add update-version.py

devscripts/update-version.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+from datetime import datetime
+import sys
+
+
+with open('youtube_dl/version.py', 'rt') as f:
+    exec(compile(f.read(), 'youtube_dl/version.py', 'exec'))
+old_version = locals()['__version__']
+
+old_version_list = old_version.split('.')
+
+old_ver = '.'.join(old_version_list[:3])
+old_rev = old_version_list[3] if len(old_version_list) > 3 else ''
+
+ver = datetime.utcnow().strftime("%Y.%m.%d")
+
+rev = (sys.argv[1:] or [''])[0]  # Use first argument, if present as revision number
+if not rev:
+    rev = str(int(old_rev or 0) + 1) if old_ver == ver else ''
+
+VERSION = '.'.join((ver, rev)) if rev else ver
+
+VERSION_FILE = '''# Autogenerated by devscripts/update-version.py
+
+__version__ = {!r}
+'''.format(VERSION)
+
+with open('youtube_dl/version.py', 'wt') as f:
+    f.write(VERSION_FILE)
+
+print('::set-output name=ytdl_version::' + VERSION)
+print('\nVersion = %s' % VERSION)