Question

我在node.js中寻找此功能，但我还没有找到它我可以自己实施吗？据我所知，node.js在启动时没有加载任何文件（就像Bash与.bashrc一样）并且我没有注意到以某种方式覆盖shell提示符。

有没有办法在不编写自定义shell的情况下实现它？

Answer 1

你可以修补REPL：

var repl = require('repl').start()
var _complete = repl.complete
repl.complete = function(line) {
  ...
  _complete.apply(this, arguments)
}

Answer 2

仅作为参考。

readline模块具有readline.createInterface(options)方法，该方法接受使标签完成的可选completer函数。

function completer(line) {
  var completions = '.help .error .exit .quit .q'.split(' ')
  var hits = completions.filter(function(c) { return c.indexOf(line) == 0 })
  // show all completions if none found
  return [hits.length ? hits : completions, line]
}

和

function completer(linePartial, callback) {
  callback(null, [['123'], linePartial]);
}

链接到api文档：http://nodejs.org/api/readline.html#readline_readline_createinterface_options

Answer 3

您可以使用如下所示的完成函数来实现制表符功能。

const readline = require('readline');

/*
 * This function returns an array of matched strings that starts with given
 * line, if there is not matched string then it return all the options
 */
var autoComplete = function completer(line) {
  const completions = 'var const readline console globalObject'.split(' ');
  const hits = completions.filter((c) => c.startsWith(line));

  // show all completions if none found
  return [hits.length ? hits : completions, line];
}

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  completer: autoComplete
});

rl.setPrompt("Type some character and press Tab key for auto completion....\n");


rl.prompt();
rl.on('line', (data) => {
  console.log(`Received: ${data}`);
});

参考： https://self-learning-java-tutorial.blogspot.com/2018/10/nodejs-readlinecreateinterfaceoptions_2.html

如何在node.js shell中实现tab完成？

3 个答案: