CODEWITHSUNDEEP
node.jscmd
user3467713
user3467713

Reputation: 161

Node.js file/folder auto completion on user input

I'm creating a cmd program in Node.js that receives user input and one of those inputs is a folder.

Now I want to make it easier for the user to choose a folder (like the cmd autocompletion for files when using commands such as 'cd'), rather than actually type the whole path.

Is there any best practice for doing that?

Thanks in advance!

Upvotes: 2

Views: 1121

Answers (2)

user3467713
user3467713

Reputation: 161

Ok, so after looking at what jiyinyiyong answered I was able to get what I wanted.

Basically this is it:

var readline = require('readline');
var fs = require('fs');

function completer(line) {
  var currAddedDir = (line.indexOf('/') != - 1) ? line.substring(0, line.lastIndexOf('/') + 1) : '';
  var currAddingDir = line.substr(line.lastIndexOf('/') + 1);
  var path = __dirname + '/' + currAddedDir;
  var completions = fs.readdirSync(path);
  var hits = completions.filter(function(c) { return c.indexOf(currAddingDir) === 0});

  var strike = [];
  if (hits.length === 1) strike.push(currAddedPath + hits[0] + '/');

  return (strike.length) ? [strike, line] : [hits.length ? hits : completions, line];
}

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

rl.question('whatever', function(answer) {
  // Do what ever
});

Upvotes: 1

jiyinyiyong
jiyinyiyong

Reputation: 4713

I saw someone implemented that in cofmon before. So these links can helpful:

Upvotes: 1

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