Node.js readStream.setRawMode()用法及代码示例

readStream.setRawMode()方法是‘tty’模块内的ReadStream类的内置应用程序编程接口，用于设置Read stream对象的原始模式以用作原始设备。

用法:

const readStream.setRawMode( mode )

参数：此方法将布尔值作为参数。

返回值：此方法不返回任何值。

范例1： 文件名：index.js

Javascript

// Node.js program to demonstrate the 
// readStream.setRawMode() method 
  
// Importing dgram module 
var dgram = require('dgram'); 
  
  
// Creating and initializing client 
// and server socket 
var client = dgram.createSocket("udp4"); 
var server = dgram.createSocket("udp4"); 
  
// Cathing the message event 
server.on("message", function (msg) { 
  
    // Creating and intializing a  
    // ReadStream object 
    let ReadStream = process.stdin; 
  
    // Setting the read stream Raw mode 
    // by using setRawMode() method 
    ReadStream.setRawMode(false); 
  
    // Checking if it is configured or not  
    // by using isRaw() method 
    const status = ReadStream.isRaw; 
  
    // Displaying the result 
    if (status) 
        process.stdout.write(msg + "configured" + "\n"); 
    else
        process.stdout.write(msg + "not configured" + "\n"); 
  
    // Exiting process 
    process.exit(); 
}) 
  
    // Binding server with port 
    .bind(1234, () => { 
    }); 
  
// Client sending message to server 
client.send("It is ", 0, 7, 1234, "localhost");

输出：

It is not configured

范例2： 文件名：index.js

Javascript

// Node.js program to demonstrate the 
// readStream.setRawMode() method 
  
// Creating and initializing a ReadStream object 
let ReadStream = process.stdin; 
  
// Setting the read stream Raw mode 
// by using setRawMode() method 
ReadStream.setRawMode(true); 
  
// Checking if it is configured or not  
// by using isRaw() method 
const status = ReadStream.isRaw; 
  
// Displaying the result 
if(status) 
    console.log("It is configured"); 
else
    console.log("It is not configured");

输出：

It is configured

使用以下命令运行index.js文件：

node index.js

参考：https://nodejs.org/dist/latest-v12.x/docs/api/tty.html#tty_readstream_setrawmode_mode

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注：本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 Node.js readStream.setRawMode() Method。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。