/usr/share/perl5/Term/Table/Util.pm is in libterm-table-perl 0.012-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | package Term::Table::Util;
use strict;
use warnings;
use Config qw/%Config/;
our $VERSION = '0.012';
use Importer Importer => 'import';
our @EXPORT_OK = qw/term_size USE_GCS USE_TERM_READKEY USE_TERM_SIZE_ANY uni_length/;
sub DEFAULT_SIZE() { 80 }
sub try(&) {
my $code = shift;
local ($@, $?, $!);
my $ok = eval { $code->(); 1 };
my $err = $@;
return ($ok, $err);
}
my ($tsa) = try { require Term::Size::Any; Term::Size::Any->import('chars') };
my ($trk) = try { require Term::ReadKey };
$trk &&= Term::ReadKey->can('GetTerminalSize');
if (!-t *STDOUT) {
*USE_TERM_READKEY = sub() { 0 };
*USE_TERM_SIZE_ANY = sub() { 0 };
*term_size = sub {
return $ENV{TABLE_TERM_SIZE} if $ENV{TABLE_TERM_SIZE};
return DEFAULT_SIZE;
};
}
elsif ($tsa) {
*USE_TERM_READKEY = sub() { 0 };
*USE_TERM_SIZE_ANY = sub() { 1 };
*_term_size = sub {
my $size = chars(\*STDOUT);
return DEFAULT_SIZE if !$size;
return DEFAULT_SIZE if $size < DEFAULT_SIZE;
return $size;
};
}
elsif ($trk) {
*USE_TERM_READKEY = sub() { 1 };
*USE_TERM_SIZE_ANY = sub() { 0 };
*_term_size = sub {
my $total;
try {
my @warnings;
{
local $SIG{__WARN__} = sub { push @warnings => @_ };
($total) = Term::ReadKey::GetTerminalSize(*STDOUT);
}
@warnings = grep { $_ !~ m/Unable to get Terminal Size/ } @warnings;
warn @warnings if @warnings;
};
return DEFAULT_SIZE if !$total;
return DEFAULT_SIZE if $total < DEFAULT_SIZE;
return $total;
};
}
else {
*USE_TERM_READKEY = sub() { 0 };
*USE_TERM_SIZE_ANY = sub() { 0 };
*term_size = sub {
return $ENV{TABLE_TERM_SIZE} if $ENV{TABLE_TERM_SIZE};
return DEFAULT_SIZE;
};
}
if (USE_TERM_READKEY() || USE_TERM_SIZE_ANY()) {
if (index($Config{sig_name}, 'WINCH') >= 0) {
my $changed = 0;
my $polled = -1;
$SIG{WINCH} = sub { $changed++ };
my $size;
*term_size = sub {
return $ENV{TABLE_TERM_SIZE} if $ENV{TABLE_TERM_SIZE};
unless ($changed == $polled) {
$polled = $changed;
$size = _term_size();
}
return $size;
}
}
else {
*term_size = sub {
return $ENV{TABLE_TERM_SIZE} if $ENV{TABLE_TERM_SIZE};
_term_size();
};
}
}
my ($gcs, $err) = try { require Unicode::GCString };
if ($gcs) {
*USE_GCS = sub() { 1 };
*uni_length = sub { Unicode::GCString->new($_[0])->columns };
}
else {
*USE_GCS = sub() { 0 };
*uni_length = sub { length($_[0]) };
}
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Term::Table::Util - Utilities for Term::Table.
=head1 DESCRIPTION
This package exports some tools used by Term::Table.
=head1 EXPORTS
=head2 CONSTANTS
=over 4
=item $bool = USE_GCS
True if L<Unicode::GCString> is installed.
=item $bool = USE_TERM_READKEY
True if L<Term::ReadKey> is installed.
=back
=head2 UTILITIES
=over 4
=item $width = term_size()
Get the width of the terminal.
If the C<$TABLE_TERM_SIZE> environment variable is set then that value will be
returned.
This will default to 80 if there is no good way to get the size, or if the size
is unreasonably small.
If L<Term::ReadKey> is installed it will be used.
=item $width = uni_length($string)
Get the width (in columns) of the specified string. When L<Unicode::GCString>
is installed this will work on unicode strings, otherwise it will just use
C<length($string)>.
=back
=head1 SOURCE
The source code repository for Term-Table can be found at
F<http://github.com/exodist/Term-Table/>.
=head1 MAINTAINERS
=over 4
=item Chad Granum E<lt>exodist@cpan.orgE<gt>
=back
=head1 AUTHORS
=over 4
=item Chad Granum E<lt>exodist@cpan.orgE<gt>
=back
=head1 COPYRIGHT
Copyright 2016 Chad Granum E<lt>exodist@cpan.orgE<gt>.
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
See F<http://dev.perl.org/licenses/>
=cut
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