clean-branches.sh

#!/bin/bash
## /*
#	@usage clean-branches [--base=<branch-name>]
#
#	@description
#	This script iterates through your local branches and prompts you to delete
#	branches that are fully merged into master.
#	description@
#
#	@options
#	--base=<branch-name>    By default, the base branch for merged branches is
#	                        master. It can be changed using this option.
#	options@
#
#	@notes
#	- You will end on the same branch you started out on.
#	- To see which branches are already merged into the branch you’re on, you
#	  can run git branch --merged.
#	- To see all the branches that contain work you haven’t yet merged in, you
#	  can run git branch --no-merged.
#	notes@
#
#	@dependencies
#	*delete.sh
#	functions/5000.parse_git_branch.sh
#	dependencies@
#
#	@file clean-branches.sh
## */
$loadfuncs


# parse args
if [ $# -lt 3 ]; then
	until [ -z "$1" ]; do
		grep -q '^--base=' <<< "$1" && target="${1:7}"
		shift 1
	done
else
	__bad_usage clean-branches "Invalid number of parameters."
	exit 1
fi
[ -z "$target" ] && target="master"

# to show current branch in output
cb=$(__parse_git_branch)


# start it up
echo ${X}
echo ${H1}${H1HL}
echo "  Clean-Branches will iterate through your local branches and prompt you to  "
echo "  delete branches that have already been merged into ${H1B}\`${target}\`${H1}.  "
echo ${H1HL}${X}
echo
echo

# get target branch hash for display/comparison purposes
targetHash=$(git show --oneline "$target")
targetHash="${targetHash:0:7}"
echo "${B}\`${target}\`${X} hash: ${STYLE_BRIGHT}${COL_MAGENTA}${targetHash}"${X}
echo

# send branch data to temp file
tmp="${gitscripts_temp_path}vbranch"
git branch -v | awk '{gsub(/^\* /, "");print;}' > $tmp

# run loop. reads from temp file.
declare -a branchNames
declare -a branchHashes
while read branch; do
	pieces=( $branch )
	if git branch --contains "${pieces[1]}" | egrep -q "${target}"; then

		[ "$targetHash" = "${pieces[1]}" ] && {
			op="${STYLE_BRIGHT}==="
			bHash="${STYLE_BRIGHT}${pieces[1]}"
		} || {
			op="\\__"
			bHash="${pieces[1]}"
		}

		[ "${pieces[0]}" = "$cb" ] && star="*" || star=" "

		branchNames[${#branchNames[@]}]="${pieces[0]}"
		branchHashes[${#branchHashes[@]}]="${pieces[1]}"
		echo "${STYLE_BRIGHT}${COL_MAGENTA}${targetHash}${X} ${COL_YELLOW}${op}${X} ${COL_MAGENTA}${bHash}${X} ::${B}${star}${pieces[0]}"${X}
	fi
done <"$tmp"

# temp file no longer necessary
rm "$tmp"

echo
echo ${Q}"Would you like to begin deleting branches? y (n)"${X}
read yn
echo
if [ "$yn" != "y" ] && [ "$yn" != "Y" ]; then
	echo "  Exiting..."
	exit 0
fi

# let's get this party started...
for (( i = 0; i < ${#branchNames[@]}; i++ )); do
	"${gitscripts_path}"delete.sh "${branchNames[$i]}"
done

exit