优化写操作

master
宇天 2019-07-16 15:03:53 +08:00
parent 0c79c47b19
commit d82c4e04b4
4 changed files with 103 additions and 120 deletions

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@ -1,23 +1,28 @@
# 1.1.0 / 2018-05-24
# 1.2.0 / 2019-07-16
* [U] 优化结构
* [U] 部分写操作改为异步
* [add] add error log output
* optimize `ls` method
* rename `this.self` to `this.origin`
# 1.1.0 / 2018-05-24
* [A] 增加异常信息输出
* [U] 优化`ls`API
* [U] 重命名 `this.self``this.origin`
# 1.0.3 / 2017-12-23
* [D] 删除异常信息输出
* [del] delete the log output
# 1.0.2 / 2017-11-20
* [F] 修复非空目录无法删除的bug
* [fixed] Fixed remove the dir not empty call error.
# 1.0.1 / 2017-04-24
* [A] `ls`方法当第2个参数为`true`的时候,可以遍历子目录
* [add] ls function can recur list child folder with second para set to be true.
# 1.0.0 / 2017-02-26
* new project
* 初始化项目

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@ -1,30 +1,30 @@
![module info](https://nodei.co/npm/iofs.png?downloads=true&downloadRank=true&stars=true)
# iofs
> `iofs` is a bash-like module for reading and writing files on Node.js. It base on Node.js's native `fs` module.
> `iofs`是一个基于原生`fs`模块封装的工具, 旨在提供更加方便实用一些常用的API方法(同步), API习惯参考了`bash shell`, 习惯用命令行的朋友, 可能会比较亲切。
## property
## 属性
### self
> It return the native `fs` module for more requests.
### origin
> 返回原生的`fs`模块对象, 方便调用一些未封装的额外功能
## API
## APIs
### cat(file)
- file `<String>`
### .cat(file)
- file `<String>` 文件路径
> Just like bash's cat, it will read a file and return a Buffer.
> 读取文件, 返回一个`Buffer对象`
### ls(path, child)
### .ls(path, recursion)
- path `<String>`
- child `<Boolean>`
- recursion `<Boolean>`
> List all files and folders of the path given exclude '.' and '..'. I t return an array.
> If para `child` is set to be ture, it will recur list all files of child dir.
> 列出指定目录下的所有文件&目录, 不包括 '.' and '..'. 结果返回一个数组.
> 如果参数`recursion`设为ture, 则会递归遍历所有子目录.
### echo(data, file[, append][, encode])
@ -33,16 +33,16 @@
- append `<Boolean>` optional
- encode `<String>` optional
> Write/Append data to a file. creating the file if it does not yet exist.
> If `append` is set true, it will append data to the file.
> Default `encode` is utf8.
> 写数据到指定文件中. 如果指定文件不存在, 则自动生成.
> 如果`append`设为true, 则往文件后面追加数据, 不会覆盖.
> `encode`为指定编码, 默认utf8.
```javascript
let fs = require('iofs')
var fs = require('iofs')
fs.echo('hello ', 'test.txt') // replacing test.txt if it exists.
fs.echo('hello ', 'test.txt') // 如果test.txt存在, 则覆盖.
fs.echo('world', 'test.txt', true) // append the data to test.txt
fs.echo('world', 'test.txt', true) // 不会覆盖, 只会追加到 test.txt中
```
@ -53,11 +53,11 @@ fs.echo('world', 'test.txt', true) // append the data to test.txt
- file `<String>` | `<Buffer>`
- mode `<Integer>`
> Changes the mode of the file specified whose pathname is given.
> 修改文件&目录的权限.
```javascript
fs.chmod('test.txt', 777) // replacing test.txt if it exists.
fs.chmod('test.txt', 777)
```
@ -66,7 +66,7 @@ fs.chmod('test.txt', 777) // replacing test.txt if it exists.
- from `<String>`
- to `<String>`
> Move a fil to the target location. It can also use to renaming a file.
> 移动文件, 支持跨磁盘移动; 同时具备重命名功能。
@ -74,7 +74,7 @@ fs.chmod('test.txt', 777) // replacing test.txt if it exists.
- from `<String>`
- to `<String>`
> Copy a fil to the target location.
> 复制文件.
@ -82,7 +82,7 @@ fs.chmod('test.txt', 777) // replacing test.txt if it exists.
- path `<String>`
- recursion `<Boolean>`
> Delete a file or a folder. If path is a folder, `recursion` must be set to true.
> 删除文件&目录, 如果要递归删除所以子目录 `recursion`必须设为true.
```javascript
@ -97,24 +97,24 @@ fs.rm('./foo', true)
### stat(path)
- path `<String>`
> Returns an instance of fs.Stats.
> 返回文件的状态信息, 如修改时间, 文件大小等
### isdir(path)
- path `<String>`
> Return true if the path is a folder, and false when it is a file or not yet exists.
> 判断指定目录是否为一个目录, 路径不存在或者不是目录都会返回 false.
### mkdir(path)
- path `<String>`
> Build a folder in where you want.
> 创建目录, 可自动创建上级目录(如不存在)
### exists(path)
- path `<String>`
> Return true if the path exists, and false not.
> 判断文件&目录是否存在

144
index.js
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@ -9,10 +9,14 @@
const FS = require('fs')
const PATH = require('path')
class Iofs {
constructor() {
this.origin = FS
const ERROR_FN = (err, res) => {
if (err) {
console.error(err)
}
}
const Iofs = {
origin: FS,
/**
* [cat 文件读取]
@ -28,32 +32,30 @@ class Iofs {
}
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]
* @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'.''..']
*/
ls(dir, child) {
ls(dir, recursion) {
try {
let list = FS.readdirSync(dir)
var list = FS.readdirSync(dir)
list = list.map(it => {
return PATH.resolve(dir, it)
list.forEach((it, i) => {
list[i] = PATH.resolve(dir, it)
})
if (!child) {
return list
if (recursion) {
var tmp = list.concat()
tmp.forEach(it => {
if (this.isdir(it)) {
list = list.concat(this.ls(it, true))
}
})
}
let tmp = list.concat()
tmp.forEach(it => {
if (this.isdir(it)) {
list = list.concat(this.ls(it, true))
}
})
return list
} catch (err) {
if (err) {
@ -61,7 +63,7 @@ class Iofs {
}
return null
}
}
},
/**
* [echo 写文件]
@ -75,8 +77,8 @@ class Iofs {
return data
}
let updir = PATH.parse(file).dir
let opt = {}
var updir = PATH.parse(file).dir
var opt = {}
if (!this.isdir(updir)) {
this.mkdir(updir)
}
@ -91,29 +93,17 @@ class Iofs {
}
}
try {
if (!!append) {
FS.appendFileSync(file, data, opt)
} else {
FS.writeFileSync(file, data, opt)
}
} catch (err) {
if (err) {
console.error(err + '')
}
if (!!append) {
FS.appendFile(file, data, opt, ERROR_FN)
} else {
FS.writeFile(file, data, opt, ERROR_FN)
}
}
},
//修改权限
chmod(path, mode) {
try {
FS.chmodSync(path, mode)
} catch (err) {
if (err) {
console.error(err + '')
}
}
}
FS.chmod(path, mode, ERROR_FN)
},
/**
* [mv 移动文件,兼具重命名功能]
@ -121,35 +111,35 @@ class Iofs {
* @param {String} target [目标路径/新名]
*/
mv(origin, target) {
let updir = PATH.parse(target).dir
var 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)
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)
})
}
}
rs.pipe(ws)
rs.on('end', err => {
this.rm(origin)
})
}
})
},
cp(origin, target) {
let updir = PATH.parse(target).dir
var updir = PATH.parse(target).dir
if (!this.isdir(updir)) {
this.mkdir(updir)
}
let rs = FS.createReadStream(origin)
let ws = FS.createWriteStream(target)
var rs = FS.createReadStream(origin)
var ws = FS.createWriteStream(target)
rs.pipe(ws)
}
},
/**
* [rm 删除文件/目录]
@ -157,22 +147,16 @@ class Iofs {
* @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 + '')
}
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]
@ -184,7 +168,7 @@ class Iofs {
} catch (err) {
return null
}
}
},
/**
* [isdir 判断目标是否为目录]
@ -196,14 +180,14 @@ class Iofs {
} catch (err) {
return false
}
}
},
/**
* [mkdir 新建目录]
* @param {String} dir [目标路径]
*/
mkdir(dir) {
let updir = PATH.parse(dir).dir
var updir = PATH.parse(dir).dir
if (!updir) {
return
}
@ -212,14 +196,8 @@ class Iofs {
this.mkdir(updir)
}
try {
FS.mkdirSync(dir)
} catch (err) {
if (err) {
console.error(err + '')
}
}
}
FS.mkdir(dir, ERROR_FN)
},
/**
* [exists 判断目标(文件/目录)是否存在]
@ -230,4 +208,4 @@ class Iofs {
}
}
module.exports = new Iofs()
module.exports = Iofs

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@ -1,6 +1,6 @@
{
"name": "iofs",
"version": "1.1.0",
"version": "1.2.0",
"description": "Base on native fs module, for easy using.",
"main": "index.js",
"repository": {