From 017d355c9639eae976cae7d524d527dd53b68962 Mon Sep 17 00:00:00 2001
From: h404bi <h404bi@gmail.com>
Date: Fri, 20 Apr 2018 17:04:34 +0800
Subject: [PATCH 1/2] Misc: add meta generator injection filter

---
 lib/plugins/filter/index.js          |  1 +
 lib/plugins/filter/meta_generator.js | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 lib/plugins/filter/meta_generator.js

diff --git a/lib/plugins/filter/index.js b/lib/plugins/filter/index.js
index 18cdffac57..6a1c36a411 100644
--- a/lib/plugins/filter/index.js
+++ b/lib/plugins/filter/index.js
@@ -11,4 +11,5 @@ module.exports = ctx => {
 
   filter.register('new_post_path', require('./new_post_path'));
   filter.register('post_permalink', require('./post_permalink'));
+  filter.register('after_render:html', require('./meta_generator'));
 };
diff --git a/lib/plugins/filter/meta_generator.js b/lib/plugins/filter/meta_generator.js
new file mode 100644
index 0000000000..0f78e63918
--- /dev/null
+++ b/lib/plugins/filter/meta_generator.js
@@ -0,0 +1,18 @@
+'use strict';
+
+const rMetaGenerator = /<meta\s+name=['|"]?generator['|"]?/i;
+const hexoGeneratorTag = '<meta name="generator" content="Hexo %s" />';
+let cheerio;
+
+function hexoMetaGeneratorInject(data) {
+  if (!rMetaGenerator.test(data)) {
+    if (!cheerio) cheerio = require('cheerio');
+    const $ = cheerio.load(data, {decodeEntities: false});
+
+    $('head').prepend(hexoGeneratorTag.replace('%s', this.version));
+
+    return $.html();
+  }
+}
+
+module.exports = hexoMetaGeneratorInject;

From 3ed25c9f74b7f01ccc48bc301cd472f5cb186c91 Mon Sep 17 00:00:00 2001
From: h404bi <h404bi@gmail.com>
Date: Fri, 20 Apr 2018 20:28:05 +0800
Subject: [PATCH 2/2] Fixes meta generator detection

---
 lib/plugins/filter/meta_generator.js | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/lib/plugins/filter/meta_generator.js b/lib/plugins/filter/meta_generator.js
index 0f78e63918..1e5ee3bb33 100644
--- a/lib/plugins/filter/meta_generator.js
+++ b/lib/plugins/filter/meta_generator.js
@@ -1,14 +1,13 @@
 'use strict';
 
-const rMetaGenerator = /<meta\s+name=['|"]?generator['|"]?/i;
-const hexoGeneratorTag = '<meta name="generator" content="Hexo %s" />';
 let cheerio;
+const hexoGeneratorTag = '<meta name="generator" content="Hexo %s" />';
 
 function hexoMetaGeneratorInject(data) {
-  if (!rMetaGenerator.test(data)) {
-    if (!cheerio) cheerio = require('cheerio');
-    const $ = cheerio.load(data, {decodeEntities: false});
+  if (!cheerio) cheerio = require('cheerio');
+  const $ = cheerio.load(data, {decodeEntities: false});
 
+  if (!($('meta[name="generator"]').length > 0)) {
     $('head').prepend(hexoGeneratorTag.replace('%s', this.version));
 
     return $.html();