koni_rar 0.8.0

Clean-room RAR4/RAR5 reader for the koni_archive ecosystem, including CBR comic archives.

koni_rar

Clean-room RAR4/RAR5 reader for the koni_archive ecosystem, including CBR comic archives. Pure Dart, runs everywhere Dart runs including the web (dart2js and dart2wasm).

Most applications should depend on the koni_archive facade, which registers this format automatically:

import 'package:koni_archive/io.dart';

final archive = await openArchiveFile('volume01.cbr'); // auto-detected
final page = archive.glob('*.jpg').first;
await for (final chunk in archive.openRead(page)) {
  // clean-room RAR5 decode, CRC-verified
}

Current scope: RAR5 store + compressed (methods 1–5), solid and non-solid, with delta/x86/ARM filters; RAR4 store + method-29 (the classic v29 LZSS/Huffman), solid, the RarVM filters (the standard delta/x86/RGB/ audio programs plus a generic interpreter for any other program), PPMd variant H (-mct, solid and non-solid, including a mid-file PPMd→method-29 switch), and RAR 2.0/2.6 (v20/v26) LZ. Password-protected file data and encrypted headers (-hp) decrypt for both generations via ArchiveReadOptions.password: RAR5 (AES-256, PBKDF2-HMAC-SHA256, check-value verification) and RAR4 (AES-128, iterated-SHA-1 KDF). Multi-volume sets read via ArchiveReadOptions.nextVolume. Remaining typed errors are narrow and rare (a filter reached through a PPMd escape, a solid-run mid-file switch, RAR 1.5, the RAR 2.x audio block); RAR writing is out of scope. See doc/features.md for the full matrix.

Provenance: clean-room implementation. See doc/rar-provenance.md (the owner-approved policy) and doc/references.md / NOTICE for attribution. No unrar or GPL source was consulted. See doc/features.md and doc/notes.md.