brotli CLI: how to stop continuous compression and write valid file? #528

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claunia · 2026-01-29T20:45:14Z

claunia commented

2026-01-29 20:45:14 +00:00

Originally created by @derhuerst on GitHub (Dec 3, 2024).

I'm trying to compress a the data from continuous stream of logs for a certain period of time. At some point, I want the brotli CLI to stop compressing and write a clean/valid brotli-compressed file.

bash -c 'while true; do echo "some log line"; sleep 1; done' | brotli >logs.txt.br
# After some time, I send SIGINT via ctrl + c.
# ^C

# Once the `brotli` process has exited, I would expect to be able to read the compressed file. However, this is not possible:
brotli -d foo.txt.br | wc -l
# corrupt input [foo.txt.br]
#        0

This also doesn't work with SIGQUIT, SIGTERM and SIGHUP.

Originally created by @derhuerst on GitHub (Dec 3, 2024). I'm trying to compress a the data from continuous stream of logs for a certain period of time. At some point, I want the `brotli` CLI to stop compressing and write a clean/valid brotli-compressed file. ```shell bash -c 'while true; do echo "some log line"; sleep 1; done' | brotli >logs.txt.br # After some time, I send SIGINT via ctrl + c. # ^C # Once the `brotli` process has exited, I would expect to be able to read the compressed file. However, this is not possible: brotli -d foo.txt.br | wc -l # corrupt input [foo.txt.br] # 0 ``` This also doesn't work with `SIGQUIT`, `SIGTERM` and `SIGHUP`.

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Reference: starred/brotli#528