Remove dependency to functools32

Author: viniciuschiele

flask_apidoc/apidoc.py

@@ -16,9 +16,9 @@
 import mimetypes
 
 from flask import request
-from functools32 import lru_cache
 from os.path import join, getmtime, getsize
 from werkzeug.datastructures import Headers
+from .utils import cached
 
 
 class ApiDoc(object):
@@ -84,7 +84,7 @@ def __send_static_file(self, path=None):
         # Any other apidoc file is treated as a normal static file
         return self.app.send_static_file(file_name)
 
-    @lru_cache(maxsize=None)
+    @cached
     def __send_api_file(self, file_name):
         """
         Sends apidoc files from the apidoc folder to the browser.
@@ -121,7 +121,7 @@ def __send_api_file(self, file_name):
 
         return response
 
-    @lru_cache(maxsize=None)
+    @cached
     def __read_api_project(self):
         """
         Reads the api_project.json file from apidoc folder as a json string.

flask_apidoc/utils.py

@@ -0,0 +1,23 @@
+"""
+Helpers.
+"""
+
+
+def cached(f):
+    """
+    Cache decorator for functions taking one or more arguments.
+    :param f: The function to be cached.
+    :return: The cached value.
+    """
+    class CachedDict(dict):
+        def __init__(self, f):
+            self.f = f
+
+        def __call__(self, *args):
+            return self[args]
+
+        def __missing__(self, key):
+            ret = self[key] = self.f(*key)
+            return ret
+
+    return CachedDict(f)

requirements.txt

@@ -1,3 +1,2 @@
 flask>=0.10.1
 flask_script>=2.0.5
-functools32==3.2.3.post2

setup.py

@@ -17,7 +17,7 @@
         'Natural Language :: English',
         'Operating System :: OS Independent',
         'Programming Language :: Python',
-	'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.2',
         'Programming Language :: Python :: 3.3',

tests/__init__.py

@@ -0,0 +1,12 @@
+from unittest import TestCase
+from flask_apidoc.utils import cached
+
+
+class TestUtils(TestCase):
+    def test_cache(self):
+        @cached
+        def f(a, b):
+            return object()
+
+        self.assertEqual(f(1, 2), f(1, 2))
+        self.assertNotEqual(f(1, 2), f(1, 3))