mary.my.id
streaming RAR extractor
jsr.io/@mary/rar
jsr
refactor: replace local crc32 with @mary/crc32
author
Mary
date
(May 28, 2026, 10:42 AM +0700)
commit
9bfb5ddc
9bfb5ddcf7d450ca5c7173cecd355ecfcffaf086
parent
e424179e
e424179e143bf0b921f9fc0821f6603c7c09ffa5
+26
-46
+1
deno.json
+1
deno.json
+5
deno.lock
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deno.lock
···
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{
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"version": "5",
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"specifiers": {
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"jsr:@mary/crc32@0.1": "0.1.0",
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"jsr:@mary/ds-queue@~0.1.3": "0.1.3",
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"jsr:@mary/mutex@0.1": "0.1.0",
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"jsr:@std/assert@1": "1.0.19",
···
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"npm:@types/node@*": "24.1.0"
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},
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"jsr": {
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"@mary/crc32@0.1.0": {
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"integrity": "cadbfd1dc860a228b53dc180534f903eb0db9c0cc79eca109b9437791514a756"
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},
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"@mary/ds-queue@0.1.3": {
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"integrity": "a743caa397b924cb08b0bbdffc526eb1ea2d3fc9e675da6edc137c437fc93c76"
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},
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},
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"workspace": {
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"dependencies": [
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"jsr:@mary/crc32@0.1",
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"jsr:@mary/ds-queue@~0.1.3",
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"jsr:@mary/mutex@0.1"
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]
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-1
lib/rar3/block.ts
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-1
lib/rar3/block.ts
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* type-specific payload. data follows immediately after the header bytes.
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*/
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import { crc32 } from '@mary/crc32';
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import {
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ChecksumMismatchError,
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InvalidSignatureError,
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MalformedArchiveError,
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TruncatedArchiveError,
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} from '../errors.ts';
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import { crc32 } from '../utils/crc32.ts';
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import { BlockFlag, BlockType, EndArcFlag, FileFlag, MainFlag, RAR3_SIGNATURE } from './constants.ts';
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// #region cursor
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lib/rar3/extract.ts
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lib/rar3/extract.ts
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import { crc32 } from '@mary/crc32';
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import {
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ChecksumMismatchError,
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InvalidSignatureError,
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TruncatedArchiveError,
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} from '../errors.ts';
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import { concat, decodeUtf8From, read } from '../utils/buffer.ts';
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import { crc32 } from '../utils/crc32.ts';
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import {
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crc32Verifier,
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type DataSegment,
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lib/rar3/unpack.ts
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lib/rar3/unpack.ts
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* of RARLAB's unrar.
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*/
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import { crc32 } from '@mary/crc32';
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import { ChecksumMismatchError, MalformedArchiveError, UnsupportedFeatureError } from '../errors.ts';
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import { crc32 } from '../utils/crc32.ts';
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import type { StreamReader } from '../utils/stream-reader.ts';
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import { PPMD_CORRUPT, PPMD_END_OF_DATA, type PpmdByteIn, RAR3PpmdModel } from './ppmd.ts';
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-1
lib/rar5/block.ts
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lib/rar5/block.ts
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lib/rar5/extract.ts
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lib/rar5/extract.ts
···
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import { crc32 } from '@mary/crc32';
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import {
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ChecksumMismatchError,
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InvalidSignatureError,
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UnsupportedFeatureError,
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} from '../errors.ts';
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import { concat, decodeUtf8From, read } from '../utils/buffer.ts';
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import { crc32 } from '../utils/crc32.ts';
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import {
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crc32Verifier,
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type DataSegment,
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lib/utils/crc32.ts
-36
lib/utils/crc32.ts
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const TABLE = /*#__PURE__*/ (() => {
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const table = new Uint32Array(256);
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for (let idx = 0; idx < 256; idx++) {
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let c = idx;
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for (let bit = 0; bit < 8; bit++) {
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c = c & 1 ? 0xedb88320 ^ (c >>> 1) : c >>> 1;
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}
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table[idx] = c;
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}
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return table;
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})();
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/**
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* computes the CRC-32 checksum of a byte sequence, matching the algorithm RAR
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* uses for header and file data checksums.
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*
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* the function can be called incrementally by feeding the previous result back
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* as `seed`, allowing a checksum to be built up across streamed chunks.
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*
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* @param data bytes to checksum
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* @param seed running checksum from a previous chunk, or 0 to start fresh
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* @returns the unsigned 32-bit checksum
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*/
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export const crc32 = (data: Uint8Array, seed: number = 0): number => {
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let crc = (seed ^ 0xffffffff) >>> 0;
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for (let idx = 0, len = data.length; idx < len; idx++) {
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crc = TABLE[(crc ^ data[idx]) & 0xff] ^ (crc >>> 8);
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}
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return (crc ^ 0xffffffff) >>> 0;
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};
+2
-1
lib/utils/segments.ts
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lib/utils/segments.ts
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scripts/build-rar3-long-password-fixture.ts
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scripts/build-rar3-long-password-fixture.ts
···
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* run: `deno run -A scripts/build-rar3-long-password-fixture.ts`
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*/
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import { crc32 } from '@mary/crc32';
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import { rar3DeriveKey } from '../lib/rar3/crypto.ts';
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import { importAesKey } from '../lib/rar5/crypto.ts';
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import { BlockFlag, BlockType, CompressMethod, FileFlag, HostOs } from '../lib/rar3/constants.ts';
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import { crc32 } from '../lib/utils/crc32.ts';
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const PASSWORD = 'the-rarbug-makes-this-key-funny!';
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const SALT = new Uint8Array([0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08]);
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-1
tests/rar3-extract.test.ts
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tests/rar3-extract.test.ts
···
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import { crc32 } from '@mary/crc32';
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import { MissingPasswordError, MissingVolumeError } from '../lib/errors.ts';
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import { fromUint8Array } from '../lib/reader/common.ts';
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import { unrar3 } from '../lib/rar3/extract.ts';
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import { crc32 } from '../lib/utils/crc32.ts';
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/**
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* @module
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tests/rar3-oldlzss.test.ts
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tests/rar3-oldlzss.test.ts
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tests/rar5-extract.test.ts
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-1
tests/rar5-extract.test.ts
···
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import { crc32 } from '@mary/crc32';
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import { InvalidPasswordError, MissingPasswordError, MissingVolumeError } from '../lib/errors.ts';
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import { fromUint8Array } from '../lib/reader/common.ts';
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import { fromFsFile } from '../lib/reader/deno.ts';
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import { unrar5 } from '../lib/rar5/extract.ts';
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import { crc32 } from '../lib/utils/crc32.ts';
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/**
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* @module