Click here to Skip to main content
Click here to Skip to main content
 
Add your own
alternative version

XMLLib for PUGXML with XPath

, 29 Oct 2009 CPOL
A library for PugXML which implements 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_)

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Share

About the Author

JCrane2
Web Developer
United States United States
No Biography provided

| Advertise | Privacy | Terms of Use | Mobile
Web02 | 2.8.141223.1 | Last Updated 29 Oct 2009
Article Copyright 2003 by JCrane2
Everything else Copyright © CodeProject, 1999-2014
Layout: fixed | fluid