StringTokenizer

#ifndef STRING_TOKENIZER_H
#define STRING_TOKENIZER_H

#include <string>

class StringTokenizer{
	std::string s;
	std::string d;
	size_t pos;
	void SkipToNextNonDelimiter(){
		while(pos < s.size()){
			if(d.find(s[pos]) != std::string::npos){ // if is a delimiter
				pos++;
			}else{
				break;
			}
		}
	}
public:
	StringTokenizer(const std::string &str, const char *delimiters = " \t\n\r"):
	s(str),
	d(delimiters),
	pos(0)
	{
		SkipToNextNonDelimiter();
	}
	~StringTokenizer(){}

	bool hasNext() const{
		return pos < s.size();
	}

	void next(std::string &str){
		int newpos = pos+1;
		while(newpos < s.size()){
			if(d.find(s[newpos]) == std::string::npos){ // if NOT a delimiter
				newpos++;
			}else{
				break;
			}
		}
		str = s.substr(pos, newpos-pos);
		pos = newpos;
		SkipToNextNonDelimiter();
		//std::cout << pos << std::endl;
	}
};


#endif