#!/bin/sh
# installation script

VERBOSE=no
MATH=soft
prog=
rootdir=/

checkfpu ()
{
  echo "Do you have a 387? [y/n] "
  read MATH
  if [ x${MATH}x = "xyx" ]
  then
    MATH=hard
  else
    MATH=soft
  fi
}

checkreturn ()
{
  if [ $? != 0 ]
  then
    echo Failed to $1.
    exit 1
  fi
}

fixfiles ()
{
  BINS=$1

  if [ $VERBOSE = yes ]; then set -x; fi

  if [ x${BINS}x != xx ]; then
    cd /usr/bin
    chown bin:bin $BINS
    chmod 755 $BINS
  fi

  chown -R bin:bin /usr/include /usr/g++-include /lib /usr/lib/gcc-lib
  chmod -R 755 /lib /usr/lib/gcc-lib

  # this is for the header files
  chmod 755 /usr/include /usr/g++-include
  # Yes, 'find' would be cleaner and faster, but it is not on rootdisk
  cd /usr/include
  chmod 775 *
  chmod 664 *.h
  chmod 664 */*
  cd /usr/g++-include
  chmod 775 *
  chmod 664 *.h
  chmod 664 */*

  chmod 664 /usr/lib/gcc-lib/i386-linux/*/*.?
  chmod 664 /usr/lib/gcc-lib/i386-linux/*/shared/*.?

  for f in in /usr/lib/gcc-lib/i386-linux/*/jump/*.?
  do
    if [ -f $f ]; then
      chmod 664 $f
    else
      break
    fi
  done
}

# check if it is a directory.
checkdir ()
{
  if [ x${1}x = xx ]
  then
    echo No directory to check.
    return 1
  fi

  for f in $*
  do
    if [ ! -d $f ]; then
      echo There is no such a directory, $f.
      echo Please make sure there is one and it has right stuffs in it.
      exit 1
    fi
  done
  return 0
}

checkbinfile ()
{
  for f in $*
  do
    if [ ! -f /bin/$f -a ! -f /usr/bin/$f ]; then
      echo There is no such a file, $f.
      return 1
    fi
  done
  return 0
}

checkfile ()
{
  if [ x${1}x = xx ]
  then
    echo No file to check.
    return 1
  fi

  for f in $*
  do
    if [ ! -f $f ]; then
      echo There is no such a file, $f.
      echo Please make sure there is one and it has right stuffs in it.
      exit 1
    fi
  done
  return 0
}

checkroot ()
{
  uid=`id | sed -e 's/uid=\([0-9]*\)/\1/' -e 's/[^a-z0-9=].*//'`
  if [ $? != 0 ]
  then
    echo Fail to get \"root\" id. You may need a working \"id\" and
    echo \"sed\".
    exit 1
  fi

  if [ x${uid}x != x0x ]
  then
    echo You have to be root to run this script.
    exit 1
  fi
}

usage ()
{
  echo Usage: sh $prog [-v] [$filename]
  echo Note: \"sh\" must be zsh or bash.
  exit 1
}

checkroot

prog=$0

if [ $# != 2 -a $# != 3 ]
then
  usage
fi

case $1 in
-v)
  shift
  set -x
  VERBOSE=yes
  ;;
esac

case $# in
1)
  filename=`basename $0 .sh`.T.Z
  ;;
2)
  filename=$1
  ;;
*)
  usage
  ;;
easc


checkfile $filename

echo Installing \"$filename\" .....

working=`pwd`
cd $rootdir

if [ $VERBOSE = yes ];
then
  zcat $working/$file | tar xvvof -
else
  zcat $working/$file | tar xof -
fi

checkreturn "unpack $filename"

fixfiles