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73 lines
1.5 KiB
Bash
Executable File
73 lines
1.5 KiB
Bash
Executable File
#!/bin/bash
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# i3blocks bluetooth indicator.
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set -euo pipefail
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SCRIPT_DIR=${BASH_SOURCE[0]%/*}
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[[ $SCRIPT_DIR == "${BASH_SOURCE[0]}" ]] && SCRIPT_DIR='.'
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# shellcheck source=linux_configuration/i3-configuration/i3blocks/persist_common.sh
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source "$SCRIPT_DIR/persist_common.sh"
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get_bluetooth_info() {
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local info
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info=$(bluetoothctl info 2> /dev/null) || info=''
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printf '%s\n' "$info"
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}
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emit() {
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local bluetooth_info connected device line state_key
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bluetooth_info=$(get_bluetooth_info)
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connected='no'
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device=''
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while IFS= read -r line; do
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case $line in
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*'Connected: yes')
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connected='yes'
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;;
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*'Alias: '*)
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device=${line#*Alias: }
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;;
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esac
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done <<< "$bluetooth_info"
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state_key="$connected|$device"
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if ! i3blocks_update_if_changed_key "bluetooth_state" "$state_key"; then
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return 0
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fi
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if [[ $connected == yes && -n $device ]]; then
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echo " $device"
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echo
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echo "#50FA7B"
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else
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echo " Disconnected"
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fi
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}
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is_persist_mode() {
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[[ ${BLOCK_INTERVAL:-} == "persist" ]]
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}
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emit_throttled() {
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if ! i3blocks_should_emit_by_interval_key "bluetooth_emit" "$EMIT_MIN_INTERVAL_S"; then
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return 0
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fi
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emit
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}
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EMIT_MIN_INTERVAL_S=2
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emit
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if is_persist_mode; then
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# React to BlueZ D-Bus signals instead of polling.
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if command -v dbus-monitor > /dev/null 2>&1; then
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dbus-monitor --system "type='signal',sender='org.bluez'" 2> /dev/null |
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while read -r line; do
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[[ $line == *"PropertiesChanged"* ]] || continue
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emit_throttled
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done
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fi
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fi
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