JuliaIO / JuliaIO/TranscodingStreams.jl
Support Lempel–Ziv–Welch (LZW) - as used in the Unix .Z compress and decompress
Nobody has claimed this yet.
- Dominant language
- Julia
- Stars
- 90
- Forks
- 25
- PR merge metrics
- No merged PRs in 30d
Description
Would be great to have Lempel–Ziv–Welch (LZW) compression and decompression available in the Julia ecosystem somewhere. Especially for Windows users, since Unix users have this default available via the compress utility. A codec in TranscodingStreams.jl seems like the most obvious candidate to me, although I have no idea how difficult it is to adhere to the transcoding interface.
There are pure Python and C implementations for reference if we want, like in the Python unlzw3 package. Less than 200 lines of source code (note: only decompression, no compression).
Might have a go at it myself if I find some time, but would like to create some awareness. I couldn't find a Julia discourse topic nor any Github issue on LZW yet, please link if there is one already.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reviewing TranscodingStreams.jl's transcoding interface and the linked unlzw3 reference implementation. Determine the scope for both LZW compression and decompression, then add the codec and tests demonstrating support for Unix .Z data.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- julia
- Domain
- tooling
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100