string_tokenizer.h

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#ifndef INCL_STRING_TOKENIZER_H
#define INCL_STRING_TOKENIZER_H

#include "utilit.h"
class StringTokenizer{
        char *text_ptr;
        char *text;
        int i;
        //-------------------------------------------------------
        string delims;
        bool is_delim(char ch){
                return delims.find_first_of(ch) != string::npos;
        }
        char *_val;
public:
        //-------------------------------------------------------
        StringTokenizer(const char *_text, const char *_delims)
                :delims(_delims)
                ,i(-1)
        {
                size_t leng = strlen(_text);
                text_ptr = new char[leng+2];
                text = text_ptr;
                strcpy(text, _text);
                text[leng+1] = 0;
        }

        //-------------------------------------------------------
        ~StringTokenizer(){
                delete []text_ptr;
        }

        //-------------------------------------------------------
        const char * operator ()(){
                ++i;
                // skip delims
                while(*text && is_delim(*text))
                        text++;

                if(*text == 0)  return 0;

                char *ret_val = text;

                while(*text && !is_delim(*text))
                        text++;
                *text++ = 0;
                _val = ret_val;
                return ret_val;
        }
        string next_token ()
        {
                const char* s = operator()();
                if (s) 
                        return s;
                else 
                        return string();
        }

        const char * get_rest ()
        {
                return text;
        };

        char *val(){return _val;}
        int  count(){return i;}
        bool has_next(){return (*text) != 0;}

};


#endif // INCL_STRING_TOKENIZER_H