ARC

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SEA ARC Preview.

At a glance

How much Poka reads

B4 Summary. The container and metadata are read and summarised (counts, properties, structure), but the main content is not rendered.

Confidence: medium (the reviewer read the code). Basis: Reviewed 2026-10-26: read parsers/poka-arc/src/main.rs (480 lines) and plugin.json. The five unit tests cover the member walk and the integrity findings (a member running past the end, a missing end-of-archive record); the corpus has no .arc sample. Covers .arc. The card walks the member records and shows the members found, methods seen, compressed and original totals and ratio, and the first 24 members. Judgement: B4: the archive is summarised and partly listed, but no member is extracted or shown.

What Poka does not read

• Member contents are not extracted or shown
• Only the first 24 members are listed
• Other formats that use .arc (Internet Archive web archives, FreeArc) are refused as not SEA ARC (judgement from the code)
• Files over 256 MiB are cut (flagged)

Libraries

Libraries Poka uses or has assessed for this format, with the status, licence and language the registry records.

• unarc-rs (candidate; MIT OR Apache-2.0; Rust; https://github.com/mkrueger/unarc-rs) — Extraction of legacy archives; ARC/PAK .arc listed as full support; repo sidebar shows Apache-2.0, README says MIT OR Apache-2.0
• nomarch (candidate; licence unconfirmed; C; https://www.svgalib.org/rus/nomarch.html) — De-archiver for ARC/ARK; project page states no licence (distro metadata in search results suggested GPL-2.0-or-later); language inferred from changelog; command-line tool, last page update 2002

Sources

• parsers/poka-arc/src/main.rs
• parsers/poka-arc/plugin.json