Daan MeijerandClaude Opus 5.5
d446bb57df
7z keeps its file list at the end of the archive, so the 7z-tail candidates (the last segment of the highest volume) were queued but never probed, and the .7z.001 start only gave the type. The prober now claims 7z-tail candidates after the archives; lib/sevenzip finds the end header in the article, decodes the LZMA-packed header (a TypeScript port of the LZMA SDK's reference decoder) and lists the files with their sizes. An AES-encrypted header means passworded without names. Names feed the inner name and the judge's fake rule. An unsplit .7z of several segments now also gets a tail candidate, and .zip files an archive candidate: their first segment's local headers give the first entries and whether they are encrypted. Both in the Rust edge and the TypeScript indexer. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
21 lines
880 B
TypeScript
21 lines
880 B
TypeScript
import { test } from '@japa/runner'
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import { readFileSync } from 'node:fs'
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import { lzmaDecode, LzmaError } from '#lib/sevenzip/lzma'
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const fixture = (name: string) => readFileSync(new URL(`../../fixtures/sevenzip/${name}`, import.meta.url))
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test.group('probe / LZMA', () => {
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test('decodes a stream Python made (.lzma: 5 property bytes, the size, the raw stream)', ({ assert }) => {
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const alone = fixture('sample.lzma')
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const expected = fixture('sample.bin')
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const decoded = lzmaDecode(alone.subarray(0, 5), alone.subarray(13), expected.length)
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assert.isTrue(decoded.equals(expected))
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})
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test('a cut-off or damaged stream throws LzmaError', ({ assert }) => {
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const alone = fixture('sample.lzma')
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const size = fixture('sample.bin').length
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assert.throws(() => lzmaDecode(alone.subarray(0, 5), alone.subarray(13, 200), size), LzmaError)
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})
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})
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