nyx_server/optimist/help.js

Node内容发布

/* global __dirname */
var fs = require('fs');
var path = require('path');

var ejs = require('ejs');

var colors = require('./colors');


var format = function (data) {
  if (Array.isArray(data)) {
    return data;
  }

  if (typeof data === 'string' || typeof data === 'number' || typeof data === 'boolean') {
    return [data];
  }

  return data;
};

var createPadded = function (count) {
  return (new Array(count + 1)).join(' ');
};

var getMax = function (list) {
  var max = 0;
  list.forEach(function (key) {
    if (key.length > max) {
      max = key.length;
    }
  });
  return max;
};

module.exports = {
  summary: function (commands, themeUrl) {
    themeUrl = themeUrl || path.resolve(__dirname, './ejs/help-summary.ejs');
    var template = fs.readFileSync(themeUrl);
    var max = getMax(Object.keys(commands));

    var datas = [];
    Object.keys(commands).forEach(function (key) {
      datas.push({
        name: key,
        space: createPadded(max - key.length),
        info: commands[key].optimist && commands[key].optimist().info()
      });
    });

    eval((ejs.render(template.toString(), { datas: datas })));
  },

  detailed: function (optimist, themeUrl) {
    themeUrl = themeUrl || path.resolve(__dirname, './ejs/help-detailed.ejs');
    var template = fs.readFileSync(themeUrl);
    var datas = {
      usage: optimist.usage(),
      properties: []
    };
    var p;
    for (var key in optimist.options) {
      p = optimist.options[key];
      datas.properties.push({
        name: key,
        type: format(p.type),
        required: p.require,
        alias: p.alias,
        enum: p.enum,
        default: p.default,
        info: p.describe
      });
    }
    eval(ejs.render(template.toString(), { datas: datas }));
  }
};