WordGenerator

gistfile1.cpp

#include "WordGenerator.h"

#include <algorithm>
void WordGenerator::createAlphabet(char* range)
{
    char start,end;  
    while(*range != '\0') //Koniec stringu
    {
        if(*(range+1) == '-'){
            alphabet.push_back(*range); //Wpisywanie danych które sa swobodne
            start=*range++;  //przechwytanie ostatniego swobodnego
            //jako poczatek zakresu
        } 
        else{
            alphabet.push_back(*range++);
        }
        if(*range=='-') {  
            end = *(range+1);
            if(start > end)    
                while(--start >= end)
                    alphabet.push_back(start);
            else
                while(++start <= end)
                    alphabet.push_back(start);
            start=end;
            range +=2; //Przeskok przez - i znak konca zakresu
        }  
    }


}
std::string WordGenerator::getCurrent()
{
    return currentWord;
}
char WordGenerator::getNextLetterAlphabet(char after)
{
    std::vector<char>::iterator it;
    it = std::find(alphabet.begin(),alphabet.end(),after);
    ++it;  
    return *it;

}
void WordGenerator::insertFrontCharacter(std::string& word)
{
     word.insert(word.begin(),firstLetter);
}
void WordGenerator::changeWord(std::string& word)
{
    std::string::reverse_iterator rbegin = word.rbegin();
    std::string::reverse_iterator rend = word.rend();
    bool carry = true;
    while(carry)
    {
        if(rbegin < rend)
        {
            if(*rbegin == lastLetter)
            {
                *rbegin = firstLetter;
                carry = true;
            }
            else
            {
                *rbegin  = getNextLetterAlphabet(*rbegin);
                carry = false;
            }
        }
        else
        {
            insertFrontCharacter(word);  
            return; 
        }

        rbegin++;
    }
}
std::string WordGenerator::generateNext()
{
    std::string newWord = currentWord;

    changeWord(newWord);
   
    currentWord = newWord;
    return currentWord;
}