#!/usr/bin/perl


# BEGIN BPS TAGGED BLOCK {{{
# COPYRIGHT:
# 
# This software is Copyright (c) 2003-2008 Best Practical Solutions, LLC
#                                          <clkao@bestpractical.com>
# 
# (Except where explicitly superseded by other copyright notices)
# 
# 
# LICENSE:
# 
# 
# This program is free software; you can redistribute it and/or
# modify it under the terms of either:
# 
#   a) Version 2 of the GNU General Public License.  You should have
#      received a copy of the GNU General Public License along with this
#      program.  If not, write to the Free Software Foundation, Inc., 51
#      Franklin Street, Fifth Floor, Boston, MA 02110-1301 or visit
#      their web page on the internet at
#      http://www.gnu.org/copyleft/gpl.html.
# 
#   b) Version 1 of Perl's "Artistic License".  You should have received
#      a copy of the Artistic License with this package, in the file
#      named "ARTISTIC".  The license is also available at
#      http://opensource.org/licenses/artistic-license.php.
# 
# This work is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
# 
# CONTRIBUTION SUBMISSION POLICY:
# 
# (The following paragraph is not intended to limit the rights granted
# to you to modify and distribute this software under the terms of the
# GNU General Public License and is only of importance to you if you
# choose to contribute your changes and enhancements to the community
# by submitting them to Best Practical Solutions, LLC.)
# 
# By intentionally submitting any modifications, corrections or
# derivatives to this work, or any other work intended for use with SVK,
# to Best Practical Solutions, LLC, you confirm that you are the
# copyright holder for those contributions and you grant Best Practical
# Solutions, LLC a nonexclusive, worldwide, irrevocable, royalty-free,
# perpetual, license to use, copy, create derivative works based on
# those contributions, and sublicense and distribute those contributions
# and any derivatives thereof.
# 
# END BPS TAGGED BLOCK }}}
my $LICENSE  = <<'EOL';
COPYRIGHT:

This software is Copyright (c) 2003-2008 Best Practical Solutions, LLC
                                         <clkao@bestpractical.com>

(Except where explicitly superseded by other copyright notices)


LICENSE:


This program is free software; you can redistribute it and/or
modify it under the terms of either:

  a) Version 2 of the GNU General Public License.  You should have
     received a copy of the GNU General Public License along with this
     program.  If not, write to the Free Software Foundation, Inc., 51
     Franklin Street, Fifth Floor, Boston, MA 02110-1301 or visit
     their web page on the internet at
     http://www.gnu.org/copyleft/gpl.html.

  b) Version 1 of Perl's "Artistic License".  You should have received
     a copy of the Artistic License with this package, in the file
     named "ARTISTIC".  The license is also available at
     http://opensource.org/licenses/artistic-license.php.

This work is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

CONTRIBUTION SUBMISSION POLICY:

(The following paragraph is not intended to limit the rights granted
to you to modify and distribute this software under the terms of the
GNU General Public License and is only of importance to you if you
choose to contribute your changes and enhancements to the community
by submitting them to Best Practical Solutions, LLC.)

By intentionally submitting any modifications, corrections or
derivatives to this work, or any other work intended for use with SVK,
to Best Practical Solutions, LLC, you confirm that you are the
copyright holder for those contributions and you grant Best Practical
Solutions, LLC a nonexclusive, worldwide, irrevocable, royalty-free,
perpetual, license to use, copy, create derivative works based on
those contributions, and sublicense and distribute those contributions
and any derivatives thereof.

EOL

use File::Find;

my @MAKE = qw(Makefile);

File::Find::find({ no_chdir => 1, wanted => \&tag_pm}, 'lib');
File::Find::find({ no_chdir => 1, wanted => \&tag_script}, 'bin');
$_ = 'utils/license_tag' ; tag_script(); # sigh
tag_makefile ('Makefile.PL');
tag_makefile ('README');

sub tag_makefile {
    my $pm = shift;
    open( FILE, "<$pm" ) || die "Failed to open $pm";
    my $file = ( join "", <FILE> );
    close(FILE);
    my $pmlic = $LICENSE;
    $pmlic =~ s/^/# /mg;

    print "$pm - ";
    if ( $file =~ /^# BEGIN BPS TAGGED BLOCK {{{/ms ) {
        print "has license section";
        $file
            =~ s/^# BEGIN BPS TAGGED BLOCK {{{(.*?)# END BPS TAGGED BLOCK }}}/# BEGIN BPS TAGGED BLOCK {{{\n$pmlic# END BPS TAGGED BLOCK }}}/ms;

    } else {
        print "no license section";
        $file
            = "# BEGIN BPS TAGGED BLOCK {{{\n$pmlic# END BPS TAGGED BLOCK }}}\n"
            . $file;
    }
    $file
        =~ s/# END BPS TAGGED BLOCK }}}(\n+)/# END BPS TAGGED BLOCK }}}\n/mg;
    print "\n";

    open( FILE, ">$pm" ) || die "couldn't write new file";
    print FILE $file;
    close FILE;

}

sub tag_pm {
    my $pm = $_;
    next unless $pm =~ /\.(pm|pod|po)$/s;
    open( FILE, "<$pm" ) || die "Failed to open $pm";
    my $file = ( join "", <FILE> );
    close(FILE);
    my $pmlic = $LICENSE;
    $pmlic =~ s/^/# /mg;

    print "$pm - ";
    if ( $file =~ /^# BEGIN BPS TAGGED BLOCK {{{/ms ) {
        print "has license section";
        $file
            =~ s/^# BEGIN BPS TAGGED BLOCK {{{(.*?)# END BPS TAGGED BLOCK }}}/# BEGIN BPS TAGGED BLOCK {{{\n$pmlic# END BPS TAGGED BLOCK }}}/ms;

    } else {
        print "no license section";
        $file
            = "# BEGIN BPS TAGGED BLOCK {{{\n$pmlic# END BPS TAGGED BLOCK }}}\n"
            . $file;
    }
    $file
        =~ s/# END BPS TAGGED BLOCK }}}(\n+)/# END BPS TAGGED BLOCK }}}\n/mg;
    print "\n";

    open( FILE, ">$pm" ) || die "couldn't write new file $pm";
    print FILE $file;
    close FILE;

}

sub tag_script {
    my $pm = $_;
    return unless ( -f $pm );
    open( FILE, "<$pm" ) || die "Failed to open $pm";
    my $file = ( join "", <FILE> );
    close(FILE);
    my $pmlic = $LICENSE;
    $pmlic =~ s/^/# /msg;

    print "$pm - ";
    if ( $file =~ /^# BEGIN BPS TAGGED BLOCK {{{/ms ) {
        print "has license section";
        $file
            =~ s/^# BEGIN BPS TAGGED BLOCK {{{(.*?)# END BPS TAGGED BLOCK }}}/# BEGIN BPS TAGGED BLOCK {{{\n$pmlic# END BPS TAGGED BLOCK }}}/ms;

    } else {
        print "no license section";
        if ( $file =~ /^(#!.*?)\n/ ) {

            my $lic
                = "# BEGIN BPS TAGGED BLOCK {{{\n$pmlic# END BPS TAGGED BLOCK }}}\n";
            $file =~ s/^(#!.*?)\n/$1\n$lic/;

        }
    }
    $file
        =~ s/# END BPS TAGGED BLOCK }}}(\n+)/# END BPS TAGGED BLOCK }}}\n/mg;
    print "\n";

    open( FILE, ">$pm" ) || die "couldn't write new file";
    print FILE $file;
    close FILE;

}