/usr/share/perl5/FCM1/Exception.pm is in fcm 2017.10.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# (C) British Crown Copyright 2006-17 Met Office.
#
# This file is part of FCM, tools for managing and building source code.
#
# FCM 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 3 of the License, or
# (at your option) any later version.
#
# FCM 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 FCM. If not, see <http://www.gnu.org/licenses/>.
# ------------------------------------------------------------------------------
use strict;
use warnings;
package FCM1::Exception;
use overload (q{""} => \&as_string);
use Scalar::Util qw{blessed};
# ------------------------------------------------------------------------------
# Returns true if $e is a blessed instance of this class.
sub caught {
my ($class, $e) = @_;
return (blessed($e) && $e->isa($class));
}
# ------------------------------------------------------------------------------
# Constructor
sub new {
my ($class, $args_ref) = @_;
return bless(
{message => q{unknown problem}, ($args_ref ? %{$args_ref} : ())},
$class,
);
}
# ------------------------------------------------------------------------------
# Returns a string representation of this exception
sub as_string {
my ($self) = @_;
return sprintf("%s: %s\n", blessed($self), $self->get_message());
}
# ------------------------------------------------------------------------------
# Returns the message of this exception
sub get_message {
my ($self) = @_;
return $self->{message};
}
1;
__END__
=head1 NAME
FCM1::Exception
=head1 SYNOPSIS
use FCM1::Exception;
eval {
croak(FCM1::Exception->new({message => $message}));
};
if ($@) {
if (FCM1::Exception->caught($@)) {
print({STDERR} $@);
}
}
=head1 DESCRIPTION
This exception is raised when there is a generic problem in FCM.
=head1 METHODS
=over 4
=item $class->caught($e)
Returns true if $e is a blessed instance of this class.
=item $class->new({message=E<gt>$message})
Returns a new instance of this exception. Its first argument must be a
reference to a hash containing the detailed I<message> of the exception.
=item $e->as_string()
Returns a string representation of this exception.
=item $e->get_message()
Returns the detailed message of this exception.
=back
=head1 COPYRIGHT
E<169> Crown copyright Met Office. All rights reserved.
=cut
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