patch files from mirror instead of root

this way we dont accidentally patch already patched files
and also dont need the checks to remove already existing v4a drivers from the audio effects files

Author: programminghoch10

magiskmodule/customize.sh

@@ -7,6 +7,8 @@ SDCARD="/storage/emulated/0"
 FOLDER="$SDCARD/Android/data/$VIPERFXPACKAGE/files"
 
 IFS=$'\n'
+SEARCH_ROOT="$(magisk --path)/.magisk/mirror"/
+[ ! -d "$SEARCH_ROOT" ] && SEARCH_ROOT=/
 
 # Uninstall v4a app if installed
 [ -n "$(pm list packages | grep "$VIPERFXPACKAGE")" ] && pm uninstall -k "$VIPERFXPACKAGE" &>/dev/null
@@ -54,24 +56,25 @@ EFFECT_NAME="v4a_fx"
 EFFECT_UUID="41d3c987-e6cf-11e3-a88a-11aba5d5c51b"
 LIBRARY_FILE="lib$EFFECT_NAME.so"
 LIBRARY_FILE_PATH="/system/vendor/lib/soundfx/$LIBRARY_FILE"
-AUDIO_EFFECTS_FILES="$(find /system /vendor -type f -name "*audio_effects*.conf" -o -name "*audio_effects*.xml")"
+AUDIO_EFFECTS_FILES="$( \
+  find -H \
+  $SEARCH_ROOT/system $SEARCH_ROOT/vendor \
+  -type f -name "*audio_effects*.conf" -o -name "*audio_effects*.xml" \
+  | sed "s|^$SEARCH_ROOT||" )"
 for ORIGINAL_FILE in $AUDIO_EFFECTS_FILES; do
   ui_print "    Patching $ORIGINAL_FILE"
-  FILE="$MODPATH"/"$(sed -e 's|^/system/|/|g' -e 's|^/|/system/|' <<< "$ORIGINAL_FILE")"
+  FILE="$MODPATH"/"$(echo "$ORIGINAL_FILE" | sed -e 's|^/system/|/|g' -e 's|^/|/system/|')"
   mkdir -p "$(dirname $FILE)"
+  ORIGINAL_FILE="$SEARCH_ROOT"/"$ORIGINAL_FILE"
   case "$FILE" in
     *.conf)
       sed \
-        -e "/v4a_standard_fx {/,/}/d"
-        -e "/v4a_fx {/,/}/d"
         -e "s|^effects {|effects {\n  $LIBRARY_NAME {\n    library $EFFECT_NAME\n    uuid $EFFECT_UUID\n  }|" \
         -e "s|^libraries {|libraries {\n  $EFFECT_NAME {\n    path $LIBRARY_FILE_PATH\n  }|" \
         < "$ORIGINAL_FILE" > "$FILE"
       ;;
     *.xml)
       sed \
-        -e "/v4a_standard_fx/d"
-        -e "/v4a_fx/d"
         -e "s|<libraries>|<libraries>\n        <library name=\"$EFFECT_NAME\" path=\"$LIBRARY_FILE\"/>|" \
         -e "s|<effects>|<effects>\n        <effect name=\"$LIBRARY_NAME\" library=\"$EFFECT_NAME\" uuid=\"$EFFECT_UUID\"/>|" \
         < "$ORIGINAL_FILE" > "$FILE"