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+# Pod::Text::Termcap -- Convert POD data to ASCII text with format escapes.
+# $Id: Termcap.pm,v 2.3 2006-01-25 23:56:54 eagle Exp $
+#
+# Copyright 1999, 2001, 2002, 2004, 2006 by Russ Allbery <rra@stanford.edu>
+#
+# This program is free software; you may redistribute it and/or modify it
+# under the same terms as Perl itself.
+#
+# This is a simple subclass of Pod::Text that overrides a few key methods to
+# output the right termcap escape sequences for formatted text on the current
+# terminal type.
+
+##############################################################################
+# Modules and declarations
+##############################################################################
+
+package Pod::Text::Termcap;
+
+require 5.004;
+
+use Pod::Text ();
+use POSIX ();
+use Term::Cap;
+
+use strict;
+use vars qw(@ISA $VERSION);
+
+@ISA = qw(Pod::Text);
+
+# Don't use the CVS revision as the version, since this module is also in Perl
+# core and too many things could munge CVS magic revision strings.  This
+# number should ideally be the same as the CVS revision in podlators, however.
+$VERSION = 2.03;
+
+##############################################################################
+# Overrides
+##############################################################################
+
+# In the initialization method, grab our terminal characteristics as well as
+# do all the stuff we normally do.
+sub new {
+    my ($self, @args) = @_;
+    my ($ospeed, $term, $termios);
+    $self = $self->SUPER::new (@args);
+
+    # $ENV{HOME} is usually not set on Windows.  The default Term::Cap path
+    # may not work on Solaris.
+    my $home = exists $ENV{HOME} ? "$ENV{HOME}/.termcap:" : '';
+    $ENV{TERMPATH} = $home . '/etc/termcap:/usr/share/misc/termcap'
+                           . ':/usr/share/lib/termcap';
+
+    # Fall back on a hard-coded terminal speed if POSIX::Termios isn't
+    # available (such as on VMS).
+    eval { $termios = POSIX::Termios->new };
+    if ($@) {
+        $ospeed = 9600;
+    } else {
+        $termios->getattr;
+        $ospeed = $termios->getospeed || 9600;
+    }
+
+    # Fall back on the ANSI escape sequences if Term::Cap doesn't work.
+    eval { $term = Tgetent Term::Cap { TERM => undef, OSPEED => $ospeed } };
+    $$self{BOLD} = $$term{_md} || "\e[1m";
+    $$self{UNDL} = $$term{_us} || "\e[4m";
+    $$self{NORM} = $$term{_me} || "\e[m";
+
+    unless (defined $$self{width}) {
+        $$self{opt_width} = $ENV{COLUMNS} || $$term{_co} || 80;
+        $$self{opt_width} -= 2;
+    }
+
+    return $self;
+}
+
+# Make level one headings bold.
+sub cmd_head1 {
+    my ($self, $attrs, $text) = @_;
+    $text =~ s/\s+$//;
+    $self->SUPER::cmd_head1 ($attrs, "$$self{BOLD}$text$$self{NORM}");
+}
+
+# Make level two headings bold.
+sub cmd_head2 {
+    my ($self, $attrs, $text) = @_;
+    $text =~ s/\s+$//;
+    $self->SUPER::cmd_head2 ($attrs, "$$self{BOLD}$text$$self{NORM}");
+}
+
+# Fix up B<> and I<>.  Note that we intentionally don't do F<>.
+sub cmd_b { my $self = shift; return "$$self{BOLD}$_[1]$$self{NORM}" }
+sub cmd_i { my $self = shift; return "$$self{UNDL}$_[1]$$self{NORM}" }
+
+# Output any included code in bold.
+sub output_code {
+    my ($self, $code) = @_;
+    $self->output ($$self{BOLD} . $code . $$self{NORM});
+}
+
+# Override the wrapping code to igore the special sequences.
+sub wrap {
+    my $self = shift;
+    local $_ = shift;
+    my $output = '';
+    my $spaces = ' ' x $$self{MARGIN};
+    my $width = $$self{opt_width} - $$self{MARGIN};
+
+    # $codes matches a single special sequence.  $char matches any number of
+    # special sequences preceeding a single character other than a newline.
+    # We have to do $shortchar and $longchar in variables because the
+    # construct ${char}{0,$width} didn't do the right thing until Perl 5.8.x.
+    my $codes = "(?:\Q$$self{BOLD}\E|\Q$$self{UNDL}\E|\Q$$self{NORM}\E)";
+    my $char = "(?:$codes*[^\\n])";
+    my $shortchar = $char . "{0,$width}";
+    my $longchar = $char . "{$width}";
+    while (length > $width) {
+        if (s/^($shortchar)\s+// || s/^($longchar)//) {
+            $output .= $spaces . $1 . "\n";
+        } else {
+            last;
+        }
+    }
+    $output .= $spaces . $_;
+    $output =~ s/\s+$/\n\n/;
+    return $output;
+}
+
+##############################################################################
+# Module return value and documentation
+##############################################################################
+
+1;
+__END__
+
+=head1 NAME
+
+Pod::Text::Termcap - Convert POD data to ASCII text with format escapes
+
+=head1 SYNOPSIS
+
+    use Pod::Text::Termcap;
+    my $parser = Pod::Text::Termcap->new (sentence => 0, width => 78);
+
+    # Read POD from STDIN and write to STDOUT.
+    $parser->parse_from_filehandle;
+
+    # Read POD from file.pod and write to file.txt.
+    $parser->parse_from_file ('file.pod', 'file.txt');
+
+=head1 DESCRIPTION
+
+Pod::Text::Termcap is a simple subclass of Pod::Text that highlights output
+text using the correct termcap escape sequences for the current terminal.
+Apart from the format codes, it in all ways functions like Pod::Text.  See
+L<Pod::Text> for details and available options.
+
+=head1 NOTES
+
+This module uses Term::Cap to retrieve the formatting escape sequences for
+the current terminal, and falls back on the ECMA-48 (the same in this
+regard as ANSI X3.64 and ISO 6429, the escape codes also used by DEC VT100
+terminals) if the bold, underline, and reset codes aren't set in the
+termcap information.
+
+=head1 SEE ALSO
+
+L<Pod::Text>, L<Pod::Simple>, L<Term::Cap>
+
+The current version of this module is always available from its web site at
+L<http://www.eyrie.org/~eagle/software/podlators/>.  It is also part of the
+Perl core distribution as of 5.6.0.
+
+=head1 AUTHOR
+
+Russ Allbery <rra@stanford.edu>.
+
+=head1 COPYRIGHT AND LICENSE
+
+Copyright 1999, 2001, 2002, 2004, 2006 by Russ Allbery <rra@stanford.edu>.
+
+This program is free software; you may redistribute it and/or modify it
+under the same terms as Perl itself.
+
+=cut