0 || wcslen(pRawPath) == 0)
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return CObjectPathParser::InvalidParameter;
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// Check for leading / trailing ws.
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// ================================
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if (iswspace(pRawPath[wcslen(pRawPath)-1]) || iswspace(pRawPath[0]))
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return InvalidParameter;
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// These are required for multiple calls to Parse().
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// ==================================================
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Empty();
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Zero();
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// Set default return to NULL initially until we have some output.
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// ===============================================================
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*pOutput = 0;
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m_pOutput = new ParsedObjectPath;
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if (!m_pOutput)
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return OutOfMemory;
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|
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// Parse the server name (if there is one) manually
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// ================================================
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if ( (pRawPath[0] == '\\' && pRawPath[1] == '\\') ||
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(pRawPath[0] == '/' && pRawPath[1] == '/'))
|
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{
|
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const WCHAR* pwcStart = pRawPath + 2;
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|
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// Find the next backslash --- it's the end of the server name
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|
// ===========================================================
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const WCHAR* pwcEnd = pwcStart;
|
|
while (*pwcEnd != L'\0' && *pwcEnd != L'\\' && *pwcEnd != L'/')
|
|
{
|
|
pwcEnd++;
|
|
}
|
|
|
|
if (*pwcEnd == L'\0')
|
|
{
|
|
// If we have already exhausted the object path string,
|
|
// a lone server name was all there was.
|
|
// ====================================================
|
|
|
|
if (m_eFlags != e_ParserAcceptAll)
|
|
{
|
|
delete m_pOutput;
|
|
return SyntaxError;
|
|
}
|
|
else // A lone server name is legal.
|
|
{
|
|
m_pOutput->m_pServer = new WCHAR[wcslen(pwcStart)+1];
|
|
|
|
if (!m_pOutput->m_pServer)
|
|
{
|
|
delete m_pOutput;
|
|
return OutOfMemory;
|
|
}
|
|
|
|
wcscpy(m_pOutput->m_pServer, pwcStart);
|
|
|
|
*pOutput = m_pOutput;
|
|
m_pOutput = 0;
|
|
|
|
return NoError;
|
|
}
|
|
}
|
|
|
|
if (pwcEnd == pwcStart)
|
|
{
|
|
// No name at all.
|
|
// ===============
|
|
delete m_pOutput;
|
|
return SyntaxError;
|
|
}
|
|
|
|
m_pOutput->m_pServer = new WCHAR[pwcEnd-pwcStart+1];
|
|
if (!m_pOutput->m_pServer)
|
|
{
|
|
delete m_pOutput;
|
|
return OutOfMemory;
|
|
}
|
|
|
|
wcsncpy(m_pOutput->m_pServer, pwcStart, pwcEnd-pwcStart);
|
|
m_pOutput->m_pServer[pwcEnd-pwcStart] = 0;
|
|
|
|
pRawPath = pwcEnd;
|
|
}
|
|
|
|
// Point the lexer at the source.
|
|
// ==============================
|
|
|
|
CTextLexSource src(pRawPath);
|
|
m_pLexer = new CGenLexer(OPath_LexTable, &src);
|
|
if (!m_pLexer)
|
|
{
|
|
delete m_pOutput;
|
|
return OutOfMemory;
|
|
}
|
|
|
|
// Go.
|
|
// ===
|
|
|
|
int nRes = begin_parse();
|
|
if (nRes)
|
|
{
|
|
delete m_pOutput;
|
|
return nRes;
|
|
}
|
|
|
|
if (m_nCurrentToken != OPATH_TOK_EOF)
|
|
{
|
|
delete m_pOutput;
|
|
return SyntaxError;
|
|
}
|
|
|
|
if (m_pOutput->m_dwNumNamespaces > 0 && m_pOutput->m_pServer == NULL)
|
|
{
|
|
if (m_eFlags != e_ParserAcceptRelativeNamespace && m_eFlags != e_ParserAcceptAll)
|
|
{
|
|
delete m_pOutput;
|
|
return SyntaxError;
|
|
}
|
|
else
|
|
{
|
|
// Local namespace --- set server to "."
|
|
// =====================================
|
|
m_pOutput->m_pServer = new WCHAR[2];
|
|
if (!m_pOutput->m_pServer)
|
|
{
|
|
delete m_pOutput;
|
|
return OutOfMemory;
|
|
}
|
|
|
|
wcscpy(m_pOutput->m_pServer, L".");
|
|
}
|
|
}
|
|
|
|
// Sort the key refs lexically. If there is only
|
|
// one key, there is nothing to sort anyway.
|
|
// =============================================
|
|
|
|
if (m_pOutput->m_dwNumKeys > 1)
|
|
{
|
|
BOOL bChanges = TRUE;
|
|
while (bChanges)
|
|
{
|
|
bChanges = FALSE;
|
|
for (DWORD dwIx = 0; dwIx < m_pOutput->m_dwNumKeys - 1; dwIx++)
|
|
{
|
|
if (_wcsicmp(m_pOutput->m_paKeys[dwIx]->m_pName,
|
|
m_pOutput->m_paKeys[dwIx+1]->m_pName) > 0)
|
|
{
|
|
KeyRef *pTmp = m_pOutput->m_paKeys[dwIx];
|
|
m_pOutput->m_paKeys[dwIx] = m_pOutput->m_paKeys[dwIx + 1];
|
|
m_pOutput->m_paKeys[dwIx + 1] = pTmp;
|
|
bChanges = TRUE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// Add in key refs.
|
|
// ================
|
|
*pOutput = m_pOutput;
|
|
m_pOutput = 0;
|
|
return NoError;
|
|
}
|
|
|
|
BOOL CObjectPathParser::NextToken()
|
|
{
|
|
m_nCurrentToken = m_pLexer->NextToken();
|
|
if (m_nCurrentToken == OPATH_TOK_ERROR)
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
void CObjectPathParser::Free(ParsedObjectPath *pOutput)
|
|
{
|
|
delete pOutput;
|
|
}
|
|
|
|
void CObjectPathParser::Free( LPWSTR wszUnparsedPath )
|
|
{
|
|
delete wszUnparsedPath;
|
|
}
|
|
|
|
//
|
|
// <Parse> ::= BACKSLASH <ns_or_server>;
|
|
// <Parse> ::= IDENT <ns_or_class>;
|
|
// <Parse> ::= COLON <objref>;
|
|
//
|
|
int CObjectPathParser::begin_parse()
|
|
{
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
|
|
if (m_nCurrentToken == OPATH_TOK_BACKSLASH)
|
|
{
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
return ns_or_server();
|
|
}
|
|
else if (m_nCurrentToken == OPATH_TOK_IDENT)
|
|
{
|
|
m_pInitialIdent = Macro_CloneLPWSTR(m_pLexer->GetTokenText());
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
|
|
// Copy the token and put it in a temporary holding place
|
|
// until we figure out whether it is a namespace or a class name.
|
|
// ==============================================================
|
|
|
|
return ns_or_class();
|
|
}
|
|
else if (m_nCurrentToken == OPATH_TOK_COLON)
|
|
{
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
return objref();
|
|
}
|
|
|
|
// If here, we had a bad starter token.
|
|
// ====================================
|
|
|
|
return SyntaxError;
|
|
}
|
|
|
|
//
|
|
// <ns_or_server> ::= BACKSLASH <dot_or_ident> BACKSLASH <ns_list> <optional_objref>;
|
|
// <ns_or_server> ::= <ns_list> <optional_objref>;
|
|
//
|
|
// <dot_or_ident> is embedded.
|
|
//
|
|
int CObjectPathParser::ns_or_server()
|
|
{
|
|
if (m_nCurrentToken == OPATH_TOK_BACKSLASH)
|
|
{
|
|
// Actually, server names have been take care of, so this is a failure
|
|
// ===================================================================
|
|
|
|
return SyntaxError;
|
|
}
|
|
else if (m_nCurrentToken == OPATH_TOK_IDENT)
|
|
{
|
|
int nRes = ns_list();
|
|
if (nRes)
|
|
return nRes;
|
|
return optional_objref();
|
|
}
|
|
else
|
|
if (m_nCurrentToken == OPATH_TOK_EOF)
|
|
return NoError;
|
|
|
|
return SyntaxError;
|
|
}
|
|
|
|
//
|
|
// <optional_objref> ::= COLON <objref>;
|
|
// <optional_objref> ::= <>;
|
|
//
|
|
int CObjectPathParser::optional_objref()
|
|
{
|
|
if (m_nCurrentToken == OPATH_TOK_EOF)
|
|
return NoError;
|
|
|
|
if (m_nCurrentToken != OPATH_TOK_COLON)
|
|
return SyntaxError;
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
return objref();
|
|
}
|
|
|
|
|
|
//
|
|
// <ns_or_class> ::= COLON <ident_becomes_ns> <objref>;
|
|
// <ns_or_class> ::= BACKSLASH <ident_becomes_ns> <ns_list> COLON <objref>;
|
|
// <ns_or_class> ::= BACKSLASH <ident_becomes_ns> <ns_list>;
|
|
//
|
|
int CObjectPathParser::ns_or_class()
|
|
{
|
|
if (m_nCurrentToken == OPATH_TOK_COLON)
|
|
{
|
|
ident_becomes_ns();
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
return objref();
|
|
}
|
|
else if (m_nCurrentToken == OPATH_TOK_BACKSLASH)
|
|
{
|
|
ident_becomes_ns();
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
int nRes = ns_list();
|
|
if (nRes)
|
|
return nRes;
|
|
if (m_nCurrentToken == OPATH_TOK_EOF) // ns only
|
|
return NoError;
|
|
|
|
if (m_nCurrentToken != OPATH_TOK_COLON)
|
|
return SyntaxError;
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
return objref();
|
|
}
|
|
|
|
// Else
|
|
// ====
|
|
ident_becomes_class();
|
|
return objref_rest();
|
|
}
|
|
|
|
//
|
|
// <objref> ::= IDENT <objref_rest>; // IDENT is classname
|
|
//
|
|
int CObjectPathParser::objref()
|
|
{
|
|
if (m_nCurrentToken != OPATH_TOK_IDENT)
|
|
return SyntaxError;
|
|
|
|
m_pOutput->m_pClass = Macro_CloneLPWSTR(m_pLexer->GetTokenText());
|
|
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
|
|
return objref_rest();
|
|
}
|
|
|
|
//
|
|
// <ns_list> ::= IDENT <ns_list_rest>;
|
|
//
|
|
int CObjectPathParser::ns_list()
|
|
{
|
|
if (m_nCurrentToken == OPATH_TOK_IDENT)
|
|
{
|
|
m_pOutput->AddNamespace(m_pLexer->GetTokenText());
|
|
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
return ns_list_rest();
|
|
}
|
|
|
|
return SyntaxError;
|
|
}
|
|
|
|
//
|
|
// <ident_becomes_ns> ::= <>; // <initial_ident> becomes a namespace
|
|
//
|
|
int CObjectPathParser::ident_becomes_ns()
|
|
{
|
|
m_pOutput->AddNamespace(m_pInitialIdent);
|
|
|
|
delete m_pInitialIdent;
|
|
m_pInitialIdent = 0;
|
|
return NoError;
|
|
}
|
|
|
|
//
|
|
// <ident_becomes_class> ::= <>; // <initial_ident> becomes the class
|
|
//
|
|
int CObjectPathParser::ident_becomes_class()
|
|
{
|
|
m_pOutput->m_pClass = Macro_CloneLPWSTR(m_pInitialIdent);
|
|
delete m_pInitialIdent;
|
|
m_pInitialIdent = 0;
|
|
return NoError;
|
|
}
|
|
|
|
//
|
|
// <objref_rest> ::= EQUALS <key_const>;
|
|
// <objref_rest> ::= EQUALS *;
|
|
// <objref_rest> ::= DOT <keyref_list>;
|
|
// <objref_rest> ::= <>;
|
|
//
|
|
int CObjectPathParser::objref_rest()
|
|
{
|
|
if (m_nCurrentToken == OPATH_TOK_EQ)
|
|
{
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
|
|
// Take care of the singleton case. This is a path of the form
|
|
// MyClass=@ and represents a singleton instance of a class with no
|
|
// keys.
|
|
|
|
|
|
if(m_nCurrentToken == OPATH_TOK_SINGLETON_SYM)
|
|
{
|
|
if(NextToken() && m_nCurrentToken != OPATH_TOK_EOF)
|
|
return SyntaxError;
|
|
m_pOutput->m_bSingletonObj = TRUE;
|
|
return NoError;
|
|
|
|
}
|
|
|
|
m_pTmpKeyRef = new KeyRef;
|
|
if (!m_pTmpKeyRef)
|
|
return OutOfMemory;
|
|
|
|
int nRes = key_const();
|
|
if (nRes)
|
|
{
|
|
delete m_pTmpKeyRef;
|
|
m_pTmpKeyRef = 0;
|
|
return nRes;
|
|
}
|
|
|
|
m_pOutput->AddKeyRef(m_pTmpKeyRef);
|
|
m_pTmpKeyRef = 0;
|
|
}
|
|
else if (m_nCurrentToken == OPATH_TOK_DOT)
|
|
{
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
return keyref_list();
|
|
}
|
|
|
|
return NoError;
|
|
}
|
|
|
|
//
|
|
// <ns_list_rest> ::= BACKSLASH <ns_list>;
|
|
// <ns_list_rest> ::= <>;
|
|
//
|
|
int CObjectPathParser::ns_list_rest()
|
|
{
|
|
if (m_nCurrentToken == OPATH_TOK_BACKSLASH)
|
|
{
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
return ns_list();
|
|
}
|
|
return NoError;
|
|
}
|
|
|
|
//
|
|
// <key_const> ::= STRING_CONST;
|
|
// <key_const> ::= INTEGRAL_CONST;
|
|
// <key_const> ::= REAL_CONST;
|
|
// <key_const> ::= IDENT; // Where IDENT is "OBJECT" for singleton classes
|
|
//
|
|
int CObjectPathParser::key_const()
|
|
{
|
|
// If here, we have a key constant.
|
|
// We may or may not have the property name
|
|
// associated with it.
|
|
// ========================================
|
|
|
|
if (m_nCurrentToken == OPATH_TOK_QSTRING)
|
|
{
|
|
V_VT(&m_pTmpKeyRef->m_vValue) = VT_BSTR;
|
|
V_BSTR(&m_pTmpKeyRef->m_vValue) = SysAllocString(m_pLexer->GetTokenText());
|
|
}
|
|
else if (m_nCurrentToken == OPATH_TOK_INT)
|
|
{
|
|
V_VT(&m_pTmpKeyRef->m_vValue) = VT_I4;
|
|
char buf[32];
|
|
if(m_pLexer->GetTokenText() == NULL || wcslen(m_pLexer->GetTokenText()) > 31)
|
|
return SyntaxError;
|
|
sprintf(buf, "%S", m_pLexer->GetTokenText());
|
|
V_I4(&m_pTmpKeyRef->m_vValue) = atol(buf);
|
|
}
|
|
else if (m_nCurrentToken == OPATH_TOK_HEXINT)
|
|
{
|
|
V_VT(&m_pTmpKeyRef->m_vValue) = VT_I4;
|
|
char buf[32];
|
|
if(m_pLexer->GetTokenText() == NULL || wcslen(m_pLexer->GetTokenText()) > 31)
|
|
return SyntaxError;
|
|
sprintf(buf, "%S", m_pLexer->GetTokenText());
|
|
long l;
|
|
sscanf(buf, "%x", &l);
|
|
V_I4(&m_pTmpKeyRef->m_vValue) = l;
|
|
}
|
|
else if (m_nCurrentToken == OPATH_TOK_IDENT)
|
|
{
|
|
if (_wcsicmp(m_pLexer->GetTokenText(), L"TRUE") == 0)
|
|
{
|
|
V_VT(&m_pTmpKeyRef->m_vValue) = VT_I4;
|
|
V_I4(&m_pTmpKeyRef->m_vValue) = 1;
|
|
}
|
|
else if (_wcsicmp(m_pLexer->GetTokenText(), L"FALSE") == 0)
|
|
{
|
|
V_VT(&m_pTmpKeyRef->m_vValue) = VT_I4;
|
|
V_I4(&m_pTmpKeyRef->m_vValue) = 0;
|
|
}
|
|
else
|
|
return SyntaxError;
|
|
}
|
|
else return SyntaxError;
|
|
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
|
|
return NoError;
|
|
}
|
|
|
|
//
|
|
// <keyref_list> ::= <keyref> <keyref_term>;
|
|
//
|
|
int CObjectPathParser::keyref_list()
|
|
{
|
|
int nRes = keyref();
|
|
if (nRes)
|
|
return nRes;
|
|
return keyref_term();
|
|
}
|
|
|
|
//
|
|
// <keyref> ::= <propname> EQUALS <key_const>;
|
|
//
|
|
int CObjectPathParser::keyref()
|
|
{
|
|
m_pTmpKeyRef = new KeyRef;
|
|
|
|
if (!m_pTmpKeyRef)
|
|
return OutOfMemory;
|
|
|
|
int nRes = propname();
|
|
|
|
if (nRes)
|
|
{
|
|
delete m_pTmpKeyRef;
|
|
m_pTmpKeyRef = 0;
|
|
return nRes;
|
|
}
|
|
|
|
if (m_nCurrentToken != OPATH_TOK_EQ)
|
|
{
|
|
delete m_pTmpKeyRef;
|
|
m_pTmpKeyRef = 0;
|
|
return SyntaxError;
|
|
}
|
|
|
|
if (!NextToken())
|
|
{
|
|
delete m_pTmpKeyRef;
|
|
m_pTmpKeyRef = 0;
|
|
return SyntaxError;
|
|
}
|
|
|
|
nRes = key_const();
|
|
if (nRes)
|
|
{
|
|
delete m_pTmpKeyRef;
|
|
m_pTmpKeyRef = 0;
|
|
return nRes;
|
|
}
|
|
|
|
m_pOutput->AddKeyRef(m_pTmpKeyRef);
|
|
m_pTmpKeyRef = 0;
|
|
|
|
return NoError;
|
|
}
|
|
|
|
//
|
|
// <keyref_term> ::= COMMA <keyref_list>; // Used for compound keys
|
|
// <keyref_term> ::= <>;
|
|
//
|
|
int CObjectPathParser::keyref_term()
|
|
{
|
|
if (m_nCurrentToken == OPATH_TOK_COMMA)
|
|
{
|
|
if (!NextToken())
|
|
return SyntaxError;
|
|
return keyref_list();
|
|
}
|
|
|
|
return NoError;
|
|
}
|
|
|
|
//
|
|
// <propname> ::= IDENT;
|
|
//
|
|
int CObjectPathParser::propname()
|
|
{
|
|
if (m_nCurrentToken != OPATH_TOK_IDENT)
|
|
return SyntaxError;
|
|
|
|
m_pTmpKeyRef->m_pName = Macro_CloneLPWSTR(m_pLexer->GetTokenText());
|
|
|
|
if (!NextToken())
|
|
{
|
|
delete m_pTmpKeyRef;
|
|
m_pTmpKeyRef = 0;
|
|
return SyntaxError;
|
|
}
|
|
|
|
return NoError;
|
|
}
|
|
|
|
//***************************************************************************
|
|
//
|
|
// ParsedObjectPath::GetKeyString
|
|
//
|
|
// Returns the db-engine compatible key string for the object.
|
|
// The format will likely change after the Alpha PDK Release.
|
|
//
|
|
// Return value:
|
|
// NULL on error or for pure classes. Otherwise returns a pointer to
|
|
// a newly allocated string which must be deallocated with operator
|
|
// delete.
|
|
//
|
|
//***************************************************************************
|
|
LPWSTR ParsedObjectPath::GetKeyString()
|
|
{
|
|
if (m_dwNumKeys == 0 && !m_bSingletonObj)
|
|
{
|
|
if (m_pClass == 0 || wcslen(m_pClass) == 0)
|
|
return 0;
|
|
|
|
LPWSTR pTmp = new wchar_t[wcslen(m_pClass) + 1];
|
|
|
|
if (pTmp)
|
|
wcscpy(pTmp, m_pClass);
|
|
|
|
return pTmp;
|
|
}
|
|
|
|
// Allocate enough space
|
|
// =====================
|
|
|
|
int nSpace = 10;
|
|
DWORD dwIx;
|
|
for (dwIx = 0; dwIx < m_dwNumKeys; dwIx++)
|
|
{
|
|
KeyRef* pKey = m_paKeys[dwIx];
|
|
nSpace += 2; // for the |
|
|
if(V_VT(&pKey->m_vValue) == VT_BSTR)
|
|
{
|
|
nSpace += wcslen(V_BSTR(&pKey->m_vValue))*2 + 10;
|
|
}
|
|
else if(V_VT(&pKey->m_vValue) == VT_I4)
|
|
{
|
|
nSpace += 30;
|
|
}
|
|
}
|
|
if(m_bSingletonObj)
|
|
nSpace +=20;
|
|
|
|
|
|
LPWSTR pRetVal = new wchar_t[nSpace];
|
|
wchar_t Tmp[32];
|
|
long nVal;
|
|
|
|
if (!pRetVal)
|
|
return NULL;
|
|
|
|
*pRetVal = 0;
|
|
BOOL bFirst = TRUE;
|
|
|
|
// The key are already sorted lexically.
|
|
// =====================================
|
|
|
|
WCHAR wszSeparator[2];
|
|
wszSeparator[0] = 0xFFFF;
|
|
wszSeparator[1] = 0;
|
|
|
|
for (DWORD i = 0; i < m_dwNumKeys; i++)
|
|
{
|
|
if (!bFirst)
|
|
wcscat(pRetVal, wszSeparator);
|
|
bFirst = FALSE;
|
|
|
|
KeyRef *pKeyRef = m_paKeys[i];
|
|
VARIANT *pv = &pKeyRef->m_vValue;
|
|
|
|
int nType = V_VT(pv);
|
|
switch (nType)
|
|
{
|
|
case VT_LPWSTR:
|
|
case VT_BSTR:
|
|
wcscat(pRetVal, V_BSTR(pv));
|
|
break;
|
|
|
|
case VT_I4:
|
|
nVal = V_I4(pv);
|
|
swprintf(Tmp, L"%d", nVal);
|
|
wcscat(pRetVal, Tmp);
|
|
break;
|
|
|
|
case VT_I2:
|
|
nVal = V_I2(pv);
|
|
swprintf(Tmp, L"%d", nVal);
|
|
wcscat(pRetVal, Tmp);
|
|
break;
|
|
|
|
case VT_UI1:
|
|
nVal = V_UI1(pv);
|
|
swprintf(Tmp, L"%d", nVal);
|
|
wcscat(pRetVal, Tmp);
|
|
break;
|
|
|
|
case VT_BOOL:
|
|
nVal = V_BOOL(pv);
|
|
swprintf(Tmp, L"%d", (nVal?1:0));
|
|
wcscat(pRetVal, Tmp);
|
|
break;
|
|
|
|
default:
|
|
wcscat(pRetVal, L"NULL");
|
|
}
|
|
}
|
|
|
|
if (wcslen(pRetVal) == 0)
|
|
{
|
|
if(m_bSingletonObj)
|
|
{
|
|
wcscpy(pRetVal, L"@");
|
|
}
|
|
}
|
|
return pRetVal; // This may not be NULL
|
|
}
|
|
|
|
LPWSTR ParsedObjectPath::GetNamespacePart()
|
|
{
|
|
if (m_dwNumNamespaces == 0)
|
|
return NULL;
|
|
|
|
// Compute necessary space
|
|
// =======================
|
|
|
|
int nSpace = 0;
|
|
for(DWORD i = 0; i < m_dwNumNamespaces; i++)
|
|
nSpace += 1 + wcslen(m_paNamespaces[i]);
|
|
nSpace--;
|
|
|
|
// Allocate buffer
|
|
// ===============
|
|
|
|
LPWSTR wszOut = new wchar_t[nSpace + 1];
|
|
|
|
if (!wszOut)
|
|
return NULL;
|
|
|
|
*wszOut = 0;
|
|
|
|
// Output
|
|
// ======
|
|
|
|
for(i = 0; i < m_dwNumNamespaces; i++)
|
|
{
|
|
if(i != 0) wcscat(wszOut, L"\\");
|
|
wcscat(wszOut, m_paNamespaces[i]);
|
|
}
|
|
|
|
return wszOut;
|
|
}
|
|
|
|
LPWSTR ParsedObjectPath::GetParentNamespacePart()
|
|
{
|
|
if(m_dwNumNamespaces < 2)
|
|
return NULL;
|
|
|
|
// Compute necessary space
|
|
// =======================
|
|
|
|
int nSpace = 0;
|
|
for(DWORD i = 0; i < m_dwNumNamespaces - 1; i++)
|
|
nSpace += 1 + wcslen(m_paNamespaces[i]);
|
|
nSpace--;
|
|
|
|
// Allocate buffer
|
|
// ===============
|
|
|
|
LPWSTR wszOut = new wchar_t[nSpace + 1];
|
|
if(wszOut == NULL)return NULL;
|
|
*wszOut = 0;
|
|
|
|
// Output
|
|
// ======
|
|
|
|
for(i = 0; i < m_dwNumNamespaces - 1; i++)
|
|
{
|
|
if(i != 0) wcscat(wszOut, L"\\");
|
|
wcscat(wszOut, m_paNamespaces[i]);
|
|
}
|
|
|
|
return wszOut;
|
|
}
|
|
|
|
BOOL ParsedObjectPath::IsRelative(LPCWSTR wszMachine, LPCWSTR wszNamespace)
|
|
{
|
|
if(!IsLocal(wszMachine))
|
|
return FALSE;
|
|
|
|
if(m_dwNumNamespaces == 0)
|
|
return TRUE;
|
|
|
|
LPWSTR wszCopy = new wchar_t[wcslen(wszNamespace) + 1];
|
|
if(wszCopy == NULL)return FALSE;
|
|
wcscpy(wszCopy, wszNamespace);
|
|
LPWSTR wszLeft = wszCopy;
|
|
BOOL bFailed = FALSE;
|
|
for(DWORD i = 0; i < m_dwNumNamespaces; i++)
|
|
{
|
|
unsigned int nLen = wcslen(m_paNamespaces[i]);
|
|
if(nLen > wcslen(wszLeft))
|
|
{
|
|
bFailed = TRUE;
|
|
break;
|
|
}
|
|
if(i == m_dwNumNamespaces - 1 && wszLeft[nLen] != 0)
|
|
{
|
|
bFailed = TRUE;
|
|
break;
|
|
}
|
|
if(i != m_dwNumNamespaces - 1 && wszLeft[nLen] != L'\\')
|
|
{
|
|
bFailed = TRUE;
|
|
break;
|
|
}
|
|
|
|
wszLeft[nLen] = 0;
|
|
if(_wcsicmp(wszLeft, m_paNamespaces[i]))
|
|
{
|
|
bFailed = TRUE;
|
|
break;
|
|
}
|
|
wszLeft += nLen+1;
|
|
}
|
|
delete [] wszCopy;
|
|
return !bFailed;
|
|
}
|
|
|
|
BOOL ParsedObjectPath::IsLocal(LPCWSTR wszMachine)
|
|
{
|
|
return (m_pServer == NULL || !_wcsicmp(m_pServer, L".") ||
|
|
!_wcsicmp(m_pServer, wszMachine));
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////
|
|
//
|
|
// Test object path parser by parsing all objects
|
|
// in the input file (one object path per line).
|
|
//
|
|
////////////////////////////////////////////////////////
|
|
|
|
#ifdef TEST
|
|
void xmain(int argc, char **argv)
|
|
{
|
|
printf("Object Path Test\n");
|
|
if (argc < 2 || strchr(argv[1], '?') != NULL)
|
|
{
|
|
printf("Usage: objpath input-file\n");
|
|
return;
|
|
}
|
|
|
|
int nLine = 1;
|
|
char buf[2048];
|
|
FILE *f = fopen(argv[1], "rt");
|
|
if (f == NULL)
|
|
{
|
|
printf("Usage: objpath input-file\nError: cannot open file %s!\n", argv[1]);
|
|
return;
|
|
}
|
|
|
|
while (fgets(buf, 2048, f) != NULL)
|
|
{
|
|
// Get rid of newline and trailing spaces.
|
|
// =======================================
|
|
|
|
char* ptr = strchr(buf, '\n');
|
|
if (ptr != NULL)
|
|
{
|
|
*ptr = ' ';
|
|
while (ptr >= buf && *ptr == ' ')
|
|
{
|
|
*ptr = '\0';
|
|
ptr--;
|
|
}
|
|
}
|
|
|
|
// Get rid of leading spaces.
|
|
// ==========================
|
|
|
|
ptr = buf;
|
|
while (*ptr == ' ')
|
|
{
|
|
ptr++;
|
|
}
|
|
|
|
// Convert to wide char and parse. Ignore blank lines.
|
|
// ====================================================
|
|
|
|
if (*ptr != '\0')
|
|
{
|
|
wchar_t buf2[2048];
|
|
MultiByteToWideChar(CP_ACP, 0, ptr, -1, buf2, 2048);
|
|
|
|
printf("----Object path----\n");
|
|
printf("%S\n", buf2);
|
|
|
|
ParsedObjectPath* pOutput = 0;
|
|
CObjectPathParser p(e_ParserAcceptAll);
|
|
int nStatus = p.Parse(buf2, &pOutput);
|
|
|
|
if (nStatus != 0)
|
|
{
|
|
printf("ERROR: return code is %d\n", nStatus);
|
|
continue;
|
|
}
|
|
printf("No errors.\n");
|
|
|
|
printf("------Output------\n");
|
|
|
|
LPWSTR pKey = pOutput->GetKeyString();
|
|
printf("Key String = <%S>\n", pKey);
|
|
delete pKey;
|
|
|
|
printf("Server = %S\n", pOutput->m_pServer);
|
|
printf("Namespace Part = %S\n", pOutput->GetNamespacePart());
|
|
printf("Parent Part = %S\n", pOutput->GetParentNamespacePart());
|
|
|
|
for (DWORD dwIx = 0; dwIx < pOutput->m_dwNumNamespaces; dwIx++)
|
|
{
|
|
printf("Namespace = <%S>\n", pOutput->m_paNamespaces[dwIx]);
|
|
}
|
|
|
|
printf("Class = <%S>\n", pOutput->m_pClass);
|
|
|
|
// If here, the key ref is complete.
|
|
// =================================
|
|
|
|
for (dwIx = 0; dwIx < pOutput->m_dwNumKeys; dwIx++)
|
|
{
|
|
KeyRef *pTmp = pOutput->m_paKeys[dwIx];
|
|
printf("*** KeyRef contents:\n");
|
|
printf(" Name = %S Value=", pTmp->m_pName);
|
|
switch (V_VT(&pTmp->m_vValue))
|
|
{
|
|
case VT_I4: printf("%d", V_I4(&pTmp->m_vValue)); break;
|
|
case VT_R8: printf("%f", V_R8(&pTmp->m_vValue)); break;
|
|
case VT_BSTR: printf("<%S>", V_BSTR(&pTmp->m_vValue)); break;
|
|
default:
|
|
printf("BAD KEY REF\n");
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
p.Free(pOutput);
|
|
}
|
|
}
|
|
}
|
|
|
|
void main(int argc, char **argv)
|
|
{
|
|
xmain(argc, argv);
|
|
}
|
|
|
|
#endif
|