396 lines
10 KiB
C++
396 lines
10 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Copyright (C) 1996 - 1997, Microsoft Corporation.
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//
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// File: whtmplat.hxx
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//
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// Contents: Parser for an webhits template file
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//
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// History: 96/Sep/8 SrikantsS Adapted from htx.hxx
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//
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//----------------------------------------------------------------------------
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#pragma once
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enum ENodeType
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{
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eNone = 0x0,
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eParameter = 0x1,
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eString = 0x2,
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eEscapeHTML = 0x6,
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eEscapeURL = 0x7,
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eEscapeRAW = 0x8,
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eParamOwnsVariantMemory = 0x00100000
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};
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const ULONG eJustParamMask = 0x0000ffff;
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const ULONG eParamMask = 0x0001FFFF;
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//+---------------------------------------------------------------------------
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//
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// Class: CWTXException
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//
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// Purpose: Exception class for the template errors.
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//
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// History: 9-09-96 srikants Created
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//
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//----------------------------------------------------------------------------
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class CWTXException : public CException
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{
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public:
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CWTXException( LONG lerror,
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WCHAR const * pwcsFileName,
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LONG iLineNum )
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: CException( lerror ),
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_iLineNum(iLineNum)
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{
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_wcsFileName[0] = 0;
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if ( 0 != pwcsFileName )
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{
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wcsncpy( _wcsFileName, pwcsFileName, MAX_PATH );
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_wcsFileName[MAX_PATH] = 0;
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}
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}
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WCHAR const * GetFileName() const { return _wcsFileName; }
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LONG GetLineNumber() const { return _iLineNum; }
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private:
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WCHAR _wcsFileName[MAX_PATH+1];
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LONG _iLineNum;
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};
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//+---------------------------------------------------------------------------
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//
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// Class: CWHVarSet
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//
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// Purpose: Webhits variables sets. This class will resolve the replaceable
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// parameters for webhits.
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//
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// History: 9-09-96 srikants Created
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//
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// Notes: As the number of repleacable parameters is very small, a
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// linear lookup is fine.
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//
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//----------------------------------------------------------------------------
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class CWHVarSet
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{
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enum { eMaxParams = 15 };
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public:
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CWHVarSet() : _count(0) {}
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BOOL GetStringValueHTML( WCHAR const * wcsName, CVirtualString & str, ULONG ulCodepage );
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BOOL GetStringValueURL( WCHAR const * wcsName, CVirtualString & str, ULONG ulCodepage );
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WCHAR const * GetStringValueRAW( WCHAR const * wcsName, ULONG & cwc )
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{
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WCHAR const * pwcsValue = Find( wcsName );
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if ( 0 != pwcsValue )
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cwc = wcslen( pwcsValue );
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return pwcsValue;
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}
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WCHAR const * Find( WCHAR const * wcsName )
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{
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for ( ULONG i = 0; i < _count; i++ )
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{
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if ( 0 == _wcsicmp( _aParamNames[i], wcsName ) )
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return _aParamValues[i];
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}
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return 0;
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}
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void AddParam( WCHAR const * pwcsName, WCHAR const * pwcsValue )
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{
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Win4Assert( _count <= eMaxParams );
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Win4Assert( 0 != pwcsName );
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Win4Assert( 0 != pwcsValue );
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if ( _count >= eMaxParams )
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THROW( CException( STATUS_INVALID_PARAMETER ) );
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_aParamNames[_count] = pwcsName;
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_aParamValues[_count++] = pwcsValue;
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}
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private:
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ULONG _count;
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WCHAR const * _aParamNames[eMaxParams];
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WCHAR const * _aParamValues[eMaxParams];
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};
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//+---------------------------------------------------------------------------
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//
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// Class: CWHParamNode
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//
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// Purpose: A parameter node for the replaceable parameters.
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//
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// History: 9-09-96 srikants Created
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//
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//----------------------------------------------------------------------------
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class CWHParamNode
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{
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friend class CWHParamNodeIter;
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public:
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CWHParamNode( WCHAR * ptr, ENodeType eType = eNone )
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:_eType(eType),
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_ptr(ptr),
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_pNext(0),
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_cwcString(0)
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{
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}
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~CWHParamNode();
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WCHAR const * String() const { return _ptr; }
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ULONG Type() const { return _eType; }
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ULONG Length()
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{
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if ( 0 == _cwcString )
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_cwcString = wcslen( _ptr );
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return _cwcString;
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}
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void SetNextNode( CWHParamNode * pNext ) { _pNext = pNext; }
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CWHParamNode * GetNextNode() const { return _pNext; }
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CWHParamNode * GetEndNode()
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{
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CWHParamNode *pEndNode = this;
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while ( 0 != pEndNode->GetNextNode() )
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{
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pEndNode = pEndNode->GetNextNode();
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}
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return pEndNode;
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}
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CWHParamNode * QueryNextNode()
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{
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CWHParamNode * pTemp = _pNext;
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_pNext = 0;
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return pTemp;
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}
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BOOL IsEmpty() const { return 0 == GetNextNode(); }
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private:
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ULONG _eType; // Type of node
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WCHAR * _ptr; // Ptr to string associated with node
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CWHParamNode * _pNext; // Next node
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ULONG _cwcString; // length of the string _ptr
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};
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//+---------------------------------------------------------------------------
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//
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// Class: CWHParamNodeIter
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//
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// Purpose: An iterator over the list of parameter nodes.
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//
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// History: 9-09-96 srikants Created
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//
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//----------------------------------------------------------------------------
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class CWHParamNodeIter
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{
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public:
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CWHParamNodeIter( CWHParamNode * pNode ) : _root(pNode) {}
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void Next()
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{
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Win4Assert( !AtEnd() );
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_root = _root->GetNextNode();
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}
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BOOL AtEnd() const { return 0 == _root; }
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CWHParamNode * Get() { return _root; }
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private:
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CWHParamNode * _root; // Root of the parameter list
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};
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class CWTXScanner;
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//+---------------------------------------------------------------------------
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//
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// Class: CWHParamReplacer
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//
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// Purpose: Parameter replacer for webhits replaceable parameters.
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//
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// History: 9-09-96 srikants Created
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//
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// Notes: Adapted from idq.dll
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//
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//----------------------------------------------------------------------------
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class CWHParamReplacer
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{
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public:
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CWHParamReplacer( WCHAR const * wcsString,
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WCHAR const * wcsPrefix,
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WCHAR const * wcsSuffix );
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~CWHParamReplacer()
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{
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delete _wcsString;
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}
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void ParseString( CWHVarSet & variableSet );
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void ReplaceParams( CVirtualString & strResult,
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CWHVarSet & variableSet,
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ULONG ulCodepage );
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ULONG GetFlags() const { return _ulFlags; }
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private:
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void BuildList( CWTXScanner & scanner, CWHParamNode * paramNode );
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WCHAR * _wcsString; // The string we've parsed
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WCHAR const * _wcsPrefix; // Deliminating prefix
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WCHAR const * _wcsSuffix; // Deliminating suffix
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ULONG _ulFlags; // Flags associated with replaced variables
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CWHParamNode _paramNode; // List of ptrs to replace params
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};
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//+---------------------------------------------------------------------------
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//
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// Class: CWTXScanner
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//
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// Purpose: Breaks up a string into a number of HTX tokens
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//
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// History: 96/Jan/23 DwightKr Created
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//
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//----------------------------------------------------------------------------
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class CWTXScanner
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{
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public:
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CWTXScanner( CWHVarSet & variableSet,
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WCHAR const * wcsPrefix,
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WCHAR const * wcsSuffix );
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void Init( WCHAR * wcsString );
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BOOL FindNextToken();
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BOOL IsToken(WCHAR * wcs);
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int TokenType() const { return _type; }
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WCHAR * GetToken();
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private:
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WCHAR * _wcsString; // String to parse
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WCHAR const * _wcsPrefix; // Token prefix delimiter
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WCHAR const * _wcsSuffix; // Token suffix delimiter
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WCHAR * _wcsPrefixToken; // Start of current token
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WCHAR * _wcsSuffixToken; // End of current token
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CWHVarSet & _variableSet; // List of replaceabe parameters
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// used to identify replaceable tokens
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unsigned _cchPrefix; // Length of the prefix delimiter
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unsigned _cchSuffix; // Length of the suffix delimiter
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WCHAR * _wcsNextToken; // Ptr to next token
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unsigned _type; // Type of current token
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unsigned _nextType; // Type of next token if not eNone
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};
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//+---------------------------------------------------------------------------
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//
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// Class: CWTXFile
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//
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// Purpose: Scans and parses an HTX file.
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//
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// History: 96/Jan/23 DwightKr Created
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//
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//----------------------------------------------------------------------------
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class CWTXFile
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{
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public:
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CWTXFile( WCHAR const * wcsTemplateName,
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WCHAR const * wcsPhysicalName,
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UINT codePage );
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~CWTXFile();
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void ParseFile( CWHVarSet & variableSet );
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BOOL DoesHeaderExist() const { return 0 != _pVarHeader; }
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void GetHeader( CVirtualString & string,
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CWHVarSet & variableSet );
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BOOL DoesFooterExist() const { return 0 != _pVarFooter; }
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void GetFooter( CVirtualString & string,
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CWHVarSet & variableSet );
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BOOL DoesDetailSectionExist() { return 0 != _pVarRowDetails; }
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void GetDetailSection( CVirtualString & string,
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CWHVarSet & variableSet )
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{
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Win4Assert( 0 != _pVarRowDetails );
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_pVarRowDetails->ReplaceParams( string, variableSet, _codePage );
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}
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WCHAR const * GetVirtualName() const { return _wcsVirtualName; }
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void GetFileNameAndLineNumber( int offset,
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WCHAR const *& wcsFileName,
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LONG & lineNumber );
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UINT GetCodePage() const { return _codePage; }
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private:
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WCHAR * ReadFile( WCHAR const * wcsFileName );
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LONG CountLines( WCHAR const * wcsStart, WCHAR const * wcsEnd ) const;
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WCHAR const * _wcsVirtualName; // Virtual name of HTX file
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WCHAR const * _wcsPhysicalName; // Physical name
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WCHAR * _wcsFileBuffer; // Contents of HTX file
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CWHParamReplacer * _pVarHeader; // Buffer containing HTX header
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CWHParamReplacer * _pVarRowDetails; // Buffer containing detail section
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CWHParamReplacer * _pVarFooter; // Buffer containing footer
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UINT _codePage; // Code page used to read this file
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};
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