Mercurial > nixos
comparison config/dwm/.git/hooks/push-to-checkout.sample @ 0:face7f4d84f7
Initial commit
| author | Yasuri <yasuri@charliesmp.net> |
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| date | Mon, 28 Sep 2026 13:10:19 -0500 |
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| -1:000000000000 | 0:face7f4d84f7 |
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| 1 #!/nix/store/svx59425zxp552p2b8gm11qj5r09b56i-bash-5.3p15/bin/bash | |
| 2 | |
| 3 # An example hook script to update a checked-out tree on a git push. | |
| 4 # | |
| 5 # This hook is invoked by git-receive-pack(1) when it reacts to git | |
| 6 # push and updates reference(s) in its repository, and when the push | |
| 7 # tries to update the branch that is currently checked out and the | |
| 8 # receive.denyCurrentBranch configuration variable is set to | |
| 9 # updateInstead. | |
| 10 # | |
| 11 # By default, such a push is refused if the working tree and the index | |
| 12 # of the remote repository has any difference from the currently | |
| 13 # checked out commit; when both the working tree and the index match | |
| 14 # the current commit, they are updated to match the newly pushed tip | |
| 15 # of the branch. This hook is to be used to override the default | |
| 16 # behaviour; however the code below reimplements the default behaviour | |
| 17 # as a starting point for convenient modification. | |
| 18 # | |
| 19 # The hook receives the commit with which the tip of the current | |
| 20 # branch is going to be updated: | |
| 21 commit=$1 | |
| 22 | |
| 23 # It can exit with a non-zero status to refuse the push (when it does | |
| 24 # so, it must not modify the index or the working tree). | |
| 25 die () { | |
| 26 echo >&2 "$*" | |
| 27 exit 1 | |
| 28 } | |
| 29 | |
| 30 # Or it can make any necessary changes to the working tree and to the | |
| 31 # index to bring them to the desired state when the tip of the current | |
| 32 # branch is updated to the new commit, and exit with a zero status. | |
| 33 # | |
| 34 # For example, the hook can simply run git read-tree -u -m HEAD "$1" | |
| 35 # in order to emulate git fetch that is run in the reverse direction | |
| 36 # with git push, as the two-tree form of git read-tree -u -m is | |
| 37 # essentially the same as git switch or git checkout that switches | |
| 38 # branches while keeping the local changes in the working tree that do | |
| 39 # not interfere with the difference between the branches. | |
| 40 | |
| 41 # The below is a more-or-less exact translation to shell of the C code | |
| 42 # for the default behaviour for git's push-to-checkout hook defined in | |
| 43 # the push_to_deploy() function in builtin/receive-pack.c. | |
| 44 # | |
| 45 # Note that the hook will be executed from the repository directory, | |
| 46 # not from the working tree, so if you want to perform operations on | |
| 47 # the working tree, you will have to adapt your code accordingly, e.g. | |
| 48 # by adding "cd .." or using relative paths. | |
| 49 | |
| 50 if ! git update-index -q --ignore-submodules --refresh | |
| 51 then | |
| 52 die "Up-to-date check failed" | |
| 53 fi | |
| 54 | |
| 55 if ! git diff-files --quiet --ignore-submodules -- | |
| 56 then | |
| 57 die "Working directory has unstaged changes" | |
| 58 fi | |
| 59 | |
| 60 # This is a rough translation of: | |
| 61 # | |
| 62 # head_has_history() ? "HEAD" : EMPTY_TREE_SHA1_HEX | |
| 63 if git cat-file -e HEAD 2>/dev/null | |
| 64 then | |
| 65 head=HEAD | |
| 66 else | |
| 67 head=$(git hash-object -t tree --stdin </dev/null) | |
| 68 fi | |
| 69 | |
| 70 if ! git diff-index --quiet --cached --ignore-submodules $head -- | |
| 71 then | |
| 72 die "Working directory has staged changes" | |
| 73 fi | |
| 74 | |
| 75 if ! git read-tree -u -m "$commit" | |
| 76 then | |
| 77 die "Could not update working tree to new HEAD" | |
| 78 fi |