| #!/bin/sh |
| # |
| # Part of Gerrit Code Review (https://www.gerritcodereview.com/) |
| # |
| # Copyright (C) 2009 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| set -u |
| |
| # avoid [[ which is not POSIX sh. |
| if test "$#" != 1 ; then |
| echo "$0 requires an argument." |
| exit 1 |
| fi |
| |
| if test ! -f "$1" ; then |
| echo "file does not exist: $1" |
| exit 1 |
| fi |
| |
| if test ! -s "$1" ; then |
| echo "file is empty: $1" |
| exit 1 |
| fi |
| |
| if git rev-parse --verify HEAD >/dev/null 2>&1; then |
| refhash="$(git rev-parse HEAD)" |
| else |
| refhash="$(git hash-object -t tree /dev/null)" |
| fi |
| |
| random=$({ git var "GIT_COMMITTER_IDENT" ; echo "$refhash" ; cat "$1"; } | git hash-object --stdin) |
| dest="$1.tmp.${random}" |
| |
| # Avoid the --in-place option which only appeared in Git 2.8 |
| # Avoid the --if-exists option which only appeared in Git 2.15 |
| cat "$1" \ |
| | git -c trailer.ifexists=doNothing interpret-trailers --trailer "Change-Id: I${random}" > "${dest}" \ |
| && mv "${dest}" "$1" |
