Fix encryption of an empty htlm element

Author: CoinK0in

README.md

@@ -34,7 +34,7 @@ Install the package from source with pip:
 ```bash
 cd mkdocs-encryptcontent-plugin/
 python3 setup.py sdist bdist_wheel
-pip3 install dist/mkdocs_encryptcontent_plugin-0.0.11-py3-none-any.whl
+pip3 install dist/mkdocs_encryptcontent_plugin-0.0.12-py3-none-any.whl
 ```
 
 Enable the plugin in your `mkdocs.yml`:

encryptcontent/plugin.py

@@ -251,8 +251,10 @@ def on_post_page(self, output_content, page, config, **kwargs):
                         # Merge the content in case there are several elements
                         if len(item.contents) > 1:
                             merge_item = ''.join([str(s) for s in item.contents])
-                        else:
+                        elif len(item.contents) == 1:
                             merge_item = item.contents[0]
+                        else:
+                            merge_item = ""
                         # Encrypt childs items on target tags with page password
                         cipher_bundle = self.__encrypt_text_aes__(merge_item, page.password)
                         encrypted_content = b';'.join(cipher_bundle).decode('ascii')

setup.py

@@ -11,7 +11,7 @@ def read(fname):
 
 setup(
     name='mkdocs-encryptcontent-plugin',
-    version='0.0.11',
+    version='0.0.12',
     author='CoinK0in',
     author_email='[email protected]',
     description='A MkDocs plugin that encrypt/decrypt markdown content with AES',