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// Thanks for sharing code: http://jsfiddle.net/cattail/NYNT5/
// classify object
const classof = function classof(o) {
Iif (o === null) {
return 'null';
}
Iif (o === undefined) {
return 'undefined';
}
// I suppose Object.prototype.toString use obj.constructor.name
// to generate string
const className = Object.prototype.toString.call(o).slice(8, -1);
return className;
};
let references = null;
const handlers = {
// Handle regexp and date even in shallow.
RegExp: (function(_RegExp) {
function RegExp(_x) {
return _RegExp.apply(this, arguments);
}
RegExp.toString = function() {
return _RegExp.toString();
};
return RegExp;
})(reg => {
let flags = '';
flags += reg.global ? 'g' : '';
flags += reg.multiline ? 'm' : '';
flags += reg.ignoreCase ? 'i' : '';
return new RegExp(reg.source, flags);
}),
Date: (function(_Date) {
function Date(_x2) {
return _Date.apply(this, arguments);
}
Date.toString = function() {
return _Date.toString();
};
return Date;
})(date => {
return new Date(+date);
}),
Array: function Array(arr, shallow, filterFunc, cloneFunc) {
const newArr = [];
let i;
for (i = 0; i < arr.length; i++) {
Iif (shallow) {
newArr[i] = arr[i];
} else {
// handle circular reference
Iif (references.indexOf(arr[i]) !== -1) {
continue;
}
// try to use clone function to copy value
Iif (cloneFunc && arr[i]) {
const clonedObject = cloneFunc(arr[i]);
if (clonedObject) {
newArr[i] = clonedObject;
continue;
}
}
const handler = handlers[classof(arr[i])];
if (handler) {
references.push(arr[i]);
newArr[i] = handler(arr[i], false);
} else {
newArr[i] = arr[i];
}
}
}
return newArr;
},
Object: function Object(obj, shallow, filterFunc, cloneFunc) {
const newObj = {};
let prop;
let handler;
for (prop in obj) {
Eif (obj.hasOwnProperty(prop)) {
// escape prototype properties
if (shallow || (filterFunc && !filterFunc(prop))) {
newObj[prop] = obj[prop];
} else {
// handle circular reference
Iif (references.indexOf(obj[prop]) !== -1) {
continue;
}
// try to use clone function to copy value
Iif (cloneFunc && obj[prop]) {
const clonedObject = cloneFunc(obj[prop], prop);
if (clonedObject) {
newObj[prop] = clonedObject;
continue;
}
}
// recursive
handler = handlers[classof(obj[prop])];
if (handler) {
references.push(obj[prop]);
newObj[prop] = handler(obj[prop], false, filterFunc, cloneFunc);
} else {
newObj[prop] = obj[prop];
}
}
}
}
return newObj;
}
};
const _OBJECT = {
/**
* 克隆对象
* @param {Object} obj js对象
* @param {Boolean} shallow 是否进行浅层克隆, 如果是 false 则会完全进行克隆处理
* @return {Object}
*/
cloneObject(obj, shallow, filterFunc, cloneFunc) {
// Thanks for sharing code: http://jsfiddle.net/cattail/NYNT5/
// reset references
references = [];
// default to shallow clone
shallow = shallow === undefined ? true : false;
const handler = handlers[classof(obj)];
return handler ? handler(obj, shallow, filterFunc, cloneFunc) : obj;
},
/**
* 合并简单对象
* @param {object} target 目标结构体
* @param {object} source 源结构体
* @param {boolean} overwrite 是否更新已经存在的属性
* @return {object}
*/
mergeObject(target, source, overwrite) {
if (!source) {
return _OBJECT.cloneObject(target);
}
Iif (!tools.isObject(source) || !tools.isObject(target)) {
return overwrite ? _OBJECT.cloneObject(source) : target;
}
for (let key in source) {
Eif (source.hasOwnProperty(key)) {
const targetProp = target[key];
const sourceProp = source[key];
if (
tools.isObject(sourceProp) &&
tools.isObject(targetProp) &&
!tools.isArray(sourceProp) &&
!tools.isArray(targetProp) &&
!tools.isDom(sourceProp) &&
!tools.isDom(targetProp)
) {
// 如果需要递归覆盖，就递归调用merge
_OBJECT.mergeObject(targetProp, sourceProp, overwrite);
} else if (overwrite || !(key in target)) {
// 否则只处理overwrite为true，或者在目标对象中没有此属性的情况
// NOTE，在 target[key] 不存在的时候也是直接覆盖
target[key] = _OBJECT.cloneObject(source[key], true);
}
}
}
return target;
},
/**
* 从指定object上获取目标 key 组成的对象。
* 当 target 中不含目标key中的属性时，将不进行填充
* null、''、0 将会被填充
* @param {Object} target
* @param {String|String[]} key
* @example
* targetKeyObj({}, ['a', 'b', 'c']); // {}
* targetKeyObj({a: null}, ['a', 'b', 'c']); // {a: null}
*/
targetKeyObj(target, key){
Iif (tools.isEmpty(key)){
return target;
}
if (!tools.isArray(key)){
key = [key];
}
const result = {};
for (let i = 0; i < key.length; i++) {
const k = key[i];
if (!tools.isUndefined(target[k])){
result[k] = target[k];
}
}
return result;
},
/**
* 合并 JSON 数据
* @param {*} oldJson
* @param {*} targetKey 如：images、textures，shapes，skeletons，animations 等
* @param {*} targetJson
* @param {Boolean} repeatable 是否可重复
*/
mergeObjJsonArray(oldJson, targetKey, targetJson, repeatable = true){
const targetData = targetJson[targetKey];
if (!tools.isEmpty(targetData)){
if (!oldJson || !oldJson[targetKey]){
oldJson[targetKey] = [];
}
if (repeatable){
// 用于标识 targetKey 所对应的所有 uuids，主要用于判断重复
if (!oldJson || !oldJson[`${targetKey}_uuids`]){
oldJson[`${targetKey}_uuids`] = [];
}
const uuids = oldJson[`${targetKey}_uuids`];
if (tools.isArray(targetData)){
for (let i = 0, len = targetData.length; i < len; i++) {
const item = targetData[i];
if (!uuids.includes(item.uuid)){
oldJson[targetKey].push(item);
oldJson[`${targetKey}_uuids`].push(item.uuid);
}
}
} else if (tools.isObject(targetData)){
if (!uuids.includes(targetData.uuid)){
oldJson[targetKey].push(targetData);
oldJson[`${targetKey}_uuids`].push(targetData.uuid);
}
}
} else {
if (tools.isArray(targetData)){
oldJson[targetKey].push(...targetData);
} else if (tools.isObject(targetData)){
oldJson[targetKey].push(targetData);
}
}
// 拷贝完毕之后，清除目标元素的指定key
delete targetJson[targetKey];
}
}
};
export default _OBJECT;
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