StackOverflow Q 54357098

    function updatePropFile(string propFile, struct propStruct, struct removeStruct){
        var key = "";
        var value = "";
        var config = "";

        // create empty object
        config = createObject("java","org.apache.commons.configuration.PropertiesConfiguration").init();

        // load from given file path
        config.setPath(arguments.propFile);
        config.load();

        // append new properties
        for(key in arguments.propStruct){
            if(config.containsKey(key)){
                config.setProperty(key, arguments.propStruct[key]);
            }else{
                config.addProperty(key, arguments.propStruct[key]);
            }
        }

        // clear prop and add as comment
        for(key in arguments.removeStruct){
            if(config.containsKey(key)){
                value = config.getProperty(key).toString();
                config.clearProperty(key);
                config.addProperty('##'&key, key & "=" & value);
            }
        }

        // save to file
        config.save();
    }