Pod::Simple(3pm)                                Perl Programmers Reference Guide                                Pod::Simple(3pm)



NAME
       Pod::Simple - framework for parsing Pod

SYNOPSIS
        TODO

DESCRIPTION
       Pod::Simple is a Perl library for parsing text in the Pod ("plain old documentation") markup language that is typically
       used for writing documentation for Perl and for Perl modules. The Pod format is explained perlpod; the most common
       formatter is called "perldoc".

       Pod formatters can use Pod::Simple to parse Pod documents and render them into plain text, HTML, or any number of other
       formats. Typically, such formatters will be subclasses of Pod::Simple, and so they will inherit its methods, like
       "parse_file".

       If you're reading this document just because you have a Pod-processing subclass that you want to use, this document (plus
       the documentation for the subclass) is probably all you need to read.

       If you're reading this document because you want to write a formatter subclass, continue reading it and then read
       Pod::Simple::Subclassing, and then possibly even read perlpodspec (some of which is for parser-writers, but much of which
       is notes to formatter-writers).

MAIN METHODS
       "$parser = SomeClass->new();"
           This returns a new parser object, where "SomeClass" is a subclass of Pod::Simple.

       "$parser->output_fh( *OUT );"
           This sets the filehandle that $parser's output will be written to.  You can pass *STDOUT, otherwise you should
           probably do something like this:

               my $outfile = "output.txt";
               open TXTOUT, ">$outfile" or die "Can't write to $outfile: $!";
               $parser->output_fh(*TXTOUT);

           ...before you call one of the "$parser->parse_whatever" methods.

       "$parser->output_string( \$somestring );"
           This sets the string that $parser's output will be sent to, instead of any filehandle.

       "$parser->parse_file( $some_filename );"
       "$parser->parse_file( *INPUT_FH );"
           This reads the Pod content of the file (or filehandle) that you specify, and processes it with that $parser object,
           according to however $parser's class works, and according to whatever parser options you have set up for this $parser
           object.

       "$parser->parse_string_document( $all_content );"
           This works just like "parse_file" except that it reads the Pod content not from a file, but from a string that you
           have already in memory.

       "$parser->parse_lines( ...@lines..., undef );"
           This processes the lines in @lines (where each list item must be a defined value, and must contain exactly one line
           of content -- so no items like "foo\nbar" are allowed).  The final "undef" is used to indicate the end of document
           being parsed.

           The other "parser_whatever" methods are meant to be called only once per $parser object; but "parse_lines" can be
           called as many times per $parser object as you want, as long as the last call (and only the last call) ends with an
           "undef" value.

       "$parser->content_seen"
           This returns true only if there has been any real content seen for this document.

       "SomeClass->filter( $filename );"
       "SomeClass->filter( *INPUT_FH );"
       "SomeClass->filter( \$document_content );"
           This is a shortcut method for creating a new parser object, setting the output handle to STDOUT, and then processing
           the specified file (or filehandle, or in-memory document). This is handy for one-liners like this:

             perl -MPod::Simple::Text -e "Pod::Simple::Text->filter('thingy.pod')"

SECONDARY METHODS
       Some of these methods might be of interest to general users, as well as of interest to formatter-writers.

       Note that the general pattern here is that the accessor-methods read the attribute's value with "$value =
       $parser->attribute" and set the attribute's value with "$parser->attribute(newvalue)".  For each accessor, I typically
       only mention one syntax or another, based on which I think you are actually most likely to use.

       "$parser->no_whining( SOMEVALUE )"
           If you set this attribute to a true value, you will suppress the parser's complaints about irregularities in the Pod
           coding. By default, this attribute's value is false, meaning that irregularities will be reported.

           Note that turning this attribute to true won't suppress one or two kinds of complaints about rarely occurring
           unrecoverable errors.

       "$parser->no_errata_section( SOMEVALUE )"
           If you set this attribute to a true value, you will stop the parser from generating a "POD ERRORS" section at the end
           of the document. By default, this attribute's value is false, meaning that an errata section will be generated, as
           necessary.

       "$parser->complain_stderr( SOMEVALUE )"
           If you set this attribute to a true value, it will send reports of parsing errors to STDERR. By default, this
           attribute's value is false, meaning that no output is sent to STDERR.

           Setting "complain_stderr" also sets "no_errata_section".

       "$parser->source_filename"
           This returns the filename that this parser object was set to read from.

       "$parser->doc_has_started"
           This returns true if $parser has read from a source, and has seen Pod content in it.

       "$parser->source_dead"
           This returns true if $parser has read from a source, and come to the end of that source.

       "$parser->strip_verbatim_indent( SOMEVALUE )"
           The perlpod spec for a Verbatim paragraph is "It should be reproduced exactly...", which means that the whitespace
           you've used to indent your verbatim blocks will be preserved in the output. This can be annoying for outputs such as
           HTML, where that whitespace will remain in front of every line. It's an unfortunate case where syntax is turned into
           semantics.

           If the POD your parsing adheres to a consistent indentation policy, you can have such indentation stripped from the
           beginning of every line of your verbatim blocks. This method tells Pod::Simple what to strip. For two-space indents,
           you'd use:

             $parser->strip_verbatim_indent('  ');

           For tab indents, you'd use a tab character:

             $parser->strip_verbatim_indent("\t");

           If the POD is inconsistent about the indentation of verbatim blocks, but you have figured out a heuristic to
           determine how much a particular verbatim block is indented, you can pass a code reference instead. The code reference
           will be executed with one argument, an array reference of all the lines in the verbatim block, and should return the
           value to be stripped from each line. For example, if you decide that you're fine to use the first line of the
           verbatim block to set the standard for indentation of the rest of the block, you can look at the first line and
           return the appropriate value, like so:

             $new->strip_verbatim_indent(sub {
                 my $lines = shift;
                 (my $indent = $lines->[0]) =~ s/\S.*//;
                 return $indent;
             });

           If you'd rather treat each line individually, you can do that, too, by just transforming them in-place in the code
           reference and returning "undef". Say that you don't want any lines indented. You can do something like this:

             $new->strip_verbatim_indent(sub {
                 my $lines = shift;
                 sub { s/^\s+// for @{ $lines },
                 return undef;
             });

CAVEATS
       This is just a beta release -- there are a good number of things still left to do.  Notably, support for EBCDIC platforms
       is still half-done, an untested.

SEE ALSO
       Pod::Simple::Subclassing

       perlpod

       perlpodspec

       Pod::Escapes

       perldoc

SUPPORT
       Questions or discussion about POD and Pod::Simple should be sent to the pod-peopleATperl.org mail list. Send an empty
       email to pod-people-subscribeATperl.org to subscribe.

       This module is managed in an open GitHub repository, http://github.com/theory/pod-simple/ <http://github.com/theory/pod-
       simple/>. Feel free to fork and contribute, or to clone git://github.com/theory/pod-simple.git
       <git://github.com/theory/pod-simple.git>; and send patches!

       Patches against Pod::Simple are welcome. Please send bug reports to <bug-pod-simpleATrt.org>.

COPYRIGHT AND DISCLAIMERS
       Copyright (c) 2002 Sean M. Burke.

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

       This program is distributed in the hope that it will be useful, but without any warranty; without even the implied
       warranty of merchantability or fitness for a particular purpose.

AUTHOR
       Pod::Simple was created by Sean M. Burke <sburkeATcpan.org>.  But don't bother him, he's retired.

       Pod::Simple is maintained by:

       o   Allison Randal "allisonATperl.org"

       o   Hans Dieter Pearcey "hdpATcpan.org"

       o   David E. Wheeler "dwheelerATcpan.org"



perl v5.12.4                                               2011-06-01                                           Pod::Simple(3pm)