How to compare files in a directory with files in an archive?

Question

rar

Such a task:
There are "reference" files that are collected into several archives, and then into one common archive.
There is already unpacked all this business with some changed files.
You need to compare the "reference" files in the archive with the files in the directory. Files are compared by content.

How it is better to implement it? I have not yet found a way to compare files without unpacking the archives. Is it even possible without unpacking?

Answer 1

It is impossible without unpacking, but you can unpack into memory, not to disk.

Answer 2

ZipArchiveEntry.Open() And then compare the resulting Stream with the file on disk