231 lines
6.2 KiB
JavaScript
231 lines
6.2 KiB
JavaScript
"use strict";
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function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
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function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
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const color = require('kleur');
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const Prompt = require('./prompt');
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const _require = require('sisteransi'),
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cursor = _require.cursor,
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erase = _require.erase;
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const _require2 = require('../util'),
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style = _require2.style,
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figures = _require2.figures,
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clear = _require2.clear,
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lines = _require2.lines;
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const isNumber = /[0-9]/;
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const isDef = any => any !== undefined;
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const round = (number, precision) => {
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let factor = Math.pow(10, precision);
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return Math.round(number * factor) / factor;
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};
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/**
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* NumberPrompt Base Element
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* @param {Object} opts Options
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* @param {String} opts.message Message
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* @param {String} [opts.style='default'] Render style
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* @param {Number} [opts.initial] Default value
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* @param {Number} [opts.max=+Infinity] Max value
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* @param {Number} [opts.min=-Infinity] Min value
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* @param {Boolean} [opts.float=false] Parse input as floats
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* @param {Number} [opts.round=2] Round floats to x decimals
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* @param {Number} [opts.increment=1] Number to increment by when using arrow-keys
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* @param {Function} [opts.validate] Validate function
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* @param {Stream} [opts.stdin] The Readable stream to listen to
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* @param {Stream} [opts.stdout] The Writable stream to write readline data to
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* @param {String} [opts.error] The invalid error label
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*/
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class NumberPrompt extends Prompt {
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constructor(opts = {}) {
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super(opts);
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this.transform = style.render(opts.style);
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this.msg = opts.message;
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this.initial = isDef(opts.initial) ? opts.initial : '';
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this.float = !!opts.float;
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this.round = opts.round || 2;
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this.inc = opts.increment || 1;
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this.min = isDef(opts.min) ? opts.min : -Infinity;
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this.max = isDef(opts.max) ? opts.max : Infinity;
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this.errorMsg = opts.error || `Please Enter A Valid Value`;
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this.validator = opts.validate || (() => true);
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this.color = `cyan`;
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this.value = ``;
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this.typed = ``;
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this.lastHit = 0;
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this.render();
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}
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set value(v) {
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if (!v && v !== 0) {
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this.placeholder = true;
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this.rendered = color.gray(this.transform.render(`${this.initial}`));
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this._value = ``;
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} else {
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this.placeholder = false;
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this.rendered = this.transform.render(`${round(v, this.round)}`);
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this._value = round(v, this.round);
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}
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this.fire();
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}
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get value() {
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return this._value;
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}
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parse(x) {
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return this.float ? parseFloat(x) : parseInt(x);
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}
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valid(c) {
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return c === `-` || c === `.` && this.float || isNumber.test(c);
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}
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reset() {
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this.typed = ``;
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this.value = ``;
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this.fire();
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this.render();
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}
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abort() {
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let x = this.value;
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this.value = x !== `` ? x : this.initial;
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this.done = this.aborted = true;
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this.error = false;
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this.fire();
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this.render();
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this.out.write(`\n`);
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this.close();
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}
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validate() {
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var _this = this;
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return _asyncToGenerator(function* () {
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let valid = yield _this.validator(_this.value);
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if (typeof valid === `string`) {
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_this.errorMsg = valid;
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valid = false;
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}
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_this.error = !valid;
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})();
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}
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submit() {
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var _this2 = this;
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return _asyncToGenerator(function* () {
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yield _this2.validate();
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if (_this2.error) {
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_this2.color = `red`;
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_this2.fire();
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_this2.render();
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return;
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}
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let x = _this2.value;
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_this2.value = x !== `` ? x : _this2.initial;
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_this2.done = true;
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_this2.aborted = false;
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_this2.error = false;
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_this2.fire();
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_this2.render();
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_this2.out.write(`\n`);
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_this2.close();
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})();
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}
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up() {
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this.typed = ``;
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if (this.value >= this.max) return this.bell();
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this.value += this.inc;
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this.color = `cyan`;
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this.fire();
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this.render();
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}
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down() {
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this.typed = ``;
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if (this.value <= this.min) return this.bell();
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this.value -= this.inc;
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this.color = `cyan`;
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this.fire();
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this.render();
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}
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delete() {
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let val = this.value.toString();
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if (val.length === 0) return this.bell();
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this.value = this.parse(val = val.slice(0, -1)) || ``;
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this.color = `cyan`;
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this.fire();
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this.render();
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}
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next() {
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this.value = this.initial;
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this.fire();
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this.render();
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}
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_(c, key) {
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if (!this.valid(c)) return this.bell();
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const now = Date.now();
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if (now - this.lastHit > 1000) this.typed = ``; // 1s elapsed
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this.typed += c;
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this.lastHit = now;
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this.color = `cyan`;
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if (c === `.`) return this.fire();
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this.value = Math.min(this.parse(this.typed), this.max);
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if (this.value > this.max) this.value = this.max;
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if (this.value < this.min) this.value = this.min;
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this.fire();
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this.render();
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}
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render() {
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if (this.closed) return;
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if (!this.firstRender) {
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if (this.outputError) this.out.write(cursor.down(lines(this.outputError) - 1) + clear(this.outputError));
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this.out.write(clear(this.outputText));
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}
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super.render();
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this.outputError = ''; // Print prompt
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this.outputText = [style.symbol(this.done, this.aborted), color.bold(this.msg), style.delimiter(this.done), !this.done || !this.done && !this.placeholder ? color[this.color]().underline(this.rendered) : this.rendered].join(` `); // Print error
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if (this.error) {
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this.outputError += this.errorMsg.split(`\n`).reduce((a, l, i) => a + `\n${i ? ` ` : figures.pointerSmall} ${color.red().italic(l)}`, ``);
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}
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this.out.write(erase.line + cursor.to(0) + this.outputText + cursor.save + this.outputError + cursor.restore);
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}
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}
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module.exports = NumberPrompt; |