update setup.py

- add 'cloudflare' and 'video' extra install target (#460)
  (e.g. 'pip install gallery-dl[cloudflare]')
- remove py2exe and distutils code
- get version without calling exec()
- inline variables

setup.py

@@ -1,22 +1,15 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from __future__ import unicode_literals, print_function
-
+import re
 import sys
 import os.path
 import warnings
+from setuptools import setup
 
 if sys.hexversion < 0x3040000:
     sys.exit("Python 3.4+ required")
 
-try:
-    from setuptools import setup
-    has_setuptools = True
-except ImportError:
-    from distutils.core import setup
-    has_setuptools = False
-
 
 def read(fname):
     path = os.path.join(os.path.dirname(__file__), fname)
@@ -24,7 +17,8 @@ def read(fname):
         return file.read()
 
 def check_file(fname):
-    if os.path.exists(fname):
+    path = os.path.join(os.path.dirname(__file__), fname)
+    if os.path.exists(path):
         return True
     warnings.warn(
         "Not including file '{}' since it is not present. "
@@ -34,51 +28,12 @@ def check_file(fname):
 
 
 # get version without importing the package
-exec(read("gallery_dl/version.py"))
+VERSION = re.search(
+    r'__version__\s*=\s*"([^"]+)"',
+    read("gallery_dl/version.py"),
+).group(1)
 
-DESCRIPTION = ("Command-line program to download image-galleries and "
-               "-collections from several image hosting sites")
-LONG_DESCRIPTION = read("README.rst")
-
-if "py2exe" in sys.argv:
-    try:
-        import py2exe
-    except ImportError:
-        sys.exit("Error importing 'py2exe'")
-    params = {
-        "console": [{
-            "script": "./gallery_dl/__main__.py",
-            "dest_base": "gallery-dl",
-            "version": __version__,
-            "description": DESCRIPTION,
-            "comments": LONG_DESCRIPTION,
-            "product_name": "gallery-dl",
-            "product_version": __version__,
-        }],
-        "options": {"py2exe": {
-            "bundle_files": 0,
-            "compressed": 1,
-            "optimize": 1,
-            "dist_dir": ".",
-            "packages": ["gallery_dl"],
-            "dll_excludes": ["w9xpopen.exe"],
-        }},
-        "zipfile": None,
-    }
-elif has_setuptools:
-    params = {
-        "entry_points": {
-            "console_scripts": [
-                "gallery-dl = gallery_dl:main"
-            ]
-        }
-    }
-else:
-    params = {
-        "scripts": ["bin/gallery-dl"]
-    }
-
-data_files = [
+FILES = [
     (path, [f for f in files if check_file(f)])
     for (path, files) in [
         ('etc/bash_completion.d', ['gallery-dl.bash_completion']),
@@ -90,9 +45,10 @@ data_files = [
 
 setup(
     name="gallery_dl",
-    version=__version__,
-    description=DESCRIPTION,
-    long_description=LONG_DESCRIPTION,
+    version=VERSION,
+    description=("Command-line program to download image-galleries and "
+                 "-collections from several image hosting sites"),
+    long_description=read("README.rst"),
     url="https://github.com/mikf/gallery-dl",
     download_url="https://github.com/mikf/gallery-dl/releases/latest",
     author="Mike Fährmann",
@@ -104,13 +60,27 @@ setup(
     install_requires=[
         "requests>=2.11.0",
     ],
+    extras_require={
+        "cloudflare": [
+            "pyOpenSSL>=19.0.0",
+            "cryptography>=2.8.0",
+        ],
+        "video": [
+            "youtube-dl",
+        ],
+    },
     packages=[
         "gallery_dl",
         "gallery_dl.extractor",
         "gallery_dl.downloader",
         "gallery_dl.postprocessor",
     ],
-    data_files=data_files,
+    entry_points={
+        "console_scripts": [
+            "gallery-dl = gallery_dl:main",
+        ],
+    },
+    data_files=FILES,
     keywords="image gallery downloader crawler scraper",
     classifiers=[
         "Development Status :: 5 - Production/Stable",
@@ -124,11 +94,11 @@ setup(
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3 :: Only",
         "Topic :: Internet :: WWW/HTTP",
         "Topic :: Multimedia :: Graphics",
         "Topic :: Utilities",
     ],
     test_suite="test",
-    **params
 )