feat: add the configure for declare copyright on posts

_config.yml

@@ -22,6 +22,13 @@ authoricon: heart
 # Footer `powered-by` and `theme-info` copyright
 copyright: true
 
+# Declare license on posts
+post_copyright:
+  enable: false
+  license: CC BY-NC-SA 3.0 CN
+  license_url: http://creativecommons.org/licenses/by-nc-sa/3.0/cn/
+
+
 # Canonical, set a canonical link tag in your hexo, you could use it for your SEO of blog.
 # See: https://support.google.com/webmasters/answer/139066
 # Tips: Before you open this tag, remember set up your URL in hexo _config.yml ( ex. url: http://yourdomain.com )

layout/_macro/post-copyright.swig

@@ -0,0 +1,7 @@
+{% if theme.post_copyright.enable %}
+  <div style="background-color: #f9f9f9; margin-top: 2em; border-left:3px solid #ff1700; padding:.5em 1em;">
+    <strong>本文链接:</strong> <a href="{{ config.url }}{{ url_for(path) }}" title="{{ title }}">{{ config.url }}{{ url_for(path) }}</a>
+    <br>
+    <strong>版权声明:</strong>本博客所有文章除特别声明外，均采用<a href="{{ theme.post_copyright.license_url }}" rel="external nofollow" target="_blank">{{ theme.post_copyright.license }}</a>许可协议。转载请注明出处！<br>
+  </div>
+{% endif %}

layout/_macro/post.swig

@@ -308,6 +308,11 @@
       {% endif %}
     </div>
 
+    <div>
+      {% if not is_index %}
+        {% include 'post-copyright.swig' %}
+      {% endif %}
+    </div>
 
     <footer class="post-footer">
       {% if post.tags and post.tags.length and not is_index %}