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Diffstat (limited to 'Master/tlpkg/tlperl/lib/Pod/Text/Color.pm')
-rw-r--r-- | Master/tlpkg/tlperl/lib/Pod/Text/Color.pm | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/Master/tlpkg/tlperl/lib/Pod/Text/Color.pm b/Master/tlpkg/tlperl/lib/Pod/Text/Color.pm new file mode 100644 index 00000000000..2e8864148b4 --- /dev/null +++ b/Master/tlpkg/tlperl/lib/Pod/Text/Color.pm @@ -0,0 +1,155 @@ +# Pod::Text::Color -- Convert POD data to formatted color ASCII text +# +# Copyright 1999, 2001, 2004, 2006, 2008, 2009 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 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. + +############################################################################## +# 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 = '2.06'; + +############################################################################## +# 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 <rra@stanford.edu>. + +=head1 COPYRIGHT AND LICENSE + +Copyright 1999, 2001, 2004, 2006, 2008, 2009 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 |