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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
# ex:ts=8 sw=4:
# $OpenBSD: State.pm,v 1.1 2010/06/09 07:26:01 espie Exp $
#
# Copyright (c) 2007-2010 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
use strict;
use warnings;
# common routines to everything state.
# in particular, provides "singleton-like" access to UI.
package OpenBSD::State;
use Carp;
sub new
{
my ($class, $cmd) = @_;
my $o = bless {cmd => $cmd}, $class;
$o->init(@_);
return $o;
}
sub init
{
}
sub usage_is
{
my ($self, @usage) = @_;
$self->{usage} = \@usage;
}
sub usage
{
my $self = shift;
my $code = 0;
if (@_) {
print STDERR "$self->{cmd}: ", $self->f(@_), "\n";
$code = 1;
}
print STDERR "Usage: $self->{cmd} ", shift(@{$self->{usage}}), "\n";
for my $l (@{$self->{usage}}) {
print STDERR " $l\n";
}
exit($code);
}
sub f
{
my $self = shift;
if (@_ == 0) {
return undef;
}
my $_ = shift;
# make it so that #0 is #
unshift(@_, '#');
s/\#(\d+)/$_[$1]/ge;
return $_;
}
sub fatal
{
my $self = shift;
# implementation note: to print "fatal errors" elsewhere,
# the way is to eval { croak @_}; and decide what to do with $@.
croak "Fatal error: ", $self->f(@_), "\n";
}
sub print
{
my $self = shift;
print $self->f(@_);
}
sub say
{
my $self = shift;
print $self->f(@_), "\n";
}
sub errprint
{
my $self = shift;
print STDERR $self->f(@_);
}
sub errsay
{
my $self = shift;
print STDERR $self->f(@_), "\n";
}
1;
|
