comma_list.h

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#ifndef COMMA_LIST_H
#define COMMA_LIST_H

#include <string>
#include <vector>

#include "string_manip.h"

template <class T>
class comma_list
{
public:
    comma_list();

    void set(std::string const & str);

    bool is_set() const {
        return !is_all;
    }

    bool match(T const & value) const;

private:
    typedef T value_type;
    typedef std::vector<value_type> container_type;
    typedef typename container_type::const_iterator const_iterator;
    bool is_all;
    container_type items;
};


template <class T>
comma_list<T>::comma_list()
    : is_all(true)
{
}


template <class T>
void comma_list<T>::set(std::string const & str)
{
    items.clear();

    is_all = false;

    std::vector<std::string> result = separate_token(str, ',');
    for (size_t i = 0 ; i < result.size() ; ++i) {
        if (result[i] == "all") {
            is_all = true;
            items.clear();
            break;
        }
        items.push_back(op_lexical_cast<T>(result[i]));
    }
}


template <class T>
bool comma_list<T>::match(T const & value) const
{
    if (is_all)
        return true;

    const_iterator cit = items.begin();
    const_iterator const end = items.end();

    for (; cit != end; ++cit) {
        if (value == *cit)
            return true;
    }

    return false;
}


#endif /* !COMMA_LIST_H */