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568 | 2
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1
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1
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1
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1
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961
2
2
2
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25
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28
2
1387
2
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1
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1
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16
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45
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2
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2
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4
| var fs = require('fs');
var path = require('path');
var util = require('util');
var crypto = require('crypto');
var net = require('net');
/**
* Promise,后续Node.js会默认支持Promise,所以这里加个判断
* @type {[type]}
*/
if (!global.Promise) {
global.Promise = require('es6-promise').Promise;
}
/**
* 动态创建一个类
* 提供了继承、扩展、调用父级别方法等方法
* @return {[type]} [description]
*/
global.Class = function (prop, superCls) {
'use strict';
var cls = function () {
function T(args) {
for(var name in cls.__prop){
var val = cls.__prop[name];
this[name] = isObject(val) ? extend({}, val) : val;
}
//自动执行init方法
if(isFunction(this.init)){
//获取init返回值,如果返回一个promise,可以让后续执行在then之后
this.__initReturn = this.init.apply(this, args);
}
return this;
}
T.prototype = cls.prototype;
T.constructor = cls;
return new T(arguments);
};
//类的属性,不放在原型上,实例化的时候调用
cls.__prop = {};
cls.extend = function(prop){
if (isFunction(prop)) {
prop = prop();
}
if (isObject(prop)) {
for(var name in prop){
var val = prop[name];
if (isFunction(val)) {
this.prototype[name] = val;
}else{
cls.__prop[name] = isObject(val) ? extend({}, val) : val;
}
}
}
return this;
};
cls.inherits = function(superCls){
util.inherits(this, superCls);
//将父级的属性复制到当前类上
extend(cls.__prop, superCls.__prop);
return this;
};
if (superCls === true && isFunction(prop)) {
superCls = prop;
prop = undefined;
}
if (isFunction(superCls)) {
cls.inherits(superCls);
}
//调用父级方法
cls.prototype.super = cls.prototype.super_ = function(name, data){
//如果当前类没有这个方法,则直接返回。
//用于在a方法调用父级的b方法
if (!this[name]) {
this.super_c = null;
return;
}
var super_ = this.super_c ? this.super_c.super_ : this.constructor.super_;
if (!super_) {
this.super_c = null;
return;
}
//如果父级没有这个方法,那么直接返回
if (!isFunction(super_.prototype[name])) {
this.super_c = null;
return;
}
while(this[name] === super_.prototype[name] && super_.super_){
super_ = super_.super_;
}
this.super_c = super_;
if (!this.super_t) {
this.super_t = 1;
}
//如果参数不是数组,自动转为数组
if (!isArray(data)) {
data = arguments.length === 1 ? [] : [data];
}
var t = ++this.super_t;
var method = super_.prototype[name];
var ret;
switch(data.length){
case 0:
ret = method.call(this);
break;
case 1:
ret = method.call(this, data[0]);
break;
case 2:
ret = method.call(this, data[0], data[1]);
break;
default:
ret = method.apply(this, data);
}
if (t === this.super_t) {
this.super_c = null;
this.super_t = 0;
}
return ret;
};
if (prop) {
cls.extend(prop);
}
return cls;
};
/**
* extend, from jquery,具有深度复制功能
* @return {[type]} [description]
*/
global.extend = function(){
'use strict';
var args = [].slice.call(arguments);
var deep = true;
var target = args.shift();
if (isBoolean(target)) {
deep = target;
target = args.shift();
}
target = target || {};
var length = args.length;
var options, name, src, copy, copyAsArray, clone;
for(var i = 0; i < length; i++){
options = args[i] || {};
if (isFunction(options)) {
options = options();
}
for(name in options){
src = target[name];
copy = options[name];
if (src === copy) {
continue;
}
if (deep && copy && (isObject(copy) || (copyAsArray = isArray(copy) ))) {
if (copyAsArray) {
copyAsArray = false;
clone = src && isArray(src) ? src : [];
}else{
clone = src && isObject(src) ? src : {};
}
target[name] = extend(deep, clone, copy);
}else Eif (copy !== undefined) {
target[name] = copy;
}
}
}
return target;
};
//Object上toString方法
var toString = Object.prototype.toString;
/**
* 是否是boolean
* @param {[type]} obj
* @return {Boolean}
*/
global.isBoolean = function(obj){
'use strict';
return toString.call(obj) === '[object Boolean]';
};
/**
* 是否是数字
* @param {[type]} obj [description]
* @return {Boolean} [description]
*/
global.isNumber = function(obj){
'use strict';
return toString.call(obj) === '[object Number]';
};
/**
* 是否是个对象
* @param {[type]} obj [description]
* @return {Boolean} [description]
*/
global.isObject = function(obj){
'use strict';
if (isBuffer(obj)) {
return false;
}
return toString.call(obj) === '[object Object]';
};
/**
* 是否是字符串
* @param {[type]} obj [description]
* @return {Boolean} [description]
*/
global.isString = function(obj){
'use strict';
return toString.call(obj) === '[object String]';
};
/**
* 是否是个function
* @param {[type]} obj [description]
* @return {Boolean} [description]
*/
global.isFunction = function(obj){
'use strict';
return typeof obj === 'function';
};
/**
* 是否是日期
* @return {Boolean} [description]
*/
global.isDate = function(obj){
'use strict';
return util.isDate(obj);
};
/**
* 是否是正则
* @param {[type]} reg [description]
* @return {Boolean} [description]
*/
global.isRegexp = function(obj){
'use strict';
return util.isRegExp(obj);
};
/**
* 是否是个错误
* @param {[type]} obj [description]
* @return {Boolean} [description]
*/
global.isError = function(obj){
'use strict';
return util.isError(obj);
};
/**
* 判断对象是否为空
* @param {[type]} obj
* @return {Boolean}
*/
global.isEmpty = function(obj){
'use strict';
if (isObject(obj)) {
var key;
for(key in obj){
return false;
}
return true;
}else if (isArray(obj)) {
return obj.length === 0;
}else if (isString(obj)) {
return obj.length === 0;
}else if (isNumber(obj)) {
return obj === 0;
}else if (obj === null || obj === undefined) {
return true;
}else if (isBoolean(obj)) {
return !obj;
}
return false;
};
/**
* 是否是个标量
* @param {[type]} obj [description]
* @return {Boolean} [description]
*/
global.isScalar = function(obj){
'use strict';
return isBoolean(obj) || isNumber(obj) || isString(obj);
};
/**
* 是否是个数组
* @type {Boolean}
*/
global.isArray = Array.isArray;
/**
* 是否是IP
* @type {Boolean}
*/
global.isIP = net.isIP;
global.isIP4 = net.isIP4;
global.isIP6 = net.isIP6;
/**
* 是否是个文件
* @param {[type]} p [description]
* @return {Boolean} [description]
*/
global.isFile = function(p){
'use strict';
if (!fs.existsSync(p)) {
return false;
}
var stats = fs.statSync(p);
return stats.isFile();
};
/**
* 是否是个目录
* @param {[type]} p [description]
* @return {Boolean} [description]
*/
global.isDir = function(p){
'use strict';
if (!fs.existsSync(p)) {
return false;
}
var stats = fs.statSync(p);
return stats.isDirectory();
};
/**
* 是否是buffer
* @type {Boolean}
*/
global.isBuffer = Buffer.isBuffer;
/**
* 是否是个数字的字符串
* @param {[type]} obj [description]
* @return {Boolean} [description]
*/
var numberReg = /^((\-?\d*\.?\d*(?:e[+-]?\d*(?:\d?\.?|\.?\d?)\d*)?)|(0[0-7]+)|(0x[0-9a-f]+))$/i;
global.isNumberString = function(obj){
'use strict';
return numberReg.test(obj);
};
/**
* 判断是否是个promise
* @param {[type]} obj [description]
* @return {Boolean} [description]
*/
global.isPromise = function(obj){
'use strict';
return !!(obj && typeof obj.then === 'function');
};
/**
* 判断一个文件或者目录是否可写
* @param {[type]} p [description]
* @return {Boolean} [description]
*/
global.isWritable = function(p){
'use strict';
if (!fs.existsSync(p)) {
return false;
}
var stats = fs.statSync(p);
var mode = stats.mode;
var uid = process.getuid ? process.getuid() : 0;
var gid = process.getgid ? process.getgid() : 0;
var owner = uid === stats.uid;
var group = gid === stats.gid;
return !!(owner && (mode & parseInt('00200', 8)) ||
group && (mode & parseInt('00020', 8)) ||
(mode & parseInt('00002', 8)));
};
/**
* 递归创建目录,同步模式
* @param {[type]} p [description]
* @param {[type]} mode [description]
* @return {[type]} [description]
*/
global.mkdir = function(p, mode){
'use strict';
mode = mode || '0777';
if (fs.existsSync(p)) {
chmod(p, mode);
return true;
}
var pp = path.dirname(p);
if (fs.existsSync(pp)) {
fs.mkdirSync(p, mode);
}else{
mkdir(pp, mode);
mkdir(p, mode);
}
return true;
};
/**
* 递归的删除目录,返回promise
* @param string p 要删除的目录
* @param boolean reserve 是否保留当前目录,只删除子目录
* @return Promise
*/
global.rmdir = function(p, reserve){
'use strict';
if (!isDir(p)) {
return getPromise();
}
var deferred = getDefer();
fs.readdir(p, function(err, files){
if (err) {
return deferred.reject(err);
}
var promises = files.map(function(item){
var filepath = path.normalize(p + '/' + item);
if (isDir(filepath)) {
return rmdir(filepath, false);
}else{
var deferred = getDefer();
fs.unlink(filepath, function(err){
return err ? deferred.reject(err) : deferred.resolve();
})
return deferred.promise;
}
})
var promise = files.length === 0 ? getPromise() : Promise.all(promises);
return promise.then(function(){
Eif (!reserve) {
var deferred = getDefer();
fs.rmdir(p, function(err){
return err ? deferred.reject(err) : deferred.resolve();
})
return deferred.promise;
}
}).then(function(){
deferred.resolve();
}).catch(function(err){
deferred.reject(err);
})
})
return deferred.promise;
}
/**
* 修改目录或者文件权限
* @param {[type]} p [description]
* @param {[type]} mode [description]
* @return {[type]} [description]
*/
global.chmod = function(p, mode){
'use strict';
mode = mode || '0777';
if (!fs.existsSync(p)) {
return true;
}
return fs.chmodSync(p, mode);
};
/**
* 获取文件内容
* @param {[type]} file [description]
* @return {[type]} [description]
*/
global.getFileContent = function(file, encoding){
'use strict';
if (!fs.existsSync(file)) {
return '';
}
return fs.readFileSync(file, encoding || 'utf8');
};
/**
* 设置文件内容
* @param {[type]} file [description]
* @param {[type]} data [description]
* @return {[type]} [description]
*/
global.setFileContent = function(file, data){
'use strict';
var filepath = path.dirname(file);
mkdir(filepath);
return fs.writeFileSync(file, data);
};
/**
* 大写首字符
* @param {[type]} name [description]
* @return {[type]} [description]
*/
global.ucfirst = function(name){
'use strict';
name = (name || '') + '';
return name.substr(0,1).toUpperCase() + name.substr(1).toLowerCase();
};
/**
* 获取字符串的md5
* @param {[type]} str [description]
* @return {[type]} [description]
*/
global.md5 = function(str){
'use strict';
var instance = crypto.createHash('md5');
instance.update(str + '');
return instance.digest('hex');
};
/**
* 获取随机整数
* @return {[type]} [description]
*/
global.rand = function(min, max){
'use strict';
return Math.floor(min + Math.random() * (max - min + 1));
}
/**
* 生成一个promise,如果传入的参数是promise则直接返回
* @param {[type]} obj [description]
* @return {[type]} [description]
*/
global.getPromise = function(obj, reject){
'use strict';
if (isPromise(obj)) {
return obj;
}
if (reject) {
return Promise.reject(obj);
}
return Promise.resolve(obj);
};
/**
* 生成一个defer对象
* @return {[type]} [description]
*/
global.getDefer = function(){
'use strict';
var deferred = {};
deferred.promise = new Promise(function(resolve, reject){
deferred.resolve = resolve;
deferred.reject = reject;
});
return deferred;
};
/**
* 快速生成一个object
* @param {[type]} key [description]
* @param {[type]} value [description]
* @return {[type]} [description]
*/
global.getObject = function(key, value){
'use strict';
var obj = {};
if (!isArray(key)) {
obj[key] = value;
return obj;
}
key.forEach(function(item, i){
obj[item] = value[i];
});
return obj;
};
/**
* 将数组变成对象
* @param {[type]} arr [description]
* @param {[type]} key [description]
* @param {[type]} valueKeys [description]
* @return {[type]} [description]
*/
global.arrToObj = function(arr, key, valueKey){
'use strict';
var result = {};
var arrResult = [];
arr.forEach(function(item){
var keyValue = item[key];
if (valueKey === null) {
arrResult.push(keyValue);
}else if (valueKey) {
result[keyValue] = item[valueKey];
}else{
result[keyValue] = item;
}
})
return valueKey === null ? arrResult : result;
} |