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#!/bin/sh
# An example hook script to validate a patch (and/or patch series) before
# sending it via email.
#
# The hook should exit with non-zero status after issuing an appropriate
# message if it wants to prevent the email(s) from being sent.
#
# To enable this hook, rename this file to "sendemail-validate".
#
# By default, it will only check that the patch(es) can be applied on top of
# the default upstream branch without conflicts in a secondary worktree. After
# validation (successful or not) of the last patch of a series, the worktree
# will be deleted.
#
# The following config variables can be set to change the default remote and
# remote ref that are used to apply the patches against:
#
# sendemail.validateRemote (default: origin)
# sendemail.validateRemoteRef (default: HEAD)
validate_cover_letter () {
file="$1"
true
}
validate_patch () {
file="$1"
# Ensure that the patch applies without conflicts.
git am -3 "$file" || return
# Sign the patch if patatt is available.
case "$(git config --default false --get sendemail.runPatatt)" in
TRUE|True|true|yes|YES|Yes|Y|y|on|ON|On|1)
command -v patatt >/dev/null 2>&1 || return
patatt sign --hook "$file" || return 1
;;
esac
}
validate_series () {
command -v gmake >/dev/null 2>&1 && make="gmake" || make="make"
$make validate
}
# fallback for git 2.40 and older
: ${GIT_SENDEMAIL_FILE_COUNTER:=1}
: ${GIT_SENDEMAIL_FILE_TOTAL:=1}
if test "$GIT_SENDEMAIL_FILE_COUNTER" = 1
then
remote=$(git config --default origin --get sendemail.validateRemote) &&
ref=$(git config --default master --get sendemail.validateRemoteRef) &&
worktree=$(mktemp -d -t sendemail-validate.XXXXXXX) &&
git worktree add -fd --checkout "$worktree" "refs/remotes/$remote/$ref" &&
git config --replace-all sendemail.validateWorktree "$worktree"
else
worktree=$(git config --get sendemail.validateWorktree)
fi || {
echo "sendemail-validate: error: failed to prepare worktree" >&2
exit 1
}
unset GIT_DIR GIT_WORK_TREE
cd "$worktree" &&
if grep -q "^diff --git " "$1"
then
validate_patch "$1"
else
validate_cover_letter "$1"
fi &&
if test "$GIT_SENDEMAIL_FILE_COUNTER" = "$GIT_SENDEMAIL_FILE_TOTAL"
then
git config --unset-all sendemail.validateWorktree &&
trap 'git worktree remove -ff "$worktree"' EXIT &&
validate_series
fi
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