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REG file parser using the Boost Spirit Parser Framework

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29 Jun 2009CPOL12 min read 33K   1.1K   37  
This article describes a sample parser of reg files using the Boost Spirit Parser Framework. We'll discuss why we use the curtain libraries and make one or another solution, algorithm, and also tests.
#ifndef __COUNT_OBSERVER_H_INCLUDED__
#define __COUNT_OBSERVER_H_INCLUDED__

#include "IRegFileObserver.hpp"

namespace reg_parser
{

template<class charT,class streamT>
class CRegCountObserver:public IRegFileObserver<charT>
{
	size_t keysCount_;  
    size_t valuesCount_;

	streamT& out_;
public:
    CRegCountObserver(streamT& out)
		: keysCount_(0)
		, valuesCount_(0)
		, out_(out)
	{}
	~CRegCountObserver()
	{
		out_ << "Keys count: "
			 << keysCount_ 
			 << "\t Values count: " 
			 << valuesCount_
			 << "\n";
	}
    
// Overrides
    void OnKeyFound(const charT* begin, const charT* end)
    {
        ++keysCount_;
    }
    void OnValueFound(const charT* nameBegin, const charT* nameEnd,
                      const charT* dataBegin, const charT* dataEnd)
    {
        ++valuesCount_;
    }

// Help function    
    size_t GetKeysCount()const
    {
        return keysCount_;
    }
    size_t GetVuluesCount()const
    {
        return valuesCount_;
    }
};

}//namespace reg_parser

#endif // __COUNT_OBSERVER_H_INCLUDED__

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