175 lines
2.8 KiB
JavaScript
175 lines
2.8 KiB
JavaScript
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/*!
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* @name JavaScript/NodeJS Merge v1.2.0
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* @author yeikos
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* @repository https://github.com/yeikos/js.merge
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* Copyright 2014 yeikos - MIT license
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* https://raw.github.com/yeikos/js.merge/master/LICENSE
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*/
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;(function(isNode) {
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/**
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* Merge one or more objects
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* @param bool? clone
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* @param mixed,... arguments
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* @return object
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*/
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var Public = function(clone) {
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return merge(clone === true, false, arguments);
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}, publicName = 'merge';
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/**
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* Merge two or more objects recursively
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* @param bool? clone
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* @param mixed,... arguments
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* @return object
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*/
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Public.recursive = function(clone) {
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return merge(clone === true, true, arguments);
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};
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/**
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* Clone the input removing any reference
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* @param mixed input
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* @return mixed
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*/
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Public.clone = function(input) {
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var output = input,
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type = typeOf(input),
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index, size;
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if (type === 'array') {
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output = [];
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size = input.length;
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for (index=0;index<size;++index)
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output[index] = Public.clone(input[index]);
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} else if (type === 'object') {
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output = {};
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for (index in input)
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output[index] = Public.clone(input[index]);
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}
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return output;
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};
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/**
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* Merge two objects recursively
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* @param mixed input
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* @param mixed extend
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* @return mixed
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*/
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function merge_recursive(base, extend) {
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if (typeOf(base) !== 'object')
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return extend;
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for (var key in extend) {
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if (typeOf(base[key]) === 'object' && typeOf(extend[key]) === 'object') {
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base[key] = merge_recursive(base[key], extend[key]);
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} else {
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base[key] = extend[key];
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}
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}
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return base;
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}
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/**
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* Merge two or more objects
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* @param bool clone
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* @param bool recursive
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* @param array argv
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* @return object
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*/
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function merge(clone, recursive, argv) {
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var result = argv[0],
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size = argv.length;
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if (clone || typeOf(result) !== 'object')
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result = {};
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for (var index=0;index<size;++index) {
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var item = argv[index],
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type = typeOf(item);
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if (type !== 'object') continue;
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for (var key in item) {
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var sitem = clone ? Public.clone(item[key]) : item[key];
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if (recursive) {
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result[key] = merge_recursive(result[key], sitem);
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} else {
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result[key] = sitem;
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}
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}
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}
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return result;
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}
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/**
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* Get type of variable
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* @param mixed input
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* @return string
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*
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* @see http://jsperf.com/typeofvar
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*/
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function typeOf(input) {
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return ({}).toString.call(input).slice(8, -1).toLowerCase();
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}
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if (isNode) {
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module.exports = Public;
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} else {
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window[publicName] = Public;
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}
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})(typeof module === 'object' && module && typeof module.exports === 'object' && module.exports);
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