#!/bin/sh
# Copyright 1994, Patrick Volkerding, Moorhead, Minnesota USA 
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
make_install_script() {
 COUNT=1
 LINE="`sed -n "$COUNT p" $1`"
 while [ ! "$LINE" = "" ]; do
  LINKGOESIN="`echo "$LINE" | cut -f 1 -d " "`" 
  LINKGOESIN="`dirname $LINKGOESIN`" 
  LINKNAMEIS="`echo "$LINE" | cut -f 1 -d ' '`"
  LINKNAMEIS="`basename "$LINKNAMEIS"`"
  LINKPOINTSTO="`echo "$LINE" | cut -f 3 -d ' '`"
  echo "( cd $LINKGOESIN ; rm -rf $LINKNAMEIS )"
  echo "( cd $LINKGOESIN ; ln -sf $LINKPOINTSTO $LINKNAMEIS )"
  COUNT=`expr $COUNT + 1`
  LINE="`sed -n "$COUNT p" $1`"
 done
}

usage() {
 cat << EOF

Usage: makepkg package_name.tgz

Makes a Slackware compatible "*.tgz" package containing the contents of the 
current and all subdirectories. If symbolic links exist, they will be removed
and an installation script will be made to recreate them later. This script
will be called "install/doinst.sh". You may add any of your own ash-compatible
shell scripts to this file and rebuild the package if you wish.

EOF
}

# These tests, while by no means exhaustive, will give a usage message
# and exit with a wide range of bad input.

if [ ! $# = 1 -a ! $# = 0 ]; then
 usage;
 exit
fi
echo
echo "Slackware package maker, version 1.0."
if [ $# = 0 ]; then
 usage;
 echo "You have not provided a name for this package."
 echo -n "What would you like to call it? "
 read PACKAGE_NAME;
else
 PACKAGE_NAME=$1
fi
TARGET_NAME="`dirname $PACKAGE_NAME`"
PACKAGE_NAME="`basename $PACKAGE_NAME`"
TAR_NAME="`basename $PACKAGE_NAME .tgz`"
echo
echo "Searching for symbolic links:"
find . -type l -exec ls -l {} \; | cut -b58- | tee /tmp/iNsT-a.$$
if [ ! "`filesize /tmp/iNsT-a.$$`" = "0" ]; then
 echo
 echo "Making symbolic link creation script:"
 make_install_script /tmp/iNsT-a.$$ | tee doinst.sh
fi
echo
if [ ! "`filesize /tmp/iNsT-a.$$`" = "0" ]; then
 if [ -r install/doinst.sh ]; then
  echo "Unless your existing installation script already comtains the code"
  echo "to create these links, you should append these lines to your existing"
  echo "install script. Now's your chance. :^)"
  echo
  echo "Would you like to add this stuff to the existing install script and"
  echo -n "remove the symbolic links ([y]es, [n]o)? "
 else
  echo "It is recommended that you make these lines your new installation script."
  echo
  echo "Would you like to make this stuff the install script for this package"
  echo -n "and remove the symbolic links ([y]es, [n]o)? "
 fi
 read SCRIPTADD;
 if [ "$SCRIPTADD" = "y" ]; then
  if [ -r install/doinst.sh ]; then
   UPDATE="t"
   cat doinst.sh >> install/doinst.sh
  else
   mkdir install
   cat doinst.sh > install/doinst.sh
  fi
  echo
  echo "Removing symbolic links:"
  find . -type l -exec rm -v {} \;
  echo
  if [ "$UPDATE" = "t" ]; then
   echo "Updating your ./install/doinst.sh..."
  else
   echo "Creating your new ./install/doinst.sh..."
  fi
 fi
else
 echo "No symbolic links were found, so we won't make an installation script."
 echo "You can make your own later in ./install/doinst.sh and rebuild the"
 echo "package if you like."
fi
rm -f doinst.sh /tmp/iNsT-a.$$
echo
echo "This next step is optional - you can set the directories in your package"
echo "to some sane permissions. If any of the directories in your package have"
echo "special permissions, then DO NOT reset them here!"
echo 
echo "Would you like to reset all directory permissions to 755 (drwxr-xr-x) and"
echo -n "directory ownerships to root.root ([y]es, [n]o)? "
read PERMS;
echo
if [ "$PERMS" = "y" ]; then
 find . -type d -exec chmod -v 755 {} \; 
 find . -type d -exec chown -v root.root {} \;
fi
echo
echo "Creating tar file $TAR_NAME.tar..."
echo
tar -cvf $TAR_NAME.tar .
echo
echo "Gzipping $TAR_NAME.tar..."
gzip -9 $TAR_NAME.tar
echo
echo "Renaming $TAR_NAME.tar.gz to $PACKAGE_NAME..."
mv $TAR_NAME.tar.gz $PACKAGE_NAME
if [ ! "$TARGET_NAME" = "." ]; then
  echo
  echo "Moving $PACKAGE_NAME to $TARGET_NAME..."
  mv $PACKAGE_NAME $TARGET_NAME
fi
echo
echo "Package creation complete."
echo