clvcode <config-file>
config-file: single filename per line, to calculate sums for
output: log lines with filename + clover code (assumes SNES)
I have an SNES Classic that I upgraded from Hackchi2 to Hackchi2 CE.
When I did it, I accidentally cleared out all my ROMs on the device. Luckily I
had them still on my computer, but as .7z archives that contained lots of
different versions of the games. Particularly for translated games (FFV, Tales
of Phantasia, etc.) which translation I picked wasn't obvious.
After re-installing and picking reasonable defaults, Hackchi2 CE showed me I had a set of stranded save states. Those states are linked to the games by some CRC32-based code. So to figure out which ones I was missing, I unzipped all the archives and ran this binary to find the equivalent codes.
I'm mostly familiar with C++/absl so used it here.
The specific CRC32 and "code" generating logic I took from the Hackchi repo and adapted to C++.
It's not super fast, there are faster ways of doing CRC32 that aren't a byte at a time. But I didn't care.
I also used indirection (via a config file) becaue I'm lazy. I didn't want to generate the table each time because I was (dumbly) worried about performance, so originally I had the binary reading each filename from args. But then I spent a few minutes figuring out max arglength and quoting and just decided to dump filenames into a config file. For reference, you can do that with something like:
find $PWD -name "*.smc" > files.config