gistfile1.js

function parseFluidinfoValue(value){
    /*
     * Parse a string into one of the 5 types of values recognized by
     * Fluidinfo.
     *
     * param: value is a string
     *
     * return: a value of type
     *
     *             null | [string, string, ...] | float | bool | string
     */
    var numberRegex = /^\s*[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?\s*$/;

    // convert empty string to null
    if (typeof value === 'undefined' || value === ''){
        return null;
    }

    // The value is a non-empty string of some sort. Check if it's a
    // list. (Found within [] and comma separated).
    if (value.match(/^\s*\[.*\]\s*$/)){
        value = trim(value);
        // Convert to Array
        var rawArray = value.slice(1, -1).split(',');
        var val = [];
        for (var i = 0; i < rawArray.length; i++){
            val.push(trim(rawArray[i]));
        }
        return val;
    }

    if (value.match(numberRegex)){
        // A number.
        return parseFloat(value);
    }

    // Boolean / null value?
    var lower = value.toLowerCase();
    if (lower === 'true' || lower === 'false'){
        return lower === 'true';
    }

    if (lower === 'null'){
        return null;
    }

    // A plain old string.
    return value;
}