I'd like to be able to determine the version and id of any mod.

Basically, I am creating a service that will read the jar files and determine if an update is available, or even just indicate to a downloader that the mod is already installed.

How can I do this? I found that there is a `META-INF/mods.toml` that appears to be in the right direction, except that checking some mods like appleskin has `version="${file.jarVersion}"` which... isnt a version.

Looking around, i see that there is a `MANIFEST.MF` which is mostly useless for many of them, but appleskin had an actual version in it `Implementation-Version: 2.5.1+mc1.20.2`
Is this something i can rely on? either `mods.toml`, but if it has `"${file.jarVersion}"` then it's in `MANIFEST.MF`?

Or is there some pitfall i'm missing?

13 hours ago, TekExplorer said:

Basically, I am creating a service that will read the jar files and determine if an update is available, or even just indicate to a downloader that the mod is already installed.

Why, forge already has an update checker?

1 hour ago, Luis_ST said:

Why, forge already has an update checker?

Thats not the point. i need to be able to check what exists without running the jar

Edited November 12, 20231 yr by TekExplorer
oops

What did you try to achieve?

jar.manifestVersion is the version you found in the manifest. So if a mod specifies that as their version, then check the manifest.

You could also checkout ModInfo#getVersion