@aaronngray/electron-spawn 中文文档教程

发布于 6年前 浏览 20 项目主页 更新于 3年前

electron-spawn

从命令行在无头电子(chromium)窗口中轻松运行代码

usage

$ npm i electron-prebuilt -g
$ npm i electron-spawn -g
$ echo "console.log('hello')" > foo.js
$ electron-spawn foo.js

您还可以导出一个函数,该函数接受参数以获取传递给您的程序的所有参数:

$ echo "module.exports = function (args) { console.log(args) }" > foo.js
$ electron-spawn foo.js bar baz
# outputs ['bar', 'baz']

或者您可以使用 process.argv 之类的一个普通的节点程序:

$ echo 'console.log(process.argv.slice(2))' > hello.js
$ electron-spawn hello.js beep boop
# outputs: ['beep', 'boop']

process.stdin 也可以工作:

process.stdin.on('data', function (buf) {
  console.log('buf=', buf)
})
$ echo beep boop | electron-spawn stdin.js
buf= <Buffer 62 65 65 70 20 62 6f 6f 70 0a>

api

var spawn = require('electron-spawn')

一个生成 electron 的

var electron = spawn(scriptname[, params..., execOptions])

函数

返回 传递给进程的参数列表

execOptions 是一个对象文字,用于设置有关进程如何生成

var spawn = require('electron-spawn')
var electron = spawn('foo.js', 'bar', 'baz', {
  detached: true
})
electron.stderr.on('data', function (data) {
  console.error(data.toString())
})
electron.stdout.on('data', function (data) {
  console.log(data.toString())
})

限制的选项:

  • cannot automatically yet exit your program like how node does when you have no more activity on the event loop
    But in your script you can call require('electron').remote.app.quit() to quit when it's done:
module.exports = function (args) {
  var img = new Image()
  img.onload = function () {
    require('electron').remote.app.quit()
  }
  img.src = 'http://example.com/cat.gif'
}

或者您可以像普通调用一样调用 process.exit()节点程序。

electron-spawn

run code easily inside of headless electron (chromium) windows from the command line

usage

$ npm i electron-prebuilt -g
$ npm i electron-spawn -g
$ echo "console.log('hello')" > foo.js
$ electron-spawn foo.js

you can also export a function that takes arguments to get all the arguments passed in to your program:

$ echo "module.exports = function (args) { console.log(args) }" > foo.js
$ electron-spawn foo.js bar baz
# outputs ['bar', 'baz']

or you can use process.argv like an ordinary node program:

$ echo 'console.log(process.argv.slice(2))' > hello.js
$ electron-spawn hello.js beep boop
# outputs: ['beep', 'boop']

process.stdin works too:

process.stdin.on('data', function (buf) {
  console.log('buf=', buf)
})
$ echo beep boop | electron-spawn stdin.js
buf= <Buffer 62 65 65 70 20 62 6f 6f 70 0a>

api

var spawn = require('electron-spawn')

return a function that spawn electron

var electron = spawn(scriptname[, params..., execOptions])

returns a child process running electron with the given scriptname

params are a list of arguments passed to the process

execOptions is an object literal to set options on how the process gets spawned

var spawn = require('electron-spawn')
var electron = spawn('foo.js', 'bar', 'baz', {
  detached: true
})
electron.stderr.on('data', function (data) {
  console.error(data.toString())
})
electron.stdout.on('data', function (data) {
  console.log(data.toString())
})

limitations:

  • cannot automatically yet exit your program like how node does when you have no more activity on the event loop
    But in your script you can call require('electron').remote.app.quit() to quit when it's done:
module.exports = function (args) {
  var img = new Image()
  img.onload = function () {
    require('electron').remote.app.quit()
  }
  img.src = 'http://example.com/cat.gif'
}

or you can call process.exit() like an ordinary node program.

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