sa-learn-cache

   1 #! /bin/sh
   2 # Depends: chiark-utils-bin
   3 set -e
   4
   5 DIR="$HOME/tmp/sa-learn-cache"
   6
   7 LOCKED=false
   8 if [ "$1" = --locked ]; then
   9     LOCKED=:
  10     shift
  11 fi
  12
  13 if [ "$1" = --spam ]; then
  14     CACHE="$DIR/spam"
  15 elif [ "$1" = --ham ]; then
  16     CACHE="$DIR/ham"
  17 else
  18     echo "don't know how to handle anything other than --spam or --ham" >&2
  19     exit 1
  20 fi
  21 LOCK="$CACHE.lock"
  22
  23 mkdir -p "$DIR"
  24
  25 if ! $LOCKED; then
  26     exec with-lock-ex -w "$LOCK" "$0" --locked "$@"
  27 else
  28     if [ -e "$CACHE" ]; then
  29         SIZE="$(stat -c %s "$CACHE")"
  30     else
  31         SIZE=0
  32     fi
  33     cat >> "$CACHE"
  34     if [ "$SIZE" -gt 4194304 ]; then
  35         sa-learn --mbox --no-sync "$@" < "$CACHE"
  36         rm -f "$CACHE"
  37     fi
  38 fi
  39
  40 exit 0