1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
package vmsish;
=head1 NAME
vmsish - Perl pragma to control VMS-specific language features
=head1 SYNOPSIS
use vmsish;
use vmsish 'status'; # or '$?'
use vmsish 'exit';
use vmsish 'time';
use vmsish;
no vmsish 'time';
=head1 DESCRIPTION
If no import list is supplied, all possible VMS-specific features are
assumed. Currently, there are three VMS-specific features available:
'status' (a.k.a '$?'), 'exit', and 'time'.
=over 6
=item C<vmsish status>
This makes C<$?> and C<system> return the native VMS exit status
instead of emulating the POSIX exit status.
=item C<vmsish exit>
This makes C<exit 1> produce a successful exit (with status SS$_NORMAL),
instead of emulating UNIX exit(), which considers C<exit 1> to indicate
an error. As with the CRTL's exit() function, C<exit 0> is also mapped
to an exit status of SS$_NORMAL, and any other argument to exit() is
used directly as Perl's exit status.
=item C<vmsish time>
This makes all times relative to the local time zone, instead of the
default of Universal Time (a.k.a Greenwich Mean Time, or GMT).
=back
See L<perlmod/Pragmatic Modules>.
=cut
if ($^O ne 'VMS') {
require Carp;
Carp::croak("This isn't VMS");
}
sub bits {
my $bits = 0;
my $sememe;
foreach $sememe (@_) {
$bits |= 0x20000000, next if $sememe eq 'status' || $sememe eq '$?';
$bits |= 0x40000000, next if $sememe eq 'exit';
$bits |= 0x80000000, next if $sememe eq 'time';
}
$bits;
}
sub import {
shift;
$^H |= bits(@_ ? @_ : qw(status exit time));
}
sub unimport {
shift;
$^H &= ~ bits(@_ ? @_ : qw(status exit time));
}
1;
|
