Implement handling of one post in multiple languages.

scripts/blog.py

@@ -83,6 +83,7 @@ MONITORED_EVENT_TYPES = (
     'IN_DELETE_SELF',
     'IN_MOVE_SELF',
 )
+LANG_PRIORITY = ('en', 'es', 'gl')
 
 
 def parse_nikola_date(match):
@@ -161,6 +162,8 @@ def get_out_path(front_matter):
         front_matter['slug'] = slugify(front_matter['title'])
 
     out_path = os.path.join(str(front_matter['date'].year), front_matter['slug'])
+    if front_matter.get('lang', LANG_PRIORITY[0]) != LANG_PRIORITY[0]:
+        out_path = os.path.join(str(front_matter['date'].year), front_matter['lang'], front_matter['slug'])
     return out_path
 
 
@@ -192,12 +195,16 @@ def load_doc(filepath):
     return (doc, front_matter, out_path)
 
 
-def render_article(doc, front_matter, f):
+def render_article(doc, front_matter, f, out_path):
+    extsep = '/' if '/' in out_path else '\\'
+    subdirs = len(out_path.split(extsep))
+    base_path = os.path.join(*(['..'] * subdirs))
     result = ARTICLE_TEMPLATE.render(
         content=doc,
         title=front_matter['title'],
         post_publication_date=front_matter['date'],
         post_tags=split_tags(front_matter['tags']),
+        base_path=base_path,
     )
     f.write(result)
 
@@ -286,7 +293,26 @@ def summarize(doc):
     return result
 
 def render_index(docs, dest_top):
-    docs = sorted(docs.values(), key=lambda x: x[1]['date'], reverse=True)
+    # Collect all languages accepted for all docs
+    docs_by_slug = {}
+    for (doc, front_matter, out_path) in docs.values():
+        if front_matter['slug'] not in docs_by_slug:
+            docs_by_slug[front_matter['slug']] = {}
+        docs_by_slug[front_matter['slug']][front_matter.get('lang', LANG_PRIORITY[0])] = (doc, front_matter, out_path)
+
+    # Remove duplicated for langs with less priority
+    selected_docs = []
+    for (doc, front_matter, out_path) in docs.values():
+        langs = docs_by_slug[front_matter['slug']]
+        lang_priority = LANG_PRIORITY.index(front_matter.get('lang', LANG_PRIORITY[0]))
+        min_lang_priority = min([
+            LANG_PRIORITY.index(lang)
+            for lang in langs.keys()
+        ])
+        if lang_priority == min_lang_priority:
+            selected_docs.append((doc, front_matter, out_path, langs))
+
+    docs = sorted(selected_docs, key=lambda x: x[1]['date'], reverse=True)
 
     index_ranges = range(0, len(docs), BLOG_INDEX_PAGE_SIZE)
 
@@ -302,7 +328,7 @@ def render_index(docs, dest_top):
                 "summary": summarize(doc),
                 "link": out_path.rstrip('/') + '/',
             }
-            for (doc, front_matter, out_path) in page
+            for (doc, front_matter, out_path, _alternatives) in page
         ]
 
         prev_index_num = None
@@ -390,11 +416,11 @@ def regen_all(source_top, dest_top, docs=None):
         doc_full_path = os.path.join(dest_top, out_path)
         os.makedirs(os.path.dirname(doc_full_path), exist_ok=True)
         # print("==", doc_full_path)
-        out_path = doc_full_path + '/index.html'
+        full_out_path = doc_full_path + '/index.html'
-        os.makedirs(os.path.dirname(out_path), exist_ok=True)
+        os.makedirs(os.path.dirname(full_out_path), exist_ok=True)
-        with open(out_path, 'wt') as f:
+        with open(full_out_path, 'wt') as f:
             try:
-                render_article(doc, front_matter, f)
+                render_article(doc, front_matter, f, out_path)
             except:
                 logging.error(traceback.format_exc())
                 logging.error("Rendering failed 😿")
@@ -493,7 +519,7 @@ def main(source_top, dest_top):
             # print("==", doc_full_path)
             with open(doc_full_path + '/index.html', 'wt') as f:
                 try:
-                    render_article(doc, front_matter, f)
+                    render_article(doc, front_matter, f, out_path)
                 except:
                     logging.error(traceback.format_exc())
                     logging.error("Rendering failed 😿")

static/article.tmpl.html

@@ -4,19 +4,19 @@
         <meta charset="utf-8">
         <title>{{ title }} @ Código para llevar [blog]</title>
         <meta name="viewport" content="width=device-width, initial-scale=1">
-        <link rel="stylesheet" href="../../css/style.css" />
+        <link rel="stylesheet" href="{{ base_path }}/css/style.css" />
-        <link rel="stylesheet" href="../../css/light-syntax.css" />
+        <link rel="stylesheet" href="{{ base_path }}/css/light-syntax.css" />
-        <link rel="stylesheet" href="../../css/dark-syntax.css" />
+        <link rel="stylesheet" href="{{ base_path }}/css/dark-syntax.css" />
     </head>
     <body class="blog">
       <div class="site-header">
-        <h1 class="site-name"><a href="../../">Codigo para llevar [blog]</a></h1>
+        <h1 class="site-name"><a href="{{ base_path }}/">Codigo para llevar [blog]</a></h1>
         <nav class="site-links">
           <span class="fancy-link">
-            <a href="../../../">Home</a>
+            <a href="{{ base_path }}/../">Home</a>
           </span>
           <span class="fancy-link">
-            <a href="../../../notes/">Notes</a>
+            <a href="{{ base_path }}/../notes/">Notes</a>
           </span>
           <span class="fancy-link">
             <a href="https://github.com/kenkeiras">GitHub</a>
@@ -38,7 +38,7 @@
             </time>
             <ul class="post-tags">
               {% for post_tag in post_tags %}
-              <li class="post-tag"><a href="../../tags/{{ post_tag }}/"</a>{{ post_tag }}</a></li>
+              <li class="post-tag"><a href="{{ base_path }}/tags/{{ post_tag }}/"</a>{{ post_tag }}</a></li>
               {% endfor %}
             </ul>
           </div>