Extract from text file corrupts non-UTF8 files

[dkarlovi]

Bug Description

If you're using the "Extract from text file" node to convert binary data into JSON, it will corrupt the data if it's not UTF8.

To Reproduce

1. create a file, put S0FSTE9WScSGICA= after having base64-decoded it into it, this contains Karlović encoded using Windows-1250
2. read it with Read file
3. extract it with Extract from text file
4. it gets corrupted

If I use this in the following code node without it, it works:

const body = iconv.decode(await this.helpers.getBinaryDataBuffer($itemIndex, 'file_0'), 'cp1250');

If I use the Extract node, it gets corrupted.

Expected behavior

Non-UTF8 encodings also work

Operating System

Docker image n8nio/n8n

n8n Version

1.59.3

Node.js Version

v20.17.0

Database

PostgreSQL

Execution mode

main (default)

[Joffcom]

Hey @dkarlovi,

We have created an internal ticket to look into this which we will be tracking as "GHC-251"