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#!/bin/sh -e
# Copyright 2008 Norbert Preining
# This file is licensed under the GNU General Public License version 2
# or any later version.
# 
# Update a TeX Live tlnet distribution, with testing.
#
# TODO:
# - only remove the old tlnet and move the newly one to the old place in case
#   that actually something has changed. OTOH we have to check the output
#   of tl-update-containers (is that trustworthy?), OTOH the install packages
#   size (md5sums?)
# - other tests with the installed system?
# - help msg.

vc_id='$Id$'
unset CDPATH
unset LS_COLORS

chicken=false

while test $# -gt 0; do
  case $1 in
  --dry-run|-n) chicken=true;;
  --master) shift; Master=$1;;
  --testlocation) shift; tlwebtrybase=$1;;
  --help) echo "xxtodo. Sorry."; exit 0;;
  --version) echo "$vc_id"; exit 0;;
  --*) echo "$0: unrecognized option \`$1'." >&2
       exit 1;;
  *) tlweb=$1;;
  esac
  shift
done

test -z "$tlweb" && tlweb=/home/ftp/texlive/tlnet/2008
if test -z "$Master"; then
  mydir=`dirname $0`
  Master=`cd $mydir/../.. && pwd`
fi

if test ! -r "$tlweb/tlpkg/texlive.tlpdb"; then
  echo "$0: no tlpdb in $tlweb/tlpkg, goodbye." >&2
  exit 1
fi
test -z "$tlwebtrybase" \
&& tlwebtrybase=`cd $tlweb/../.. && pwd`/tlnet-trial-`date +%y%m%d`

tlwebtry=$tlwebtrybase/tlsrc.try

echo "$0: using tlweb=$tlweb"
echo "$0: using tlwebtry=$tlwebtry"

# 
# Be sure we're starting the test cleanly.
rm -rf $tlwebtrybase
mkdir -p $tlwebtry
cp -al $tlweb/* $tlwebtry  # assuming GNU cp

echo "$0: Updating $tlwebtry in cow-shell..."
cd $tlwebtry
cow-shell <<EOF
echo "$0: Running tl-update-containers..."
$Master/tlpkg/bin/tl-update-containers -location $tlwebtry
echo "$0: Running tl-update-install-pkg..."
$Master/tlpkg/bin/tl-update-install-pkg -o $tlwebtry
EOF

# Now we have an updated tlweb in $tlwebtry where only the changed files
# are actual files, the rest are hard links.
# Try to make a test installation.

cd $tlwebtrybase
tlwebtryinst=$tlwebtrybase/tlinst.try
yyyy=2008

zcat $tlwebtry/install-tl-unx.tar.gz | tar -xf -
cd install-tl
# create profile:
echo "# texlive-profile from $0
selected_scheme scheme-full
TEXDIR $tlwebtryinst/$yyyy
TEXDIRW $tlwebtryinst/$yyyy
TEXMFSYSCONFIG $tlwebtryinst/$yyyy/texmf-config
TEXMFSYSVAR $tlwebtryinst/$yyyy/texmf-var
TEXMFLOCAL $tlwebtryinst/texmf-local
TEXMFHOME ~/texmf
option_doc 1
option_fmt 1
option_letter 0
option_src 1
option_symlinks 0
" >texlive.profile

echo "$0: Running test install (log: `pwd`/install.log)..."
perl install-tl -location $tlwebtry -profile texlive.profile >install.log 2>&1\
|| true # install-tl can fail, but we test the output!!

# the following long grep command should filter away all *normal*
# installation messages.
# if there are any other messages they will end up on stdout and 
# thus be noticed.
unexpected_output=`cat install.log \
  | grep -Ev '^Automated TeX Live installation using profile' \
  | grep -Ev '^Platform: ' \
  | grep -Ev '^Distribution: inst' \
  | grep -Ev '^Directory for temporary files' \
  | grep -Ev '^Installer directory:' \
  | grep -Ev '^Loading ' \
  | grep -Ev '^Installing: ' \
  | grep -Ev '^(re-)?running mktexlsr' \
  | grep -Ev '^mktexlsr: Updating ' \
  | grep -Ev '^mktexlsr: Done' \
  | grep -Ev '^writing fmtutil.cnf data to' \
  | grep -Ev '^writing updmap.cfg to' \
  | grep -Ev '^writing language.(dat|def) data to' \
  | grep -Ev '^running updmap-sys' \
  | grep -Ev '^pre-generating all format file' \
  | grep -Ev 'running post install action for' \
  | grep -Ev '^ See \./index.html for links to documentati' \
  | grep -Ev '^ (http://tug.org/texlive/) contains any upda' \
  | grep -Ev '^ TeX Live is a joint project of the TeX user groups' \
  | grep -Ev '^ please consider supporting it by joining the group b' \
  | grep -Ev '^ list of groups is available on the web at' \
  | grep -Ev '^ Add ' \
  | grep -Ev '^ Most importantly, add ' \
  | grep -Ev '^ to your PATH for current and future sessions' \
  | grep -Ev '^ Welcome to TeX Live' \
  | grep -Ev 'install-tl: done' \
  | grep -Ev '^Logfile: ' \
  | cat`

if test -z "$unexpected_output"; then
  # no unexpected output, so ship the new packages.
  cd $tlwebtrybase
  if $chicken; then
    echo "$0: Chicken mode, not updating anything."
  else
    rm -rf $tlweb
    mv $tlwebtry $tlweb
    echo "$0: Updated, removing test installation in $tlwebtrybase."
    rm -rf $tlwebtrybase
    echo "$0: Done."
  fi
  exit 0
else
  echo "$0: Test installation failed, not removing anything!" >&2
  echo "$0: Here is the unexpected output:" >&2
  echo "$unexpected_output" >&2
  echo
  echo "$0: Full transcript file: `pwd`/install.log" >&2
  echo "$0: install-tl's complete log file: $tlwebtryinst/$yyyy/install-tl.log" >&2
  exit 1
fi