use strict;
use constant {
DESC => 'I/O layer ":utf8" used',
EXPL => 'Use ":encoding(UTF-8)" to get strict validation',
};
sub evaluate {
my ($class, $file, $tokens, $src, $args) = @_;
my @violations;
for (my $i = 0; my $token = $tokens->[$i]; $i++) {
my $token_type = $token->{type};
my $token_data = $token->{data};
if ($token_type == BUILTIN_FUNC && ($token_data eq 'open' || $token_data eq 'binmode')) {
my @args;
for ($i++; my $token = $tokens->[$i]; $i++) {
my $token_type = $token->{type};
my $token_kind = $token->{kind};
if ($token_type == RIGHT_PAREN || $token_kind == KIND_STMT_END || $token_kind == KIND_OP) {
last;
}
elsif (
$token_type != COMMA &&
$token_type != REG_DOUBLE_QUOTE &&
$token_type != REG_QUOTE &&
$token_type != REG_DELIM &&
$token_type != LEFT_PAREN &&
$token_kind != KIND_DECL
) {
push @args, $token->{data};
}
}
my $second_arg = $args[1];
if ($second_arg && $second_arg =~ /utf8\Z/) {
push @violations, {
filename => $file,
line => $token->{line},
description => DESC,
explanation => EXPL,
policy => __PACKAGE__,
};
}
}
}
return \@violations;
}
1;