Question 1

How do I extract a specific file from an archive using go-unarr?

Accepted Answer

Use the a.EntryFor("filename.txt") method to target a known file, then read it with a.ReadAll(). This allows direct access without iterating through all entries, as shown in the library examples for efficient file retrieval.

Question 2

Does go-unarr support password-protected or encrypted RAR files?

Accepted Answer

Support depends on the underlying unarr library, which may have limited encryption capabilities. For fully secure archives, check the unarr documentation or consider alternative libraries with broader encryption support.

Question 3

go-unarr vs Go's standard archive/zip: which is better for my project?

Accepted Answer

Choose go-unarr if you need multi-format support beyond ZIP and TAR, such as RAR and 7z. For pure ZIP handling, archive/zip is native and more efficient, but go-unarr offers broader compatibility across archive types.

Question 4

How can I handle large archives with go-unarr to avoid memory issues?

Accepted Answer

Use streaming access by reading entries sequentially with a.Entry() and a.Read() in chunks, rather than a.ReadAll(), to process files incrementally and reduce memory footprint, as suggested in the examples.

Question 5

Is go-unarr suitable for use in containerized or serverless environments?

Accepted Answer

Yes, but the C dependency may require static linking or ensuring libunarr is available, which can increase image size. Use build tags like static to mitigate this, though it adds complexity to the build process.

Question 6

How to install go-unarr with an external libunarr library?

Accepted Answer

Use the extlib build tag during installation or compilation, and set up pkg-config if needed, as detailed in the README's build tags section, to link against an existing unarr installation.

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