components/files/multidircollection.hpp

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#ifndef COMPONENTS_FILES_MULTIDIRSOLLECTION_HPP
#define COMPONENTS_FILES_MULTIDIRSOLLECTION_HPP

#include <map>
#include <vector>
#include <string>
#include <locale>
#include <cctype>

#include <boost/filesystem/path.hpp>

namespace Files
{
    typedef std::vector<boost::filesystem::path> PathContainer;

    struct NameLess
    {
        bool mStrict;

        NameLess (bool strict) : mStrict (strict) {}

        bool operator() (const std::string& left, const std::string& right) const
        {
            if (mStrict)
                return left<right;

            std::size_t min = std::min (left.length(), right.length());
            std::locale loc;

            for (std::size_t i=0; i<min; ++i)
            {
                char l = std::tolower (left[i], loc);
                char r = std::tolower (right[i], loc);

                if (l<r)
                    return true;
                if (l>r)
                    return false;
            }

            return left.length()<right.length();
        }
    };

    class MultiDirCollection
    {
        public:

            typedef std::map<std::string, boost::filesystem::path, NameLess> TContainer;
            typedef TContainer::const_iterator TIter;

        private:

            TContainer mFiles;

        public:

            MultiDirCollection (const Files::PathContainer& directories,
                const std::string& extension, bool foldCase);

            boost::filesystem::path getPath (const std::string& file) const;

            bool doesExist (const std::string& file) const;

            TIter begin() const;

            TIter end() const;

    };
}

#endif