list_tag

hexo list 命令之tag

hexo list命令是由hexo实例调用的

//调用hexo类的call方法
return hexo.call(cmd, args).then(function() {
     return hexo.exit();
   }).catch(function(err) {
     return hexo.exit(err).then(function() {
       handleError(err);
     });
   });

   ...省略
   Hexo.prototype.call = function(name, args, callback){
  if (!callback && typeof args === 'function'){
    callback = args;
    args = {};
  }

  var self = this;

  return new Promise(function(resolve, reject){
  	//从console类获取存储的命令
    var c = self.extend.console.get(name);

    if (c){
      c.call(self, args).then(resolve, reject);
    } else {
      reject(new Error('Console `' + name + '` has not been registered yet!'));
    }
  }).nodeify(callback);
};

先调用list命令：

function listConsole(args){
  /* jshint validthis: true */
  var type = args._.shift();
  var self = this;

  // Display help message if user didn't input any arguments
  if (!type || !store.hasOwnProperty(type)){
    return this.call('help', {_: ['list']});
  }

  return this.load().then(function(){
    return store[type].call(self, args);
  });
}

加载数据库,统计数量

Hexo.prototype.load = function(callback){
  var self = this;

  return loadDatabase(this).then(function(){
  	//处理 插入数据库操作
    return Promise.all([
      self.source.process(),
      self.theme.process()
    ]);
  }).then(function(){
    return self._generate({cache: true});
  }).nodeify(callback);
};

'use strict';

var chalk = require('chalk');
var table = require('text-table');
var common = require('./common');

function listTag(){
  /* jshint validthis: true */
  //获取hexo实例的model方法
  var Tag = this.model('Tag');

  //获取tag数据 从tag model获取
  var data = Tag.sort({name: 1}).map(function(tag){
    return [tag.name, String(tag.length), chalk.magenta(tag.path)];
  });

  // Table header
  var header = ['Name', 'Posts', 'Path'].map(function(str){
    return chalk.underline(str);
  });

  //压入表头到data数组
  data.unshift(header);

  var t = table(data, {
    align: ['l', 'r', 'l'],
    stringLength: common.stringLength
  });

  console.log(t);
  if (data.length === 1) console.log('No tags.');
}

module.exports = listTag;