gb-grep

#!/bin/bash
#
# Copyright 2013 Jarek Jarcec Cecho <jarcec@apache.org>
#
# 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.
#

# Usage: gb-grep <regexp>
#
# Search all git branches (and tags) for commit messages that satisfies given regular
# expression. Only first line of each commit message is used. Branches and tags with
# successful hit will be printed out, for example:
#
# gp-grep SQOOP-567
# remotes/origin/branch-1.99.1: 12e049b4ec009f0a5536e122a540add7e9adc694 SQOOP-567 Support connection ...
# remotes/origin/branch-1.99.2: 12e049b4ec009f0a5536e122a540add7e9adc694 SQOOP-567 Support connection ...
# ...
# 
# This tool is useful to find out on what branches/tags (releases) is given JIRA available.

# Parameters
regexp=$1

if [[ -z $regexp ]] ; then 
  echo "Missing regexp parameter."
  exit 1
fi

echo "Searching for $regexp"

# Go over given tag/commit and find out if given commit is present there
function searchForCommit() {
  entity=$1
  prefix=$2

  # See if the first lines of the commits matches the searched regexp
  output=`git log --pretty=oneline $entity | grep "$regexp"`

  # If so, print it out with the branch name
  if [[ -n $output ]]; then
    echo $prefix: $entity: $output
  fi
}

# Get git branches, remove pointers if any (for example HEAD -> something)
for branch in `git branch -a | sed -e "s/^\(.*\)->.*$/\1/"`; do
  searchForCommit $branch "Branch"
done
# Iterate over tags
for tag in `git tag`; do
  searchForCommit $tag "Tag"
done