feat(swiftbar): add Homebrew updates plugin
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#!/usr/bin/env zsh
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# <xbar.title>Homebrew Updates</xbar.title>
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# <xbar.version>v1.0.0</xbar.version>
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# <xbar.author>trivk</xbar.author>
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# <xbar.desc>Checks Homebrew daily and offers manual or automatic upgrades.</xbar.desc>
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# <xbar.dependencies>zsh,brew</xbar.dependencies>
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set -u
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PATH="/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
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export HOMEBREW_NO_UPGRADE_AUTO_UPDATES_CASKS=1
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PLUGIN_PATH="${0:A}"
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BREW_BIN="${BREW_BIN:-$(command -v brew 2>/dev/null || true)}"
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CACHE_DIR="${HOME}/Library/Caches/SwiftBarBrewUpdates"
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STATE_DIR="${HOME}/Library/Application Support/SwiftBarBrewUpdates"
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FORMULAE_FILE="${CACHE_DIR}/outdated-formulae"
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CASKS_FILE="${CACHE_DIR}/outdated-casks"
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CHECKED_AT_FILE="${CACHE_DIR}/checked-at"
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ERROR_FILE="${CACHE_DIR}/last-error"
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MANUAL_CHECK_FILE="${CACHE_DIR}/manual-check-running"
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AUTO_FILE="${STATE_DIR}/auto-upgrade-enabled"
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LOG_FILE="${STATE_DIR}/upgrade.log"
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LOCK_DIR="${CACHE_DIR}/check.lock"
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CHECK_INTERVAL_SECONDS=86400
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mkdir -p "${CACHE_DIR}" "${STATE_DIR}"
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escape_swiftbar() {
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printf '%s' "$1" | sed 's/|/\\|/g'
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}
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escape_attribute() {
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printf '%s' "$1" | sed 's/\\/\\\\/g; s/"/\\"/g; s/|/\\|/g'
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}
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is_auto_enabled() {
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[ -f "${AUTO_FILE}" ]
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}
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is_manual_check_running() {
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[ -f "${MANUAL_CHECK_FILE}" ]
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}
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refresh_plugin() {
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plugin_name="${PLUGIN_PATH:t}"
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/usr/bin/open -g "swiftbar://refreshplugin?name=${plugin_name}" >/dev/null 2>&1 || true
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}
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start_manual_check() {
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is_manual_check_running && return 0
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touch "${MANUAL_CHECK_FILE}"
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nohup "${PLUGIN_PATH}" --check-now-worker >/dev/null 2>&1 &
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}
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run_manual_check_worker() {
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rm -f "${CHECKED_AT_FILE}"
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perform_daily_check
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check_status=$?
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rm -f "${MANUAL_CHECK_FILE}"
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refresh_plugin
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return "${check_status}"
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}
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write_error() {
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printf '%s\n' "$1" > "${ERROR_FILE}"
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}
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clear_error() {
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rm -f "${ERROR_FILE}"
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}
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record_check_time() {
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date +%s > "${CHECKED_AT_FILE}"
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}
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collect_outdated() {
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if ! "${BREW_BIN}" outdated --formula --quiet > "${FORMULAE_FILE}.tmp" 2> "${ERROR_FILE}.tmp"; then
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write_error "$(tail -n 1 "${ERROR_FILE}.tmp")"
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rm -f "${FORMULAE_FILE}.tmp" "${ERROR_FILE}.tmp"
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return 1
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fi
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if ! "${BREW_BIN}" outdated --cask --quiet > "${CASKS_FILE}.tmp" 2> "${ERROR_FILE}.tmp"; then
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write_error "$(tail -n 1 "${ERROR_FILE}.tmp")"
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rm -f "${FORMULAE_FILE}.tmp" "${CASKS_FILE}.tmp" "${ERROR_FILE}.tmp"
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return 1
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fi
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mv "${FORMULAE_FILE}.tmp" "${FORMULAE_FILE}"
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mv "${CASKS_FILE}.tmp" "${CASKS_FILE}"
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rm -f "${ERROR_FILE}.tmp"
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clear_error
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}
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run_upgrade_all() {
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upgrade_mode="${1:-manual}"
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{
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printf '\n[%s] Starting Homebrew upgrade\n' "$(date '+%Y-%m-%d %H:%M:%S')"
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if [ "${upgrade_mode}" = "auto" ]; then
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"${BREW_BIN}" upgrade --yes
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else
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"${BREW_BIN}" update && "${BREW_BIN}" upgrade --yes
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fi
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} >> "${LOG_FILE}" 2>&1
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upgrade_status=$?
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collect_outdated || true
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record_check_time
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return "${upgrade_status}"
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}
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run_upgrade_one() {
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package_name="$1"
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package_type="$2"
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case "${package_name}" in
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*[!A-Za-z0-9@+._/-]*|'')
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printf 'Invalid Homebrew package name: %s\n' "${package_name}" >&2
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exit 2
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;;
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esac
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case "${package_type}" in
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formula) type_flag="--formula" ;;
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cask) type_flag="--cask" ;;
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*)
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printf 'Invalid package type: %s\n' "${package_type}" >&2
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exit 2
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;;
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esac
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{
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printf '\n[%s] Upgrading %s\n' "$(date '+%Y-%m-%d %H:%M:%S')" "${package_name}"
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"${BREW_BIN}" upgrade --yes "${type_flag}" "${package_name}"
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} >> "${LOG_FILE}" 2>&1
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upgrade_status=$?
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collect_outdated || true
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record_check_time
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return "${upgrade_status}"
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}
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perform_daily_check() {
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if ! mkdir "${LOCK_DIR}" 2>/dev/null; then
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return 0
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fi
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trap 'rmdir "${LOCK_DIR}" 2>/dev/null || true' EXIT
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update_output="$("${BREW_BIN}" update 2>&1)"
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update_status=$?
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if [ "${update_status}" -ne 0 ]; then
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write_error "$(printf '%s\n' "${update_output}" | tail -n 1)"
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record_check_time
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return 1
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fi
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collect_outdated || {
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record_check_time
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return 1
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}
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record_check_time
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if is_auto_enabled && [ "$(outdated_count)" -gt 0 ]; then
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run_upgrade_all auto
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fi
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}
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check_is_due() {
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[ ! -f "${CHECKED_AT_FILE}" ] && return 0
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checked_at="$(cat "${CHECKED_AT_FILE}" 2>/dev/null || printf '0')"
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case "${checked_at}" in
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*[!0-9]*|'') return 0 ;;
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esac
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now="$(date +%s)"
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[ $((now - checked_at)) -ge "${CHECK_INTERVAL_SECONDS}" ]
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}
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file_line_count() {
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if [ -s "$1" ]; then
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wc -l < "$1" | tr -d ' '
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else
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printf '0'
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fi
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}
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outdated_count() {
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formula_count="$(file_line_count "${FORMULAE_FILE}")"
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cask_count="$(file_line_count "${CASKS_FILE}")"
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printf '%s' $((formula_count + cask_count))
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}
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format_checked_at() {
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if [ ! -f "${CHECKED_AT_FILE}" ]; then
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printf 'Never'
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return
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fi
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checked_at="$(cat "${CHECKED_AT_FILE}")"
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date -r "${checked_at}" '+%Y-%m-%d %H:%M' 2>/dev/null || printf 'Unknown'
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}
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render_package_menu() {
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package_file="$1"
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package_type="$2"
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heading="$3"
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[ -s "${package_file}" ] || return 0
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script_path="$(escape_attribute "${PLUGIN_PATH}")"
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if [ "${package_type}" = "formula" ]; then
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heading_symbol="shippingbox"
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package_symbol="cube.box"
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else
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heading_symbol="macwindow"
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package_symbol="app"
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fi
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printf '%s | sfimage=%s\n' "${heading}" "${heading_symbol}"
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while IFS= read -r package_name; do
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[ -n "${package_name}" ] || continue
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safe_name="$(escape_swiftbar "${package_name}")"
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printf -- '--%s | sfimage=%s bash="%s" param1=--upgrade-one param2=%s param3=%s terminal=false refresh=true\n' \
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"${safe_name}" "${package_symbol}" "${script_path}" "${safe_name}" "${package_type}"
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done < "${package_file}"
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}
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render_menu() {
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count="$(outdated_count)"
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checked_at="$(format_checked_at)"
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script_path="$(escape_attribute "${PLUGIN_PATH}")"
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if is_manual_check_running; then
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printf '… | sfimage=arrow.triangle.2.circlepath sfcolor=#007AFF sfsize=14 tooltip="Checking Homebrew updates…"\n'
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elif [ "${count}" -eq 0 ]; then
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printf '0 | sfimage=shippingbox.fill sfcolor=#34C759 sfsize=14 tooltip="Homebrew is up to date"\n'
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else
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printf '%s | sfimage=shippingbox.fill sfcolor=#FF9500 sfsize=14 tooltip="%s Homebrew package(s) outdated"\n' "${count}" "${count}"
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fi
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printf -- '---\n'
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printf 'Homebrew Updates | sfimage=shippingbox.fill sfcolor=#007AFF size=14\n'
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printf -- '--Outdated: %s | sfimage=number.circle\n' "${count}"
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printf -- '--Last check: %s | sfimage=clock\n' "${checked_at}"
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if [ -s "${ERROR_FILE}" ]; then
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error_message="$(escape_swiftbar "$(tail -n 1 "${ERROR_FILE}")")"
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printf -- '--Last check failed: %s | sfimage=exclamationmark.triangle.fill sfcolor=#FF3B30 color=#FF3B30\n' "${error_message}"
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fi
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printf -- '---\n'
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if is_auto_enabled; then
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printf 'Auto upgrade | checked=true sfimage=arrow.triangle.2.circlepath sfcolor=#34C759 bash="%s" param1=--disable-auto terminal=false refresh=true\n' "${script_path}"
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else
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printf 'Auto upgrade | checked=false sfimage=arrow.triangle.2.circlepath sfcolor=#8E8E93 bash="%s" param1=--enable-auto terminal=false refresh=true\n' "${script_path}"
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fi
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if is_manual_check_running; then
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printf 'Check for updates now | sfimage=arrow.clockwise disabled=true\n'
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else
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printf 'Check for updates now | sfimage=arrow.clockwise bash="%s" param1=--check-now terminal=false refresh=true\n' "${script_path}"
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fi
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if [ "${count}" -gt 0 ]; then
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printf 'Upgrade all in background | sfimage=arrow.up sfcolor=#007AFF bash="%s" param1=--upgrade-all terminal=false refresh=true\n' "${script_path}"
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printf -- '---\n'
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render_package_menu "${FORMULAE_FILE}" formula 'Formulae'
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render_package_menu "${CASKS_FILE}" cask 'Casks'
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fi
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if [ -f "${LOG_FILE}" ]; then
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log_path="$(escape_attribute "${LOG_FILE}")"
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printf -- '---\n'
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printf 'Open upgrade log | sfimage=doc.text bash=/usr/bin/open param1="%s" terminal=false\n' "${log_path}"
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fi
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}
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if [ -z "${BREW_BIN}" ]; then
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printf '! | sfimage=exclamationmark.triangle.fill sfcolor=#FF3B30 color=#FF3B30\n'
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printf -- '---\nHomebrew was not found in /opt/homebrew or /usr/local.\n'
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exit 0
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fi
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case "${1:-}" in
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--enable-auto)
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touch "${AUTO_FILE}"
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exit 0
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;;
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--disable-auto)
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rm -f "${AUTO_FILE}"
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exit 0
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;;
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--check-now)
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start_manual_check
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exit $?
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;;
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--check-now-worker)
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run_manual_check_worker
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exit $?
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;;
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--upgrade-all)
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run_upgrade_all
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exit $?
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;;
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--upgrade-one)
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run_upgrade_one "${2:-}" "${3:-}"
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exit $?
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;;
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esac
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if check_is_due; then
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perform_daily_check || true
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fi
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render_menu
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