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- 'use strict';
- /**
- * `password` type prompt
- */
- var chalk = require('chalk');
- var { map, takeUntil } = require('rxjs/operators');
- var Base = require('./base');
- var observe = require('../utils/events');
- function mask(input, maskChar) {
- input = String(input);
- maskChar = typeof maskChar === 'string' ? maskChar : '*';
- if (input.length === 0) {
- return '';
- }
- return new Array(input.length + 1).join(maskChar);
- }
- class PasswordPrompt extends Base {
- /**
- * Start the Inquiry session
- * @param {Function} cb Callback when prompt is done
- * @return {this}
- */
- _run(cb) {
- this.done = cb;
- var events = observe(this.rl);
- // Once user confirm (enter key)
- var submit = events.line.pipe(map(this.filterInput.bind(this)));
- var validation = this.handleSubmitEvents(submit);
- validation.success.forEach(this.onEnd.bind(this));
- validation.error.forEach(this.onError.bind(this));
- events.keypress
- .pipe(takeUntil(validation.success))
- .forEach(this.onKeypress.bind(this));
- // Init
- this.render();
- return this;
- }
- /**
- * Render the prompt to screen
- * @return {PasswordPrompt} self
- */
- render(error) {
- var message = this.getQuestion();
- var bottomContent = '';
- if (this.status === 'answered') {
- message += this.opt.mask
- ? chalk.cyan(mask(this.answer, this.opt.mask))
- : chalk.italic.dim('[hidden]');
- } else if (this.opt.mask) {
- message += mask(this.rl.line || '', this.opt.mask);
- } else {
- message += chalk.italic.dim('[input is hidden] ');
- }
- if (error) {
- bottomContent = '\n' + chalk.red('>> ') + error;
- }
- this.screen.render(message, bottomContent);
- }
- /**
- * When user press `enter` key
- */
- filterInput(input) {
- if (!input) {
- return this.opt.default == null ? '' : this.opt.default;
- }
- return input;
- }
- onEnd(state) {
- this.status = 'answered';
- this.answer = state.value;
- // Re-render prompt
- this.render();
- this.screen.done();
- this.done(state.value);
- }
- onError(state) {
- this.render(state.isValid);
- }
- onKeypress() {
- // If user press a key, just clear the default value
- if (this.opt.default) {
- this.opt.default = undefined;
- }
- this.render();
- }
- }
- module.exports = PasswordPrompt;
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