Set file size to be "None"

This prevents a misleading file size of 0 bytes being displayed in
girder.

This is working without issues so far.

Signed-off-by: Patrick Avery <patrick.avery@kitware.com>

sources/dicom/large_image_source_dicom/assetstore/dicomweb_assetstore_adapter.py

@@ -110,8 +110,8 @@
 
         if offset != 0 or endByte is not None:
             # FIXME: implement range requests
             msg = 'Range requests are not yet implemented'
             raise NotImplementedError(msg)
 
         from dicomweb_client.web import _Transaction
 
@@ -181,8 +181,8 @@
         # Split the content-type to find the media type and boundary.
         media_type, boundary = self._extract_media_type_and_boundary(response)
         if media_type.lower() != 'multipart/related':
             msg = f'Unexpected media type: "{media_type}". Expected "multipart/related".'
             raise ValueError(msg)
 
         # Ensure we have the multipart/related boundary.
         # The beginning boundary and end boundary look slightly different (in my
@@ -191,9 +191,9 @@
         # since it is before the message body. An end boundary might look like this:
         # \r\n--50d7ccd118978542c422543a7156abfce929e7615bc024e533c85801cd77--
         if boundary is None:
             content_type = response.headers['content-type']
             msg = f'Failed to locate boundary in content-type: {content_type}'
             raise ValueError(msg)
 
         # Both dicomweb-client and requests-toolbelt check for
         # the ending boundary exactly like so:
@@ -226,8 +226,8 @@
                     break
 
             if not header_found:
                 msg = 'Failed to find header in response content'
                 raise ValueError(msg)
 
             # Now the header has been finished. Stream the data until
             # we encounter the ending boundary or finish the data.
@@ -236,17 +236,17 @@
                 # Ensure the chunk is large enough to contain the ending_size - 1, so
                 # we can be sure the ending won't be split across more than 2 chunks.
                 while len(chunk) < ending_size - 1:
                     try:
                         chunk += next(iterator)
                     except StopIteration:
                         break
 
                 # Check if the ending is split between the previous and current chunks.
                 if ending in prev_chunk + chunk[:ending_size - 1]:
                     # We found the ending! Remove the ending boundary and return.
                     data = prev_chunk + chunk[:ending_size - 1]
                     yield data.split(ending, maxsplit=1)[0]
                     return
 
                 if prev_chunk:
                     yield prev_chunk
@@ -261,7 +261,7 @@
                 return
 
             # We should have encountered the ending earlier and returned
             msg = 'Failed to find ending boundary in response content'
             raise ValueError(msg)
 
     def importData(self, parent, parentType, params, progress, user, **kwargs):
@@ -356,7 +356,7 @@
                     reuseExisting=True,
                     assetstore=self.assetstore,
                     mimeType='application/dicom',
-                    size=0,
+                    size=None,
                     saveFile=False,
                 )
                 file['dicom_uids'] = {