Something

#!/bin/sh
# This code was captured from installpkg, Slackware 10, By Patric V.
# Modified by Eko M. Budi to suit old isolinux
# - exclude directory that will overwrite symlink
# - get the FILE LIST from previous check
# - capable to handle tgz, tbz, tlz
#

if [ -z "$1" ]; then
  echo "Usage: install-pkg <package> [ROOT]"
  exit 1
fi

package=$1
ROOT=${ROOT:-/}
[ "$2" ] && ROOT=$2
ADM_DIR=$ROOT/var/log
TMP=$ROOT/tmp

mkdir -p $ADM_DIR/packages
mkdir -p $ADM_DIR/scripts
mkdir -p $TMP

echo HO 

longname=`basename $package`
packagetype=${longname##*.}
shortname=${longname%.*}
packagebase=`pkgname $longname`

# Test tarball integrity, store the list
rm -f $TMP/tmplist
case $packagetype in
    tlz)
      lzmadec <$package | tar -t >$TMP/tmplist 2>/dev/null
        ;;
    tbz|tbz2)
      tar -tj <$package >$TMP/tmplist 2>/dev/null
	;;
    tgz)
      tar -tz <$package >$TMP/tmplist 2>/dev/null
        ;;
esac

TARERROR=$?
if [ ! "$TARERROR" = "0" ]; then
    echo "Package $package is corrupted" >> $flog
    rm -f $TMP/tmplist
    return 1
fi

echo HU

# make sure we're not installing files on top of existing symbolic links
# and exclude the directories that are a symlink
# big change, by Eko M. Budi
rm -f $TMP/exclist
rm -f $TMP/rmvlist
cat $TMP/tmplist | while read file ; do
    if [ -d $ROOT/${file%/} ]; then
	echo "$file: DIR"
	if [ -L $ROOT/${file%/} ]; then
    	    echo $file >> $TMP/exclist
	fi
    elif [ -L "$ROOT/$file" ] ; then
      echo "$file: SYMLINK"
      echo $file >> $TMP/rmvlist
      rm -f "$ROOT/$file"
    else
      echo "$file: FILE"
    fi
done

echo HI


# Extract
if [ -f $TMP/exclist ]; then
    EXCLUDED="-X $TMP/exclist"
else
    EXCLUDED=""
fi

case $packagetype in
    tlz)
      lzmadec <$package | tar -C $ROOT -xlUpv >$TMP/$shortname 2>/dev/null
        ;;
    tbz|tbz2)
      tar $EXCLUDED -C $ROOT -xjlUpv <$package >$TMP/$shortname 2>/dev/null
	;;
    tgz)
      tar $EXCLUDED -C $ROOT -xzlUpv <$package >$TMP/$shortname 2>/dev/null
        ;;
esac

rm -f $TMP/exclist
rm -f $TMP/tmplist

# Write the package file database entry and install the package
echo "PACKAGE NAME: $shortname" > $ADM_DIR/packages/$shortname
echo "COMPRESSED PACKAGE SIZE: $COMPRESSED" >> $ADM_DIR/packages/$shortname
echo "UNCOMPRESSED PACKAGE SIZE: $UNCOMPRESSED" >> $ADM_DIR/packages/$shortname
echo "PACKAGE LOCATION: $package" >> $ADM_DIR/packages/$shortname
echo "PACKAGE DESCRIPTION:" >> $ADM_DIR/packages/$shortname

# add dependency info
# big change, by kocil
if [ -r $ROOT/install/slack-required ]; then
    grep -ve '^#' $ROOT/install/slack-required | while read LINE; do
      echo "REQUIRED: $LINE" >> $ADM_DIR/packages/$shortname 2> /dev/null
    done
fi
  
if [ -r $ROOT/install/slack-desc ]; then
    cat $ROOT/install/slack-desc | grep "^$packagebase:" >> $ADM_DIR/packages/$shortname 2> /dev/null
    if [ "$shortname" != "$packagebase" ]; then
      cat $ROOT/install/slack-desc | grep "^$shortname:" >> $ADM_DIR/packages/$shortname 2> /dev/null
    fi
fi
 
echo "FILE LIST:" >> $ADM_DIR/packages/$shortname
if [ "`cat $TMP/$shortname | grep '^./' | wc -l | tr -d ' '`" = "1" ]; then
    # Good.  We have a package that meets the Slackware spec.
    cat $TMP/$shortname >> $ADM_DIR/packages/$shortname
else
    # Some dumb bunny built a package with something other than makepkg.  Bad!
    # Oh well.  Bound to happen.  Par for the course.  Fix it and move on...
    echo './' >> $ADM_DIR/packages/$shortname
    cat $TMP/$shortname | grep -v '^./$' | cut -b3- >> $ADM_DIR/packages/$shortname
fi

if [ -f $ROOT/install/doinst.sh ]; then
    echo "Executing install script for $shortname..."
    (cd $ROOT; sh install/doinst.sh -install)
    cp $ROOT/install/doinst.sh $ADM_DIR/scripts/$shortname
    chmod 755 $ADM_DIR/scripts/$shortname
fi 

# Clean up the mess...
rm -f $TMP/$shortname
rm -rf $ROOT/install
exit 0