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#!/bin/sh -e
# $Id$
#
# Create the .iso file system images for TeX Live:
# a) live: the complete uncompressed system (for DVD)
# 
# Copyright 2003, 2004, 2005 Sebastian Rahtz.
# Copyright 2007, 2008 Karl Berry.
#
# This file is licensed under the GNU General Public License version 2
# or any later version.
#
# In 2003, we also produced:
# c) demo: live subset which can be run as is (CD)
# but this was dropped in 2004.
#
# From 2004-2007, we also produced:
# b) inst: compressed zip files and installer only (CD)
# but this was dropped in 2008.
#
# Send bug reports or suggestions to tex-live@tug.org.

unset CDPATH  # avoid output from cd
umask 0
renice +19 -p $$ >/dev/null 2>&1

mydir=`cd \`dirname $0\` && /bin/pwd`
cd $mydir || exit 1  # the Master/tlpkg/bin directory
master=`cd ../.. && /bin/pwd`
test -z "$master" && exit 1

NAME=texlive
V=2008
D=`date +%Y%m%d`

debug=${OVERRIDE_DEBUG-false}
target=/home/ftp/texlive/Images/test
quiet=  # for passing to mkisofs
makelive=true
maketar=true
mkisofs=mkisofs

while test $# -gt 0; do
  case $1 in
  --debug)     debug=true; quiet=;;
  --help)      echo "$0: No help, use the source, sorry."; exit 0;;
  --master=*)  master=`echo $1 | sed 's/.*=//'`;;
  --mkisofs=*) mkisofs=`echo $1 | sed 's/.*=//'`;;
  --nolive)    makelive=false;;
  --notar)     maketar=false;;
  --quiet)     quiet=-quiet;;
  --target=*)  target=`echo $1 | sed 's/.*=//'`;;
  --version)   echo "$0 for $NAME-$V ($D)"; exit 0;;  # who cares ...
  *) echo "$0: unknown option $1; try --help if you need it." >&2; exit 1;;
  esac
  shift
done

if $debug; then
  echo "master = $master"
  echo "target = $target"
fi
mkdir -p $target

# From the days when we made multiple images.  Keep it factored out in
# case they come back.
common_mkisofs_options=" $quiet -pad -J -dir-mode 0755 -r \
   -copyright LICENSE.TL \
   -x ./support/tests \
   -x .svn \
"

# 
MAKELIVE ()
{
  prefix=$target/$NAME$V # directory and prefix for our files within
  live_iso=$prefix-$D.iso
  echo "-- `date` Writing live image to $live_iso."

  # remove old images and checksums.
  rm -f $prefix-*.iso* $prefix-*.md5 $prefix-*.sha256

  # The Master directory is the image.
  (cd $master && mkisofs $common_mkisofs_options -o $live_iso .)

  # also make compressed version, helps people downloading test images.
  # this takes two hours or so, so write to a temp file and then rename.
  lzma -9 -v <$live_iso >$live_iso.lzma.part
  mv $live_iso.lzma.part $live_iso.lzma

  # make checksums
  # and symlinks with short names (potentially used in /etc/fstab).
  for ext in "" .lzma; do
    rm -f $prefix.iso$ext $prefix.iso$ext.md5 $prefix.iso$ext.sha256
    
    (cd $target && md5sum `basename $live_iso$ext`) >$live_iso$ext.md5
    (cd $target && sha256sum `basename $live_iso$ext`) >$live_iso$ext.sha256

    ln -s `basename $live_iso$ext` $prefix.iso$ext
    ln -s `basename $live_iso`$ext.md5 $prefix.iso$ext.md5
    ln -s `basename $live_iso`$ext.sha256 $prefix.iso$ext.sha256
    
    ls -l $live_iso$ext
  done
}


# 
# Make three tar files: the sources, the texmf trees, the binaries.
# Each should unpack into its directory name.  We use the GNU tar
# --transform option to avoid copying the whole hierarchy to temp
# directory.  This auxiliary function takes that name as its first
# argument, and the files to archive as the rest.
# 
do_tar ()
{
  if $debug; then
    verbose="-v --show-transformed-names"
  else
    verbose=
  fi
  compress=--lzma
  tar_common_opt="--exclude-vcs $compress $verbose"
  #
  name=$1
  shift
  tarfile=$target/$name.tar.lzma
  tar -cf "$tarfile" --owner=0 --group=0 \
      --transform="s,^,$name/," $tar_common_opt \
      "$@"
  (cd $target && sha256sum `basename $tarfile`) >$tarfile.sha256
  ls -l "$tarfile"
}

MAKETAR ()
{
  # remove old tarballs and checksums.
  rm -f $target/$NAME-*.tar.*

  cd $master
  do_tar $NAME-$D-extra LICENSE* README* *.html install* release* tl-portable*
  do_tar $NAME-$D-texmf texmf*

  cd $master/../Build/source
  do_tar $NAME-$D-source *

  cd $master/bin
  do_tar $NAME-$D-bin *
}


#  main program.

# Add our exact version to the release file.
printf "\ntexlive-$D\n" >>$master/release-texlive.txt

$maketar && MAKETAR
$makelive && MAKELIVE

# Undo the version.
svn revert $master/release-texlive.txt

exit 0