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https://github.com/git-learning-game/oh-my-git.git
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38 lines
1.3 KiB
Text
38 lines
1.3 KiB
Text
[description]
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Trees can also point to other trees! This way, they can describe nested directory structures.
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When you add a file inside of a directory to the index, and then call `git write-tree`, it will create a nested tree for the directory, and attach the blob to it.
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To solve this level, build a little stick figure, as shown on the left - a tree that points to two blobs, as well to a tree that points to two blobs.
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[setup]
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[setup goal]
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echo "I'm the left arm" > arm1
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echo "I'm the right arm" > arm2
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mkdir hip
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echo "I'm the left leg" > hip/leg1
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echo "I'm the right leg" > hip/leg2
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git add .
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git write-tree
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[win]
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TREES=$(git cat-file --batch-check='%(objectname) %(objecttype)' --batch-all-objects | grep tree | cut -f1 -d" ")
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for OUTER_TREE in $TREES; do
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NUMBER_OF_BLOB_CHILDREN=$(git cat-file -p $OUTER_TREE | cut -f2 -d" " | grep blob | wc -l)
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NUMBER_OF_TREE_CHILDREN=$(git cat-file -p $OUTER_TREE | cut -f2 -d" " | grep tree | wc -l)
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if [ $NUMBER_OF_BLOB_CHILDREN -eq 2 -a $NUMBER_OF_TREE_CHILDREN -eq 1 ]; then
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TREE_CHILD=$(git cat-file -p $OUTER_TREE | cut -f1 | grep tree | cut -d" " -f3)
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NUMBER_OF_BLOB_CHILDREN_OF_TREE_CHILD=$(git cat-file -p $TREE_CHILD | cut -f2 -d" " | grep blob | wc -l)
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if [ $NUMBER_OF_BLOB_CHILDREN_OF_TREE_CHILD -eq 2 ]; then
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return 0
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fi
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fi
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done
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return 1
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