1128 lines
20 KiB
C++
1128 lines
20 KiB
C++
/*
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* This module contains the definitions for the inline functions used by the
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* name undecorator. It is intended that this file should be included
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* somewhere in the source file for the undecorator to maximise the chance
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* that they will be truly inlined.
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*/
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// The following class is a special node class, used in the implementation
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// of the internal chaining mechanism of the 'DName's
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class charNode;
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class pcharNode;
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class pDNameNode;
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class DNameStatusNode;
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#if ( NO_VIRTUAL )
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enum NodeType
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{
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charNode_t,
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pcharNode_t,
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pDNameNode_t,
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DNameStatusNode_t
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};
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#endif // NO_VIRTUAL
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class DNameNode
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{
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private:
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#if NO_VIRTUAL
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NodeType typeIndex;
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#endif // NO_VIRTUAL
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DNameNode * next;
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protected:
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#if ( !NO_VIRTUAL )
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__near DNameNode ();
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#else // } elif NO_VIRTUAL {
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__near DNameNode ( NodeType );
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#endif // NO_VIRTUAL
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__near DNameNode ( const DNameNode & );
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public:
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virtual int __near length () const PURE;
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virtual pchar_t __near getString ( pchar_t, int ) const PURE;
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DNameNode * __near clone ();
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DNameNode * __near nextNode () const;
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DNameNode & __near operator += ( DNameNode * );
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};
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class charNode : public DNameNode
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{
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private:
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char me;
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public:
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__near charNode ( char );
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virtual int __near length () const;
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virtual pchar_t __near getString ( pchar_t, int ) const;
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};
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class pcharNode : public DNameNode
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{
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private:
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pchar_t me;
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int myLen;
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public:
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__near pcharNode ( pcchar_t, int = 0 );
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virtual int __near length () const;
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virtual pchar_t __near getString ( pchar_t, int ) const;
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};
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class pDNameNode : public DNameNode
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{
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private:
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DName * me;
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public:
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__near pDNameNode ( DName * );
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virtual int __near length () const;
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virtual pchar_t __near getString ( pchar_t, int ) const;
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};
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class DNameStatusNode : public DNameNode
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{
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private:
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#define TruncationMessage (" ?? ")
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#define TruncationMessageLength (4)
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DNameStatus me;
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int myLen;
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public:
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__near DNameStatusNode ( DNameStatus );
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virtual int __near length () const;
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virtual pchar_t __near getString ( pchar_t, int ) const;
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};
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// Memory allocation functions
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inline void __far * __near __pascal operator new ( unsigned int sz, HeapManager &, int noBuffer )
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{ return heap.getMemory ( sz, noBuffer ); }
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void __far * __near HeapManager::getMemory ( unsigned int sz, int noBuffer )
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{
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// Align the allocation on an appropriate boundary
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sz = (( sz + PACK_SIZE-1 ) & ~(PACK_SIZE-1) );
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if ( noBuffer )
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return ( *pOpNew )( sz );
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else
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{
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// Handler a potential request for no space
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if ( !sz )
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sz = 1;
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if ( blockLeft < sz )
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{
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// Is the request greater than the largest buffer size ?
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if ( sz > memBlockSize )
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return 0; // If it is, there is nothing we can do
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// Allocate a new block
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Block * pNewBlock = rnew Block;
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// Did the allocation succeed ? If so connect it up
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if ( pNewBlock )
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{
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// Handle the initial state
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if ( tail )
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tail = tail->next = pNewBlock;
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else
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head = tail = pNewBlock;
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// Compute the remaining space
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blockLeft = memBlockSize - sz;
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} // End of IF then
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else
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return 0; // Oh-oh! Memory allocation failure
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} // End of IF then
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else
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blockLeft -= sz; // Deduct the allocated amount
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// And return the buffer address
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return &( tail->memBlock[ blockLeft ]);
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} // End of IF else
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} // End of "HeapManager" FUNCTION "getMemory(unsigned int,int)"
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// Friend functions of 'DName'
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inline DName __near __pascal operator + ( char c, const DName & rd )
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{ return DName ( c ) + rd; }
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inline DName __near __pascal operator + ( DNameStatus st, const DName & rd )
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{ return DName ( st ) + rd; }
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inline DName __near __pascal operator + ( pcchar_t s, const DName & rd )
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{ return DName ( s ) + rd; }
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// The 'DName' constructors
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inline __near DName::DName () { node = 0; stat = DN_valid; isIndir = 0; isAUDC = 0; isAUDTThunk = 0; }
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inline __near DName::DName ( DNameNode * pd ) { node = pd; stat = DN_valid; isIndir = 0; isAUDC = 0; isAUDTThunk = 0; }
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__near DName::DName ( char c )
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{
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stat = DN_valid;
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isIndir = 0;
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isAUDC = 0;
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isAUDTThunk = 0;
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node = 0;
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// The NULL character is boring, do not copy
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if ( c )
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doPchar ( &c, 1 );
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} // End of "DName" CONSTRUCTOR '(char)'
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#if 1
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inline __near DName::DName ( const DName & rd )
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{
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stat = rd.stat;
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isIndir = rd.isIndir;
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isAUDC = rd.isAUDC;
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isAUDTThunk = rd.isAUDTThunk;
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node = rd.node;
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} // End of "DName" CONSTRUCTOR '(const DName&)'
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#endif
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__near DName::DName ( DName * pd )
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{
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if ( pd )
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{
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node = gnew pDNameNode ( pd );
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stat = ( node ? DN_valid : DN_error );
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} // End of IF else
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else
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{
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stat = DN_valid;
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node = 0;
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} // End of IF else
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isIndir = 0;
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isAUDC = 0;
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isAUDTThunk = 0;
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} // End of "DName" CONSTRUCTOR '( DName* )'
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__near DName::DName ( pcchar_t s )
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{
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stat = DN_valid;
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node = 0;
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isIndir = 0;
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isAUDC = 0;
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isAUDTThunk = 0;
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if ( s )
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doPchar ( s, strlen ( s ));
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} // End of "DName" CONSTRUCTOR '(pcchar_t)'
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__near DName::DName ( pcchar_t & name, char terminator )
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{
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stat = DN_valid;
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isIndir = 0;
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isAUDC = 0;
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isAUDTThunk = 0;
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node = 0;
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// Is there a string ?
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if ( name )
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if ( *name )
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{
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int len = 0;
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// How long is the string ?
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for ( pcchar_t s = name; *name && ( *name != terminator ); name++ )
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if ( isValidIdentChar ( *name ))
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len++;
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else
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{
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stat = DN_invalid;
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return;
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} // End of IF else
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// Copy the name string fragment
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doPchar ( s, len );
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// Now gobble the terminator if present, handle error conditions
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if ( *name )
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{
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if ( *name++ != terminator )
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{
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stat = DN_error;
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node = 0;
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} // End of IF then
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else
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stat = DN_valid;
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} // End of IF then
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elif ( status () == DN_valid )
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stat = DN_truncated;
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} // End of IF then
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else
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stat = DN_truncated;
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else
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stat = DN_invalid;
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} // End of "DName" CONSTRUCTOR '(pcchar_t&,char)'
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__near DName::DName ( unsigned long num )
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{
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char buf[ 11 ];
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char * pBuf = buf + 10;
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stat = DN_valid;
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node = 0;
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isIndir = 0;
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isAUDC = 0;
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isAUDTThunk = 0;
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// Essentially, 'ultoa ( num, buf, 10 )' :-
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*pBuf = 0;
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do
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{
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*( --pBuf ) = (char)(( num % 10 ) + '0' );
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num /= 10UL;
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} while ( num );
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doPchar ( pBuf, ( 10 - ( pBuf - buf )));
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} // End of "DName" CONSTRUCTOR '(unsigned long)'
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__near DName::DName ( DNameStatus st )
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{
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stat = ((( st == DN_invalid ) || ( st == DN_error )) ? st : DN_valid );
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node = gnew DNameStatusNode ( st );
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isIndir = 0;
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isAUDC = 0;
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isAUDTThunk = 0;
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if ( !node )
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stat = DN_error;
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} // End of "DName" CONSTRUCTOR '(DNameStatus)'
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// Now the member functions for 'DName'
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int __near DName::isValid () const { return (( status () == DN_valid ) || ( status () == DN_truncated )); }
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int __near DName::isEmpty () const { return (( node == 0 ) || !isValid ()); }
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inline DNameStatus __near DName::status () const { return (DNameStatus)stat; } // The cast is to keep Glockenspiel quiet
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inline DName & __near DName::setPtrRef () { isIndir = 1; return *this; }
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inline int __near DName::isPtrRef () const { return isIndir; }
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inline int __near DName::isUDC () const { return ( !isEmpty () && isAUDC ); }
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inline void __near DName::setIsUDC () { if ( !isEmpty ()) isAUDC = TRUE; }
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inline int __near DName::isUDTThunk () const { return ( !isEmpty () && isAUDTThunk ); }
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inline void __near DName::setIsUDTThunk () { if ( !isEmpty ()) isAUDTThunk = TRUE; }
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int __near DName::length () const
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{
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int len = 0;
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if ( !isEmpty ())
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for ( DNameNode * pNode = node; pNode; pNode = pNode->nextNode ())
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len += pNode->length ();
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return len;
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} // End of "DName" FUNCTION "length"
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pchar_t __near DName::getString ( pchar_t buf, int max ) const
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{
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if ( !isEmpty ())
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{
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// Does the caller want a buffer allocated ?
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if ( !buf )
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{
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max = length () + 1;
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buf = gnew char[ max ]; // Get a buffer big enough
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} // End of IF then
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// If memory allocation failure, then return no buffer
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if ( buf )
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{
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// Now, go through the process of filling the buffer (until max is reached)
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int curLen = max;
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DNameNode * curNode = node;
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pchar_t curBuf = buf;
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while ( curNode && ( curLen > 0 ))
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{
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int fragLen = curNode->length ();
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pchar_t fragBuf = 0;
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// Skip empty nodes
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if ( fragLen )
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{
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// Handle buffer overflow
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if (( curLen - fragLen ) < 0 )
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fragLen = curLen;
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// Now copy 'len' number of bytes of the piece to the buffer
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fragBuf = curNode->getString ( curBuf, fragLen );
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// Should never happen, but handle it anyway
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if ( fragBuf )
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{
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// Update string position
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curLen -= fragLen;
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curBuf += fragLen;
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} // End of IF
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} // End of IF
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// Move on to the next name fragment
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curNode = curNode->nextNode ();
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} // End of WHILE
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*curBuf = 0; // Always NULL terminate the resulting string
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} // End of IF
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} // End of IF then
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elif ( buf )
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*buf = 0;
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// Return the buffer
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return buf;
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} // End of "DName" FUNCTION "getString(pchar_t,int)"
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DName __near DName::operator + ( char ch ) const
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{
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DName local ( *this );
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if ( local.isEmpty ())
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local = ch;
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else
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local += ch;
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// And return the newly formed 'DName'
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return local;
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} // End of "DName" OPERATOR "+(char)"
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DName __near DName::operator + ( pcchar_t str ) const
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{
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DName local ( *this );
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|
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if ( local.isEmpty ())
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local = str;
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else
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local += str;
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// And return the newly formed 'DName'
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return local;
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} // End of "DName" OPERATOR "+(pcchar_t)"
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DName __near DName::operator + ( const DName & rd ) const
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{
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DName local ( *this );
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|
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if ( local.isEmpty ())
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local = rd;
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elif ( rd.isEmpty ())
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local += rd.status ();
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else
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local += rd;
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// And return the newly formed 'DName'
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return local;
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} // End of "DName" OPERATOR "+(const DName&)"
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|
|
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DName __near DName::operator + ( DName * pd ) const
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{
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DName local ( *this );
|
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|
|
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if ( local.isEmpty ())
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local = pd;
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else
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local += pd;
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// And return the newly formed 'DName'
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return local;
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} // End of "DName" OPERATOR "+(DName*)"
|
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|
|
|
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DName __near DName::operator + ( DNameStatus st ) const
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{
|
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DName local ( *this );
|
|
|
|
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if ( local.isEmpty ())
|
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local = st;
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else
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local += st;
|
|
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// And return the newly formed 'DName'
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|
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return local;
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|
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} // End of "DName" OPERATOR "+(DNameStatus)"
|
|
|
|
|
|
|
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DName & __near DName::operator += ( char ch )
|
|
{
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if ( ch )
|
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if ( isEmpty ())
|
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*this = ch;
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else
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{
|
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node = node->clone ();
|
|
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if ( node )
|
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*node += gnew charNode ( ch );
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else
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stat = DN_error;
|
|
|
|
} // End of IF
|
|
|
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// And return self
|
|
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return *this;
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|
|
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} // End of "DName" OPERATOR "+=(char)"
|
|
|
|
|
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DName & __near DName::operator += ( pcchar_t str )
|
|
{
|
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if ( str && *str )
|
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if ( isEmpty ())
|
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*this = str;
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|
else
|
|
{
|
|
node = node->clone ();
|
|
|
|
if ( node )
|
|
*node += gnew pcharNode ( str );
|
|
else
|
|
stat = DN_error;
|
|
|
|
} // End of IF
|
|
|
|
// And return self
|
|
|
|
return *this;
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|
|
|
} // End of "DName" OPERATOR "+=(pcchar_t)"
|
|
|
|
|
|
DName & __near DName::operator += ( const DName & rd )
|
|
{
|
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if ( rd.isEmpty ())
|
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*this += rd.status ();
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|
else
|
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if ( isEmpty ())
|
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*this = rd;
|
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else
|
|
{
|
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node = node->clone ();
|
|
|
|
if ( node )
|
|
*node += rd.node;
|
|
else
|
|
stat = DN_error;
|
|
|
|
} // End of IF
|
|
|
|
// And return self
|
|
|
|
return *this;
|
|
|
|
} // End of "DName" OPERATOR "+=(const DName&)"
|
|
|
|
|
|
DName & __near DName::operator += ( DName * pd )
|
|
{
|
|
if ( pd )
|
|
if ( isEmpty ())
|
|
*this = pd;
|
|
elif (( pd->status () == DN_valid ) || ( pd->status () == DN_truncated ))
|
|
{
|
|
DNameNode * pNew = gnew pDNameNode ( pd );
|
|
|
|
|
|
if ( pNew )
|
|
{
|
|
node = node->clone ();
|
|
|
|
if ( node )
|
|
*node += pNew;
|
|
|
|
} // End of IF then
|
|
else
|
|
node = 0;
|
|
|
|
if ( !node )
|
|
stat = DN_error;
|
|
|
|
} // End of IF then
|
|
else
|
|
*this += pd->status ();
|
|
|
|
// And return self
|
|
|
|
return *this;
|
|
|
|
} // End of "DName" OPERATOR "+=(DName*)"
|
|
|
|
|
|
DName & __near DName::operator += ( DNameStatus st )
|
|
{
|
|
if ( isEmpty () || (( st == DN_invalid ) || ( st == DN_error )))
|
|
*this = st;
|
|
else
|
|
{
|
|
DNameNode * pNew = gnew DNameStatusNode ( st );
|
|
|
|
|
|
if ( pNew )
|
|
{
|
|
node = node->clone ();
|
|
|
|
if ( node )
|
|
*node += pNew;
|
|
|
|
} // End of IF then
|
|
else
|
|
node = 0;
|
|
|
|
if ( !node )
|
|
stat = DN_error;
|
|
|
|
} // End of IF else
|
|
|
|
// Return self
|
|
|
|
return *this;
|
|
|
|
} // End of "DName" OPERATOR "+=(DNameStatus)"
|
|
|
|
|
|
|
|
DName & __near DName::operator |= ( const DName & rd )
|
|
{
|
|
// Attenuate the error status. Always becomes worse. Don't propogate truncation
|
|
|
|
if (( status () != DN_error ) && !rd.isValid ())
|
|
stat = rd.status ();
|
|
|
|
// And return self
|
|
|
|
return *this;
|
|
|
|
} // End of "DName" OPERATOR '|=(const DName&)'
|
|
|
|
|
|
|
|
DName & __near DName::operator = ( char ch )
|
|
{
|
|
isIndir = 0;
|
|
isAUDC = 0;
|
|
isAUDTThunk = 0;
|
|
|
|
doPchar ( &ch, 1 );
|
|
|
|
return *this;
|
|
|
|
} // End of "DName" OPERATOR '=(char)'
|
|
|
|
|
|
DName & __near DName::operator = ( pcchar_t str )
|
|
{
|
|
isIndir = 0;
|
|
isAUDC = 0;
|
|
isAUDTThunk = 0;
|
|
|
|
doPchar ( str, strlen ( str ));
|
|
|
|
// And return self
|
|
|
|
return *this;
|
|
|
|
} // End of "DName" OPERATOR '=(pcchar_t)'
|
|
|
|
|
|
DName & __near DName::operator = ( const DName & rd )
|
|
{
|
|
if (( status () == DN_valid ) || ( status () == DN_truncated ))
|
|
{
|
|
stat = rd.stat;
|
|
isIndir = rd.isIndir;
|
|
isAUDC = rd.isAUDC;
|
|
isAUDTThunk = rd.isAUDTThunk;
|
|
node = rd.node;
|
|
|
|
} // End of IF
|
|
|
|
// And return self
|
|
|
|
return *this;
|
|
|
|
} // End of "DName" OPERATOR '=(const DName&)'
|
|
|
|
|
|
DName & __near DName::operator = ( DName * pd )
|
|
{
|
|
if (( status () == DN_valid ) || ( status () == DN_truncated ))
|
|
if ( pd )
|
|
{
|
|
isIndir = 0;
|
|
isAUDC = 0;
|
|
isAUDTThunk = 0;
|
|
node = gnew pDNameNode ( pd );
|
|
|
|
if ( !node )
|
|
stat = DN_error;
|
|
|
|
} // End of IF then
|
|
else
|
|
*this = DN_error;
|
|
|
|
// And return self
|
|
|
|
return *this;
|
|
|
|
} // End of "DName" OPERATOR '=(DName*)'
|
|
|
|
|
|
DName & __near DName::operator = ( DNameStatus st )
|
|
{
|
|
if (( st == DN_invalid ) || ( st == DN_error ))
|
|
{
|
|
node = 0;
|
|
|
|
if ( status () != DN_error )
|
|
stat = st;
|
|
|
|
} // End of IF then
|
|
elif (( status () == DN_valid ) || ( status () == DN_truncated ))
|
|
{
|
|
isIndir = 0;
|
|
isAUDC = 0;
|
|
isAUDTThunk = 0;
|
|
node = gnew DNameStatusNode ( st );
|
|
|
|
if ( !node )
|
|
stat = DN_error;
|
|
|
|
} // End of ELIF then
|
|
|
|
// And return self
|
|
|
|
return *this;
|
|
|
|
} // End of "DName" OPERATOR '=(DNameStatus)'
|
|
|
|
|
|
// Private implementation functions for 'DName'
|
|
|
|
void __near DName::doPchar ( pcchar_t str, int len )
|
|
{
|
|
if ( !(( status () == DN_invalid ) || ( status () == DN_error )))
|
|
if ( node )
|
|
*this = DN_error;
|
|
elif ( str && len )
|
|
{
|
|
// Allocate as economically as possible
|
|
|
|
switch ( len )
|
|
{
|
|
case 0:
|
|
stat = DN_error;
|
|
break;
|
|
|
|
case 1:
|
|
node = gnew charNode ( *str );
|
|
|
|
if ( !node )
|
|
stat = DN_error;
|
|
break;
|
|
|
|
default:
|
|
node = gnew pcharNode ( str, len );
|
|
|
|
if ( !node )
|
|
stat = DN_error;
|
|
break;
|
|
|
|
} // End of SWITCH
|
|
} // End of ELIF
|
|
else
|
|
stat = DN_invalid;
|
|
|
|
} // End of "DName" FUNCTION "doPchar(pcchar_t,int)"
|
|
|
|
|
|
|
|
// The member functions for the 'Replicator'
|
|
|
|
inline int __near Replicator::isFull () const { return ( index == 9 ); }
|
|
inline __near Replicator::Replicator ()
|
|
: ErrorDName ( DN_error ), InvalidDName ( DN_invalid )
|
|
{ index = -1; }
|
|
|
|
|
|
|
|
Replicator & __near Replicator::operator += ( const DName & rd )
|
|
{
|
|
if ( !isFull () && !rd.isEmpty ())
|
|
{
|
|
DName * pNew = gnew DName ( rd );
|
|
|
|
|
|
// Don't update if failed
|
|
|
|
if ( pNew )
|
|
dNameBuffer[ ++index ] = pNew;
|
|
|
|
} // End of IF
|
|
|
|
return *this;
|
|
|
|
} // End of "Replicator" OPERATOR '+=(const DName&)'
|
|
|
|
|
|
const DName & __near Replicator::operator [] ( int x ) const
|
|
{
|
|
if (( x < 0 ) || ( x > 9 ))
|
|
return ErrorDName;
|
|
elif (( index == -1 ) || ( x > index ))
|
|
return InvalidDName;
|
|
else
|
|
return *dNameBuffer[ x ];
|
|
|
|
} // End of "Replicator" OPERATOR '[](int)'
|
|
|
|
|
|
|
|
// The member functions for the 'DNameNode' classes
|
|
|
|
#if ( !NO_VIRTUAL )
|
|
__near DNameNode::DNameNode ()
|
|
#else // } elif NO_VIRTUAL {
|
|
__near DNameNode::DNameNode ( NodeType ndTy )
|
|
: typeIndex ( ndTy )
|
|
#endif // NO_VIRTUAL
|
|
{ next = 0; }
|
|
|
|
inline __near DNameNode::DNameNode ( const DNameNode & rd ) { next = (( rd.next ) ? rd.next->clone () : 0 ); }
|
|
|
|
inline DNameNode * __near DNameNode::nextNode () const { return next; }
|
|
|
|
DNameNode * __near DNameNode::clone ()
|
|
{
|
|
return gnew pDNameNode ( gnew DName ( this ));
|
|
}
|
|
|
|
#if ( NO_VIRTUAL )
|
|
int __near DNameNode::length () const
|
|
{ // Pure function, should not be called
|
|
|
|
switch ( typeIndex )
|
|
{
|
|
case charNode_t:
|
|
return ((charNode*)this )->length ();
|
|
|
|
case pcharNode_t:
|
|
return ((pcharNode*)this )->length ();
|
|
|
|
case pDNameNode_t:
|
|
return ((pDNameNode*)this )->length ();
|
|
|
|
case DNameStatusNode_t:
|
|
return ((DNameStatusNode*)this )->length ();
|
|
|
|
} // End of SWITCH
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
pchar_t __near DNameNode::getString ( pchar_t s, int l ) const
|
|
{ // Pure function, should not be called
|
|
|
|
switch ( typeIndex )
|
|
{
|
|
case charNode_t:
|
|
return ((charNode*)this )->getString ( s, l );
|
|
|
|
case pcharNode_t:
|
|
return ((pcharNode*)this )->getString ( s, l );
|
|
|
|
case pDNameNode_t:
|
|
return ((pDNameNode*)this )->getString ( s, l );
|
|
|
|
case DNameStatusNode_t:
|
|
return ((DNameStatusNode*)this )->getString ( s, l );
|
|
|
|
} // End of SWITCH
|
|
|
|
return 0;
|
|
}
|
|
#endif // NO_VIRTUAL
|
|
|
|
|
|
DNameNode & __near DNameNode::operator += ( DNameNode * pNode )
|
|
{
|
|
if ( pNode )
|
|
{
|
|
if ( next )
|
|
{
|
|
// Skip to the end of the chain
|
|
|
|
for ( DNameNode* pScan = next; pScan->next; pScan = pScan->next )
|
|
;
|
|
|
|
// And append the new node
|
|
|
|
pScan->next = pNode;
|
|
|
|
} // End of IF then
|
|
else
|
|
next = pNode;
|
|
|
|
} // End of IF
|
|
|
|
// And return self
|
|
|
|
return *this;
|
|
|
|
} // End of "DNameNode" OPERATOR '+=(DNameNode*)'
|
|
|
|
|
|
|
|
// The 'charNode' virtual functions
|
|
|
|
__near charNode::charNode ( char ch )
|
|
#if ( NO_VIRTUAL )
|
|
: DNameNode ( charNode_t )
|
|
#endif // NO_VIRTUAL
|
|
{ me = ch; }
|
|
|
|
inline int __near charNode::length () const { return 1; }
|
|
|
|
pchar_t __near charNode::getString ( pchar_t buf, int len ) const
|
|
{
|
|
if ( buf && len )
|
|
*buf = me;
|
|
else
|
|
buf = 0;
|
|
|
|
// Now return the character
|
|
|
|
return buf;
|
|
|
|
} // End of "charNode" FUNCTION "getString(pchar_t,int)"
|
|
|
|
|
|
|
|
// The 'pcharNode' virtual functions
|
|
|
|
inline int __near pcharNode::length () const { return myLen; }
|
|
|
|
|
|
__near pcharNode::pcharNode ( pcchar_t str, int len )
|
|
#if ( NO_VIRTUAL )
|
|
: DNameNode ( pcharNode_t )
|
|
#endif // NO_VIRTUAL
|
|
{
|
|
// Get length if not supplied
|
|
|
|
if ( !len && str )
|
|
len = strlen ( str );
|
|
|
|
// Allocate a new string buffer if valid state
|
|
|
|
if ( len && str )
|
|
{
|
|
me = gnew char[ len ];
|
|
myLen = len;
|
|
|
|
if ( me )
|
|
strncpy ( me, str, len );
|
|
|
|
} // End of IF then
|
|
else
|
|
{
|
|
me = 0;
|
|
myLen = 0;
|
|
|
|
} // End of IF else
|
|
} // End of "pcharNode" CONSTRUCTOR '(pcchar_t,int)'
|
|
|
|
|
|
pchar_t __near pcharNode::getString ( pchar_t buf, int len ) const
|
|
{
|
|
// Use the shorter of the two lengths (may not be NULL terminated)
|
|
|
|
if ( len > pcharNode::length ())
|
|
len = pcharNode::length ();
|
|
|
|
// Do the copy as appropriate
|
|
|
|
return (( me && buf && len ) ? strncpy ( buf, me, len ) : 0 );
|
|
|
|
} // End of "pcharNode" FUNCTION "getString(pchar_t,int)"
|
|
|
|
|
|
|
|
// The 'pDNameNode' virtual functions
|
|
|
|
__near pDNameNode::pDNameNode ( DName * pName )
|
|
#if ( NO_VIRTUAL )
|
|
: DNameNode ( pDNameNode_t )
|
|
#endif // NO_VIRTUAL
|
|
{ me = (( pName && (( pName->status () == DN_invalid ) || ( pName->status () == DN_error ))) ? 0 : pName ); }
|
|
|
|
inline int __near pDNameNode::length () const { return ( me ? me->length () : 0 ); }
|
|
|
|
pchar_t __near pDNameNode::getString ( pchar_t buf, int len ) const
|
|
{ return (( me && buf && len ) ? me->getString ( buf, len ) : 0 ); }
|
|
|
|
|
|
|
|
// The 'DNameStatusNode' virtual functions
|
|
|
|
__near DNameStatusNode::DNameStatusNode ( DNameStatus stat )
|
|
#if ( NO_VIRTUAL )
|
|
: DNameNode ( DNameStatusNode_t )
|
|
#endif // NO_VIRTUAL
|
|
{ me = stat; myLen = (( me == DN_truncated ) ? TruncationMessageLength : 0 ); }
|
|
|
|
inline int __near DNameStatusNode::length () const { return myLen; }
|
|
|
|
pchar_t __near DNameStatusNode::getString ( pchar_t buf, int len ) const
|
|
{
|
|
// Use the shorter of the two lengths (may not be NULL terminated)
|
|
|
|
if ( len > DNameStatusNode::length ())
|
|
len = DNameStatusNode::length ();
|
|
|
|
// Do the copy as appropriate
|
|
|
|
return ((( me == DN_truncated ) && buf && len ) ? strncpy ( buf, TruncationMessage, len ) : 0 );
|
|
|
|
} // End of "DNameStatusNode" FUNCTION "getString(pchar_t,int)"
|
|
|
|
|
|
|
|
static unsigned int __near __pascal strlen ( pcchar_t str )
|
|
{
|
|
for ( unsigned int len = 0; *str; str++ )
|
|
len++;
|
|
|
|
return len;
|
|
|
|
} // End of FUNCTION "strlen"
|
|
|
|
|
|
static pchar_t __near __pascal strncpy ( pchar_t dst, pcchar_t src, unsigned int len )
|
|
{
|
|
for ( char __far * d = dst; ( len && ( *d = *src )); d++, src++, len-- )
|
|
;
|
|
|
|
return dst;
|
|
|
|
} // End of FUNCTION "strncpy"
|