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FR: Support Block Dependence

See original GitHub issue

I am getting following error for some lz4 files.

Error: Invalid data block: 12 @579083
    at Decoder.emit_Error (src/node_modules/lz4/lib/decoder_stream.js:64:22)
    at Decoder.uncompress_DataBlock (src/node_modules/lz4/lib/decoder_stream.js:246:9)
    at Decoder._main (src/node_modules/lz4/lib/decoder_stream.js:317:25)
    at Decoder._transform (src/node_modules/lz4/lib/decoder_stream.js:60:7)
    at Decoder.Transform._read (_stream_transform.js:167:10)
    at Decoder.Transform._write (_stream_transform.js:155:12)
    at doWrite (_stream_writable.js:301:12)
    at writeOrBuffer (_stream_writable.js:287:5)
    at Decoder.Writable.write (_stream_writable.js:215:11)
    at IncomingMessage.ondata (_stream_readable.js:536:20)

I added some debug code in “Decoder.prototype.uncompress_DataBlock” function in decoder_stream.json

this.descriptor.blockMaxSize 262144 , decodedSize262144 this.descriptor.blockMaxSize 262144, decodedSize -4 <<< This is where it errors out

Issue Analytics

State:
Created 6 years ago
Reactions:2
Comments:7 (2 by maintainers)

Top GitHub Comments

1reaction

pierreccommented, Aug 31, 2017

The block dependency compression is indeed not implemented in the js version. It would be nice to have it, even though the few samples I tried it on (using the Go version) didnt bring any benefit. I dont have time right now to do the work but if you feel like it I would consider a pull request! Or maybe for the time being, just emit an error when the flag is set.

0reactions

khelkuncommented, Aug 26, 2020

@pierrec Sorry to up my previous question but I’d need to figure out why node-lz4 fails to uncompress some of my lz4 files (not all of them).

So far I’ve used lz4js because it does decode my lz4 files compressed with K4os.Compression.LZ4 C# library.

However lz4js has no stream support and I wish to use streams because I have some big lz4 files to uncompress.

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