3
0
mirror of https://github.com/pragma-/pbot.git synced 2024-12-24 19:52:34 +01:00
pbot/PBot/Utils/ValidateString.pm
2020-02-16 15:55:48 -08:00

39 lines
946 B
Perl

package PBot::Utils::ValidateString;
use warnings;
use strict;
use feature 'unicode_strings';
require Exporter;
our @ISA = qw/Exporter/;
our @EXPORT = qw/validate_string/;
use JSON;
sub validate_string {
my ($string, $max_length) = @_;
return $string if not defined $string or not length $string;
$max_length = 1024 * 8 if not defined $max_length;
local $@;
eval {
my $h = decode_json($string);
foreach my $k (keys %$h) { $h->{$k} = substr $h->{$k}, 0, $max_length unless $max_length <= 0; }
$string = encode_json($h);
};
if ($@) {
# not a json string
$string = substr $string, 0, $max_length unless $max_length <= 0;
}
# $string =~ s/(\P{PosixGraph})/my $ch = $1; if ($ch =~ m{[\s\x03\x02\x1d\x1f\x16\x0f]}) { $ch } else { sprintf "\\x%02X", ord $ch }/ge;
# $string = substr $string, 0, $max_length unless $max_length <= 0;
return $string;
}
1;