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#!/bin/sh
USAGE="(edit [-F <file> | -m <msg>] | show) [commit]"
. git-sh-setup
test -z "$1" && usage
ACTION="$1"; shift
test -z "$GIT_NOTES_REF" && GIT_NOTES_REF="$(git config core.notesref)"
test -z "$GIT_NOTES_REF" && GIT_NOTES_REF="refs/notes/commits"
MESSAGE=
while test $# != 0
do
case "$1" in
-m)
test "$ACTION" = "edit" || usage
shift
if test "$#" = "0"; then
die "error: option -m needs an argument"
else
if [ -z "$MESSAGE" ]; then
MESSAGE="$1"
else
MESSAGE="$MESSAGE
$1"
fi
shift
fi
;;
-F)
test "$ACTION" = "edit" || usage
shift
if test "$#" = "0"; then
die "error: option -F needs an argument"
else
if [ -z "$MESSAGE" ]; then
MESSAGE="$(cat "$1")"
else
MESSAGE="$MESSAGE
$(cat "$1")"
fi
shift
fi
;;
-*)
usage
;;
*)
break
;;
esac
done
COMMIT=$(git rev-parse --verify --default HEAD "$@") ||
die "Invalid commit: $@"
case "$ACTION" in
edit)
if [ "${GIT_NOTES_REF#refs/notes/}" = "$GIT_NOTES_REF" ]; then
die "Refusing to edit notes in $GIT_NOTES_REF (outside of refs/notes/)"
fi
MSG_FILE="$GIT_DIR/new-notes-$COMMIT"
GIT_INDEX_FILE="$MSG_FILE.idx"
export GIT_INDEX_FILE
trap '
test -f "$MSG_FILE" && rm "$MSG_FILE"
test -f "$GIT_INDEX_FILE" && rm "$GIT_INDEX_FILE"
' 0
CURRENT_HEAD=$(git show-ref "$GIT_NOTES_REF" | cut -f 1 -d ' ')
if [ -z "$CURRENT_HEAD" ]; then
PARENT=
else
PARENT="-p $CURRENT_HEAD"
git read-tree "$GIT_NOTES_REF" || die "Could not read index"
fi
if [ -z "$MESSAGE" ]; then
GIT_NOTES_REF= git log -1 $COMMIT | sed "s/^/#/" > "$MSG_FILE"
if [ ! -z "$CURRENT_HEAD" ]; then
git cat-file blob :$COMMIT >> "$MSG_FILE" 2> /dev/null
fi
core_editor="$(git config core.editor)"
${GIT_EDITOR:-${core_editor:-${VISUAL:-${EDITOR:-vi}}}} "$MSG_FILE"
else
echo "$MESSAGE" > "$MSG_FILE"
fi
grep -v ^# < "$MSG_FILE" | git stripspace > "$MSG_FILE".processed
mv "$MSG_FILE".processed "$MSG_FILE"
if [ -s "$MSG_FILE" ]; then
BLOB=$(git hash-object -w "$MSG_FILE") ||
die "Could not write into object database"
git update-index --add --cacheinfo 0644 $BLOB $COMMIT ||
die "Could not write index"
else
test -z "$CURRENT_HEAD" &&
die "Will not initialise with empty tree"
git update-index --force-remove $COMMIT ||
die "Could not update index"
fi
TREE=$(git write-tree) || die "Could not write tree"
NEW_HEAD=$(echo Annotate $COMMIT | git commit-tree $TREE $PARENT) ||
die "Could not annotate"
git update-ref -m "Annotate $COMMIT" \
"$GIT_NOTES_REF" $NEW_HEAD $CURRENT_HEAD
;;
show)
git rev-parse -q --verify "$GIT_NOTES_REF":$COMMIT > /dev/null ||
die "No note for commit $COMMIT."
git show "$GIT_NOTES_REF":$COMMIT
;;
*)
usage
esac