Bash script for extracting CFBundleIdentifier from .app or .ipa (MacOS only)

bundle-id.sh

#!/usr/bin/env bash

function error {
  echo "$(tput setaf 1)ERROR: $1$(tput sgr0)"
}

function usage {
  echo "Usage: bundle-id.sh /path/to/App.{ipa | app}"
}

function ditto_or_exit {
  ditto "${1}" "${2}"
  if [ "$?" != 0 ]; then
    error "Could not copy:"
    error "  source: ${1}"
    error "  target: ${2}"
    if [ ! -e "${1}" ]; then
      error "The source file does not exist"
    fi
    error "Exiting 1"
    exit 1
  fi
}

if [ -z "${1}" ]; then
  usage
  exit 1
fi

FILE="${1}"

if [ ! -e "${FILE}" ]; then
  error "File ${FILE} does not exist"
fi

ORIGINAL_DIR="${PWD}"

EXT=`echo "${FILE##*.}" | tr -d '\n'`

if [ "${EXT}" = "app" ]; then
  PLIST="${FILE}/Info.plist"
elif [ "${EXT}" = "ipa" ]; then
  TMP_DIR=$(mktemp -d -t 'bundle-id-tmpdir')
  ditto_or_exit "${FILE}" "${TMP_DIR}"

  cd "${TMP_DIR}"
  IPA=`basename ${FILE} | tr -d '\n'`
  unzip -q "${IPA}"
  PLIST=`find ./Payload -maxdepth 2 -type f -name Info.plist -print0`
else
  error "Expected a .app or .ipa extention; found ${EXT}"
fi

/usr/libexec/PlistBuddy -c "Print CFBundleIdentifier" "${PLIST}"
EXIT=$?

if [ -e "${TMP_DIR}" ]; then
  rm -rf "${TMP_DIR}"
fi

exit $EXIT