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145 lines
4.2 KiB
145 lines
4.2 KiB
# Pod::Text::Termcap -- Convert POD data to ASCII text with format escapes.
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# $Id: Termcap.pm,v 1.0 2000/12/25 12:52:48 eagle Exp $
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#
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# Copyright 1999 by Russ Allbery <[email protected]>
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the same terms as Perl itself.
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#
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# This is a simple subclass of Pod::Text that overrides a few key methods to
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# output the right termcap escape sequences for formatted text on the
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# current terminal type.
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############################################################################
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# Modules and declarations
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############################################################################
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package Pod::Text::Termcap;
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require 5.004;
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use Pod::Text ();
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use POSIX ();
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use Term::Cap;
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use strict;
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use vars qw(@ISA $VERSION);
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@ISA = qw(Pod::Text);
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# Don't use the CVS revision as the version, since this module is also in
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# Perl core and too many things could munge CVS magic revision strings.
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# This number should ideally be the same as the CVS revision in podlators,
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# however.
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$VERSION = 1.00;
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############################################################################
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# Overrides
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############################################################################
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# In the initialization method, grab our terminal characteristics as well as
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# do all the stuff we normally do.
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sub initialize {
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my $self = shift;
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# The default Term::Cap path won't work on Solaris.
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$ENV{TERMPATH} = "$ENV{HOME}/.termcap:/etc/termcap"
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. ":/usr/share/misc/termcap:/usr/share/lib/termcap";
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my $termios = POSIX::Termios->new;
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$termios->getattr;
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my $ospeed = $termios->getospeed;
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my $term = Tgetent Term::Cap { TERM => undef, OSPEED => $ospeed };
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$$self{BOLD} = $$term{_md} or die 'BOLD';
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$$self{UNDL} = $$term{_us} or die 'UNDL';
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$$self{NORM} = $$term{_me} or die 'NORM';
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unless (defined $$self{width}) {
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$$self{width} = $ENV{COLUMNS} || $$term{_co} || 78;
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$$self{width} -= 2;
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}
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$self->SUPER::initialize;
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}
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# Make level one headings bold.
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sub cmd_head1 {
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my $self = shift;
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local $_ = shift;
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s/\s+$//;
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$self->SUPER::cmd_head1 ("$$self{BOLD}$_$$self{NORM}");
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}
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# Make level two headings bold.
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sub cmd_head2 {
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my $self = shift;
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local $_ = shift;
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s/\s+$//;
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$self->SUPER::cmd_head2 ("$$self{BOLD}$_$$self{NORM}");
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}
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# Fix up B<> and I<>. Note that we intentionally don't do F<>.
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sub seq_b { my $self = shift; return "$$self{BOLD}$_[0]$$self{NORM}" }
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sub seq_i { my $self = shift; return "$$self{UNDL}$_[0]$$self{NORM}" }
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# Override the wrapping code to igore the special sequences.
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sub wrap {
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my $self = shift;
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local $_ = shift;
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my $output = '';
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my $spaces = ' ' x $$self{MARGIN};
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my $width = $$self{width} - $$self{MARGIN};
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my $code = "(?:\Q$$self{BOLD}\E|\Q$$self{UNDL}\E|\Q$$self{NORM}\E)";
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while (length > $width) {
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if (s/^((?:$code?[^\n]){0,$width})\s+//
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|| s/^((?:$code?[^\n]){$width})//) {
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$output .= $spaces . $1 . "\n";
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} else {
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last;
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}
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}
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$output .= $spaces . $_;
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$output =~ s/\s+$/\n\n/;
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$output;
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}
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############################################################################
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# Module return value and documentation
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############################################################################
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1;
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__END__
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=head1 NAME
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Pod::Text::Color - Convert POD data to ASCII text with format escapes
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=head1 SYNOPSIS
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use Pod::Text::Termcap;
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my $parser = Pod::Text::Termcap->new (sentence => 0, width => 78);
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# Read POD from STDIN and write to STDOUT.
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$parser->parse_from_filehandle;
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# Read POD from file.pod and write to file.txt.
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$parser->parse_from_file ('file.pod', 'file.txt');
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=head1 DESCRIPTION
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Pod::Text::Termcap is a simple subclass of Pod::Text that highlights output
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text using the correct termcap escape sequences for the current terminal.
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Apart from the format codes, it in all ways functions like Pod::Text. See
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L<Pod::Text> for details and available options.
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=head1 SEE ALSO
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L<Pod::Text|Pod::Text>, L<Pod::Parser|Pod::Parser>
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=head1 AUTHOR
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Russ Allbery E<lt>[email protected]<gt>.
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=cut
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