RSS fetch - RSS field <title> was not rendering as text correctly, added workaround #1879

changedetectionio/html_tools.py

@@ -98,10 +98,7 @@ def xpath_filter(xpath_filter, html_content, append_pretty_line_formatting=False
         elif type(element) == etree._ElementUnicodeResult:
             html_block += str(element)
         else:
-            if not is_rss:
+            html_block += etree.tostring(element, pretty_print=True).decode('utf-8')
-                html_block += etree.tostring(element, pretty_print=True).decode('utf-8')
-            else:
-                html_block += f"<div>{element.text}</div>\n"
 
     return html_block
 
@@ -274,7 +271,7 @@ def cdata_in_document_to_text(html_content: str, render_anchor_tag_content=False
     pattern = '<!\[CDATA\[(\s*(?:.(?<!\]\]>)\s*)*)\]\]>'
     def repl(m):
         text = m.group(1)
-        return xml_escape(html_to_text(html_content=text))
+        return xml_escape(html_to_text(html_content=text)).strip()
 
     return re.sub(pattern, repl, html_content)
 
@@ -295,7 +292,8 @@ def html_to_text(html_content: str, render_anchor_tag_content=False, is_rss=Fals
     #  extracting this content
     if render_anchor_tag_content:
         parser_config = ParserConfig(
-            annotation_rules={"a": ["hyperlink"]}, display_links=True
+            annotation_rules={"a": ["hyperlink"]},
+            display_links=True
         )
     # otherwise set config to None/default
     else:
@@ -303,13 +301,12 @@ def html_to_text(html_content: str, render_anchor_tag_content=False, is_rss=Fals
 
     # RSS Mode - Inscriptis will treat `title` as something else.
     # Make it as a regular block display element (//item/title)
+    # This is a bit of a hack - the real way it to use XSLT to convert it to HTML #1874
     if is_rss:
-        css = CSS_PROFILES['strict'].copy()
+        html_content = re.sub(r'<title([\s>])', r'<h1\1', html_content)
-        css['title'] = HtmlElement(display=Display.block)
+        html_content = re.sub(r'</title>', r'</h1>', html_content)
-        text_content = get_text(html_content, ParserConfig(css=css))
+
-    else:
+    text_content = get_text(html_content, config=parser_config)
-        # get text and annotations via inscriptis
-        text_content = get_text(html_content, config=parser_config)
 
     return text_content
 

changedetectionio/processors/text_json_diff.py

@@ -274,7 +274,7 @@ class perform_site_check(difference_detection_processor):
                         html_tools.html_to_text(
                             html_content=html_content,
                             render_anchor_tag_content=do_anchor,
-                            is_rss=is_rss
+                            is_rss=is_rss # #1874 activate the <title workaround hack
                         )
 
         # Re #340 - return the content before the 'ignore text' was applied

changedetectionio/tests/test_rss.py

@@ -118,7 +118,7 @@ def test_basic_cdata_rss_markup(client, live_server):
     res = client.get(url_for("form_delete", uuid="all"), follow_redirects=True)
 
 def test_rss_xpath_filtering(client, live_server):
-#    live_server_setup(live_server)
+    #live_server_setup(live_server)
 
     set_original_cdata_xml()
 
@@ -154,6 +154,9 @@ def test_rss_xpath_filtering(client, live_server):
     )
     assert b'CDATA' not in res.data
     assert b'<![' not in res.data
+    # #1874  All but the first <title was getting selected
+    # Convert any HTML with just a top level <title> to <h1> to be sure title renders
+
     assert b'Hackers can access your computer' in res.data # Should ONLY be selected by the xpath
     assert b'Some other title' in res.data  # Should ONLY be selected by the xpath
     assert b'The days of Terminator' not in res.data # Should NOT be selected by the xpath