XMLLib for PUGXML with XPath

//**************************************************************************************************************************
//* Blue Xml Extension
//* Copyright (c) 2002-2003 Josh Harler
//*
//* Blue - General Purpose C++ Library
//* Copyright (c) 2002-2003 Josh Harler
//*
//* This software is provided 'as-is', without any express or implied warranty. In no event
//* will the authors be held liable for any damages arising from the use of this software.
//*
//* Permission is granted to anyone to use this software for any purpose, including commercial
//* applications, and to alter it and redistribute it freely, subject to the following restrictions:
//*
//*     1. The origin of this software must not be misrepresented; you must not claim that you
//*     wrote the original software. If you use this software in a product, an acknowledgment in the
//*     product documentation would be appreciated but is not required.
//*
//*     2. Altered source versions must be plainly marked as such, and must not be misrepresented as
//*     being the original software.
//*
//*     3. This notice may not be removed or altered from any source distribution.
//*
//* Modified by JCrane2 to support PugXML parser:
//* http://www.codeproject.com/soap/pugxml.asp
//* http://www.codeproject.com/soap/JCraneArticle.asp
//*
//* file   PugXPathPredicate.h
//**
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_PUGXPATHPREDICATE_H__E523538D_8427_4D8B_8059_06FF5FD0492F__INCLUDED_)
#define AFX_PUGXPATHPREDICATE_H__E523538D_8427_4D8B_8059_06FF5FD0492F__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

// Include the Pug XML library.
#include "pugxml.h"
#include <sstream>
#include <io.h>
#include <sys\stat.h>

using namespace std;
using namespace pug;

#include "PugXPathExpression.h"

namespace blue
{
    namespace ext
    {
        namespace xml
        {
        /****
        * \class PugXPathPredicate
        * \brief Evaluates an PugXPath predicate.
            */
            class PugXPathPredicate
            {
            public:
                // ===========================================================
                //  creation/destruction
                // ===========================================================

                /** Constructor. */
                PugXPathPredicate();

                /** Destructor. */
                ~PugXPathPredicate();


                // ===========================================================
                //  query
                // ===========================================================

                /**
                * Parses the string into a series of tokens that are used to
                * evaluate the predicate.
                */
                Array<PugXPathToken> parsePredicate(BString predicate);

                /**
                * Determines if the function exists for use in the predicate
                * object.
                */
                bool hasFunction(BString function);

                /** Returns a pointer to the function object. */
                PugXPathFunction* getFunction(BString function);
                /** overload. */
                const PugXPathFunction* getFunction(BString function) const;


                // ===========================================================
                //  manipulation
                // ===========================================================

                /** Adds a function for use with this predicate object. */
                void addFunction(PugXPathFunction* function);

                /** Removes a function from use with this predicate object. */
                void removeFunction(BString function);

                /** Evaluates the predicate. */
                PugXPathToken evaluate(Array<PugXPathToken> predicate, Array<xml_node_struct*> search, xml_node_struct* context);


            private:
            /**
            * Copy constructor. Private because PugXPathPredicates should not be
            * manipulated by more than one instance.
                */
                PugXPathPredicate(const PugXPathPredicate&);
                /** Private assignment operator. See copy constructor documentation. */
                const PugXPathPredicate& operator=(const PugXPathPredicate&);


                PugXPathToken evaluateSection(Array<PugXPathToken> predicate, Array<xml_node_struct*> search, xml_node_struct* context, int begIdx, int endIdx, bool func);


                Array<PugXPathFunction*> m_operators;
                Array<PugXPathFunction*> m_defaults;
                Array<PugXPathFunction*> m_functions;
            };
        }
    }
}   // namespaces

#endif // !defined(AFX_PUGXPATHPREDICATE_H__E523538D_8427_4D8B_8059_06FF5FD0492F__INCLUDED_)