parallel version of script in the Alfred Remove Quarantine workflow

rq_parallel.sh

# Helpers
function app_as_json {
  /usr/bin/osascript -l JavaScript -e 'function run(argv) { return JSON.stringify({
    title: $(argv[0]).stringByDeletingPathExtension.lastPathComponent.js,
    subtitle: argv[0],
    type: "file",
    icon: { type: "fileicon", path: argv[0] },
    arg: argv[0]
  })}' "${1}"
}

# Grab all apps as reported by Spotlight
[[ "${only_root_applications}" -eq 1 ]] && readonly filter=(-onlyin '/Applications')
readonly all_apps=("${(@f)$(/usr/bin/mdfind "${filter[@]}" "kMDItemContentTypeTree == 'com.apple.application-bundle'")}")

# Declare an array to store background processes' outputs
declare -a json_outputs=()

# Separate quarantined apps
for app in "${all_apps[@]}"
do
  {
    # Initialize local variable to store JSON output
    local json_item
    # Skip unquarantined apps
    /usr/bin/xattr -p 'com.apple.quarantine' "${app}" &> /dev/null || exit
    # Skip signed and notarized apps, if option is enabled
    [[ "${ignore_signed}" -eq 1 ]] && /usr/sbin/spctl --assess --type install "${app}" && exit
    # Create JSON item
    json_item=$(app_as_json "${app}")
    # Output JSON item
    echo "${json_item}"
  } &
done | while IFS= read -r line; do
    json_outputs+=("$line")
done

# Wait for all background processes to finish
wait

# Exit early if nothing to do
if [[ "${#json_outputs[@]}" -eq 0 ]]
then
  printf '{ "items": [{
    "title": "No quarantined applications found",
    "subtitle": "Use this workflow’s File Action if you need more granularity"
  }]}'

  exit 0
fi

# List quarantined apps
printf '{ "items": ['
printf '%s,' "${json_outputs[@]}" | sed 's/,$//'
printf ']}'