#!/usr/bin/env perl
# $Id$
#
# Copyright 2008, 2009 Reinhard Kotucha, Norbert Preining, Karl Berry
# This file is licensed under the GNU General Public License version 2
# or any later version.

# This script creates the zip (everything) and tgz (omits windows)
# archives to do a network install.  Invoked from tl-update-tlnet.

BEGIN {
  $^W = 1;
  my $me=$0;
  $thisdir=`pwd`;
  chomp ($thisdir);
  if ($me=~m!/!) {
    ($::installerdir=$me)=~s!(.*)/.*$!$1/../..!;
  } else {
    $::installerdir='../..';
  }
  chdir($installerdir) || die "$0: chdir($installerdir) failed: $!";
  $installerdir=`pwd`;
  chomp ($installerdir);
  unshift (@INC, "$::installerdir/tlpkg");
  #
  $ENV{"PATH"} = "/usr/local/gnu/bin:$ENV{PATH}";  # for sha256sum
}

use Cwd qw(abs_path);
use Getopt::Long;
$Getopt::Long::autoabbrev=0;

use TeXLive::TLPDB;
use TeXLive::TLPOBJ;
use TeXLive::TLUtils qw(:DEFAULT mkdirhier copy get_system_tmpdir);

$opt_help = 0;
$opt_verbose = 0;
$opt_texlivedocs = 0;

sub usage
{
  print <<'EOF';
Usage: $0 [-h|--help] [-v|--verbose] -o|--outputdir=DIR

Generate a .tar.gz file for Unix and a .zip file for all systems
containing all the files needed to install TeX Live from the network.
An existing directory must be specified as the output location.

Options:
  -h, --help        Print this message and exit.
  -t, --texlivedocs Include the pdf and html versions of the texlive guide
  -o, --outputdir   Target directory. Must exist and be writable.
  -v, --verbose     Extra messages.
EOF
;
  exit 0;
}

usage if (@ARGV<1);

TeXLive::TLUtils::process_logging_options();
GetOptions(
  "outputdir|o=s",
  "texlivedocs|t",
  "verbose|v",
  "help|h") or usage;

usage if $opt_help;
die "$0: extra argument(s) @ARGV; try --help if you need it.\n" if @ARGV;

# determine directories.
my $sys_tmp=get_system_tmpdir or die "no system TMPDIR found"; 
my $tmpdir="$sys_tmp/install-tl-$$";
my $inst_tmp="$sys_tmp/install-tl-$$/install-tl";

die "$0: the output directory must be specified; try --help if you need it.\n"
  if ! $opt_outputdir;
my $outputdir = $opt_outputdir;

my @signals = qw(HUP INT ILL FPE SEGV TERM ABRT QUIT BUS PIPE);

sub cleanup {
  if (-d "$tmpdir") {
    system('rm', '-rf', "$tmpdir");
  }
}

foreach my $signal (@signals) {
  $SIG{"$signal"}=\&cleanup;
}

# create directories.

die "$tmpdir already exists" if -d $tmpdir;

mkdir "$tmpdir" or die "Can't mkdir \"$tmpdir\".\n";
mkdir "$inst_tmp" or die "Can't mkdir \"$inst_tmp\".\n";

if ($opt_verbose) {
  info("thisdir:      \"$thisdir\"\n");
  info("installerdir: \"$installerdir\"\n");
  info("sys_tmp:      \"$sys_tmp\"\n");
  info("tmpdir:       \"$tmpdir\"\n");
  info("inst_tmp:     \"$inst_tmp\"\n");
  info("outputdir:    \"$outputdir\"\n");
}

die "$0: Output directory does not exist: $outputdir.\n" unless -e $outputdir;
die "$0: $outputdir not a directory.\n" unless -d $outputdir;
die "$0: Output directory not writable: $outputdir.\n" unless -w $outputdir;

# read TLPDB and extract files

my $tlpdb = TeXLive::TLPDB->new ("root" => $installerdir);
die "$0: Cannot find tlpdb in $installerdir.\n" unless defined $tlpdb;
my $tlp = $tlpdb->get_package("00texlive.installer");
die "$0: no 00texlive.installer in ${installerdir}'s texlive.tlpdb" 
  unless defined $tlp;

my $tlpinfra = $tlpdb->get_package("texlive.infra");
die "$0: no texlive.infra in ${installerdir}'s texlive.tlpdb"
  unless defined $tlpinfra;

my @unix = ();
push @unix, $tlp->runfiles;
push @unix, grep(!/^texmf\//, $tlpinfra->runfiles);
push @unix, $tlp->docfiles;

# add the texlive-XX docs in pdf and html format if the option is given.
# 
if ($opt_texlivedocs) {
  foreach my $p (qw(texlive-en texlive-de texlive-fr texlive-cz
                    texlive-pl texlive-ru texlive-zh-cn)) {
    my $tlpdocs = $tlpdb->get_package($p);
    if (!defined $tlpdocs) {
      warn "Cannot find package $p in tlpdb";
      next;
    }
    push (@unix, $tlpdocs->docfiles);
  }
}
my %tlpbin = %{$tlp->binfiles};
foreach my $a (keys %tlpbin) {
  next if ($a =~ m/win32/);
  push (@unix, @{$tlpbin{$a}});
}
my @win32 = ();
push (@win32, @unix);
if (defined $tlpbin{"win32"}) {
  push (@win32, @{$tlpbin{"win32"}});
}


# main.
copy_files (@unix);
make_zip ('tgz');

copy_files (@win32);
make_zip ('zip');

install_files ();

cleanup ();



# copy files from the repository to tmpdir.
#
sub copy_files
{
  my ($dir, $file);
  for (@_) {
    if ($_ !~ m!/!) {
      # file in the root, missing ./
      $_ = "./$_";
    }
    ($dir, $file) = /^(.*)\/(.*)/;
    mkdirhier ("$inst_tmp/$dir");
    copy ($_, "$inst_tmp/$dir");
  }
}


# create the .tar.gz and the .zip files.
#
sub make_zip
{
  my ($type) = @_;
  info ("$0: Making $type...\n");

  chdir ($tmpdir) || die "chdir($tmpdir) failed: $!";
  if ($type eq 'zip') {
    system ('zip', '-rq', 'install-tl.zip', 'install-tl'); 
  } else {
    system ('tar', '-czf', 'install-tl-unx.tar.gz', 'install-tl'); 
  }
  chdir ($installerdir) || die "chdir($installerdir) failed: $!";
}


# copy generated files to outputdir,
#
sub install_files
{
  $outputdir = abs_path ($outputdir);
  info ("$0: Installing to $outputdir\n");
  for my $f ("install-tl-unx.tar.gz", "install-tl.zip") {
    copy ("$tmpdir/$f", $outputdir);
    system ("cd $outputdir && sha256sum $f >$f.sha256");
    system ('ls', '-l', "$outputdir/$f");
  }

  # create unpacked installer that can run in that directory,
  # for the sake of people mirroring.
  # We'd like to specify exactly what we want to unpack,
  # but unzip doesn't support recursively unpacking a directory,
  # and it's too painful to specify all the (many dozens of) files.
  # So unpack directly in the real dir.  Scary.
  # Since we're doing this in the trial directory created by tl-update-tlnet,
  # there are no existing files to save.
  xchdir ($outputdir);

  # unpack in a temp directory.
  my $junkdir = "junkdir";
  mkdir ($junkdir);
  xsystem ("cd $junkdir && unzip -q $outputdir/install-tl.zip");
  
  # move what we want (corresponds to the mv into savedir) and erase the rest.
  -d "tlpkg" || mkdir ("tlpkg", 0777)
    || die "mkdir(tlpkg) failed in $outputdir: $!";
  xsystem ("mv $junkdir/install-tl/install-tl* .");
  xsystem ("rm -rf tlpkg/TeXLive tlpkg/installer tlpkg/tlperl tlpkg/translations");
  xsystem ("mv $junkdir/install-tl/tlpkg/* tlpkg/");
  xsystem ("rm -rf $junkdir");
}


### Local Variables:
### perl-indent-level: 2
### tab-width: 2
### indent-tabs-mode: nil
### End:
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