Carthage's bcsymbolmap cleanup script

cleanup_bcsymbolmap

#!/bin/bash

function print_usage() {
  echo "Usage: $0 [Options]"
  echo "Options:"
  echo "    -h, --help                Display usage"
  echo "    -p, --project-directory   Directory containing Carthage project"
  echo "    -f, --force               Omit confirmation"
  exit 1
}

function list_expected_bcsymbolmap() {
  framework_binaries=`find ${PROJECT_DIRECTORY}/Carthage/Build/**/*.framework -type f -perm -111`

  for module in $framework_binaries; do
    if [[ ${module} =~ ^${PROJECT_DIRECTORY}/Carthage/Build/.+/(.+)\.framework/.+$ ]]; then
      module_name=${BASH_REMATCH[1]}
    fi
    xcrun dwarfdump --uuid $module | awk -v m="$module_name" '{print m "," $2".bcsymbolmap"}'
  done
}

function list_existing_bcsymbolmap() {
  find ${PROJECT_DIRECTORY}/Carthage/Build/**/*.bcsymbolmap
}

function absolute_or_current_path() {
  if [[ -d "$1" ]]; then
    pushd "$1" > /dev/null 2>&1
    pwd
    popd > /dev/null 2>&1
  else
    echo $(pwd)
  fi
}

function cleanup_unused_bcsymbolmap() {
  if [ ! -d ${PROJECT_DIRECTORY}/Carthage/Build ]; then
    echo "Carthage build directory is not found: '${PROJECT_DIRECTORY}/Carthage/Build'"
    exit 1
  fi

  existing=`list_existing_bcsymbolmap`
  expected=`list_expected_bcsymbolmap`
  keeps=()
  deletes=()

  for existing_bcsymbolmap in $existing; do
    found_module_name=""
    for expected_bcsymbolmap in $expected; do
      sep=(`echo $expected_bcsymbolmap | tr -s ',', ' '`)
      module_name=${sep[0]}
      bcsymbolmap=${sep[1]}
      if [[ "$existing_bcsymbolmap" == *"$bcsymbolmap" ]]; then
        found_module_name=$module_name
        break
      fi
    done

    printf "."

    if [ -z "$found_module_name" ]; then
      removes+=("$existing_bcsymbolmap")
    else
      keeps+=("${found_module_name},${existing_bcsymbolmap}")
    fi
  done

  echo ""
  echo ""
  echo "Keeps:"
  for keep in ${keeps[@]}; do
    sep=(`echo $keep | tr -s ',', ' '`)
    module_name=${sep[0]}
    bcsymbolmap=${sep[1]}
    echo "$bcsymbolmap used in $module_name"
  done

  if [ ${#removes[@]} -eq 0 ]; then
    echo ""
    echo "No remove files."
    exit 0
  fi

  echo ""
  echo "Removes:"
  for remove in ${removes[@]}; do
    echo "$remove"
  done

  if [ "$FORCE" == "false" ]; then
    echo ""
    read -p "Are you sure to remove? (y/n): " confirm

    if [ "${confirm}" != "y" ]; then
      exit 1
    fi
  fi

  for remove in ${removes[@]}; do
    rm $remove
    echo "Removed: $remove"
  done
}


for arg in "$@"; do
  shift
  case "$arg" in
    "--help")               set -- "$@" "-h" ;;
    "--project-directory")  set -- "$@" "-p" ;;
    "--force")              set -- "$@" "-f" ;;
    *)                      set -- "$@" "$arg"
  esac
done

FORCE=false
PROJECT_DIRECTORY=$(pwd)

OPTIND=1
while getopts "hp:f" opt
do
  case "$opt" in
    "h") print_usage ;;
    "p") PROJECT_DIRECTORY=`absolute_or_current_path "$OPTARG"` ;;
    "f") FORCE=true ;;
  esac
done
shift $(expr $OPTIND - 1)

cleanup_unused_bcsymbolmap