mirror of
https://github.com/NinjaTrappeur/my-repo-pins.git
synced 2024-06-02 03:24:09 +02:00
Félix Baylac-Jacqué
a768efebba
git clone is creating a destination empty directory before even attempting to clone the remote URL. It means that if the user-supplied remote URL happen to be invalid, an empty directory is getting created at dest, preventing us to try cloning the same repository once again. We fixed that issue by checking whether the remote git repository exists using git ls-remote **before** calling git clone. git ls-remote will fail on a git repository not containing any git commit. We add a function to the test bed creating a git repo with one commit. It's a bit hacky, but that's the best setup I could come with. We embed a dummy git repo to the my-repo-pins codebase and copy it during the test phase to a tmp workspace.
79 lines
2.8 KiB
Bash
Executable file
79 lines
2.8 KiB
Bash
Executable file
#!/nix/store/y0g1mvsr6vygr61f9znljik9kl0x0inc-bash-5.1-p16/bin/bash
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# An example hook script to update a checked-out tree on a git push.
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#
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# This hook is invoked by git-receive-pack(1) when it reacts to git
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# push and updates reference(s) in its repository, and when the push
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# tries to update the branch that is currently checked out and the
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# receive.denyCurrentBranch configuration variable is set to
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# updateInstead.
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#
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# By default, such a push is refused if the working tree and the index
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# of the remote repository has any difference from the currently
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# checked out commit; when both the working tree and the index match
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# the current commit, they are updated to match the newly pushed tip
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# of the branch. This hook is to be used to override the default
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# behaviour; however the code below reimplements the default behaviour
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# as a starting point for convenient modification.
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#
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# The hook receives the commit with which the tip of the current
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# branch is going to be updated:
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commit=$1
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# It can exit with a non-zero status to refuse the push (when it does
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# so, it must not modify the index or the working tree).
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die () {
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echo >&2 "$*"
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exit 1
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}
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# Or it can make any necessary changes to the working tree and to the
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# index to bring them to the desired state when the tip of the current
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# branch is updated to the new commit, and exit with a zero status.
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#
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# For example, the hook can simply run git read-tree -u -m HEAD "$1"
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# in order to emulate git fetch that is run in the reverse direction
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# with git push, as the two-tree form of git read-tree -u -m is
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# essentially the same as git switch or git checkout that switches
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# branches while keeping the local changes in the working tree that do
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# not interfere with the difference between the branches.
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# The below is a more-or-less exact translation to shell of the C code
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# for the default behaviour for git's push-to-checkout hook defined in
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# the push_to_deploy() function in builtin/receive-pack.c.
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#
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# Note that the hook will be executed from the repository directory,
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# not from the working tree, so if you want to perform operations on
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# the working tree, you will have to adapt your code accordingly, e.g.
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# by adding "cd .." or using relative paths.
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if ! git update-index -q --ignore-submodules --refresh
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then
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die "Up-to-date check failed"
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fi
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if ! git diff-files --quiet --ignore-submodules --
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then
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die "Working directory has unstaged changes"
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fi
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# This is a rough translation of:
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#
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# head_has_history() ? "HEAD" : EMPTY_TREE_SHA1_HEX
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if git cat-file -e HEAD 2>/dev/null
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then
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head=HEAD
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else
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head=$(git hash-object -t tree --stdin </dev/null)
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fi
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if ! git diff-index --quiet --cached --ignore-submodules $head --
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then
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die "Working directory has staged changes"
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fi
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if ! git read-tree -u -m "$commit"
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then
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die "Could not update working tree to new HEAD"
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fi
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