add content-encoding for precompressed deps

copyparty/util.py

@@ -4,6 +4,7 @@ from __future__ import print_function, unicode_literals
 
 import re
 import sys
+import struct
 import hashlib
 import threading
 import subprocess as sp  # nosec
@@ -416,5 +417,11 @@ def chkcmd(*argv):
     return sout, serr
 
 
+def gzip_orig_sz(fn):
+    with open(fsenc(fn), 'rb') as f:
+        f.seek(-4, 2)
+        return struct.unpack('I', f.read(4))[0]
+
+
 class Pebkac(Exception):
     pass