IfcStore can't open .ifcxml in .ifczip

[nemarkovic]

Short summary describing the issue. (3-5 sentences)
When I try to open a .ifczip that has a .ifcxml in it I get an NotSupportedException.

Assemblies and versions affected:

Which assemblies/packages and their versions are known to be affected. E.g. Xbim.Essentials 4.0.29

Steps (or code) to reproduce the issue:

1. zip a .ifcxml
2. try to open it

IModel model = IfcStore.Open(ifcFilename, null, -1, progressDelegate, XbimDBAccess.Read);

A simple set of steps to reproduce the issue. Provide a small sample file is required and/or
a small sample of the failing code (or reference a commit / gist)

Minimal file to reproduce the issue:

IFC files need to be zipped to be uploaded. Then just drag & drop here
Samples.zip

Expected behavior:

Opening the .ifcxml within the .ifczip file

What would you expect to happen

Actual behavior or exception details:.

System.Exception: 'Error reading XML, Line=19, Position=251, Tag='''
Inner Exception: NotSupportedException: This operation is not supported.
https://github.com/xBimTeam/XbimEssentials/blob/master/Xbim.IO.MemoryModel/Xml/XbimXmlReader3.cs
It breaks at line 896 then it continues to fall through.
What actually is happening

Additional Details

Optional, details of the root cause if known.
Delete this section if you have no additional details to add.

[andyward]

Have you tried this with the latest v5 Xbim.Essentials? There was a lot of refactoring around the IfcStore in the last release.

[nemarkovic]

I'm currently using v5 (5.0.225)

[andyward]

This should be fixed in develop. I've pushed through to XBimXplorer so you can test.

Took a while to reproduce the issue: it only occurs when using a Progress delegate is provided on file open for zipped IfcXml streams. Root cause is that the DeflateStream is not seekable, so progress reporting was failing.