hexo源码分析之加载配置文件

hexo是如何加载配置文件的

hexo/index.js

首先在构造函数里初始化配置文件路径

//_config.yml就是根目录下的
this.config_path = args.config ? pathFn.resolve(base, args.config)
                                : pathFn.join(base, '_config.yml');

hexo有个默认的配置文件

default_config.js

'use strict';

module.exports = {
  // Site
  title: 'Hexo',
  subtitle: '',
  description: '',
  author: 'John Doe',
  language: '',
  timezone: '',
  // URL
  url: 'http://yoursite.com',
  root: '/',
  permalink: ':year/:month/:day/:title/',
  permalink_defaults: {},
  // Directory
  source_dir: 'source',
  public_dir: 'public',
  tag_dir: 'tags',
  archive_dir: 'archives',
  category_dir: 'categories',
  code_dir: 'downloads/code',
  i18n_dir: ':lang',
  skip_render: [],
  // Writing
  new_post_name: ':title.md',
  default_layout: 'post',
  titlecase: false,
  external_link: true,
  filename_case: 0,
  render_drafts: false,
  post_asset_folder: false,
  relative_link: false,
  future: true,
  highlight: {
    enable: true,
    auto_detect: true, // Maintain consistent with previous version.
    line_number: true,
    tab_replace: '',
  },
  // Category & Tag
  default_category: 'uncategorized',
  category_map: {},
  tag_map: {},
  // Date / Time format
  date_format: 'YYYY-MM-DD',
  time_format: 'HH:mm:ss',
  // Pagination
  per_page: 10,
  pagination_dir: 'page',
  // Extensions
  theme: 'landscape',
  // Deployment
  deploy: {}
};

this.config = _.clone(defaultConfig);

随后在init函数中初始化配置：

Hexo.prototype.init

// Load config
 return Promise.each([
   'update_package', // Update package.json
   'load_config', // Load config
   'load_plugins' // Load external plugins & scripts
 ], function(name){
   return require('./' + name)(self);
 }).then(function(){
   return self.execFilter('after_init', null, {context: self});
 }).then(function(){
   // Ready to go!
   self.emit('ready');
 });

init函数就是在hexo-cli/hexo.js中加载完hexo模块后就调用的：

return findPkg(cwd, args).then(function(path) {
   if (!path) return;

   hexo.base_dir = path;

   return loadModule(path, args).catch(function() {
     log.error('Local hexo not found in %s', chalk.magenta(tildify(path)));
     log.error('Try running: \'npm install hexo --save\'');
     process.exit(2);
   });
 }).then(function(mod) {
   if (mod) hexo = mod;
   log = hexo.log;

   require('./console')(hexo);

   return hexo.init();
 })