#!/usr/bin/env perl

#   Copyright (c) MediaTek USA Inc., 2021-2023
#
#   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, see
#   <http://www.gnu.org/licenses/>.
#
# criteria
#
#   This script is used as a genhtml "--criteria-script criteria" callback.
#   It is called by genhtml at each level of hierarchy - but ignores all but
#   the top level, and looks only at line coverage.
#
#   Format of the JSON input is:
#     {"line":{"found":10,"hit:2,"UNC":2,..},"function":{...},"branch":{}"
#   Only non-zero elements are included.
#   See the 'criteria-script' section in "man genhtml" for details.
#
#   The coverage criteria implemented here is "UNC + LBC + UIC == 0"
#   If the criterial is violated, then this script emits a single line message
#   to stdout and returns a non-zero exit code.
#
#   If passed the "--suppress" flag, this script will exit with status 0,
#   even if the coverage criteria is not met.
#     genhtml --criteria-script 'path/criteria --signoff' ....
#
#   It is not hard to envision much more complicated coverage criteria.

use strict;
use Getopt::Long;
use lib "/usr/share/lcov/support-scripts";
use criteria qw(new);

use lib "/usr/lib/lcov";
use lib "/usr/lib/lcov";    # path from 'support-scripts'

use lcovutil;

my $obj = criteria->new($0, @ARGV);

my $signoff;
if (!defined($obj) ||
    !GetOptions('signoff' => \$signoff)) {
    print(STDERR "usage: name type json-string [--signoff]\n");
    exit(1) if caller;
    return undef;
}
my $json = pop(@ARGV);
my $db   = JsonSupport::decode($json);

my ($status, $msgs) = $obj->check_criteria(@ARGV, $db);
foreach my $m (@$msgs) {
    print($m, "\n");
}
exit $status;
