mirror of
https://github.com/git-learning-game/oh-my-git.git
synced 2024-11-03 19:04:40 +01:00
34 lines
1 KiB
Text
34 lines
1 KiB
Text
[description]
|
|
|
|
Construct a chain of three trees, which don't point to anything else.
|
|
|
|
This is hard! The `git mktree` command might be useful.
|
|
|
|
[setup]
|
|
|
|
[setup goal]
|
|
|
|
git mktree
|
|
TREE=$(echo -e "040000 tree 4b825dc642cb6eb9a060e54bf8d69288fbee4904\tdir" | git mktree)
|
|
echo -e "040000 tree $TREE\tdir" | git mktree
|
|
|
|
[win]
|
|
|
|
TREES=$(git cat-file --batch-check='%(objectname) %(objecttype)' --batch-all-objects | grep tree | cut -f1 -d" ")
|
|
|
|
for TREE in $TREES; do
|
|
if [ "$(git cat-file -p $TREE | wc -l)" -eq 1 ]; then
|
|
if [ "$(git cat-file -p $TREE | cut -f1 | grep tree | wc -l)" -eq 1 ]; then
|
|
# So the tree has exactly one child, and it is a tree!
|
|
TREE2=$(git cat-file -p $TREE | cut -f1 | grep tree | cut -f3 -d" ")
|
|
if [ "$(git cat-file -p $TREE2 | wc -l)" -eq 1 ]; then
|
|
if [ "$(git cat-file -p $TREE2 | cut -f1 | grep tree | wc -l)" -eq 1 ]; then
|
|
# Same for its child! \o/
|
|
return 0
|
|
fi
|
|
fi
|
|
fi
|
|
fi
|
|
done
|
|
|
|
return 1
|