git_local_cleanup.sh

#!/bin/bash

# Go through all the branches except the current active, asking whether it should
# be preserved or removed. Delete all marked for removal in the second iteration.

branches=()
while IFS= read -rs line ; do
	branches+=("${line:2}")
done < <(git branch)

i=0
toDelete=()
tput sc
while [ $i -lt ${#branches[@]} ] ; do
	tput rc; tput el

	if [ $i -gt 0 ] ; then
		choices="(y[es]/n[o]/e[xit]/b[ack])"
	else
		choices="(y[es]/n[o]/e[xit])"
	fi

	branch=${branches[$i]} 
	printf "Delete %s %s? " "$branch" "$choices"
	while read -r -n1 ans ; do
		if [[ $ans == 'y' || $ans == 'n' || $ans == 'e' || $ans == 'b' && $i -gt 0 ]] ; then
			break
		fi
	done

	if [ "$ans" == 'e' ] ; then
		echo ""
		exit 1
	fi
	

	if [ "$ans" == 'y' ] ; then
		toDelete+=("$branch")
		step=1
	elif [ "$ans" == 'b' ] ; then
		toDelete=("${toDelete[@]/$branch}")
		step=-1
	else
		toDelete=("${toDelete[@]/$branch}")
		step=1
	fi


	((i+=step))
done

tput rc; tput el

for branch in "${toDelete[@]}"; do
	git branch -D "$branch"
done

echo ""