Add partial (listing and decompressing only) support for RAR

[lmkra]

Attempt to address #152 using https://github.com/muja/unrar.rs crate.

[lmkra]

ARMv7 CI failure seems to be an upstream issue: muja/unrar.rs#35

[marcospb19]

Thanks for the follow ups!

I temporarily disabled ARMv7 to see if CI succeeds in other targets, it's failing on Windows, let me know whether you know how to fix it.

[lmkra]

MSVC target on Windows should work fine, it's only MinGW one that fails.
I've proposed a fix for that: muja/unrar.rs#37

In the meantime I've temporarily switched used unrar.rs version to my own fork, which contains all of upstream-proposed fixes.

[lmkra]

Situation now seems to be that:

• x86_64-pc-windows-gnu target builds correctly
• ...but integrations tests fail due to ouch binary being dynamically linked to libstdc++-6.dll, which is provided by MinGW compiler and is not found in standard Windows shell search path.

While setting up $PATH variable to MinGW install directory or shipping aforementioned library together with ouch.exe could be considered as a workarounds, but I think that better solution would be to statically link against libstdc++ in ouch executable.
Just need to find out how to convince cargo to do it...

[marcospb19]

Honestly, I'm absolutely clueless 😄 .

[lmkra]

Seems to be working now 😃

[marcospb19]

Seems to be working now 😃

Amazing!

I think it's better not to merge right now because it would block new Ouch releases from happening, I can only publish a version on crates.io when all dependencies are fetched from crates.io itself, I guess we'll have to wait for a new unrar release (but we don't know when that comes out).

Does that make sense to you? 🤔

[lmkra]

Thanks!

And yes, that makes perfect sense to me 👍

[lmkra]

New unrar has finally landed on crates.io :)
Therefore I've rebased this PR against current master branch and removed all temporary patching.

[marcospb19]

That's awesome! Thank you for keeping an eye on that.

[marcospb19]

🎉