hbase/dev-support/smart-apply-patch.sh

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#!/usr/bin/env bash
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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 -e
PATCH_FILE=$1
if [ -z "$PATCH_FILE" ]; then
echo usage: $0 patch-file
exit 1
fi
PATCH=${PATCH:-patch} # allow overriding patch binary
# Cleanup handler for temporary files
TOCLEAN=""
cleanup() {
rm $TOCLEAN
exit $1
}
trap "cleanup 1" HUP INT QUIT TERM
# Allow passing "-" for stdin patches
if [ "$PATCH_FILE" == "-" ]; then
PATCH_FILE=/tmp/tmp.in.$$
cat /dev/fd/0 > $PATCH_FILE
TOCLEAN="$TOCLEAN $PATCH_FILE"
fi
# Come up with a list of changed files into $TMP
TMP=/tmp/tmp.paths.$$
TOCLEAN="$TOCLEAN $TMP"
if $PATCH -p0 -E --dry-run < $PATCH_FILE 2>&1 > $TMP; then
PLEVEL=0
#if the patch applied at P0 there is the possability that all we are doing
# is adding new files and they would apply anywhere. So try to guess the
# correct place to put those files.
# NOTE 2014/07/17:
# Temporarily disabling below check since our jenkins boxes seems to be not defaulting to bash
# causing below checks to fail. Once it is fixed, we can revert the commit and enable this again.
# TMP2=/tmp/tmp.paths.2.$$
# TOCLEAN="$TOCLEAN $TMP2"
#
# grep '^patching file ' $TMP | awk '{print $3}' | grep -v /dev/null | sort | uniq > $TMP2
#
# #first off check that all of the files do not exist
# FOUND_ANY=0
# for CHECK_FILE in $(cat $TMP2)
# do
# if [[ -f $CHECK_FILE ]]; then
# FOUND_ANY=1
# fi
# done
#
# if [[ "$FOUND_ANY" = "0" ]]; then
# #all of the files are new files so we have to guess where the correct place to put it is.
#
# # if all of the lines start with a/ or b/, then this is a git patch that
# # was generated without --no-prefix
# if ! grep -qv '^a/\|^b/' $TMP2 ; then
# echo Looks like this is a git patch. Stripping a/ and b/ prefixes
# echo and incrementing PLEVEL
# PLEVEL=$[$PLEVEL + 1]
# sed -i -e 's,^[ab]/,,' $TMP2
# fi
# fi
elif $PATCH -p1 -E --dry-run < $PATCH_FILE 2>&1 > /dev/null; then
PLEVEL=1
elif $PATCH -p2 -E --dry-run < $PATCH_FILE 2>&1 > /dev/null; then
PLEVEL=2
else
echo "The patch does not appear to apply with p0 to p2";
cleanup 1;
fi
echo Going to apply patch with: $PATCH -p$PLEVEL
$PATCH -p$PLEVEL -E < $PATCH_FILE
cleanup $?