79 lines
2.7 KiB
Plaintext
79 lines
2.7 KiB
Plaintext
|
#!/bin/sh
|
||
|
|
|
||
|
|
# An example hook script to update a checked-out tree on a git push.
|
||
|
|
#
|
||
|
|
# This hook is invoked by git-receive-pack(1) when it reacts to git
|
||
|
|
# push and updates reference(s) in its repository, and when the push
|
||
|
|
# tries to update the branch that is currently checked out and the
|
||
|
|
# receive.denyCurrentBranch configuration variable is set to
|
||
|
|
# updateInstead.
|
||
|
|
#
|
||
|
|
# By default, such a push is refused if the working tree and the index
|
||
|
|
# of the remote repository has any difference from the currently
|
||
|
|
# checked out commit; when both the working tree and the index match
|
||
|
|
# the current commit, they are updated to match the newly pushed tip
|
||
|
|
# of the branch. This hook is to be used to override the default
|
||
|
|
# behaviour; however the code below reimplements the default behaviour
|
||
|
|
# as a starting point for convenient modification.
|
||
|
|
#
|
||
|
|
# The hook receives the commit with which the tip of the current
|
||
|
|
# branch is going to be updated:
|
||
|
|
commit=$1
|
||
|
|
|
||
|
|
# It can exit with a non-zero status to refuse the push (when it does
|
||
|
|
# so, it must not modify the index or the working tree).
|
||
|
|
die () {
|
||
|
|
echo >&2 "$*"
|
||
|
|
exit 1
|
||
|
|
}
|
||
|
|
|
||
|
|
# Or it can make any necessary changes to the working tree and to the
|
||
|
|
# index to bring them to the desired state when the tip of the current
|
||
|
|
# branch is updated to the new commit, and exit with a zero status.
|
||
|
|
#
|
||
|
|
# For example, the hook can simply run git read-tree -u -m HEAD "$1"
|
||
|
|
# in order to emulate git fetch that is run in the reverse direction
|
||
|
|
# with git push, as the two-tree form of git read-tree -u -m is
|
||
|
|
# essentially the same as git switch or git checkout that switches
|
||
|
|
# branches while keeping the local changes in the working tree that do
|
||
|
|
# not interfere with the difference between the branches.
|
||
|
|
|
||
|
|
# The below is a more-or-less exact translation to shell of the C code
|
||
|
|
# for the default behaviour for git's push-to-checkout hook defined in
|
||
|
|
# the push_to_deploy() function in builtin/receive-pack.c.
|
||
|
|
#
|
||
|
|
# Note that the hook will be executed from the repository directory,
|
||
|
|
# not from the working tree, so if you want to perform operations on
|
||
|
|
# the working tree, you will have to adapt your code accordingly, e.g.
|
||
|
|
# by adding "cd .." or using relative paths.
|
||
|
|
|
||
|
|
if ! git update-index -q --ignore-submodules --refresh
|
||
|
|
then
|
||
|
|
die "Up-to-date check failed"
|
||
|
|
fi
|
||
|
|
|
||
|
|
if ! git diff-files --quiet --ignore-submodules --
|
||
|
|
then
|
||
|
|
die "Working directory has unstaged changes"
|
||
|
|
fi
|
||
|
|
|
||
|
|
# This is a rough translation of:
|
||
|
|
#
|
||
|
|
# head_has_history() ? "HEAD" : EMPTY_TREE_SHA1_HEX
|
||
|
|
if git cat-file -e HEAD 2>/dev/null
|
||
|
|
then
|
||
|
|
head=HEAD
|
||
|
|
else
|
||
|
|
head=$(git hash-object -t tree --stdin </dev/null)
|
||
|
|
fi
|
||
|
|
|
||
|
|
if ! git diff-index --quiet --cached --ignore-submodules $head --
|
||
|
|
then
|
||
|
|
die "Working directory has staged changes"
|
||
|
|
fi
|
||
|
|
|
||
|
|
if ! git read-tree -u -m "$commit"
|
||
|
|
then
|
||
|
|
die "Could not update working tree to new HEAD"
|
||
|
|
fi
|