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Simplify the nextChunk handling in the DecryptStream class

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This is old code, that can be simplified a tiny bit with modern JavaScript features.
This commit is contained in:
Jonas Jenwald 2026-04-30 11:40:05 +02:00
parent d92db130da
commit f26b98c7c4
1 changed files with 5 additions and 11 deletions
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16
src/core/decrypt_stream.js
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@ -18,30 +18,24 @@ import { DecodeStream } from "./decode_stream.js";
const chunkSize = 512;
class DecryptStream extends DecodeStream {
#nextChunk = null;
constructor(str, maybeLength, decrypt) {
super(maybeLength);
this.stream = str;
this.dict = str.dict;
this.decrypt = decrypt;
this.nextChunk = null;
this.initialized = false;
}
readBlock() {
let chunk;
if (this.initialized) {
chunk = this.nextChunk;
} else {
chunk = this.stream.getBytes(chunkSize);
this.initialized = true;
}
let chunk = this.#nextChunk ?? this.stream.getBytes(chunkSize);
if (!chunk?.length) {
this.eof = true;
return;
}
this.nextChunk = this.stream.getBytes(chunkSize);
const hasMoreData = this.nextChunk?.length > 0;
this.#nextChunk = this.stream.getBytes(chunkSize);
const hasMoreData = this.#nextChunk?.length > 0;
const decrypt = this.decrypt;
chunk = decrypt(chunk, !hasMoreData);