first commit

index.js

@@ -0,0 +1,57 @@
+'use strict'
+/* global hexo */
+
+var _ = require('lodash')
+
+var options = _.assign({
+  enable: true,
+  className: 'github-emoji'
+}, hexo.config.githubEmojis)
+
+if (options.enable !== false) {
+  var request = require('request')
+  var randomUa = require('random-ua')
+
+  // fallback
+  var fallbackEmojis = require('./emojis.json')
+
+  var localEmojis = options.localEmojis
+  if (_.isString(localEmojis)) {
+    try {
+      localEmojis = JSON.parse(localEmojis)
+    } catch (SyntaxError) {
+      localEmojis = {}
+      throw new Error('filter-github-emojis: local emojis parsing error')
+    }
+  }
+
+  var githubEmojis = _.assign(fallbackEmojis, localEmojis)
+
+  // get the lastest github version
+  request({
+    url: 'https://api.github.com/emojis',
+    headers: {
+      'User-Agent': randomUa.generate()
+    },
+    json: true
+  }, function (error, response, body) {
+    if (!error && response.statusCode === 200) {
+      if (_.isObject(body)) {
+        githubEmojis = _.assign(fallbackEmojis, body, localEmojis)
+      }
+    }
+  })
+
+  hexo.extend.filter.register('before_post_render', function (data) {
+    data.content = data.content.replace(/:(\w+):/ig, function (match, p1) {
+      if (githubEmojis[p1]) {
+        return '<img class="' + options.className +
+        '" title="' + match + '" alt="' + match + '" src="' +
+        githubEmojis[p1] + '" height="20" width="20" />'
+      } else {
+        return match
+      }
+    })
+    return data
+  })
+}