bpo-39791 native hooks for importlib.resources.files (GH-20576)

* Provide native .files support on SourceFileLoader.

* Add native importlib.resources.files() support to zipimporter. Remove fallback support.

* make regen-all

* 📜🤖 Added by blurb_it.

* Move 'files' into the ResourceReader so it can carry the relevant module name context.

* Create 'importlib.readers' module and add FileReader to it.

* Add zip reader and rely on it for a TraversableResources object on zipimporter.

* Remove TraversableAdapter, no longer needed.

* Update blurb.

* Replace backslashes with forward slashes.

* Incorporate changes from importlib_metadata 2.0, finalizing the interface for extension via get_resource_reader.

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>

1 files changed, 2 insertions, 24 deletions

diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py
index 25a3f8c0e0..4f06039f3d 100644
--- a/Lib/importlib/_bootstrap_external.py
+++ b/Lib/importlib/_bootstrap_external.py
@@ -982,32 +982,10 @@ class FileLoader:
             with _io.FileIO(path, 'r') as file:
                 return file.read()
 
-    # ResourceReader ABC API.
-
     @_check_name
     def get_resource_reader(self, module):
-        if self.is_package(module):
-            return self
-        return None
-
-    def open_resource(self, resource):
-        path = _path_join(_path_split(self.path)[0], resource)
-        return _io.FileIO(path, 'r')
-
-    def resource_path(self, resource):
-        if not self.is_resource(resource):
-            raise FileNotFoundError
-        path = _path_join(_path_split(self.path)[0], resource)
-        return path
-
-    def is_resource(self, name):
-        if path_sep in name:
-            return False
-        path = _path_join(_path_split(self.path)[0], name)
-        return _path_isfile(path)
-
-    def contents(self):
-        return iter(_os.listdir(_path_split(self.path)[0]))
+        from importlib.readers import FileReader
+        return FileReader(self)
 
 
 class SourceFileLoader(FileLoader, SourceLoader):