refactor(__init__): reset context manager for flask app

with proper bdist setup, it shouldn't be necessary to wrap path
of importlib, since the context manager will handle egg extraction
itself. Hopefully...

src/httpaste/__init__.py

@@ -144,6 +144,7 @@ from configparser import ConfigParser
 from ast import literal_eval
 from io import StringIO
 from os import environ
+from importlib.resources import path as resource_path
 
 from connexion import FlaskApp
 from connexion.resolver import RestyResolver
@@ -302,7 +303,7 @@ def get_flask_app(
     options = {"swagger_ui": server_config.swagger_ui}
 
     #context manager returns a pathlib.Path object
-    with tmp_pkg_resource_text_path('httpaste.schema', 'httpaste.openapi.json') as path:
+    with resource_path('httpaste.schema', 'httpaste.openapi.json') as path:
 
         application = FlaskApp(__name__, specification_dir=path.parent)
 

src/httpaste/helper/common.py

@@ -1,7 +1,6 @@
 from random import choice
 from base64 import b64decode
 from urllib.parse import urljoin
-from importlib.resources import read_text
 from tempfile import mkdtemp
 from pathlib import Path
 from contextlib import contextmanager
@@ -35,28 +34,3 @@ def decode(data: str, encoding: str) -> bytes:
 def join_url(base:str, url: str) -> str:
 
     return urljoin(base, url, True)
-
-
-@contextmanager
-def tmp_pkg_resource_text_path(package:str, resource:str) -> Path:
-    """context manager for accessing package resources from a real path
-
-        this applies to the circumstance of the package living inside of an
-        egg and therefore is unable to provide real existing paths to any
-        module that may require it.
-
-        :param package: dot seperated package name
-        :param resource: basename of resource inside package
-
-        :returns: a Path-like object
-    """
-    data = read_text(package, resource)
-    tmp_dirname = mkdtemp()
-    tmp_dirpath = Path(tmp_dirname)
-    tmp_file = tmp_dirpath.joinpath(resource)
-    tmp_file.write_text(data)
-    try:
-        yield tmp_file
-    finally:
-        tmp_file.unlink()
-        tmp_dirpath.rmdir()