#!/bin/sh

SM_DEST=$1
shift

if ! test -d $SM_DEST; then
   echo "SM_DEST $SM_DEST does not exist";
fi

if ! test -d $SM_DEST/patches; then
   mkdir $SM_DEST/patches
fi

./symlink-tree preserve $SM_DEST

for SM_SRC in $*; do
  patchname=`echo $SM_SRC | sed 's/.*\.//`
  echo "Generating new \"$patchname\" patch for $SM_DEST tree"
  ./clobber-tree $SM_SRC

  diff -c -N -r -xpatches -x.symlinks $SM_DEST $SM_SRC | \
    grep -v "Only in $SM_DEST: patches" > $SM_DEST/patches/patch.$patchname
done

./symlink-tree restore $SM_DEST