Create readline interface to use in prompts. 

Create a readline interface with default settings to use in prompts.

jonschlinkert

readline-ui

Create readline interface to use in prompts.

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var debug = require('debug')('readline-ui');

var Emitter = require('component-emitter');

var stringWidth = require('string-width');

 * Create a readline interface to use in prompts

    var ui = Object.create(UI.prototype);

  debug('initializing from <%s>', __filename);

  this.options = utils.createOptions(options);

UI.prototype.initInterface = function() {

    this.rl = utils.createInterface(this.options);

  this.forceClose = this.forceClose.bind(this);

  this.onKeypress = this.onKeypress.bind(this);

  this.rl.input.on('keypress', self.onKeypress);

      self.emit('line', line, {name: 'line', value: line});

UI.prototype.onKeypress = function(input, key) {

 * Render the prompt with the given `input` and optional `footer`.

UI.prototype.render = function(input, footer) {

  // Write message to screen and setPrompt to control backspace

  // Remove the last line from our prompt. We can't rely

  // on the input of rl.line (mainly because of the password

  // prompt), so just rely on it's length.

    prompt = prompt.slice(0, -this.rl.line.length);

  // setPrompt will change cursor position, now we can get correct value

  input = utils.forceLineReturn(input, width);

    footer = utils.forceLineReturn(footer, width);

  // Manually insert an extra line if we're at the end of

  // the line. This prevents the cursor from appearing at

  var fullContent = input + (footer ? '\n' + String(footer) : '');

  // We need to consider parts of the prompt under the

  // cursor as part of the bottom string in order to

  var promptLineUpDiff = Math.floor(rawLine.length / width) - cursorPos.rows;

  var footerHeight = promptLineUpDiff + (footer ? utils.height(footer) : 0);

  // Reset cursor at the beginning of the line

  var lastLine = utils.lastLine(fullContent);

  utils.left(this.rl, stringWidth(lastLine));

  var newPos = utils.unstyle(input).length;

  this.height = utils.height(fullContent);

 * Remove `n` lines from the bottom of the terminal

 * @param {Number} `lines` Number of lines to remove

 * Pause the input stream, allowing it to be resumed later if necessary.

 * Close the `readline.Interface` instance and relinquish

 * control over the input and output streams. Also removes

 * event listeners, and restores/unmutes prompt functionality.

 * Close the interface when the keypress is `^C`

 * Returns an "indentity" function that calls `.close()`,

 * which can be used as the final `.then()` function with

 * Default method for writing a prompt to the terminal.

  this.rl.output.write(newline !== false ? '\n' : '');

 * Mutes the output stream that was used to create the

 * readline interface, and returns a function for unmuting the

 * Unmute then write to the output stream that was used

 * to create the readline interface, then re-mute the stream.

  this.rl.output.write(util.inspect.apply(util, input));

  this.rl.output.write(util.inspect.apply(util, arguments));

 * Expose `UI.create` for using a single instance across

module.exports.create = function(options) {

  "description": "Create readline interface to use in prompts.",

  "homepage": "https://github.com/enquirer/readline-ui",

  "author": "Jon Schlinkert (https://github.com/jonschlinkert)",

    "url": "https://github.com/enquirer/readline-ui/issues"

		@@ -49,3 +49,3 @@ 'use strict';
		this.rl.input.on('keypress', self.onKeypress);
		this.rl.resume();
		this.resume();

		@@ -177,2 +177,11 @@ this.rl.on('line', function(line) {
		/**
		* Resume the input stream.
		* @api public
		*/

		UI.prototype.resume = function() {
		this.rl.resume();
		};

		/**
		* Pause the input stream, allowing it to be resumed later if necessary.
		@@ -238,2 +247,30 @@ * @api public
		/**
		* Mutes the output stream that was used to create the
		* readline interface, and returns a function for unmuting the
		* stream. This is useful in unit tests.
		*
		* ```js
		* // mute the stream
		* var unmute = ui.mute();
		*
		* // unmute the stream
		* unmute();
		* ```
		* @return {Function}
		* @api public
		*/

		UI.prototype.mute = function() {
		var rl = this.rl;
		var unmute = rl.output.unmute;
		rl.output.unmute = function() {};
		rl.output.mute();

		return function() {
		rl.output.unmute = unmute;
		unmute();
		};
		};

		/**
		* Unmute then write to the output stream that was used
		@@ -248,3 +285,3 @@ * to create the readline interface, then re-mute the stream.
		this.rl.output.unmute();
		this.rl.output.write(util.inspect.apply(util, input));
		this.rl.output.write(util.inspect.apply(util, arguments));
		this.rl.output.mute();
		@@ -251,0 +288,0 @@ };

		{
		"name": "readline-ui",
		"description": "Create readline interface to use in prompts.",
		"version": "2.2.1",
		"version": "2.2.2",
		"homepage": "https://github.com/enquirer/readline-ui",
		@@ -6,0 +6,0 @@ "author": "Jon Schlinkert (https://github.com/jonschlinkert)",

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