iofs/index.js

212 lines
4.1 KiB
JavaScript
Raw Blame History

This file contains ambiguous Unicode characters!

This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.

/**
*
* @authors yutent (yutent@doui.cc)
* @date 2015-12-28 14:28:38
*
*/
'use strict'
const FS = require('fs')
const PATH = require('path')
const ERROR_FN = (err, res) => {
if (err) {
console.error(err)
}
}
const Iofs = {
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} recursion [是否递归遍历子目录]
* @return {array} [返回目标目录所有文件名和子目录名, 不包括'.'和'..']
*/
ls(dir, recursion) {
try {
var list = FS.readdirSync(dir)
list.forEach((it, i) => {
list[i] = PATH.resolve(dir, it)
})
if (recursion) {
var 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
}
var updir = PATH.parse(file).dir
var 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
}
}
if (!!append) {
FS.appendFile(file, data, opt, ERROR_FN)
} else {
FS.writeFile(file, data, opt, ERROR_FN)
}
},
//修改权限
chmod(path, mode) {
FS.chmod(path, mode, ERROR_FN)
},
/**
* [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) {
var updir = PATH.parse(target).dir
if (!this.isdir(updir)) {
this.mkdir(updir)
}
FS.rename(origin, target, err => {
if (err) {
var rs = FS.createReadStream(origin)
var ws = FS.createWriteStream(target)
rs.pipe(ws)
rs.on('end', err => {
this.rm(origin)
})
}
})
},
cp(origin, target) {
var updir = PATH.parse(target).dir
if (!this.isdir(updir)) {
this.mkdir(updir)
}
var rs = FS.createReadStream(origin)
var 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) {
if (recursion) {
var list = this.ls(origin)
list.forEach(it => {
this.rm(it, this.isdir(it))
})
FS.rmdir(origin, ERROR_FN)
} else {
FS.unlink(origin, ERROR_FN)
}
},
/**
* [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) {
var updir = PATH.parse(dir).dir
if (!updir) {
return
}
if (!this.isdir(updir)) {
this.mkdir(updir)
}
FS.mkdir(dir, ERROR_FN)
},
/**
* [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 = Iofs
base on native fs module
JavaScript 100%