oaknut-zip

Read ZIP archives that carry Acorn file metadata — the load and execution addresses, access bits, and RISC OS filetypes that ordinary unzip tools silently discard.

oaknut.zip recovers that metadata from three sources, in order of authority:

1. SparkFS ARC0 extra fields embedded in the archive’s own structure — the most reliable source.

2. Bundled .inf sidecars — both the traditional filename load exec length [access] form and the PiEconetBridge owner load exec perm [homeof] form.

3. Unix filename suffixes such as ,xxx (filetype) or ,llllllll,eeeeeeee (load/exec).

Where several sources describe the same member, the higher-authority one wins.