Git branches cleaner

branches-cleaner.sh

#!/bin/bash

EXCEPT_BRANCHES=("main")

usage() {
  echo "Usage: $0 --except 'branch1 branch2 ...'"
  exit 1
}

while [[ "$#" -gt 0 ]]; do
  case $1 in
    --except)
      if [ -z "$2" ]; then
        usage
      fi
      IFS=' ' read -r -a EXTRA_EXCEPT <<< "$2"
      EXCEPT_BRANCHES+=("${EXTRA_EXCEPT[@]}")
      shift 2
      ;;
    *)
      usage
      ;;
  esac
done

branches=$(git branch --format="%(refname:short)")

echo "The following branches will be deleted:"

for branch in $branches; do
  delete=true
  
  for except in "${EXCEPT_BRANCHES[@]}"; do
    if [ "$branch" == "$except" ]; then
      delete=false
      break
    fi
  done

  if [ "$delete" == true ]; then
    echo "git branch -D $branch"
  else
    echo "Skipping branch: $branch"
  fi
done

read -p "Do you really want to execute the branch exclusion? (y/n) " confirm
if [[ "$confirm" != "y" ]]; then
  echo "Branch deletion canceled."
  exit 0
fi

for branch in $branches; do
  delete=true
  
  for except in "${EXCEPT_BRANCHES[@]}"; do
    if [ "$branch" == "$except" ]; then
      delete=false
      break
    fi
  done

  if [ "$delete" == true ]; then
    git branch -D "$branch"
  fi
done