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Sets the gzip comment bitfield

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This commit is contained in:
n1073645 2019-12-16 17:05:06 +00:00
parent 928178716a
commit 3a1a6a94d2
2 changed files with 16 additions and 10 deletions
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16
src/core/operations/Gzip.mjs
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@ -6,9 +6,10 @@
import Operation from "../Operation.mjs";
import {COMPRESSION_TYPE, ZLIB_COMPRESSION_TYPE_LOOKUP} from "../lib/Zlib.mjs";
import zlibAndGzip from "zlibjs/bin/zlib_and_gzip.min.js";
// import zlibAndGzip from "zlibjs/bin/zlib_and_gzip.min.js";
import gzip from "zlibjs/bin/gzip.min.js";
const Zlib = zlibAndGzip.Zlib;
const Zlib = gzip.Zlib;
/**
* Gzip operation
@ -73,12 +74,15 @@ class Gzip extends Operation {
options.filename = filename;
}
if (comment.length) {
options.flags.fcommenct = true;
options.flags.comment = true;
options.comment = comment;
}
const gzip = new Zlib.Gzip(new Uint8Array(input), options);
return new Uint8Array(gzip.compress()).buffer;
const gzipObj = new Zlib.Gzip(new Uint8Array(input), options);
const compressed = new Uint8Array(gzipObj.compress());
if (options.flags.comment) {
compressed[3] |= 0x10;
}
return compressed.buffer;
}
}