/usr/lib/x86_64-linux-gnu/perl5/5.22/Embperl/Form/Validate/Integer.pm is in libembperl-perl 2.5.0-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Embperl - Copyright (c) 1997-2008 Gerald Richter / ecos gmbh www.ecos.de
# Embperl - Copyright (c) 2008-2014 Gerald Richter
#
# You may distribute under the terms of either the GNU General Public
# License or the Artistic License, as specified in the Perl README file.
#
# THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
# WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#
# $Id: Integer.pm 1578075 2014-03-16 14:01:14Z richter $
#
###################################################################################
package Embperl::Form::Validate::Integer ;
use base qw(Embperl::Form::Validate::Number);
# --------------------------------------------------------------
sub validate
{
my ($self, $key, $value, $fdat, $pref) = @_ ;
return $value =~ /^\s*[0-9+-][0-9]*\s*$/ ? undef : ['validate_number', $value] ;
}
# --------------------------------------------------------------
sub getscript_validate
{
my ($self, $arg, $pref) = @_ ;
return ('obj.value.search(/^\s*[0-9+-][0-9]*\s*$/) >= 0', ['validate_number', "'+obj.value+'"]) ;
}
1;
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