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add deflate_level to config

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This commit is contained in:
Bart Butler 2018-02-15 09:44:31 -08:00
parent 7e1731f2bb
commit 7286116f1c
2 changed files with 15 additions and 6 deletions
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2
src/config/config.js
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@ -30,6 +30,8 @@ export default {
encryption_cipher: enums.symmetric.aes256,
/** @property {Integer} compression Default compression algorithm {@link module:enums.compression} */
compression: enums.compression.uncompressed,
/** @property {Integer} deflate_level Default zip/zlib compression level, between 1 and 9 */
deflate_level: 6,
/**
* Use Authenticated Encryption with Additional Data (AEAD) protection for symmetric encryption.

19
src/packet/compressed.js
View File

@ -31,6 +31,7 @@
*/
import pako from 'pako';
import config from '../config';
import enums from '../enums.js';
import util from '../util.js';
import Bzip2 from '../compression/bzip2.build.js';
@ -38,6 +39,12 @@ import Bzip2 from '../compression/bzip2.build.js';
const nodeZlib = util.getNodeZlib();
const Buffer = util.getNodeBuffer();
function node_zlib(func, options = {}) {
return function (data) {
return func(data, options);
};
}
function pako_zlib(constructor, options = {}) {
return function(data) {
const obj = new constructor(options);
@ -51,23 +58,23 @@ let decompress_fns;
if (nodeZlib) { // Use Node native zlib for DEFLATE compression/decompression
compress_fns = {
// eslint-disable-next-line no-sync
zip: nodeZlib.deflateRawSync,
zip: node_zlib(nodeZlib.deflateRawSync, { level: config.deflate_level }),
// eslint-disable-next-line no-sync
zlib: nodeZlib.deflateSync,
zlib: node_zlib(nodeZlib.deflateSync, { level: config.deflate_level }),
bzip2: Bzip2.compressFile
};
decompress_fns = {
// eslint-disable-next-line no-sync
zip: nodeZlib.inflateRawSync,
zip: node_zlib(nodeZlib.inflateRawSync),
// eslint-disable-next-line no-sync
zlib: nodeZlib.inflateSync,
zlib: node_zlib(nodeZlib.inflateSync),
bzip2: Bzip2.decompressFile
};
} else { // Use JS fallbacks
compress_fns = {
zip: pako_zlib(pako.Deflate, { raw: true }),
zlib: pako_zlib(pako.Deflate),
zip: pako_zlib(pako.Deflate, { raw: true, level: config.deflate_level }),
zlib: pako_zlib(pako.Deflate, { level: config.deflate_level }),
bzip2: Bzip2.compressFile
};