summaryrefslogtreecommitdiff
path: root/lib/App/Raps2/UI.pm
blob: 2ba700258c3f7298514293157b5787213164a2ae (plain)
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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
package App::Raps2::UI;

use strict;
use warnings;
use 5.010;

use Carp qw(confess);
use POSIX;
use Term::ReadLine;

our $VERSION = '0.3';

sub new {
	my ($obj) = @_;

	my $ref = {};

	$ref->{term_readline} = Term::ReadLine->new('App::Raps2');

	return bless( $ref, $obj );
}

sub list {
	my ( $self, @list ) = @_;

	my $format = "%-20s %-20s %s\n";

	if ( not $self->{list}->{header} ) {
		printf( $format, map { $_->[0] } @list );
		$self->{list}->{header} = 1;
	}
	printf( $format, map { $_->[1] // q{} } @list );

	return;
}

sub read_line {
	my ( $self, $str, $pre ) = @_;

	my $input = $self->{term_readline}->readline( "${str}: ", $pre );

	return $input;
}

sub read_multiline {
	my ( $self, $str ) = @_;

	my $in;

	say "${str} (^D to quit)";

	while ( my $line = $self->read_line('multiline') ) {
		$in .= "${line}\n";
	}

	return $in;
}

sub read_pw {
	my ( $self, $str, $verify ) = @_;

	my ( $in1, $in2 );
	my $term = POSIX::Termios->new();

	$term->getattr(0);
	$term->setlflag( $term->getlflag() & ~POSIX::ECHO );
	$term->setattr( 0, POSIX::TCSANOW );

	print "${str}: ";
	$in1 = readline(STDIN);
	print "\n";

	if ($verify) {
		print 'Verify: ';
		$in2 = readline(STDIN);
		print "\n";
	}

	$term->setlflag( $term->getlflag() | POSIX::ECHO );
	$term->setattr( 0, POSIX::TCSANOW );

	if ( $verify and $in1 ne $in2 ) {
		confess('Input lines did not match');
	}

	chomp $in1;

	return $in1;
}

sub to_clipboard {
	my ( $self, $str ) = @_;

	open( my $clipboard, q{|-}, 'xclip -l 1' )
	  or confess("Failed to execute xclip -l 1: $!");

	print $clipboard $str;

	close($clipboard)
	  or confess("Failed to close pipe to xclip: $!");

	return;
}

sub output {
	my ( $self, @out ) = @_;

	for my $pair (@out) {
		printf( "%-8s : %s\n", $pair->[0], $pair->[1] // q{}, );
	}

	return;
}

1;

__END__

=head1 NAME

App::Raps2::UI - App::Raps2 User Interface

=head1 SYNOPSIS

    my $ui = App::Raps2::UI->new();

    my $input = $ui->read_line('Say something');

    my $password = $ui->read_pw('New password', 1);

    $ui->to_clipboard('stuff!');

=head1 VERSION

This manual documents B<App::Raps2::UI> version 0.3

=head1 DESCRIPTION

App::Raps2::UI is used by App::Raps2 to interface with the user, i.e. do input
and output on the terminal.

=head1 METHODS

=over

=item $ui = App::Raps2::UI->new()

Returns a new App::Raps2::UI object.

=item $ui->list(I<\@item1>, I<\@item2>, I<\@item3>)

Print the list items neatly formatted to stdout. Each I<item> looks like B<[>
I<key>, I<value> B<]>. When B<list> is called for the first time, it will
print the keys as well as the values.

=item $ui->read_line(I<$question>, [I<$prefill>])

Print "I<question>: " to stdout and wait for the user to input text followed
by a newline.  I<prefill> sets the default content of the answer field.

Returns the user's reply, excluding the newline.

=item $ui->read_multiline(I<$message>)

Like B<read_line>, but repeats I<message> each time the user hits return.
Input is terminated by EOF (Ctrl+D).  Returns a string concatenation of all
lines (including newlines).

=item $ui->read_pw(I<$message>, I<$verify>)

Prompt the user for a password. I<message> is displayed, the user's input is
noch echoed.  If I<verify> is set, the user has to enter the same input twice,
otherwise B<read_pw> dies.  Returns the input.

=item $ui->to_clipboard(I<$string>)

Place I<string> in the primary X Clipboard.

=item $ui->output(I<\@pair>, I<...>)

I<pair> consinsts of B<[> I<key>, I<value> B<]>. For each I<pair>, prints
"     key : value" to stdout.

=back

=head1 DIAGNOSTICS

When App::Raps2::UI encounters an error, it uses Carp(3pm)'s B<confess>
function to die with a backtrace.

=head1 DEPENDENCIES

This module requires B<Term::ReadLine> and the B<xclip> executable.

=head1 BUGS AND LIMITATIONS

Unknown.

=head1 SEE ALSO

App::Raps2(3pm).

=head1 AUTHOR

Copyright (C) 2011 by Daniel Friesel E<lt>derf@finalrewind.orgE<gt>

=head1 LICENSE

  0. You just DO WHAT THE FUCK YOU WANT TO.