#!/bin/sh
#-----------------------------------------------------------------------
#! Pre-configure an AIPS installation from a CDrom (readonly) device
## Shell-script
#-----------------------------------------------------------------------
#;  Copyright (C) 1995-1998, 2001, 2004-2005, 2007
#;  Associated Universities, Inc. Washington DC, USA.
#;
#;  This program is free software; you can redistribute it and/or
#;  modify it under the terms of the GNU General Public License as
#;  published by the Free Software Foundation; either version 2 of
#;  the License, or (at your option) any later version.
#;
#;  This program is distributed in the hope that it will be useful,
#;  but WITHOUT ANY WARRANTY; without even the implied warranty of
#;  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#;  GNU General Public License for more details.
#;
#;  You should have received a copy of the GNU General Public
#;  License along with this program; if not, write to the Free
#;  Software Foundation, Inc., 675 Massachusetts Ave, Cambridge,
#;  MA 02139, USA.
#;
#;  Correspondence concerning AIPS should be addressed as follows:
#;         Internet email: aipsmail@nrao.edu.
#;         Postal address: AIPS Project Office
#;                         National Radio Astronomy Observatory
#;                         520 Edgemont Road
#;                         Charlottesville, VA 22903-2475 USA
#-----------------------------------------------------------------------
# Usage: ./CDSETUP
#
# This script is intended as a bridge between INSTEP1 and a read-only
# file system on which the AIPS distribution may be located.
#-----------------------------------------------------------------------
#                                       Shell functions
#                                       shorten the echo command
ei1 () {
  echo "CDSETUP: $1"
}
ni1 () {
  if [ "`echo -n YES`" = "YES" ] ; then
    echo -n "CDSETUP: $1"
  else
    echo "CDSETUP: $1\c"
  fi
}
#                                       Bail out
die () {
  if [ "$1" != "" ] ; then
    echo "CDSETUP: $1"
  fi
  echo "CDSETUP: Cannot continue, stopping NOW."
  exit 1
}
#                                       Other shortcuts
spc="echo"
symtest="-h"
[ `uname -s` = AIX ] && symtest="-L"
#                                       Introduce ourselves
ei1 "                         AIPS CD-rom Setup"
ei1 "                         ================="
$spc
ei1 "This script will get you started in your installation of AIPS"
ei1 "from CDrom (or other read-only random access media) to hard disk."
ei1 "There are three operations supported:"
$spc
ei1 "  1.  Run from CDrom; this leaves the binaries on the CDrom, and"
ei1 "      only installs a minimal footprint on your hard disk.  This"
ei1 "      may incur a penalty in speed, and you need the CD mounted"
ei1 "      to run AIPS."
$spc
ei1 "  2.  Full install; this copies more or less everything to your"
ei1 "      hard disk.  You may need 500 or more Megabytes of free space"
ei1 "      but will not have the speed penalty and do not need the CD"
ei1 "      mounted in order to run AIPS."
$spc
ei1 "  3.  Alter an existing system from partial to full."
$spc
ei1 "  4.  Alter an existing system from full to partial."
$spc
opt=0
while [ \( $opt -lt 1 \) -o \( $opt -gt 4 \) ] ; do
   ni1 "Which option do you want? (999 to quit) "; read opt
   [ "$opt" = "" ] && opt=0
   [ $opt = 999 ] && die "User-requested termination"
   case $opt in
     1|2|3|4) ;;
     *) ei1 "Invalid selection.  Try again."; opt=0;;
   esac
done
#                                       Where is the CDrom mounted?
dir=`dirname $0`
[ ! -d "$dir" ] && dir="/mnt/cdrom"
[ "$dir" = "." ] && dir="/mnt/cdrom"
ni1 "Where is the AIPS CDrom mounted? ($dir): "; read cdmnt; $spc
[ "$cdmnt" = "" ] && cdmnt=$dir
[ ! -d $cdmnt ] && die "Cannot find directory $cdmnt"

old=`pwd`
cd $cdmnt
vers=`/bin/ls -ldt [0-9][0-9]???[0-9][0-9] | grep '^d' | head -n 1 | \
      awk '{print $NF}'`
  [ "$vers" = "" ] && die "Cannot find AIPS in $cdmnt."
cd $old
ei1 "A local (write-enabled) AIPS_ROOT is needed; this is where your"
ei1 "AIPS installation will be placed.  You need about 500 Megabytes"
ei1 "free for a full install of a SINGLE architecture (add 350 for each"
ei1 "additional), and about 10 Megabytes if running from CDrom."; $spc
here=`pwd`
prmt="Where do you want AIPS?"
[ $opt = 3 ] && prmt="Where did you install AIPS?"
[ $opt = 4 ] && prmt="Where did you install AIPS?"
if [ $here = $cdmnt ] ; then
  ni1 "$prmt :"; read AIPS_ROOT; $spc
else
  ni1 "$prmt ($here) :"; read AIPS_ROOT; $spc
  [ "$AIPS_ROOT" = "" ] && AIPS_ROOT=$here
fi
[ "$AIPS_ROOT" = "" ] && die "No AIPS_ROOT given."
if [ ! -d $AIPS_ROOT ] ; then
  ei1 "Directory $AIPS_ROOT does not exist"
  if [ $opt = 3 ] ; then
    die "I cannot change your installation if I cannot find it!"
  fi
  if [ $opt = 4 ] ; then
    die "I cannot change your installation if I cannot find it!"
  fi
  ni1 " - Create it? (Y) "; read yn; [ "$yn" = "" ] && yn="Y"; $spc
  case $yn in
    y*|Y*) mkdir -p $AIPS_ROOT;;
    *) die "Ok, try again.  Bye.";;
  esac
  [ ! -d $AIPS_ROOT ] && die "Failed to create $AIPS_ROOT directory"
fi
case $opt in
  1) runcd=yes;;
  2) runcd=no;;
  3) runcd=no;;
  4) runcd=yes
     opt=3
     ;;
esac
#                                       Space command
spcmd="du -sk"
dfcmd="df -k"
a=`du -sk $cdmnt/CDSETUP 2>&1 1>/dev/null `
if [ "$a" != "" ] ; then
  spcmd="du -s"
  dfcmd="df"
fi
#                                       Move to target area
cd $AIPS_ROOT
#                                       check space available
space=`$spcmd $cdmnt | awk '{print $1}'`
ARCHES=""
basespace=$space
ei1 "This CDrom has binaries for the following architectures:"; $spc
for i in $cdmnt/$vers/*/LOAD/AIPS.EXE ; do
   j=`echo $i | sed -e "s,$cdmnt/$vers/\([^/]*\).*,\1,"`
   ARCHES="$ARCHES $j"
   s=`$spcmd $cdmnt/$vers/$j | awk '{print $1}'`
   ei1 "$j: uses $s Kbytes for binaries and libraries"
   sa="SPACE_$j"
   eval "$sa=$s"
   basespace=`expr $basespace - $s`
done
fitsp=`$spcmd $cdmnt/FITS | awk '{print $1}'`
ei1 "The FITS area on the CDrom takes up $fitsp Kbytes"
txtsp=`$spcmd $cdmnt/TEXT | awk '{print $1}'`
ei1 "The TEXT area on the CDrom takes up $txtsp Kbytes"
basespace=`expr $basespace - $fitsp`
basespace=`expr $basespace - $txtsp`
#                                       old tail grammar for Solaris
free=`$dfcmd . | tail -1 | awk '{print $4}'`
case $free in
#                                       old tail grammar for Solaris
  *%) free=`$dfcmd . | tail -1 | awk '{print $3}'`;;
esac
ei1 "Total space used on CDrom: $space Kbytes"
ei1 " Base space (no binaries): $basespace Kbytes"; $spc
ei1 "(Add the base space to whatever binaries you plan on installing"
ei1 " to get the amount of space you need)"; $spc
#                                       Need to modify this if more than
#                                       two architectures are put on the
#                                       CDROM.
ei1 "Space free on your hard drive: $free Kbytes"
if [ $runcd != yes ] ; then
#                                       Gets space for ALL the CDrom;
#                                       probably overkill if multiple
#                                       architectures are put on it.
  if [ $basespace -gt $free ] ; then
    ei1 "********************************************************"
    ei1 "There is not enough free space for the base system under"
    ei1 "$AIPS_ROOT.  This will not work."
    if [ $opt = 3 ] ; then
      $spc
      ni1 "If you are SURE there is enough space, then enter YES: "
      read yn; $spc
      [ "$yn" = YES ] || die "Insufficient disk space."
    else
      die "Insufficient disk space."
    fi
  elif [ $space -gt $free ] ; then
    ei1 "========================================================"
    ei1 "There may be be insufficient free space under $AIPS_ROOT"
    ei1 "depending on how many architectures you choose to install."
    $spc; ni1 "Press RETURN to continue..."; read dum; $spc
  else
    ei1 "There appears to be enough space free under the directory"
    ei1 "$AIPS_ROOT."
  fi
  $spc
else
  if [ $free -lt 12000 ] ; then
    ei1 "********************************************************"
    ei1 "Insufficient free space under $AIPS_ROOT"
    ei1 "(There is less than 12 Megabytes available)"
    die "********************************************************"
  else
    ei1 "There appears to be enough space ($free) to install AIPS."
    ei1 "(The minimum footprint is about 12 Megabytes)"
    $spc
  fi
fi
#                                       TEXT area
if [ $runcd = yes ] ; then
  [ -d ./TEXT ] && rm -fr TEXT
  ei1 "Creating symlink to TEXT area on CDrom..."
  ln -s $cdmnt/TEXT .
else
#                                       Should test for symlink...
  rm -fr TEXT
  ei1 "Copying TEXT area from CDrom ($txtsp Kbytes)..."
  cp -r $cdmnt/TEXT .
  ei1 "Done"; $spc
fi
#                                       These are only needed for the
#                                       installation phase.
if [ $opt = 3 ] ; then
   : nothing
else
  rm -f BIN
  ei1 "Creating temp symlink to BIN area on CDrom..."
  ln -s $cdmnt/BIN
fi
if [ ! -d DA00 ] ; then
  mkdir DA00
fi
#                                       Many things do not need redone
if [ $opt != 3 ] ; then
  old=`pwd`
  cd DA00
  for i in $cdmnt/DA00/* ; do
    j=`basename $i`
    rm -f $j
    ei1 "Creating symlink in DA00 to $j area on CDrom..."
    ln -s $i
  done
  cd $old
#                                       Make version area.
  mkdir $vers
  cd $vers
  mkdir SYSTEM
  mkdir SYSTEM/UNIX
  ln -s $cdmnt/$vers/SYSTEM/VMS SYSTEM/VMS
  ln -s $cdmnt/$cers/SYSTEM/AREAS.DAT SYSTEM/AREAS.DAT
  ei1 "Copying SYSTEM/UNIX files..."
  cp -r $cdmnt/$vers/SYSTEM/UNIX/* SYSTEM/UNIX/
  ei1 "...done."
else
  cd $vers
fi
#                                       Some areas can be symlinked
if [ $runcd = yes ] ; then
  if [ $opt = 3 ] ; then
    ei1 "Removing source code areas, resorting to symlinks."
    for i in AIPS APL DOC HELP HIST INC Q QY RUN UPDATE Y ; do
      rm -fr $i
      if [ $? -ne 0 ] ; then
        die "Apparent failure removing `pwd`$i..."
      fi
    done
  fi
  ei1 "Making symbolic links to areas that are rarely needed, and"
  ei1 "unnecessary for running AIPS.  These include:"; $spc
  ei1 "   $vers/DOC  $vers/AIPS  $vers/APL  $vers/HIST"
  ei1 "   $vers/Q    $vers/QY    $vers/UPDATE"; $spc
  ei1 "These will now only be accessible when the CDrom is mounted."
  $spc
#                                       Populate source with symlinks
  for i in AIPS APL DOC HELP HIST INC Q QY RUN UPDATE Y ; do
    ln -s $cdmnt/$vers/$i .
  done
else
  if [ $opt = 3 ] ; then
    ei1 "Removing source code symlinks, resorting to full copy of code"
    for i in AIPS APL DOC HELP HIST INC Q QY RUN UPDATE Y ; do
      rm -f $i
      if [ $? -ne 0 ] ; then
        die "Apparent failure removing `pwd`/$i/..."
      fi
    done
  fi
  for i in AIPS APL DOC HELP HIST INC Q QY RUN UPDATE Y ; do
    ei1 "Copying $vers/$i/..."
    mkdir $i
    cp -r $cdmnt/$vers/$i/* $i/
    ei1 "... done."
  done
fi
#                                       Some things we need to copy
if [ $opt != 3 ] ; then
#                                        not a complete list
  for i in $ARCHES ; do
    mkdir $i; mkdir $i/SYSTEM
    cp $cdmnt/$vers/$i/SYSTEM/* $i/SYSTEM/
  done
fi
$spc
if [ $opt = 3 ] ; then
  if [ $runcd = yes ] ; then
    ei1 "Now to remove the local LOAD area and symlink to the CDrom..."
  else
    ei1 "Now to copy the LOAD and other areas to your hard disk..."
  fi
else
  if [ $runcd = yes ] ; then
    ei1 "Now to make symlinks to the LOAD and other areas, and copy"
    ei1 "essential files only."
  else
    ei1 "Now to copy the LOAD and other areas to your hard disk."
  fi
fi
$spc
for i in $ARCHES ; do
  if [ -f $cdmnt/$vers/$i/LOAD/AIPS.EXE ] ; then
    if [ $opt = 3 ] ; then
      if [ $runcd = yes ] ; then
        ni1 "Remove local $i LOAD area and symlink to CDROM? (y) "
      else
        ni1 "Install binaries for $i? (y) "
      fi
    else
      if [ $runcd = yes ] ; then
        ni1 "Install pointers to binaries on CDrom for $i? (y) "
      else
        ni1 "Install binaries for $i? (y) "
      fi
    fi
    read yn; [ "$yn" = "" ] && yn=y
    $spc
    case $yn in
      Y*|y*)
        if [ $opt != 3 ] ; then
          mkdir $i/ERRORS $i/INSTALL $i/PREP $i/TEMPLATE
	  mkdir $i/MEMORY; cp $cdmnt/$vers/$i/MEMORY/* $i/MEMORY/
          chmod +w $i/MEMORY/*
        fi
        for j in LIBR LOAD ; do
          if [ $runcd = yes ] ; then
	    if [ $opt = 3 ] ; then
              ei1 "Removing old `pwd`/$i/$j area on hard disk..."
	      rm -fr $i/$j
  	    fi
            ln -s $cdmnt/$vers/$i/$j $i/$j
          else
            ei1 "Installing $j area for $i..."
	    [ $j = LOAD ] && ei1 "(this will take a while)"
	    if [ $opt = 3 ] ; then
              rm -fr $i/$j
	    fi
            mkdir $i/$j; cp -r $cdmnt/$vers/$i/$j/* $i/$j/
          fi
        done
	ei1 "Done with architecture $i"; $spc
        ;;
      *) ei1 "Very well, bypassing architecture $i"; $spc
        ;;
    esac
  else
    echo "No binaries for $i found on the CDrom"; $spc
  fi
done
#                                       Done here.
cd ..
if [ $opt != 3 ] ; then
  rm -f INSTEP1
  ei1 "You may choose to run the install wizard at this time."
  ei1 "You can either use the CD version of the wizard,"
  ei1 "or you can check our web: http://www.aips.nrao.edu/"
  ei1 "to see if we have any fixes to install.pl."
  ei1 "Enter YES if you want to stop now and check for fixes,"
  ei1 "Or enter NO to use the CD version (or local disk copy in `pwd`)"
  ni1 "Stop now (y)? "; read yn; [ "$yn" = "" ] && yn=y
  case $yn in
    Y*|y*)
      ei1 "Very well, go check, and when you have install.pl or"
      ei1 "update.pl in this area (`pwd`),"
      ei1 "you should run it.  You might need to edit line 1 of"
      ei1 "the .pl script so it knows where you have perl here."
      ei1 "Good luck and goodbye...."
      ;;
    *)
      if [ -f install.pl ] ; then
         ei1 "There is already an install.pl in `pwd`, using it."
      else
         ln -s $vers/SYSTEM/UNIX/PERL/install.pl
      fi
      ei1 "About to run perl on install.pl; this will clear the"
      ni1 "screen and start the menu-based wizard.  Press ENTER: "
      read yn
      AIPSCDROM=YES; export AIPSCDROM
      perl ./install.pl -c
      ;;
  esac
 else
  echo "The conversion should now be complete."
fi