Is there a way to skip reading certain tags?

[qarmin]

Having a very large Vec (a few hundred MB), I'm wondering if it's possible to load the DICOM into memory with all its parameters, but without certain tags (e.g. PixelData), so that the memory footprint would be ~3 MB instead of 300 MB.

Looking at the API, I only found read_until, which stops reading at a specified tag, but I couldn't find a function like read_except(tags: &[Tag])

Does anything like that exist?
If not, is there a workaround?

[Enet4]

read_until was introduced as an easy enabler for the common use case of excluding pixel data and other large values, which usually sit at the very end of a DICOM object. read_except in specific isn't available at the moment, though I agree that it would make for an interesting addition, first as part of the collector API, then eventually in other parts.

Until then, some more notes and possible workarounds:

1. With the collector API, you can fetch smaller portions of DICOM data at a time, thus using less memory. One can even read data onto separate in-memory DICOM objects and discard them afterwards. A method to skip_until would probably be interesting here.
2. The lazy set reader API has methods to skip an element's data value instead of reading it into memory. This is the API that fuels other high-level abstractions.