spacevim/docs/cn/api/job.md
JIe 2bb7059579
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Markdown

---
title: "job 接口"
description: "兼容 neovim 和 vim 的异步协同接口,对于旧版 vim 采用非异步机制"
lang: zh
---
# [可用接口](../) >> job
<!-- vim-markdown-toc GFM -->
- [简介](#简介)
- [函数及变量](#函数及变量)
- [使用示例](#使用示例)
<!-- vim-markdown-toc -->
## 简介
`job` 接口提供了一套可以兼容 neovim 和 vim 的异步控制机制,具体实现模型是参考的 neovim 的模型。
## 函数及变量
| 名称 | 描述 |
| ------------------ | ---------------------------- |
| `start(cmd, argv)` | 开始一个 job, 并返回 job id. |
| `send(id, data)` | 传递数据至指定 id 的 job |
| `stop(id)` | 终止指定 id 的 job |
| `status(id)` | 查看指定 id 的 job 的状态 |
| `list()` | 列出所有 job |
以上这个 api 仅提供了基础的 job 函数,当你的脚本需要用到 job 高级功能时,建议直接使用 neovim 或 vim 内置函数。
## 使用示例
以下为通过该 API 异步执行命令 `python test.py`,并设置相关的回调函数:
```vim
" 导入 job API 并赋值给 s:JOB
let s:JOB = SpaceVim#api#import('job')
" 定义回调函数,这里定义了三个回调函数,分别对应 stdout stderr 以及 exit。
function! s:on_stdout(id, data, event) abort
" do something with stdout
endfunction
function! s:on_stderr(id, data, event) abort
" do something with stderr
endfunction
function! s:on_exit(id, data, event) abort
" handle exit code
endfunction
let cmd = ['python', 'test.py']
call s:JOB.start(cmd,
\ {
\ 'on_stdout' : function('s:on_stdout'),
\ 'on_stderr' : function('s:on_stderr'),
\ 'on_exit' : function('s:on_exit'),
\ }
\ )
```
以上代码可以在 vim 或者 neovim 中异步运行命令,甚至对于老版本的 vim 也兼容,但是在老版本 vim 中执行的时候不是异步的。