1 # Pod::Text::Termcap -- Convert POD data to ASCII text with format escapes.
2 # $Id: Termcap.pm,v 1.5 2001/11/28 00:21:28 eagle Exp $
4 # Copyright 1999, 2001 by Russ Allbery <rra@stanford.edu>
6 # This program is free software; you may redistribute it and/or modify it
7 # under the same terms as Perl itself.
9 # This is a simple subclass of Pod::Text that overrides a few key methods to
10 # output the right termcap escape sequences for formatted text on the current
13 ##############################################################################
14 # Modules and declarations
15 ##############################################################################
17 package Pod::Text::Termcap;
27 use vars qw(@ISA $VERSION);
31 # Don't use the CVS revision as the version, since this module is also in Perl
32 # core and too many things could munge CVS magic revision strings. This
33 # number should ideally be the same as the CVS revision in podlators, however.
37 ##############################################################################
39 ##############################################################################
41 # In the initialization method, grab our terminal characteristics as well as
42 # do all the stuff we normally do.
46 # The default Term::Cap path won't work on Solaris.
47 $ENV{TERMPATH} = "$ENV{HOME}/.termcap:/etc/termcap"
48 . ":/usr/share/misc/termcap:/usr/share/lib/termcap";
51 if (defined $Config{'i_termios'}) {
52 my $termios = POSIX::Termios->new;
54 $ospeed = $termios->getospeed;
57 eval { $term = Tgetent Term::Cap { TERM => undef, OSPEED => $ospeed } };
58 $$self{BOLD} = $$term{_md} || "\e[1m";
59 $$self{UNDL} = $$term{_us} || "\e[4m";
60 $$self{NORM} = $$term{_me} || "\e[m";
62 unless (defined $$self{width}) {
63 $$self{width} = $ENV{COLUMNS} || $$term{_co} || 78;
67 $self->SUPER::initialize;
70 # Make level one headings bold.
75 $self->SUPER::cmd_head1 ("$$self{BOLD}$_$$self{NORM}");
78 # Make level two headings bold.
83 $self->SUPER::cmd_head2 ("$$self{BOLD}$_$$self{NORM}");
86 # Fix up B<> and I<>. Note that we intentionally don't do F<>.
87 sub seq_b { my $self = shift; return "$$self{BOLD}$_[0]$$self{NORM}" }
88 sub seq_i { my $self = shift; return "$$self{UNDL}$_[0]$$self{NORM}" }
90 # Output any included code in bold.
92 my ($self, $code) = @_;
93 $self->output ($$self{BOLD} . $code . $$self{NORM});
96 # Override the wrapping code to igore the special sequences.
101 my $spaces = ' ' x $$self{MARGIN};
102 my $width = $$self{width} - $$self{MARGIN};
103 my $code = "(?:\Q$$self{BOLD}\E|\Q$$self{UNDL}\E|\Q$$self{NORM}\E)";
104 while (length > $width) {
105 if (s/^((?:$code?[^\n]){0,$width})\s+//
106 || s/^((?:$code?[^\n]){$width})//) {
107 $output .= $spaces . $1 . "\n";
112 $output .= $spaces . $_;
113 $output =~ s/\s+$/\n\n/;
118 ##############################################################################
119 # Module return value and documentation
120 ##############################################################################
127 Pod::Text::Color - Convert POD data to ASCII text with format escapes
131 use Pod::Text::Termcap;
132 my $parser = Pod::Text::Termcap->new (sentence => 0, width => 78);
134 # Read POD from STDIN and write to STDOUT.
135 $parser->parse_from_filehandle;
137 # Read POD from file.pod and write to file.txt.
138 $parser->parse_from_file ('file.pod', 'file.txt');
142 Pod::Text::Termcap is a simple subclass of Pod::Text that highlights output
143 text using the correct termcap escape sequences for the current terminal.
144 Apart from the format codes, it in all ways functions like Pod::Text. See
145 L<Pod::Text> for details and available options.
149 This module uses Term::Cap to retrieve the formatting escape sequences for
150 the current terminal, and falls back on the ECMA-48 (the same in this
151 regard as ANSI X3.64 and ISO 6429, the escape codes also used by DEC VT100
152 terminals) if the bold, underline, and reset codes aren't set in the
157 L<Pod::Text>, L<Pod::Parser>, L<Term::Cap>
161 Russ Allbery <rra@stanford.edu>.
163 =head1 COPYRIGHT AND LICENSE
165 Copyright 1999, 2001 by Russ Allbery <rra@stanford.edu>.
167 This program is free software; you may redistribute it and/or modify it
168 under the same terms as Perl itself.