Allow to set a different dest_uri when creating a File

mkdocs/structure/files.py

@@ -183,14 +183,24 @@ def dest_path(self, value):
 
     page: Optional[Page]
 
-    def __init__(self, path: str, src_dir: str, dest_dir: str, use_directory_urls: bool) -> None:
+    def __init__(
+        self,
+        path: str,
+        src_dir: str,
+        dest_dir: str,
+        use_directory_urls: bool,
+        *,
+        dest_uri: Optional[str] = None,
+    ) -> None:
         self.page = None
         self.src_path = path
-        self.abs_src_path = os.path.normpath(os.path.join(src_dir, self.src_path))
         self.name = self._get_stem()
-        self.dest_uri = self._get_dest_path(use_directory_urls)
-        self.abs_dest_path = os.path.normpath(os.path.join(dest_dir, self.dest_path))
+        if dest_uri is None:
+            dest_uri = self._get_dest_path(use_directory_urls)
+        self.dest_uri = dest_uri
         self.url = self._get_url(use_directory_urls)
+        self.abs_src_path = os.path.normpath(os.path.join(src_dir, self.src_uri))
+        self.abs_dest_path = os.path.normpath(os.path.join(dest_dir, self.dest_uri))
 
     def __eq__(self, other) -> bool:
         return (
@@ -207,10 +217,10 @@ def __repr__(self):
         )
 
     def _get_stem(self) -> str:
-        """Return the name of the file without it's extension."""
+        """Return the name of the file without its extension."""
         filename = posixpath.basename(self.src_uri)
         stem, ext = posixpath.splitext(filename)
-        return 'index' if stem in ('index', 'README') else stem
+        return 'index' if stem == 'README' else stem
 
     def _get_dest_path(self, use_directory_urls: bool) -> str:
         """Return destination path based on source path."""

mkdocs/tests/structure/file_tests.py

@@ -339,6 +339,26 @@ def test_file_name_with_space(self):
         self.assertEqual(f.url, 'foo%20bar.html')
         self.assertEqual(f.name, 'foo bar')
 
+    def test_file_name_with_custom_dest_uri(self):
+        for use_directory_urls in True, False:
+            with self.subTest(use_directory_urls=use_directory_urls):
+                f = File(
+                    'stuff/foo.md',
+                    src_dir='/path/to/docs',
+                    dest_dir='/path/to/site',
+                    use_directory_urls=use_directory_urls,
+                    dest_uri='stuff/1-foo/index.html',
+                )
+                self.assertEqual(f.src_uri, 'stuff/foo.md')
+                self.assertPathsEqual(f.abs_src_path, '/path/to/docs/stuff/foo.md')
+                self.assertEqual(f.dest_uri, 'stuff/1-foo/index.html')
+                self.assertPathsEqual(f.abs_dest_path, '/path/to/site/stuff/1-foo/index.html')
+                if use_directory_urls:
+                    self.assertEqual(f.url, 'stuff/1-foo/')
+                else:
+                    self.assertEqual(f.url, 'stuff/1-foo/index.html')
+                self.assertEqual(f.name, 'foo')
+
     def test_files(self):
         fs = [
             File('index.md', '/path/to/docs', '/path/to/site', use_directory_urls=True),