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#!/bin/sh
usage() {
echo "git-precheck [--quiet] [--ignore-dirty] [--ignore-untracked]"
echo ""
echo "If the current working directory is inside a git repository, examine"
echo "the repo for any abnormal state and return an exit code indicating"
echo "the status. If unclean, print a line of text describing the"
echo "condition."
echo ""
echo " --quiet"
echo " Don't actually print anything."
echo ""
echo " --ignore-dirty"
echo " Don't consider the presence of uncommitted changes to tracked"
echo " files as an abnormal state."
echo ""
echo " --ignore-untracked"
echo " Don't consider the presence of untracked files as an abnormal"
echo " state."
echo ""
echo " Exit codes:"
echo " 0 If inside a repository and all checks return normal"
echo " 1 If untracked files detected"
echo " 2 If dirty/modified files detected"
echo " 3 If any ongoing git operation is in progress"
echo " 4 If not inside a git repository"
echo ""
echo " Exit any other value on error or if 'precheck' operation is"
echo " not completed, such as when viewing this help text."
exit 128
}
quiet=""
ignore_dirty=""
ignore_untracked=""
while true; do
case "$1" in
--quiet) quiet="true" ;;
--ignore-dirty) ignore_dirty="true" ;;
--ignore-untracked) ignore_untracked="true" ;;
--help) usage ;;
-h) usage ;;
*) break
esac
shift
done
if [ $# -ne 0 ]; then
printf 'precheck: Unrecognized option given: %s\n' "$1"
exit 128
fi
check() {
if git rev-parse --verify "$1" >/dev/null 2>&1; then
[ -z "$quiet" ] && printf '\e[0;31m%s in progress\e[0m\n' "$2"
exit 3
fi
}
if ! [ "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = "true" ]; then
[ -z "$quiet" ] && printf '\e[0;31mNot inside a git work tree\e[0m\n'
exit 4
fi
check MERGE_HEAD Merge
check REBASE_HEAD Rebase
check REVERT_HEAD Revert
check CHERRY_PICK_HEAD Cherry-pick
check BISECT_EXPECTED_REV Bisect
if [ -e "$(git rev-parse --git-path rebase-apply 2>/dev/null)" ]; then
[ -z "$quiet" ] && printf '\e[0;31mrebase-apply (am) found\e[0m\n'
exit 3
fi
if [ -z "$ignore_dirty" ]; then
if git status --porcelain 2>/dev/null \
| grep --quiet --invert-match '^??'; then
[ -z "$quiet" ] && printf '\e[0;31mModified files detected\e[0m\n'
exit 2
fi
fi
if [ -z "$ignore_untracked" ]; then
if git status --porcelain 2>/dev/null \
| grep --quiet '^??'; then
[ -z "$quiet" ] && printf '\e[0;31mUntracked files detected\e[0m\n'
exit 1
fi
fi
exit 0
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