basant307/AI_Governance_Project

1"use strict";2 3function 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); } }4 5function _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); }); }; }6 7const color = require('kleur');8 9const Prompt = require('./prompt');10 11const _require = require('sisteransi'),12      erase = _require.erase,13      cursor = _require.cursor;14 15const _require2 = require('../util'),16      style = _require2.style,17      clear = _require2.clear,18      lines = _require2.lines,19      figures = _require2.figures;20/**21 * TextPrompt Base Element22 * @param {Object} opts Options23 * @param {String} opts.message Message24 * @param {String} [opts.style='default'] Render style25 * @param {String} [opts.initial] Default value26 * @param {Function} [opts.validate] Validate function27 * @param {Stream} [opts.stdin] The Readable stream to listen to28 * @param {Stream} [opts.stdout] The Writable stream to write readline data to29 * @param {String} [opts.error] The invalid error label30 */31 32 33class TextPrompt extends Prompt {34  constructor(opts = {}) {35    super(opts);36    this.transform = style.render(opts.style);37    this.scale = this.transform.scale;38    this.msg = opts.message;39    this.initial = opts.initial || ``;40 41    this.validator = opts.validate || (() => true);42 43    this.value = ``;44    this.errorMsg = opts.error || `Please Enter A Valid Value`;45    this.cursor = Number(!!this.initial);46    this.cursorOffset = 0;47    this.clear = clear(``, this.out.columns);48    this.render();49  }50 51  set value(v) {52    if (!v && this.initial) {53      this.placeholder = true;54      this.rendered = color.gray(this.transform.render(this.initial));55    } else {56      this.placeholder = false;57      this.rendered = this.transform.render(v);58    }59 60    this._value = v;61    this.fire();62  }63 64  get value() {65    return this._value;66  }67 68  reset() {69    this.value = ``;70    this.cursor = Number(!!this.initial);71    this.cursorOffset = 0;72    this.fire();73    this.render();74  }75 76  exit() {77    this.abort();78  }79 80  abort() {81    this.value = this.value || this.initial;82    this.done = this.aborted = true;83    this.error = false;84    this.red = false;85    this.fire();86    this.render();87    this.out.write('\n');88    this.close();89  }90 91  validate() {92    var _this = this;93 94    return _asyncToGenerator(function* () {95      let valid = yield _this.validator(_this.value);96 97      if (typeof valid === `string`) {98        _this.errorMsg = valid;99        valid = false;100      }101 102      _this.error = !valid;103    })();104  }105 106  submit() {107    var _this2 = this;108 109    return _asyncToGenerator(function* () {110      _this2.value = _this2.value || _this2.initial;111      _this2.cursorOffset = 0;112      _this2.cursor = _this2.rendered.length;113      yield _this2.validate();114 115      if (_this2.error) {116        _this2.red = true;117 118        _this2.fire();119 120        _this2.render();121 122        return;123      }124 125      _this2.done = true;126      _this2.aborted = false;127 128      _this2.fire();129 130      _this2.render();131 132      _this2.out.write('\n');133 134      _this2.close();135    })();136  }137 138  next() {139    if (!this.placeholder) return this.bell();140    this.value = this.initial;141    this.cursor = this.rendered.length;142    this.fire();143    this.render();144  }145 146  moveCursor(n) {147    if (this.placeholder) return;148    this.cursor = this.cursor + n;149    this.cursorOffset += n;150  }151 152  _(c, key) {153    let s1 = this.value.slice(0, this.cursor);154    let s2 = this.value.slice(this.cursor);155    this.value = `${s1}${c}${s2}`;156    this.red = false;157    this.cursor = this.placeholder ? 0 : s1.length + 1;158    this.render();159  }160 161  delete() {162    if (this.isCursorAtStart()) return this.bell();163    let s1 = this.value.slice(0, this.cursor - 1);164    let s2 = this.value.slice(this.cursor);165    this.value = `${s1}${s2}`;166    this.red = false;167 168    if (this.isCursorAtStart()) {169      this.cursorOffset = 0;170    } else {171      this.cursorOffset++;172      this.moveCursor(-1);173    }174 175    this.render();176  }177 178  deleteForward() {179    if (this.cursor * this.scale >= this.rendered.length || this.placeholder) return this.bell();180    let s1 = this.value.slice(0, this.cursor);181    let s2 = this.value.slice(this.cursor + 1);182    this.value = `${s1}${s2}`;183    this.red = false;184 185    if (this.isCursorAtEnd()) {186      this.cursorOffset = 0;187    } else {188      this.cursorOffset++;189    }190 191    this.render();192  }193 194  first() {195    this.cursor = 0;196    this.render();197  }198 199  last() {200    this.cursor = this.value.length;201    this.render();202  }203 204  left() {205    if (this.cursor <= 0 || this.placeholder) return this.bell();206    this.moveCursor(-1);207    this.render();208  }209 210  right() {211    if (this.cursor * this.scale >= this.rendered.length || this.placeholder) return this.bell();212    this.moveCursor(1);213    this.render();214  }215 216  isCursorAtStart() {217    return this.cursor === 0 || this.placeholder && this.cursor === 1;218  }219 220  isCursorAtEnd() {221    return this.cursor === this.rendered.length || this.placeholder && this.cursor === this.rendered.length + 1;222  }223 224  render() {225    if (this.closed) return;226 227    if (!this.firstRender) {228      if (this.outputError) this.out.write(cursor.down(lines(this.outputError, this.out.columns) - 1) + clear(this.outputError, this.out.columns));229      this.out.write(clear(this.outputText, this.out.columns));230    }231 232    super.render();233    this.outputError = '';234    this.outputText = [style.symbol(this.done, this.aborted), color.bold(this.msg), style.delimiter(this.done), this.red ? color.red(this.rendered) : this.rendered].join(` `);235 236    if (this.error) {237      this.outputError += this.errorMsg.split(`\n`).reduce((a, l, i) => a + `\n${i ? ' ' : figures.pointerSmall} ${color.red().italic(l)}`, ``);238    }239 240    this.out.write(erase.line + cursor.to(0) + this.outputText + cursor.save + this.outputError + cursor.restore + cursor.move(this.cursorOffset, 0));241  }242 243}244 245module.exports = TextPrompt;