hbase/dev-support/make_patch.sh

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#!/bin/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.
# */
# Make a patch for the current branch based on its tracking branch
patch_version=''
# Process args
while getopts "ahtd:b:" opt; do
case "${opt}" in
a) addendum='-addendum'
;;
d)
patch_dir=$OPTARG
;;
b)
tracking_branch=$OPTARG
;;
t)
patch_version=".$(date -u +%Y%m%d-%H%M%S)"
;;
*)
echo -e "Usage: $0 [-h] [-a] [-t] [-d] <directory> \n\
Must be run from within the git branch to make the patch against.\n\
-h - display these instructions.\n\
-a - Add an 'addendum' prefix to the patch name.\n\
-t - Use the current timestamp as the version indicator.\n\
-b - Specify the base branch to diff from. (defaults to the tracking branch or origin master)\n\
-d - specify a patch directory (defaults to ~/patches/)"
exit 0
;;
esac
done
# Find what branch we are on
branch=$(git branch | grep '^\*' | cut -d' ' -f2- )
if [ ! "${branch}" ]; then
echo "Can't determine the git branch. Exiting." >&2
exit 1
fi
# Exit if git status is dirty
git_dirty=$(git diff --shortstat 2> /dev/null | wc -l)
echo "git_dirty is ${git_dirty}"
if [ "${git_dirty}" -ne 0 ]; then
echo "Git status is dirty. Commit locally first.">&2
exit 1
fi
# Determine the tracking branch if needed.
# If it was passed in from the command line
# with -b then use dthat no matter what.
if [ ! "${tracking_branch}" ]; then
git log -n 1 "origin/${branch}" > /dev/null 2>&1
status=$?
if [ "${status}" -eq 128 ]; then
# Status 128 means there is no remote branch
tracking_branch='origin/master'
elif [ "${status}" -eq 0 ]; then
# Status 0 means there is a remote branch
tracking_branch="origin/${branch}"
else
echo "Unknown error: $?" >&2
exit 1
fi
fi
# Deal with invalid or missing ${patch_dir}
if [ ! "${patch_dir}" ]; then
echo -e "Patch directory not specified. Falling back to ~/patches/."
patch_dir=~/patches
fi
if [ ! -d "${patch_dir}" ]; then
echo "${patch_dir} does not exist. Creating it."
mkdir "${patch_dir}"
fi
# If this is against a tracking branch other than master
# include it in the patch name
tracking_suffix=""
if [[ "${tracking_branch}" != "origin/master" \
&& "${tracking_branch}" != "master" ]]; then
tracking_suffix=".${tracking_branch#origin/}"
fi
# Determine what to call the patch
if [[ "${patch_version}" == "" ]]; then
# If we do NOT have the timestamp we must find the version to use
version=0
# Check to see if any patch exists that includes the branch name
status=$(find "${patch_dir}" -maxdepth 1 -type f -name "${branch}${tracking_suffix}.v[0-9][0-9].patch" 2>/dev/null|grep -c -v addendum)
if [[ "${status}" -eq 0 ]]; then
# This is the first patch we are making for this release
version=1
elif [[ "${status}" -ge 1 ]]; then
# At least one patch already exists -- find the last one
for i in {99..1}; do
# Check to see the maximum version of patch that exists
versionfiles=$(find "${patch_dir}" -maxdepth 1 -type f -name "${branch}${tracking_suffix}.v$(printf "%02d" "$i").patch" 2> /dev/null | wc -l)
if [ 0 -lt "${versionfiles}" ]; then
version=$((i+1))
break
fi
done
fi
if [ -n "${addendum}" ]; then
# Don't increment the patch # if it is an addendum
echo "Creating an addendum"
if [ "${version}" -ge 1 ]; then
# We are making an addendum to a different version of the patch
version=$((version-1))
fi
fi
patch_version=".v$(printf "%02d" "${version}")"
fi
patch_name="${branch}${tracking_suffix}${patch_version}${addendum}.patch"
# Do we need to make a diff?
git diff --quiet "${tracking_branch}"
status=$?
if [ "${status}" -eq 0 ]; then
echo "There is no difference between ${branch} and ${tracking_branch}."
echo "No patch created."
exit 0
fi
# Check whether we need to squash or not
local_commits=$(git log "${tracking_branch}..${branch}" | grep -c 'Author:')
if [ "$local_commits" -gt 1 ]; then
read -p "$local_commits commits exist only in your local branch. Interactive rebase?" yn
case $yn in
[Yy]* )
git rebase -i "${tracking_branch}"
;;
[Nn]* )
echo "Creating ${patch_dir}/${patch_name} using git diff."
git diff "${tracking_branch}" > "${patch_dir}/${patch_name}"
exit 0
;;
esac
fi
echo "Creating patch ${patch_dir}/${patch_name} using git format-patch"
git format-patch --no-prefix --stdout "${tracking_branch}" > "${patch_dir}/${patch_name}"