Merge 0cee47c into 4061c14

knowledge_repo/app/routes/posts.py

@@ -189,13 +189,12 @@ def download():
     post = current_repo.post(request.args.get('post'))  # Note: `post` is expected to be a post path
     resource_type = request.args.get('type', 'source')
 
-    if resource_type in ('kp', 'zip'):
-        filename = os.path.basename(post.path)
-        if resource_type == 'zip':
-            filename = filename[:-3] + '.zip'
+    if resource_type == 'post':
+        format = request.args.get('format', 'zip')
+        filename = os.path.basename(post.path)[:-2] + format
         return Response(
-            post.to_string(format=resource_type),
-            mimetype="application/zip",
+            post.to_string(format=format),
+            mimetype="application/octet-stream",
             headers={u"Content-disposition": "attachment; filename={}".format(filename)})
     elif resource_type == 'source':
         path = request.args.get('path', None)

knowledge_repo/app/templates/markdown-base.html

@@ -19,9 +19,11 @@
 {% endblock %}
 
 {% block panel_right %}
+
 {% if can_download %}
   <span class='section'>Downloads</span>
   <a href="{{url_for('posts.download')}}?type=kp&post={{post_path|urlencode}}" class="btn btn-primary btn-download" style='display: block;'>Portable Knowledge Post</a>
+  <a href="{{url_for('posts.download')}}?type=post&format=pdf&post={{post_path|urlencode}}" class="btn btn-primary btn-download" style='display: block;'>PDF</a>
   <a href="{{url_for('posts.download')}}?type=zip&post={{post_path|urlencode}}" class="btn btn-primary btn-download" style='display: block;'>ZIP Archive</a>
   {% if downloads %}
     <span class='subsection'>Source Files</span>

knowledge_repo/converters/pdf.py

@@ -0,0 +1,30 @@
+from ..converter import KnowledgePostConverter
+
+from .html import HTMLConverter
+
+
+class PDFConverter(KnowledgePostConverter):
+    '''
+    Use this as a template for new KnowledgePostConverters.
+    '''
+    _registry_keys = ['pdf']
+
+    @property
+    def dependencies(self):
+        # Dependencies required for this converter on top of core knowledge-repo dependencies
+        return ['weasyprint']
+
+    def from_file(self, filename, **opts):
+        raise NotImplementedError
+
+    def from_string(self, filename, **opts):
+        raise NotImplementedError
+
+    def to_file(self, filename, **opts):
+        with open(filename, 'wb') as f:
+            f.write(self.to_string())
+
+    def to_string(self, **opts):
+        from weasyprint import HTML
+        html = HTMLConverter(self.kp).to_string()
+        return HTML(string=html).write_pdf()