How to DEFLATE with a command line tool to extract a git object?

git blob deflate
Felix Geisendörfer picture Felix Geisendörfer · Jul 5, 2010 · Viewed 54.9k times · Source

I'm looking for a command line wrapper for the DEFLATE algorithm.

I have a file (git blob) that is compressed using DEFLATE, and I want to uncompress it. The gzip command does not seem to have an option to directly use the DEFLATE algorithm, rather than the gzip format.

Ideally I'm looking for a standard Unix/Linux tool that can do this.

edit: This is the output I get when trying to use gzip for my problem:

$ cat .git/objects/c0/fb67ab3fda7909000da003f4b2ce50a53f43e7 | gunzip

gzip: stdin: not in gzip format

Answer

araqnid picture araqnid · Jul 6, 2010

Something like the following will print the raw content, including the "$type $length\0" header:

perl -MCompress::Zlib -e 'undef $/; print uncompress(<>)' \
     < .git/objects/27/de0a1dd5a89a94990618632967a1c86a82d577

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