#!/usr/bin/perl -w

############################################################################
#
# Copyright (C) 2016 The Qt Company Ltd.
# Contact: https://www.qt.io/licensing/
#
# This file is part of Qt Creator.
#
# Commercial License Usage
# Licensees holding valid commercial Qt licenses may use this file in
# accordance with the commercial license agreement provided with the
# Software or, alternatively, in accordance with the terms contained in
# a written agreement between you and The Qt Company. For licensing terms
# and conditions see https://www.qt.io/terms-conditions. For further
# information use the contact form at https://www.qt.io/contact-us.
#
# GNU General Public License Usage
# Alternatively, this file may be used under the terms of the GNU
# General Public License version 3 as published by the Free Software
# Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
# included in the packaging of this file. Please review the following
# information to ensure the GNU General Public License requirements will
# be met: https://www.gnu.org/licenses/gpl-3.0.html.
#
############################################################################

# Report possible problems with copy right headers
#
# Sample usage:
#     find . -type f | xargs ./scripts/hasCopyright.pl

use strict;

shift; # remove script

sub canIgnoreNoCopyright {
    my $file = shift;
    return 1 if ($file =~ /\.png$/ or
        $file =~ /\.ico$/ or
        $file =~ /\.svg$/ or
        $file =~ /\.xpm$/ or
        $file =~ /\.dia$/ or
        $file =~ /\/Doxyfile$/ or
        $file =~ /\.qmlproject$/ or
        $file =~ /\.pr[oi]$/ or
        $file =~ /\.qbs$/ or
        $file =~ /\.qrc$/ or
        $file =~ /\.txt$/i or
        $file =~ /\/README[^\/]*$/i or
        $file =~ /\/LICENSE.LGPLv21$/i or
        $file =~ /\/LICENSE.LGPLv3$/i or
        $file =~ /\.ui$/i or
        $file =~ /\.xml$/ or
        $file =~ /\.css$/ or
        $file =~ /\.metainfo$/ or
        $file =~ /\.json$/ or
        $file =~ /\.pl$/ or
        $file =~ /\.py$/ or
        $file =~ /\.sh$/ or
        $file =~ /\.bat$/ or
        $file =~ /\.patch$/ or
        $file =~ /\.sed$/ or
        $file =~ /\.pro\.user$/ or
        $file =~ /\.plist$/ or
        $file =~ /\.qdocconf$/i or
        $file =~ /\.qdocinc/);
    return 0;
}

while (1) {
    my $file = shift;
    last unless $file;

    my $hasCopyright = 0;
    my $hasCurrent = 0;
    my $hasContact = 0;
    my $hasCommercial = 0;
    my $hasLGPL = 0;
    my $hasGPL = 0;
    my $hasCompany = 0;
    my $linecount = 0;

    if ($file !~ /\.png$/) {
        open(my $fh, "<", $file) or die "Could not open $file.\n";

        while (<$fh>) {
            $linecount++;
            last if ($linecount > 50);

            $hasCopyright = 1 if $_ =~ /Copyright/i;
            $hasCurrent = 1 if $_ =~ /\(c\).*\s2015/i;

            $hasContact = 1 if $_ =~ /Contact: http:\/\/www.qt-project.org\/legal/;
            $hasCommercial = 1 if $_ =~ /Commercial (License )?Usage/;
            $hasCompany = 1 if $_ =~ /The Qt Company Ltd/;
            $hasLGPL = 1 if $_ =~ /GNU Lesser General Public License Usage/;
            $hasGPL = 1 if $_ =~ /GNU General Public License Usage/;
        }
        close $fh;
    }

    unless ($hasCopyright) {
        print "$file\t";
        if (canIgnoreNoCopyright($file)) {
            print "Warning\t";
        } else {
            print "ERROR\t";
        }
        print "No copyright\n";
        next;
    }

    unless ($hasCurrent) {
        print "$file\tERROR\tcopyright outdated\n";
        next;
    }

    unless ($hasCompany) {
        print "$file\tERROR\tNo The Qt Company\n";
        next;
    }

    if (!$hasContact && $file !~ /\.json\.in$/) {
        print "$file\tERROR\tWrong contact\n";
        next;
    }

    unless ($hasCommercial) {
        print "$file\tERROR\tNo commercial license\n";
        next;
    }

    unless ($hasLGPL) {
        print "$file\tERROR\tNo LGPL license\n";
        next;
    }

    if ($hasGPL) {
        print "$file\tERROR\tHas GPL license\n";
        next;
    }

    print "$file\tinfo\tCopyright OK\n";

} # loop over files

exit 0;