#!/bin/sh
# $Id$
# Create the .iso image(s) for TeX Live.
# 
# Copyright 2007-2016 Karl Berry.
# Copyright 2003, 2004, 2005 Sebastian Rahtz.
#
# This file is licensed under the GNU General Public License version 2
# or any later version.
#
# Send bug reports or suggestions to tex-live@tug.org.
# Historical notes at the end of the script.

NAME=texlive
V=2016
D=`date +%Y%m%d`
target=/home/ftp/texlive/Images/test

renice +19 -p $$ >/dev/null 2>&1
umask 0
unset CDPATH  # avoid output from cd
XZ_OPT=-6; export XZ_OPT # compression level, -9 for slowest-but-most,
                         # which is not worth the time.

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

debug=${OVERRIDE_DEBUG-false}
mkisofs="xorriso -read_mkisofsrc -as mkisofs"   # mkisofs
makeinst=true
maketar=true
tar_all=true
tar_bin_only=false
tar_devsource_only=false
tar_extra_only=false
tar_source_only=false
quiet=  # for passing to 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/.*=//'`;;
  --noinst)    makeinst=false;;
  --notar)     maketar=false;;
  --quiet)     quiet=-quiet;;
  --target=*)  target=`echo $1 | sed 's/.*=//'`;;
  --tar-bin-only)       tar_all=false; makeinst=false; tar_bin_only=true;;
  --tar-devsource-only) tar_all=false; makeinst=false;tar_devsource_only=true;;
  --tar-extra-only)     tar_all=false; makeinst=false; tar_extra_only=true;;
  --tar-source-only)    tar_all=false; makeinst=false; tar_source_only=true;;
  --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 -x .svn"

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

  # remove old images and checksums.
  rm -f $prefix-*.iso* $prefix-*.md5 $prefix-*.sha256 $prefix-*.sha512

  # the image consists of the tlnet tree and the top-level files
  # from master, more or less.
  imgdir=${prefix}imgtmp
  rm -rf $imgdir
  mkdir $imgdir
  
  # files and a few dirs from master.
  cp -p $master/.mkisofsrc $imgdir || exit 1    # mkisofs control
  cp -p $master/* $imgdir 2>/dev/null           # intentionally skip dirs
  cp -pr $master/readme* $master/source $imgdir # but do these few dirs
  
  # included preformatted doc in new dir for the DVD.
  mkdir $imgdir/texlive-doc
  (cd $master/texmf-dist/doc/texlive && tar cf - \
     index.html */*.html */*.pdf */*.png \
   | (cd $imgdir/texlive-doc && tar xf -))
  
  # files from tlnet.
  cd /home/ftp/texlive/tlpretest
  if $debug; then
    echo "source = `pwd`"
  fi
  cp -pr install-tl *.bat tlpkg archive $imgdir
  
  # remove some platforms to save space on the dvd.
  # do this here so that they can be kept in the tree,
  # and thus installed normally over the net.
  # keep in sync with info on http://tug.org/texlive/doc.html.
  prune="alpha-linux armel-linux armhf-linux mipsel-linux powerpc-linux"
  echo "-- pruning platforms $prune..."
  mkdir $imgdir/tlpkg/bin
  cp $mydir/tl-prune-platforms $imgdir/tlpkg/bin
  $imgdir/tlpkg/bin/tl-prune-platforms $prune >/tmp/imgprune

  # some files we don't want in the image after all.
  rm -rf $imgdir/doc.html $imgdir/tlpkg/texlive.tlpdb.xz $imgdir/tlpkg/bin

  # the actual iso build.
  cd $imgdir || exit 1
  cmd="$mkisofs $common_mkisofs_options -o $iso ."
  echo "-- `date` with: $cmd"
  $cmd
  if test $? -ne 0; then
    echo "$0: $mkisofs failed (status $?), goodbye." >&2
    exit $?
  fi
  chmod a+rw $iso
  
  rm -rf $imgdir

  # make checksums
  # and symlinks with short names (potentially used in /etc/fstab).
  for ext in ""; do  # used to do .xz here too
    rm -f $prefix.iso$ext $prefix.iso$ext.md5 $prefix.iso$ext.sha256 $prefix.iso$ext.sha512
    
    (cd $target && md5sum `basename $iso$ext`) >$iso$ext.md5
    (cd $target && sha512sum `basename $iso$ext`) >$iso$ext.sha512
    (cd $target && rm -f $iso$ext.sha512.asc)
    (cd $target && $master/tlpkg/bin/tl-sign-file $iso$ext.sha512)

    ln -s `basename $iso$ext` $prefix.iso$ext
    
    # for md5 and sha512, have to adjust the filename embedded in the file.
    sed s,-$D,, $iso$ext.md5 >$prefix.iso$ext.md5
    sed s,-$D,, $iso$ext.sha512 >$prefix.iso$ext.sha512
    #ln -s `basename $iso`$ext.md5 $prefix.iso$ext.md5
    #ln -s `basename $iso`$ext.sha256 $prefix.iso$ext.sha256

    rm -f $prefix.iso$ext.sha512.asc
    $master/tlpkg/bin/tl-sign-file $prefix.iso$ext.sha512
    
    ls -l $iso$ext
  done
}


# 
# Make the tar files: the sources, the texmf trees, the binaries, the
# minor "extra" files.  Each should unpack into its directory name.  We
# use the GNU tar --transform option to avoid copying the whole
# hierarchy to a temp directory.  This auxiliary function takes that
# temp directory name as its first argument, and the files to archive as
# the rest.
# 
do_tar ()
{
  name=$1; shift
  #
  if false; then # ddebug
    verbose="-v --show-transformed-names"
  else
    verbose=
  fi
  #
  compress=--xz
  #
  excludes=--exclude-vcs  
  for e in bibtex epstopdf jfontmaps; do  # "upstream" sources
    excludes="$excludes --exclude=extra/$e"
  done
  #
  tar_common_opt="$verbose $compress $excludes"
  #
  tarfile=$target/$name.tar.xz
  tar -cf $tarfile --owner=0 --group=0 \
      --transform="s,^,$name/," $tar_common_opt \
      "$@"
  if test $? -ne 0; then
    echo "$0: tar failed, goodbye." >&2
  fi
  (cd $target && sha512sum `basename $tarfile`) >$tarfile.sha512
  (cd $target && rm -f $tarfile.sha512.asc)
  (cd $target && $master/tlpkg/bin/tl-sign-file $tarfile.sha512)

  ls -l $tarfile
}

MAKETAR ()
{
  echo
  echo "-- `date` Writing tars to $target"

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

  # make tar files using the contents of the tree we are running out of.
  if $tar_extra_only || $tar_all; then
    cd $master || exit 1
    do_tar $NAME-$D-extra \
         LICENSE* README* autorun.inf *.html install* re* tl-* \
         tlpkg/TeXLive tlpkg/translations tlpkg/tlpostcode
    $tar_extra_only && return  # for debugging
  fi
  
  # compiled binaries.
  if $tar_bin_only || $tar_all; then
    cd $master/bin || exit 1
    do_tar $NAME-$D-bin *
    $tar_bin_only && return
  fi
  
  # compilable sources.
  if $tar_source_only || $tar_all; then
    cd $master/../Build/source || exit 1
    do_tar $NAME-$D-source *
    $tar_source_only && return
  fi
  
  # development sources, which we record in the
  # 00texlive.image (fake) package; see its .tlpsrc.
  if $tar_devsource_only || $tar_all; then
    cd $master || exit 1
    do_tar $NAME-$D-devsource `$mydir/tlpfiles 00texlive.image`
    $tar_devsource_only && return
  fi

  # the big tree; must have $tar_all if we get here.
  cd $master || exit 1
  do_tar $NAME-$D-texmf texmf*
}


#  main program.

# Add our exact version to the release file.  Ensure a line of its own,
# although a blank line should already be there.
rm -f /tmp/tluirt.txt
cp $master/release-texlive.txt /tmp/tluirt.txt
printf "\ntexlive-$D\n" >>$master/release-texlive.txt

$makeinst && MAKEINST
$maketar && MAKETAR

# Undo the version without using svn, in case it's been relocked.
cp /tmp/tluirt.txt $master/release-texlive.txt

exit 0

# Until 2010, we also produced:
# live: full live distribution which can be run as is (CD/DVD)
# but this was dropped in 2010.  TeX Live is no longer live.  Oh well.
#
# From 2004-2007, we produced:
# inst: compressed zip files and installer only (CD)
# but this was dropped in 2008, and restored in a different form in 2010
# for DVD.
# 
# In 2003, we produced:
# demo: live subset which can be run as is (CD)
# but this was dropped in 2004.