Fix MkDocs sitemap to not skip section index pages

Fixes #3

Author: oprypin

mkdocs_section_index/rewrites.py

@@ -23,7 +23,9 @@ def get_source(self, environment: Environment, template: str) -> Tuple[str, str,
         old_src = src
         path = pathlib.Path(filename).as_posix()
 
-        if path.endswith("/material/partials/nav-item.html"):
+        if path.endswith("/mkdocs/templates/sitemap.xml"):
+            src = _transform_mkdocs_sitemap_template(src)
+        elif path.endswith("/material/partials/nav-item.html"):
             src = _transform_material_nav_item_template(src)
         elif path.endswith("/material/partials/tabs-item.html"):
             src = _transform_material_tabs_item_template(src)
@@ -41,6 +43,13 @@ def get_source(self, environment: Environment, template: str) -> Tuple[str, str,
         return src, filename, uptodate
 
 
+def _transform_mkdocs_sitemap_template(src: str) -> str:
+    return src.replace(
+        "{%- else %}",
+        "{%- endif %}{% if item.url %}",
+    )
+
+
 def _transform_material_nav_item_template(src: str) -> str:
     src = src.replace(
         "{% if nav_item.children %}",

tests/rewrites/mkdocs-sitemap-1.yml

@@ -0,0 +1,47 @@
+# https://github.com/mkdocs/mkdocs/blob/cb85d48851133e6d482deb3405de67c3dbea82be/mkdocs/templates/sitemap.xml
+input: |
+  {%- macro nav_item(item) -%}
+      {%- if item.children -%}
+          {%- for child in item.children -%}
+              {{ nav_item(child) }}
+          {%- endfor -%}
+      {%- else %}
+    {%- if not item.is_link -%}
+      <url>
+      <loc>{% if item.canonical_url %}{{ item.canonical_url|e }}{% else %}{{ item.abs_url|e }}{% endif %}</loc>
+      {% if item.update_date %}<lastmod>{{item.update_date}}</lastmod>{% endif %}
+      <changefreq>daily</changefreq>
+      </url>
+          {%- endif -%}
+      {%- endif -%}
+  {%- endmacro -%}
+
+  <?xml version="1.0" encoding="UTF-8"?>
+  <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  {%- for item in nav -%}
+      {{ nav_item(item) }}
+  {%- endfor %}
+  </urlset>
+output: |
+  {%- macro nav_item(item) -%}
+      {%- if item.children -%}
+          {%- for child in item.children -%}
+              {{ nav_item(child) }}
+          {%- endfor -%}
+      {%- endif %}{% if item.url %}
+    {%- if not item.is_link -%}
+      <url>
+      <loc>{% if item.canonical_url %}{{ item.canonical_url|e }}{% else %}{{ item.abs_url|e }}{% endif %}</loc>
+      {% if item.update_date %}<lastmod>{{item.update_date}}</lastmod>{% endif %}
+      <changefreq>daily</changefreq>
+      </url>
+          {%- endif -%}
+      {%- endif -%}
+  {%- endmacro -%}
+
+  <?xml version="1.0" encoding="UTF-8"?>
+  <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  {%- for item in nav -%}
+      {{ nav_item(item) }}
+  {%- endfor %}
+  </urlset>

tests/test_rewrites.py

@@ -3,6 +3,11 @@
 from mkdocs_section_index import rewrites
 
 
+@pytest.mark.golden_test("rewrites/mkdocs-sitemap-*.yml")
+def test_rewrite_mkdocs_sitemap(golden):
+    assert rewrites._transform_mkdocs_sitemap_template(golden["input"]) == golden.out["output"]
+
+
 @pytest.mark.golden_test("rewrites/readthedocs-base-*.yml")
 def test_rewrite_readthedocs_base(golden):
     assert rewrites._transform_readthedocs_base_template(golden["input"]) == golden.out["output"]