RegEx.h

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#ifndef REGEX_H
#define REGEX_H

#include <pcre/pcre.h>
#include <abuse/RefCounted.h>
#include <string>
#include <stdexcept>
#include <utility>

class RegEx
{
public:
        RegEx(const std::string& pattern, int size=90)throw(std::runtime_error);
        virtual ~RegEx();
        void operator=(const std::string& pattern)throw(std::runtime_error);
        //pair<int,size_t> returns the pos of the match, and the size of the same
        //pair<int,size_t> (-1,0) means no matches.
        std::pair<int,size_t> match(const std::string& what,int from=0)const throw(std::runtime_error);
        std::string operator[](const std::string& subpatt)const throw(std::runtime_error);
        std::string operator[](int n)const throw(std::runtime_error);
private:
        struct PcreProxy
        {
                pcre* m_ptr;
                PcreProxy(pcre* ptr=NULL):m_ptr(ptr){}
                ~PcreProxy(){pcre_free(m_ptr);}
        };
        RefCounted<PcreProxy> m_pcre;
        mutable int* m_pVector;
        int m_size;
        mutable std::string m_string;
};

#endif

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