define({

	/**
    * Get a parameter by name from window.location.search
    *
    * @param name - the name of the parameter
    *
    * @return - the value of the parameter
    */
    getParameterByName: function(name) {
        name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
        var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
            results = regex.exec(location.search);
        return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
    },

    /**
    * Parse text file used to store tags.
    *
    * @param txt_file - the text file to parse
    * @param treatment_callback - function to apply to a tag. 
    *        Take as parameter the tag to treat.
    *        Return the treated tag (See trimOfficialMap).
    *
    * @return - an array containing all the valid tags found
    */
    parseTags: function(txt_file, treatment_callback){
        var tab_tags = [];

        //get all lines of txt file in a tab
        var tab_lines = txt_file.split("\n").sort();

        for(var i = 0, length = tab_lines.length ; i < length ; i++){
            var tag = $.trim(tab_lines[i]);

            //test if tag is correct
            if(/^[\w,/.]+$/.test(tag)){
                
                if(treatment_callback){
                    var value = treatment_callback(tag);
                    if (!value) {
                        continue;
                    }
                    tag = value;
                }

                tab_tags.push(tag);
            }
        }

        return tab_tags;
    },

    /**
    * Trim the useless parts of official map name.
    *
    * @param map_name - the name of the map to trim.
    *
    * @return the treated map_name
    */
    trimOfficialMap: function(map_name){
        //remove path
        map_name = map_name.substr(map_name.lastIndexOf("/") + 1, map_name.length);
        
        //remove extension
        map_name = map_name.substr(0, map_name.indexOf("."));

        //remove useless end of name ("MAIN_SCENE")
        if(map_name.split("_").length > 2){
            map_name = map_name.substr(0, map_name.indexOf("_"));
        }
        
        return map_name;
    },
});