cli-engine/lib/commands/newhelp.js

Generic CLI Framework

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _cliEngineCommand = require('cli-engine-command');

var _cliEngineCommand2 = _interopRequireDefault(_cliEngineCommand);

var _screen = require('cli-engine-command/lib/screen');

var _dispatcher = require('../dispatcher');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

// import {compare} from '../util'
function trimToMaxLeft(n) {
  let max = parseInt(_screen.stdtermwidth * 0.6);
  return n > max ? max : n;
}

function trimCmd(s, max) {
  if (s.length <= max) return s;
  return `${s.slice(0, max - 1)}\u2026`;
}

function renderList(items) {
  const S = require('string');
  const max = require('lodash.maxby');

  let maxLeftLength = trimToMaxLeft(max(items, '[0].length')[0].length + 1);
  return items.map(i => {
    let left = ` ${i[0]}`;
    let right = i[1];
    if (!right) return left;
    left = `${S(trimCmd(left, maxLeftLength)).padRight(maxLeftLength)}`;
    right = linewrap(maxLeftLength + 2, right);
    return `${left}  ${right}`;
  }).join('\n');
}

function linewrap(length, s) {
  const linewrap = require('@heroku/linewrap');
  return linewrap(length, _screen.stdtermwidth, {
    skipScheme: 'ansi-color'
  })(s).trim();
}

class Help extends _cliEngineCommand2.default {

  async run() {
    await this.topics();
  }

  async topics() {
    let dispatcher = new _dispatcher.Dispatcher(this.config);
    let topics = await dispatcher.listTopics();
    // let topics = [
    //   [
    //     'topica',
    //     'desc'
    //   ]
    // ]
    topics.sort();
    this.out.log(renderList(topics.map(t => [t, 'desc'])));
    this.out.log();
  }
}
exports.default = Help;
Help.topic = 'help';
Help.description = 'display help';
Help.variableArgs = true;