#!/system/bin/sh
#
# Functions for backuptool_ab.sh
#

export S=/system
export C=/postinstall/tmp/backupdir
export V=18.1
export backuptool_ab=true

copy_file() {
  old=`umask`
  umask 0322
  mkdir -m755 -p `dirname $2`
  umask "$old"

  cp -dp --preserve=a "$1" "$2"
}

move_file() {
  old=`umask`
  umask 0322
  mkdir -m755 -p `dirname $2`
  umask "$old"

  mv "$1" "$2"
}

backup_file() {
  if [ -e "$1" -o -L "$1" ]; then
    # dont backup any apps that have odex files, they are useless
    if ( echo "$1" | grep -q "\.apk$" ) && [ -e `echo "$1" | sed -e 's/\.apk$/\.odex/'` ]; then
      echo "Skipping odexed apk $1";
    else
      copy_file "$1" "$C/$1"
    fi
  fi
}

restore_file() {
  if [ -e "$C/$1" -o -L "$C/$1" ]; then
    move_file "$C/$1" "/postinstall/$1";
    if [ -n "$2" ]; then
      echo "Deleting obsolete file $2"
      rm "$2";
    fi
  fi
}