#!/bin/sh
# Create squashfs module from a directory or a Slackware package.
# Module can then be added to liveslak/addons directory.

if [ "x$1" = "x" ]; then
   echo "-- Usage:"
   echo "   $(basename $0) <packagename|directory> modulename.sxz"
   exit 1
fi

# .sxz extension uses xz compression:
COMPR="xz"

if [ -d "$1" ]; then
  echo "Creating .sxz from directory."
  PKGDIR="$1"
else
  MODEXT=$(echo "$2" |rev |cut -d'.' -f1 |rev)
  case $MODEXT in
    sxz) COMPR="xz" ;;
    sgz) COMPR="gzip" ;;
    xzm) COMPR="xz" ;;
      *) echo "-- Unsupported module extension '$MODEXT'" ; exit 1 ;;
  esac 
  echo "Creating .${MODEXT} from package."
  TMPDIR=$(mktemp -t -d makesxz.XXXXXX)
  PKGDIR="$TMPDIR"
  if [ ! -d $PKGDIR ]; then
    echo "-- Failed to create temporary directory for extraction!"
    exit 1
  fi
  # Extract the package:
  /sbin/installpkg -root $PKGDIR "$1"
  if [ $? -ne 0 ]; then
    echo "-- Error installing package!"
    exit 1
  fi
fi

mksquashfs "${PKGDIR}" "$2" -comp ${COMPR} -b 256K $3 $4 $5 $6 $7 $8 $9
if [ $? -ne 0 ]; then
  echo "-- Error creating squashfs compressed module"
  exit 1
fi

# If we extracted a package, clean up now:
[ ! -z "$TMPDIR" ] && rm -rf $TMPDIR