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#!/usr/bin/env perl
# $Id$
# Copyright 2007 Norbert Preining
# This file is licensed under the GNU General Public License version 2
# or any later version.
# 
# convert a set of tlpsrc files (given as arguments) into tlpdb

BEGIN {
  $^W = 1;
  chomp ($mydir = `dirname $0`);
  unshift (@INC, "$mydir/..");
}

use strict;

use TeXLive::TLPSRC;
use TeXLive::TLPOBJ;
use TeXLive::TLPDB;
use TeXLive::TLTREE;
use Getopt::Long;
use Pod::Usage;
use File::Path;

my $opt_all = 0;
my $opt_catalogue = "";
chomp (my $opt_master = `cd $::mydir/../.. && pwd`);
our $opt_debug = 0;
my $help = 0;

GetOptions(
    "all!" => \$opt_all,
    "master=s" => \$opt_master,	# location of the TL tree
    "catalogue=s" => \$opt_catalogue, # location of the TeX Catalogue
    "debug!", "help|?" => \$help) or pod2usage(1);

pod2usage(-exitstatus => 0, -verbose => 2) if $help;

exit (&main ());


sub main
{
  if (! -d $opt_master) {
    die "$0: Master $opt_master not a directory, goodbye.\n";
  }

  my $tlc = undef;
  if (! -d $opt_catalogue) {
    warn "$0: -c /Cat/a/logue not given, continuing without it.\n";
  } else {
    require TeXLive::TeXCatalogue;  # not at compile time, for now anyway.
    warn "$0: reading TeX Catalogue tree $opt_catalogue ...\n";
    $tlc = TeXLive::TeXCatalogue->new( "location" => $opt_catalogue );
  }

  # if we're regenerating the whole thing, get all our tlpsrc files.
  if ($opt_all) {
    my $tlpsrc_dir = "$opt_master/tlpkg/tlpsrc";
    chdir ($tlpsrc_dir) || die "chdir($tlpsrc_dir) failed: $!";
    @ARGV = glob ("*.tlpsrc");
  }
  
  warn "$0: reading Master tree $opt_master ...\n";
  my $tltree = TeXLive::TLTREE->new( "svnroot" => $opt_master );
  $tltree->init_from_svn;

  warn "$0: updating from tlpsrc ...\n";
  my $tldb = TeXLive::TLPDB->new;
  my $last = "";
  my $src_count = 0;
  foreach my $f (@ARGV) {
    if ($opt_all) { # progress report
      my $first = lc (substr ($f, 0, 1));
      if ($first ne $last) {
        print STDERR "$first ";
        $last = $first;
      }
      $src_count++;
    }
    my $tlsrc = new TeXLive::TLPSRC;
    $tlsrc->from_file ($f);
    my $tlp = $tlsrc->make_tlpobj ($tltree);

    if ($tlc) {
      # merge TeX Catalogue information
      $tlp->update_from_catalogue ($tlc);
    }
    
    $tldb->add_tlpobj ($tlp);
  }
  warn "\n";
  
  # write the new db, to the real location given --all, or stdout.
  if ($opt_all) {
    local *TLPDB;
    our $TLPDB = ">$opt_master/texlive.tlpdb";
    open (TLPDB) || die "open($TLPDB) failed: $!";
    $tldb->writeout (*TLPDB);
    warn "$0: wrote $src_count packages $TLPDB.\n";
  } else {
    $tldb->writeout;
  }
  
  return 0;
}

__END__

=head1 NAME

tlpsrc2tlpdb - generate a TeX Live database from tlpsrc files

=head1 SYNOPSIS

tlpsrc2tlpdb [OPTION]... [TLPSRC]...

=head1 OPTIONS

=over 8

=item B<-all>
Use all .tlpsrc files in C<Master/tlpkg/tlpsrc/*.tlpsrc>, and update the
live database in C<Master/texlive.tlpdb>.  (No repository operations are
done.)

=item B<-catalogue> I<Catalogue_dir>
The location given by B<-catalogue> must point to a valid TeX Catalogue.
No default value. If given, the generated tlpobj files will contain information
gathered from the TeX Catalogue.

=item B<-master> I<Master_dir>
The location given by B<-master> must point to a valid svn repository
of TeX Live's Master direcory.  Defaults to C<../..> of C<$0>.

=back

The standard options C<-help> and C<-debug> are also accepted.
See the tlpfiles documentation for details.

=head1 DESCRIPTION

B<tlpsrc2tlpdb> converts TeX Live source package files (tlpsrc) files into a
TeX Live package database (tlpdb)

If a TeX Catalogue hierarchy is specified, additional information from
the catalogue are merged into the database (see L<TeXLive::TLPOBJ> for
the list of included information from the TeX Catalogue).

=head1 AUTHORS AND COPYRIGHT

This script and its documentation were written for the TeX Live
distribution (L<http://tug.org/texlive>) and both are licensed under the
GNU General Public License Version 2 or later.

=cut

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