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by yjftsjthsd-h 22 hours ago
Hey, this is also my interest. I was just looking into whether it was possible to e.g. build an archive extractor that runs like a normal program but does the actual extraction completely in wasm. Unfortunately, AFAICT it's possible but requires custom code; you can't (yet, I hope) just compile unzip/libarchive/whatever with CC=wasicompiler and get a sandboxed binary. But we're getting close.
2 comments
nl 22 hours ago
What do you mean? You absolutely can run compression in WASM.

For example here is Gzip in WASM: https://github.com/ColinTimBarndt/wasm-gzip

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fc417fc802 21 hours ago
You should be able to do exactly that though? Why do you think you can't?

You will of course need to include a lot of support code to provide the relevant syscalls and otherwise emulate the environment that the code expects. But there are plenty of examples of that at this point.

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yjftsjthsd-h 1 hour ago
Yeah, it's all that support code that I don't want to write. I want to (roughly) just

  tar -xf unzip.tar.gz && cd unzip
  ./configure CC=wasmcc
  make
  wasmruntime unzip.wasm testfile.zip
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