From: "??" <xudifsd@xxxxxxxxx> Sent: Monday, February 20, 2012 4:45 AM
2012/2/20 Philip Oakley <philipoakley@xxxxxxx>:
If I have a renamed file which is a git object, such a "Git_Object", was
8c-something-or-other, what is the easiest way of examining / decoding /
recreating the original file (either as its sha1, or a cat-file).
I don't think I fully understood what you mean, I assume you just move
an object file from $GIT_DIR/objects/ to somewhere and rename it,
let's call it "obj", so if you want to exam its content you can just
simply call "git cat-file -p obj". And you can also use "git cat-file
-t obj" to exam its object type. If it's a blob you can use "git
cat-file -p obj > original" to recreate it, else it's meaningless to
recreate it.
When I tried it from my home directory (not in a git directory):
$ git cat-file -p Git-Object
fatal: Not a git repository (or any of the parent directories): .git
Because its sha1 isn't yet known I can't put it into the correct
.git/objects/xx/ subdirectory of an fresh 'git init', and I have located an
unzip programme that will take the plain git object and decode it - they all
expect archives.
I've described the background use-case at
http://stackoverflow.com/questions/9341278/how-to-track-the-git-directory-in-git-in-its-own-store -
the edit links to a typical corporate scenario.
Even just locating a zlib implementation that simply confirms the file
stream is compressesd and deflates it would be a start.
Philip
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