Function extractBZIP2

src/core/lib/FileSignatures.mjs:3645–3672

(bytes, offset)

 * @returns {Uint8Array}
 */
export function extractBZIP2(bytes, offset) {
    const stream = new Stream(bytes.slice(offset));

    // The EOFs shifted between all possible combinations.
    const lookingfor = [
        [0x77, 0x24, 0x53, 0x85, 0x09],
        [0xee, 0x48, 0xa7, 0x0a, 0x12],
        [0xdc, 0x91, 0x4e, 0x14, 0x24],
        [0xb9, 0x22, 0x9c, 0x28, 0x48],
        [0x72, 0x45, 0x38, 0x50, 0x90],
        [0xbb, 0x92, 0x29, 0xc2, 0x84],
        [0x5d, 0xc9, 0x14, 0xe1, 0x42],
        [0x2e, 0xe4, 0x8a, 0x70, 0xa1],
        [0x17, 0x72, 0x45, 0x38, 0x50]
    ];

    for (let i = 0; i < lookingfor.length; i++) {
        // Continue until an EOF.
        stream.continueUntil(lookingfor[i]);
        if (stream.getBytes(5).join("") === lookingfor[i].join(""))
            break;

        // Jump back to the start if invalid EOF.
        stream.moveTo(0);
    }
    stream.moveForwardsBy(4);
    return stream.carve();
}


/**