54-CustomUISounds.sh

#!/system/bin/sh
# 
# ADDOND_VERSION=2
# 
# /system/addon.d/54-CustomUISounds.sh
#
# Shamelessly modified from the addon.d script provided by OpenGApps.
# This script preserves any listed custom UI audio files through a LineageOS OTA.

. /postinstall/tmp/backuptool.functions

if [ -z $backuptool_ab ]; then
 SYS=$S
 TMP=/tmp
else
 SYS=/postinstall/system
 TMP=/postinstall/tmp
fi

list_files() {
cat <<EOF
media/audio/ui/Lock.ogg
media/audio/ui/Unlock.ogg
media/audio/ui/LowBattery.ogg
EOF
}

case "$1" in
 backup)
   list_files | while read -r FILE DUMMY; do
     backup_file "$S"/"$FILE"
   done
 ;;
 restore)
   list_files | while read -r FILE REPLACEMENT; do
     R=""
     [ -n "$REPLACEMENT" ] && R="$S/$REPLACEMENT"
     [ -f "$C/$S/$FILE" ] && restore_file "$S"/"$FILE" "$R"
   done
 ;;
 pre-backup)
   # Stub
 ;;
 post-backup)
   # Stub
 ;;
 pre-restore)
   # Move the stock files out of the way
   # This part is untested, will update later. Should work...
   list_files | while read -r FILE DUMMY; do
     mv "$SYS"/"$FILE" "$SYS"/"FILE".bak
   done
   # Previously...
   #mv $SYS/media/audio/ui/Logg.ogg $SYS/media/audio/ui/Logg.ogg.bak
   #mv $SYS/media/audio/ui/Unlock.ogg $SYS/media/audio/ui/Unlock.ogg.bak
   #mv $SYS/media/audio/ui/LowBattery.ogg $SYS/media/audio/ui/LowBattery.ogg.bak
 ;;
 post-restore)
   # Stub
 ;;
esac