iofs/index.js

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JavaScript
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/**
*
* @authors yutent (yutent@doui.cc)
* @date 2015-12-28 14:28:38
*
*/
'use strict'
const FS = require('fs')
const PATH = require('path')
class Iofs {
constructor() {
this.origin = FS
}
/**
* [cat 文件读取]
* @param {String} file [文件路径]
* @param {Function} cb [回调] 可选
*/
cat(file) {
try {
return FS.readFileSync(file)
} catch (err) {
if (err) {
console.error(err + '')
}
return null
}
}
/**
* [ls 读取整个目录(不遍历子目录)]
* @param {string} dir [目标路径]
* @param {boolean} child [是否遍历子目录]
* @return {array} [返回目标目录所有文件名和子目录名, 不包括'.'和'..']
*/
ls(dir, child) {
try {
let list = FS.readdirSync(dir)
list = list.map(it => {
return PATH.resolve(dir, it)
})
if (!child) {
return list
}
let tmp = list.concat()
tmp.forEach(it => {
if (this.isdir(it)) {
list = list.concat(this.ls(it, true))
}
})
return list
} catch (err) {
if (err) {
console.error(err + '')
}
return null
}
}
/**
* [echo 写文件]
* @param {String|Buffer|Number} data [要写入的数据]
* @param {String} file [要写的文件]
* @param {Boolean} append [是否在后面追加,默认否]
* @param {String} encode [编码, 默认utf8]
*/
echo(data, file, append, encode) {
if (!file) {
return data
}
let updir = PATH.parse(file).dir
let opt = {}
if (!this.isdir(updir)) {
this.mkdir(updir)
}
if (append && typeof append === 'string') {
encode = append
append = false
opt.encoding = encode
} else {
if (typeof encode === 'string') {
opt.encoding = encode
}
}
try {
if (!!append) {
FS.appendFileSync(file, data, opt)
} else {
FS.writeFileSync(file, data, opt)
}
} catch (err) {
if (err) {
console.error(err + '')
}
}
}
//修改权限
chmod(path, mode) {
try {
FS.chmodSync(path, mode)
} catch (err) {
if (err) {
console.error(err + '')
}
}
}
/**
* [mv 移动文件,兼具重命名功能]
* @param {String} origin [原路径/原名]
* @param {String} target [目标路径/新名]
*/
mv(origin, target) {
let updir = PATH.parse(target).dir
if (!this.isdir(updir)) {
this.mkdir(updir)
}
try {
FS.renameSync(origin, target)
} catch (e) {
let rs = FS.createReadStream(origin)
let ws = FS.createWriteStream(target)
rs.pipe(ws)
rs.on('end', err => {
this.rm(origin)
})
}
}
cp(origin, target) {
let updir = PATH.parse(target).dir
if (!this.isdir(updir)) {
this.mkdir(updir)
}
let rs = FS.createReadStream(origin)
let ws = FS.createWriteStream(target)
rs.pipe(ws)
}
/**
* [rm 删除文件/目录]
* @param {[type]} origin [源文件/目录路径]
* @param {[type]} recursion [是否递归删除若删除目录此值须为true]
*/
rm(origin, recursion) {
try {
if (!!recursion) {
let list = this.ls(origin)
list.forEach(it => {
this.rm(it, this.isdir(it))
})
FS.rmdirSync(origin)
} else {
FS.unlinkSync(origin)
}
} catch (err) {
if (err) {
console.error(err + '')
}
}
}
/**
* [stat 返回文件/目录的状态信息]
* @param {[type]} path [目标路径]
*/
stat(path) {
try {
return FS.statSync(path)
} catch (err) {
return null
}
}
/**
* [isdir 判断目标是否为目录]
* @param {String} path [目标路径]
*/
isdir(path) {
try {
return this.stat(path).isDirectory()
} catch (err) {
return false
}
}
/**
* [mkdir 新建目录]
* @param {String} dir [目标路径]
*/
mkdir(dir) {
let updir = PATH.parse(dir).dir
if (!updir) {
return
}
if (!this.isdir(updir)) {
this.mkdir(updir)
}
try {
FS.mkdirSync(dir)
} catch (err) {
if (err) {
console.error(err + '')
}
}
}
/**
* [exists 判断目标(文件/目录)是否存在]
* @param {String} file [目标路径]
*/
exists(file) {
return FS.existsSync(file)
}
}
module.exports = new Iofs()
base on native fs module
JavaScript 100%