#! /usr/bin/perl -w
#
# This file is part of DisOrder.
# Copyright (C) 2005, 2006 Richard Kettlewell
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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.
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
#

use strict;

my $year;
my %checked = ();
my %removed = ();
my $prefix = -e ".src" ? ".src/" : "";
my $what = "";
my $original;
my @exceptions;
my %exceptions;
my %missing = ();

open(F, "<${prefix}scripts/copyright.exceptions") or die "$0: scripts/copyright.exceptions: $!";
chomp(@exceptions = <F>);
%exceptions = map(($_, 1), grep !/^\#/, @exceptions);

opendir(D, "${prefix}ChangeLog.d") or die "$0: ChangeLog.d: $!\n";
for my $dir (readdir D) {
    next if $dir =~ /cvs/;
    open(C, "<${prefix}ChangeLog.d/$dir") or die "$0: ChangeLog.d/$dir: $!\n";
    while(defined($_ = <C>)) {
	if(/^(\d{4})-\d{2}-\d{2}/) {
	    $year = $1;
	}
	if(/^\s+(modified|removed|renamed) files:$/) {
	    $what = $1;
	    next;
	}
	if(/^\s*$/) {
	    $what = "";
	}
	if($what eq 'modified') {
	    my @files = split(/\s+/, $_);
	    for my $file (@files) {
		next if exists $checked{"$file-$year"};
		next if $file =~ /^ChangeLog\.d/;
		next if ! -e "$prefix$file";
		open(INPUT, "<$prefix$file") or die "$0: $prefix$file: $!\n";
		my $good = 0;
		while(defined(my $line = <INPUT>)) {
		    if($line =~ /Copyright.*$year/i) {
			$good = 1;
			last;
		    }
		}
		close INPUT;
		$checked{"$file-$year"} = $good;
		$missing{"$file: missing $year"} = 1
		    if !$good && !exists $exceptions{$file};
	    }
	}
    }
}

print map("$_\n", sort keys %missing);