# mt-aws-glacier - Amazon Glacier sync client
# Copyright (C) 2012-2013 Victor Efimov
# http://mt-aws.com (also http://vs-dev.com) vs@vs-dev.com
# License: GPLv3
#
# This file is part of "mt-aws-glacier"
#
# mt-aws-glacier 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.
#
# mt-aws-glacier 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 this program. If not, see <http://www.gnu.org/licenses/>.
package App::MtAws::Exceptions;
our $VERSION = '1.058';
use strict;
use warnings;
use utf8;
use Encode;
use constant BINARY_ENCODING => "MT_BINARY";
use App::MtAws::Utils;
use Carp;
eval { require I18N::Langinfo; }; # TODO: test that it's loaded compile time, test that it wont break if failed
require Exporter;
use base qw/Exporter/;
our @EXPORT = qw/exception get_exception is_exception exception_message dump_error get_errno/;
our $_errno_encoding = undef;
sub get_errno
{
my $err = "$_[0]";
local ($@, $!);
# some code in this scope copied from Encode::Locale
# http://search.cpan.org/perldoc?Encode%3A%3ALocale
# by Gisle Aas <gisle@aas.no>.
$_errno_encoding ||= eval {
require I18N::Langinfo;
my $enc = I18N::Langinfo::langinfo(I18N::Langinfo::CODESET());
# copy-paste workaround from Encode::Locale
# https://rt.cpan.org/Ticket/Display.html?id=66373
$enc = "hp-roman8" if $^O eq "hpux" && $enc eq "roman8";
defined (find_encoding($enc)) ? $enc : undef;
} || BINARY_ENCODING();
my $res;
if ($_errno_encoding eq BINARY_ENCODING) {
$res = hex_dump_string($err);
} else {
eval {
# workaround issue https://rt.perl.org/rt3/Ticket/Display.html?id=119499
# perhaps Encode::decode_utf8 can be used here too
$res = utf8::is_utf8($err) ? $err : decode($_errno_encoding, $err, Encode::DIE_ON_ERR|Encode::LEAVE_SRC);
1;
} or do {
$res = hex_dump_string($err);
}
}
$res;
}
# Does not work with directory names
# exception [$previous] { $msg | $code => $msg } name1 => value1, name2 => value2 ...
# exception [$previous] { $msg | $code => $msg } name1 => value1, 'ERRNO', name2 => value2 ...
sub exception
{
my %data;
%data = %{shift()} if (ref $_[0] eq ref {});
if (scalar @_ == 1) {
$data{message} = shift;
} else {
@data{qw/code message/} = (shift, shift);
while (@_) {
my $key = shift;
if ($key eq 'ERRNO') {
confess "ERRNO already used" if exists $data{'errno'};
$data{'errno'} = get_errno($!);
$data{'errno_code'} = $!+0; # numify
} else {
$data{$key} = shift or confess "Malformed exception"
}
}
}
return { 'MTEXCEPTION' => 1, %data };
}
# get_exception -> TRUE|FALSE
# get_exception($@)
# get_exception->{code}
sub get_exception
{
my $e = @_ ? $_[0] : $@;
ref $e eq ref {} && $e->{MTEXCEPTION} && $e;
}
# is_exception()
# is_exception($code)
# is_exception($code, $@)
sub is_exception
{
my ($code, $e) = @_;
$e = $@ unless defined $e;
get_exception($e) &&
(!defined($code) || ( defined(get_exception($e)->{code}) && get_exception($e)->{code} eq $code ));
}
sub exception_message
{
my ($e) = @_;
my %data = %$e;
my $spec = delete $data{message};
my $rep = sub {
my ($match) = @_;
if (my ($format, $name) = $match =~ /^([\w]+)\s+([\w]+)$/) {
my $value = $data{$name};
if (defined($value)) {
if (lc $format eq lc 'string') {
qq{"$value"};
} else {
sprintf("%$format", $value);
}
} else {
':NULL:'
}
} else {
defined($data{$match}) ? $data{$match} : ':NULL:';
}
};
$spec =~ s{%([\w\s]+)%} {$rep->($1)}ge if %data; # in new perl versions \w also means unicode chars..
$spec;
}
sub dump_error
{
my ($where) = (@_, '');
$where = defined($where) && length($where) ? " ($where)" : '';
if (is_exception('cmd_error')) {
# no additional output
} elsif (is_exception) {
print STDERR "ERROR$where: ".exception_message($@)."\n";
} else {
print STDERR "UNEXPECTED ERROR$where: $@\n";
}
}
1;
__END__