blob: 70d67eaf9a1a96f50828468d521f3bc0e41b5ce2 [file] [log] [blame]
#!/bin/sh
# From Gerrit Code Review 3.1.3
#
# 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.
# 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
# Do not create a change id if requested
if test "false" = "`git config --bool --get gerrit.createChangeId`" ; then
exit 0
fi
# $RANDOM will be undefined if not using bash, so don't use set -u
random=$( (whoami ; hostname ; date; cat $1 ; echo $RANDOM) | git hash-object --stdin)
dest="$1.tmp.${random}"
trap 'rm -f "${dest}"' EXIT
if ! git stripspace --strip-comments < "$1" > "${dest}" ; then
echo "cannot strip comments from $1"
exit 1
fi
if test ! -s "${dest}" ; then
echo "file is empty: $1"
exit 1
fi
# Avoid the --in-place option which only appeared in Git 2.8
# Avoid the --if-exists option which only appeared in Git 2.15
if ! git -c trailer.ifexists=doNothing interpret-trailers \
--trailer "Change-Id: I${random}" < "$1" > "${dest}" ; then
echo "cannot insert change-id line in $1"
exit 1
fi
if ! mv "${dest}" "$1" ; then
echo "cannot mv ${dest} to $1"
exit 1
fi