sanitize-commit

#! /usr/bin/perl
# Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
# Copyright (C) 2014 Petroules Corporation.
# Contact: http://www.qt-project.org/legal
#
# You may use this file under the terms of the 3-clause BSD license.
# See the file LICENSE from this package for details.
#

use strict;
use warnings;
use Cwd;

if ($#ARGV < 0 or $#ARGV > 1 || ($#ARGV == 1 && $ARGV[1] !~ /^(strict|gerrit(-rest)?)$/)) {
    print STDERR "Usage: $0 <sha1> [strict]\n";
    exit 2;
}
my $sha1 = $ARGV[0];
my $gerrit_rest = ($#ARGV == 1 && $ARGV[1] eq "gerrit-rest");
my $gerrit = $gerrit_rest || ($#ARGV == 1 && $ARGV[1] eq "gerrit");
my $strict = $gerrit || ($#ARGV == 1 && $ARGV[1] eq "strict");

my $repo = getcwd();
$repo =~ s,/?\.git$,,;
$repo =~ s,^.*/,,;
my %config = ();
for (`git config --list`) {
    if (/^sanity\.\Q$repo\E\.([^=]+)=(.*$)/) {
        $config{$1} = $2;
    }
}

my %cfg = ();
if (defined $ENV{GIT_PUSH}) {
    foreach my $c (split ",", $ENV{GIT_PUSH}) {
        $cfg{$c} = 1;
    }
}
if (defined $config{flags}) {
    foreach my $c (split ",", $config{flags}) {
        $cfg{$c} = 1;
    }
}
my (%watch_files, %watch_messages);
for my $key (keys %config) {
    $watch_files{$1} = $config{$key} if ($key =~ /^watches\.([^.]+)\.files/);
    $watch_messages{$1} = $config{$key} if ($key =~ /^watches\.([^.]+)\.message/);
}
my $fail = 0;
my $file = "";
my $lineno = 0;
my $summary;
# Hash (by file) of hashes (by line) of lists (reports) of lists (msg, extra)
my %complaints;
my %footnotes;

sub printerr()
{
  die "cannot run git: ".$! if ($? < 0);
  die "git crashed with signal ".$? if ($? & 127);
  die "git exited with status ".($? >> 8) if ($?);
}

sub do_complain($$$;$@)
{
    my ($line, $msg, $key, $level, @extra) = @_;

    $level = 0 if (!defined($level) || ($level < 0 && $strict && length($key)));
    if ($level >= 0) {
        $fail = $level + 1 if ($level >= $fail);