source: imaps-frontend/node_modules/relateurl/lib/options.js

"use strict";

var objUtils = require("./util/object");



function getOptions(options, defaults)
{
        if ( objUtils.isPlainObject(options) )
        {
                var newOptions = {};
                
                for (var i in defaults)
                {
                        if ( defaults.hasOwnProperty(i) )
                        {
                                if (options[i] !== undefined)
                                {
                                        newOptions[i] = mergeOption(options[i], defaults[i]);
                                }
                                else
                                {
                                        newOptions[i] = defaults[i];
                                }
                        }
                }
                
                return newOptions;
        }
        else
        {
                return defaults;
        }
}



function mergeOption(newValues, defaultValues)
{
        if (defaultValues instanceof Object && newValues instanceof Object)
        {
                if (defaultValues instanceof Array && newValues instanceof Array)
                {
                        return defaultValues.concat(newValues);
                }
                else
                {
                        return objUtils.shallowMerge(newValues, defaultValues);
                }
        }
        
        return newValues;
}



module.exports = getOptions;