Seems to be a variation on CRC-64-ECMA.
This python version is of course very slow.
That should not be a big issue however, since
it is only required for serialising rather
small save game data.
Currently only supports downloading all saves to a folder,
in the future it should support automatically extracting save
files to the proper directory (at least on Windows).
With some titles such as Metro Exodus there is
even more duplication across files. While this
change does not manage to reduce the limit to
below the default 1 GiB limit, it does bring
it down by about 512 MiB.
Eventually the "download" command will be changed to
set the --no-install flag by default and "update" will
become --update-only. For now remain backwards compatible
to give people a chance to adjust their scripts and habits.
Fixes#18
In the future we might extend this with other features,
such as specific post-install things that some games
may require to work or preconfigured WINE settings.
This is an optimization that aims to fix issues with some titles
such as World War Z that have lots of duplicated files resulting
in a very high runtime cache requirement.
The basic idea is to group files that share lots of chunks together
so the data can be removed from the cache sooner.
For most games this has little to no effect. For some titles with heavy
duplication it can reduce the RAM usage significantly however. For
instance the RAM requirements for World War Z are reduced from 5.3 GiB
to 499 MiB.
Partially fixes#17
Also adds tsv option for list-files and fixes
no_install not being set with --exclude.
Install tags are only present in some titles, I'm not
entirely sure how EGL uses them. Perhaps to allow one
manifest to be used on different platforms? Or to only
download extra assets when the user wants to?
Either way, it's another filtering feature that may be
useful, though for now it's mostly another toy to explore
EPIC's distribution system with.
Useful to exclude unnecessary files such as redistributables.
Can be used together with --prefix to exclude files that would
still match the specified --prefix.
The refactoring didn't take into account that the raw
manifest data still needs to be accessible. Since I did
not want to modify the manifest model to hold the raw
data (waste of RAM), just make the methods return the
raw data again (at least for now)
