Add support for IronPython

youtube_dl/compat.py

@@ -2897,9 +2897,24 @@ except TypeError:
         if isinstance(spec, compat_str):
             spec = spec.encode('ascii')
         return struct.unpack(spec, *args)
+
+    class compat_Struct(struct.Struct):
+        def __init__(self, fmt):
+            if isinstance(fmt, compat_str):
+                fmt = fmt.encode('ascii')
+            super(compat_Struct, self).__init__(fmt)
 else:
     compat_struct_pack = struct.pack
     compat_struct_unpack = struct.unpack
+    if platform.python_implementation() == 'IronPython' and sys.version_info < (2, 7, 8):
+        class compat_Struct(struct.Struct):
+            def unpack(self, string):
+                if not isinstance(string, buffer):
+                    string = buffer(string)
+                return super(compat_Struct, self).unpack(string)
+    else:
+        compat_Struct = struct.Struct
+
 
 try:
     from future_builtins import zip as compat_zip
@@ -2941,6 +2956,7 @@ __all__ = [
     'compat_HTMLParseError',
     'compat_HTMLParser',
     'compat_HTTPError',
+    'compat_Struct',
     'compat_b64decode',
     'compat_basestring',
     'compat_chr',