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Man Pages


Manual Reference Pages  -  POD::MARKDOWN (3)

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NAME

Pod::Markdown - Convert POD to Markdown

CONTENTS

VERSION

version 3.005

SYNOPSIS



  # Pod::Simple API is supported.

  # Command line usage: Parse a pod file and print to STDOUT:
  # $ perl -MPod::Markdown -e Pod::Markdown->new->filter(@ARGV) path/to/POD/file > README.md

  # Work with strings:
  my $markdown;
  my $parser = Pod::Markdown->new;
  $parser->output_string(\$markdown);
  $parser->parse_string_document($pod_string);

  # See Pod::Simple docs for more.



DESCRIPTION

This module uses Pod::Simple to convert POD to Markdown.

Literal characters in Pod that are special in Markdown (like *asterisks*) are backslash-escaped when appropriate.

By default markdown and html formatted regions are accepted. Regions of markdown will be passed through unchanged. Regions of html will be placed inside a <div> tag so that markdown characters won’t be processed. Regions of :markdown or :html will be processed as POD and included. To change which regions are accepted use the Pod::Simple API:



  my $parser = Pod::Markdown->new;
  $parser->unaccept_targets(qw( markdown html ));



    A note on encoding and escaping

The common Pod::Simple API returns a character string. If you want Pod::Markdown to return encoded octets, there are two attributes to assist: match_encoding and output_encoding.

When an output encoding is requested any characters that are not valid for that encoding will be escaped as HTML entities.

This is not 100% safe, however.

Markdown escapes all ampersands inside of code spans, so escaping a character as an HTML entity inside of a code span will not be correct. However, with pod’s S and E sequences it is possible to end up with high-bit characters inside of code spans.

So, while output_encoding => ascii can work, it is not recommended. For these reasons (and more), UTF-8 is the default, fallback encoding (when one is required).

If you prefer HTML entities over literal characters you can use html_encode_chars which will only operate outside of code spans (where it is safe).

METHODS

    new



  Pod::Markdown->new(%options);



The constructor accepts the following named arguments:
o man_url_prefix

Alters the man page urls that are created from L<> codes.

The default is http://man.he.net/man.

o perldoc_url_prefix

Alters the perldoc urls that are created from L<> codes. Can be:
o metacpan (shortcut for https://metacpan.org/pod/)
o sco (shortcut for http://search.cpan.org/perldoc?)
o any url

The default is metacpan.



    Pod::Markdown->new(perldoc_url_prefix => http://localhost/perl/pod);



o perldoc_fragment_format

Alters the format of the url fragment for any L<> links that point to a section of an external document ("section" in name). The default will be chosen according to the destination perldoc_url_prefix. Alternatively you can specify one of the following:
o metacpan
o sco
o pod_simple_xhtml
o pod_simple_html
o A code ref

The code ref can expect to receive two arguments: the parser object ($self) and the section text. For convenience the topic variable ($_) is also set to the section text:



  perldoc_fragment_format => sub { s/\W+/-/g; }



o markdown_fragment_format

Alters the format of the url fragment for any L<> links that point to an internal section of this document ("section").

Unfortunately the format of the id attributes produced by whatever system translates the markdown into html is unknown at the time the markdown is generated so we do some simple clean up.

<B>Note:B> markdown_fragment_format and perldoc_fragment_format accept the same values: a (shortcut to a) method name or a code ref.

o include_meta_tags

Specifies whether or not to print author/title meta tags at the top of the document. Default is false.

    html_encode_chars

A string of characters to encode as html entities (using encode_entities in HTML::Entities if available, falling back to numeric entities if not).

Possible values:
o A value of 1 will use the default set of characters from HTML::Entities (control chars, high-bit chars, and <&>").
o A false value will disable.
o Any other value is used as a string of characters (like a regular expression character class).
By default this is disabled and literal characters will be in the output stream. If you specify a desired output_encoding any characters not valid for that encoding will be HTML entity encoded.

<B>NoteB> that Markdown requires ampersands (&) and left angle brackets (<) to be entity-encoded if they could otherwise be interpreted as html entities. If this attribute is configured to encode those characters, they will always be encoded. If not, the module will make an effort to only encode the ones required, so there will be less html noise in the output.

    match_encoding

Boolean: If true, use the =encoding of the input pod as the encoding for the output.

If no encoding is specified, Pod::Simple will guess the encoding if it sees a high-bit character.

If no encoding is guessed (or the specified encoding is unusable), output_encoding will be used if it was specified. Otherwise UTF-8 will be used.

This attribute is not recommended but is provided for consistency with other pod converters.

Defaults to false.

    output_encoding

The encoding to use when writing to the output file handle.

If neither this nor match_encoding are specified, a character string will be returned in whatever Pod::Simple output method you specified.

    man_url_prefix

Returns the url prefix in use for man pages.

    perldoc_url_prefix

Returns the url prefix in use (after resolving shortcuts to urls).

    perldoc_fragment_format

Returns the coderef or format name used to format a url fragment to a section in an external document.

    markdown_fragment_format

Returns the coderef or format name used to format a url fragment to an internal section in this document.

    include_meta_tags

Returns the boolean value indicating whether or not meta tags will be printed.

    format_man_url

Used internally to create a url (using man_url_prefix) from a string like man(1).

    format_perldoc_url



    # With $name and section being the two parts of L<name/section>.
    my $url = $parser->format_perldoc_url($name, $section);



Used internally to create a url from the name (of a module or script) and a possible section (heading).

The format of the url fragment (when pointing to a section in a document) varies depending on the destination url so perldoc_fragment_format is used (which can be customized).

If the module name portion of the link is blank then the section is treated as an internal fragment link (to a section of the generated markdown document) and markdown_fragment_format is used (which can be customized).

    format_fragment_markdown

Format url fragment for an internal link by replacing non-word characters with dashes.

    format_fragment_pod_simple_xhtml

Format url fragment like idify in Pod::Simple::XHTML.

    format_fragment_pod_simple_html

Format url fragment like section_name_tidy in Pod::Simple::HTML.

    format_fragment_metacpan

Format fragment for metacpan.org (uses format_fragment_pod_simple_xhtml).

    format_fragment_sco

Format fragment for search.cpan.org (uses format_fragment_pod_simple_html).

SEE ALSO

o pod2markdown - script included for command line usage
o Pod::Simple - Super class that handles Pod parsing
o perlpod - For writing POD
o perlpodspec - For parsing POD
o <http://daringfireball.net/projects/markdown/syntax> - Markdown spec

SUPPORT

    Perldoc

You can find documentation for this module with the perldoc command.



  perldoc Pod::Markdown



    Websites

The following websites have more information about this module, and may be of help to you. As always, in addition to those websites please use your favorite search engine to discover more resources.
o MetaCPAN

A modern, open-source CPAN search engine, useful to view POD in HTML format.

<http://metacpan.org/release/Pod-Markdown>

    Bugs / Feature Requests

Please report any bugs or feature requests by email to bug-pod-markdown at rt.cpan.org, or through the web interface at <https://rt.cpan.org/Public/Bug/Report.html?Queue=Pod-Markdown>. You will be automatically notified of any progress on the request by the system.

    Source Code

<https://github.com/rwstauner/Pod-Markdown>



  git clone https://github.com/rwstauner/Pod-Markdown.git



AUTHORS

o Marcel Gruenauer <marcel@cpan.org>
o Victor Moral <victor@taquiones.net>
o Ryan C. Thompson <rct at thompsonclan d0t org>
o Aristotle Pagaltzis <pagaltzis@gmx.de>
o Randy Stauner <rwstauner@cpan.org>

CONTRIBUTORS

o Aristotle Pagaltzis <aristotle@cpan.org>
o Cindy Wang (CindyLinz) <cindylinz@gmail.com>
o Graham Ollis <plicease@cpan.org>
o Mike Covington <mfcovington@gmail.com>
o motemen <motemen@cpan.org>
o moznion <moznion@cpan.org>
o Peter Vereshagin <veresc@cpan.org>
o Ryan C. Thompson <rthompson@cpan.org>
o Yasutaka ATARASHI <yakex@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2011 by Randy Stauner.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

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perl v5.20.3 POD::MARKDOWN (3) 2016-03-06

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