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Filename/usr/share/perl/5.18.2/Pod/Text/Color.pm
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# Pod::Text::Color -- Convert POD data to formatted color ASCII text
#
# This is just a basic proof of concept. It should later be modified to make
# better use of color, take options changing what colors are used for what
# text, and the like.
#
# Copyright 1999, 2001, 2004, 2006, 2008, 2009 Russ Allbery <[email protected]>
#
# This program is free software; you may redistribute it and/or modify it
# under the same terms as Perl itself.

##############################################################################
# Modules and declarations
##############################################################################

package Pod::Text::Color;

require 5.004;

use Pod::Text ();
use Term::ANSIColor qw(colored);

use strict;
use vars qw(@ISA $VERSION);

@ISA = qw(Pod::Text);

$VERSION = '2.07';

##############################################################################
# Overrides
##############################################################################

# Make level one headings bold.
sub cmd_head1 {
my ($self, $attrs, $text) = @_;
$text =~ s/\s+$//;
$self->SUPER::cmd_head1 ($attrs, colored ($text, 'bold'));
}

# Make level two headings bold.
sub cmd_head2 {
my ($self, $attrs, $text) = @_;
$text =~ s/\s+$//;
$self->SUPER::cmd_head2 ($attrs, colored ($text, 'bold'));
}

# Fix the various formatting codes.
sub cmd_b { return colored ($_[2], 'bold') }
sub cmd_f { return colored ($_[2], 'cyan') }
sub cmd_i { return colored ($_[2], 'yellow') }

# Output any included code in green.
sub output_code {
my ($self, $code) = @_;
$code = colored ($code, 'green');
$self->output ($code);
}

# Strip all of the formatting from a provided string, returning the stripped
# version. We will eventually want to use colorstrip() from Term::ANSIColor,
# but it's fairly new so avoid the tight dependency.
sub strip_format {
my ($self, $text) = @_;
$text =~ s/\e\[[\d;]*m//g;
return $text;
}

# We unfortunately have to override the wrapping code here, since the normal
# wrapping code gets really confused by all the escape sequences.
sub wrap {
my $self = shift;
local $_ = shift;
my $output = '';
my $spaces = ' ' x $$self{MARGIN};
my $width = $$self{opt_width} - $$self{MARGIN};

# 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 $char = '(?:(?:\e\[[\d;]+m)*[^\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/;
$output;
}

##############################################################################
# Module return value and documentation
##############################################################################

1;
__END__

=head1 NAME

Pod::Text::Color - Convert POD data to formatted color ASCII text

=for stopwords
Allbery

=head1 SYNOPSIS

use Pod::Text::Color;
my $parser = Pod::Text::Color->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::Color is a simple subclass of Pod::Text that highlights output
text using ANSI color escape sequences. Apart from the color, it in all
ways functions like Pod::Text. See L<Pod::Text> for details and available
options.

Term::ANSIColor is used to get colors and therefore must be installed to use
this module.

=head1 BUGS

This is just a basic proof of concept. It should be seriously expanded to
support configurable coloration via options passed to the constructor, and
B<pod2text> should be taught about those.

=head1 SEE ALSO

L<Pod::Text>, L<Pod::Simple>

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 <[email protected]>.

=head1 COPYRIGHT AND LICENSE

Copyright 1999, 2001, 2004, 2006, 2008, 2009 Russ Allbery <[email protected]>.

This program is free software; you may redistribute it and/or modify it
under the same terms as Perl itself.

=cut