epub converter: bug fix

- remove adding border 0 in td
-save links while headings removal

src/html_epub_preprocessor.py

@@ -97,6 +97,7 @@ def preprocess_table(body_tag: BeautifulSoup):
 
             if width:
                 td.attrs['width'] = width
+            td.attrs['style'] = td.attrs.get('style').replace('border:0;', '')
 
         if border_sizes:
             border_size = sum(border_sizes) / len(border_sizes)
@@ -118,6 +119,15 @@ def _process_lists(body_tag):
             il_tag.p.unwrap()
 
 
+def _add_span_to_save_ids_for_links(tag_to_be_removed, body_tag):
+    for sub_tag in tag_to_be_removed.find_all():
+        if sub_tag.attrs.get('id'):
+            new_tag = body_tag.new_tag("span")
+            new_tag.attrs['id'] = sub_tag.attrs['id']
+            new_tag.attrs['class'] = sub_tag.attrs.get('class')
+            tag_to_be_removed.insert_before(new_tag)
+
+
 def clean_headings_content(content: Tag, title: str):
     title = title.lower()
     for child in content.contents:
@@ -130,8 +140,10 @@ def clean_headings_content(content: Tag, title: str):
             text = re.sub(r' +', ' ', text).strip()
             text = text.lower()
             if title == text:
+                _add_span_to_save_ids_for_links(child, content)
                 child.extract()
             elif (title in text) and (child.name in ['h1', 'h2', 'h3']):
+                _add_span_to_save_ids_for_links(child, content)
                 child.extract()
             break