Add support for jdenticon, refactor js library dependency structure

.gitignore

@@ -1,5 +1,4 @@
 .DS_Store
-node_modules
 tmp
 .vscode/
 vim*

.grenrc.yml

@@ -0,0 +1,6 @@
+---
+  dataSource: "issues"
+  prefix: ""
+  onlyMilestones: false
+  groupBy: false
+  changelogFilename: "CHANGELOG.md"

_config.yml

@@ -1,4 +1,4 @@
-version: 2.0.15
+version: 2.0.16
 url: https://qutang.github.io/cutie/
 logo: /images/theme-icon.svg
 slogan: Bazinga, theme cutie!
@@ -28,6 +28,8 @@ post:
   enable_unread_badge: false
 
 changelog:
+  v2.0.16:
+    - Use jdenticon when post icon is unavailable.
   v2.0.15:
     - Bug fix of searching result links. Refer to <a href='https://github.com/qutang/hexo-theme-cutie/issues/85' target='_blank'>#85</a>.
   v2.0.14:
@@ -157,6 +159,11 @@ libs:
     name: striptags
     url: https://www.npmjs.com/package/striptags
     js: /libs/striptags/src/striptags.js
+  jdenticon:
+    name: "Jdenticon: Open source library for generating identicons"
+    url: https://jdenticon.com
+    js_min: /libs/jdenticon/dist/jdenticon.min.js
+    js: /libs/jdenticon/dist/jdenicon.js
 
 
 

layout/_partial/card.swig

@@ -28,7 +28,7 @@
 		{% endfor %}
 	{% else %}
 		{% set category_link = url_for(item.path) %}
-		{% set category_name = "uncategorized" %}
+		{% set category_name = "{{ url_for(generate_post_icon(item.title)) }}" %}
 	{% endif %}
 	<mark class='Card-badge' style='{visibility: "hidden"}'></mark>
 	<div class='Card-figure'>
@@ -37,10 +37,11 @@
 		{% else %}
 			<a href="{{ url_for(item.path) }}">
 		{% endif %}
+
 		{% if item.icon %}
-			<img class='grow' src="{{ item.icon }}" alt="" onerror='if(this.src != "/images/uncategorized.svg") this.src = "/images/uncategorized.svg"'>
-		{% else %}
-			<img class='grow' src="{{ '/images/' + category_name + '.svg' }}" alt="" onerror='if (this.src != "/images/uncategorized.svg") this.src = "/images/uncategorized.svg"'>
+			<img class='grow' src="{{ item.icon }}" alt="" onerror='this.src = "{{ generate_post_icon(item.title) }}"'> 
+	  {% else %} 
+			<img class='grow' src="{{ category_name }}" alt="" onerror='this.src = "{{ generate_post_icon(item.title) }}"'> 
 		{% endif %}
 		</a>
 	</div>