patch the uncompress module to be able to deal with remote file

python/obitools3/files/uncompress.pxd

@@ -1,6 +1,7 @@
 #cython: language_level=3
 
 cdef class MagicKeyFile:
+    cdef object stream
     cdef str    stream_mode
     cdef object binary
     cdef bytes  key 

python/obitools3/files/uncompress.pyx

@@ -15,17 +15,20 @@ import io
 cdef class MagicKeyFile:
     def __init__(self,stream,length=2):
         
+        binary=stream
+        self.stream = stream
         self.stream_mode = None 
         if hasattr(stream, "mode"):
             self.stream_mode = stream.mode
-            if 'b' in stream.mode:
+            if (not 'b' in stream.mode and 
-                binary=stream
+                hasattr(stream, "buffer") and 
-            elif hasattr(stream, "buffer") and 'b' in stream.buffer.mode:
+                'b' in stream.buffer.mode):
                 binary=stream.buffer
-            else:
-                self.stream_mode = None
 
-        if self.stream_mode is None:
+        if (self.stream_mode is None and 
+            not (hasattr(stream, 'headers') and 
+                 hasattr(stream.headers, "keys") and
+                 'Content-type' in stream.headers)):
             raise TypeError("stream does not present the good interface")
         
         self.binary=binary
@@ -95,8 +98,11 @@ cdef class CompressedFile:
         if self.accessor is None:
             self.accessor = magic
         
-            
+        if ((hasattr(stream, 'headers') and 
-        if 'b' not in magic.stream_mode:
+             hasattr(stream.headers, "keys") and
+             'Content-type' in stream.headers and
+             stream.headers['Content-type'].startswith('text/')) or
+            'b' not in magic.stream_mode):
             self.accessor = io.TextIOWrapper(self.accessor)
         
     
@@ -106,6 +112,3 @@ cdef class CompressedFile:
     def __iter__(self):
         for x in self.accessor:
             yield x 
-    
-
-