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Pod::Simple::PullParseUser Contributed Perl DocumentPod::Simple::PullParser(3)
NAME
       Pod::Simple::PullParser -- a pull-parser interface to parsing Pod
SYNOPSIS
        my $parser = SomePodProcessor->new;
        $parser->set_source( "whatever.pod" );
        $parser->run;
       Or:
        my $parser = SomePodProcessor->new;
        $parser->set_source( $some_filehandle_object );
        $parser->run;
       Or:
        my $parser = SomePodProcessor->new;
        $parser->set_source( \$document_source );
        $parser->run;
       Or:
        my $parser = SomePodProcessor->new;
        $parser->set_source( \@document_lines );
        $parser->run;
       And elsewhere:
        require 5;
        package SomePodProcessor;
        use strict;
        use base qw(Pod::Simple::PullParser);
        sub run {
          my $self = shift;
         Token:
          while(my $token = $self->get_token) {
            ...process each token...
          }
        }
DESCRIPTION
       This class is for using Pod::Simple to build a Pod processor -- but one
       that uses an interface based on a stream of token objects, instead of
       based on events.
       This is a subclass of Pod::Simple and inherits all its methods.
       A subclass of Pod::Simple::PullParser should define a "run" method that
       calls "$token = $parser->get_token" to pull tokens.
       See the source for Pod::Simple::RTF for an example of a formatter that
       uses Pod::Simple::PullParser.
METHODS
       my $token = $parser->get_token
           This returns the next token object (which will be of a subclass of
           Pod::Simple::PullParserToken), or undef if the parser-stream has
           hit the end of the document.
       $parser->unget_token( $token )
       $parser->unget_token( $token1, $token2, ... )
           This restores the token object(s) to the front of the parser
           stream.
       The source has to be set before you can parse anything.  The lowest-
       level way is to call "set_source":
       $parser->set_source( $filename )
       $parser->set_source( $filehandle_object )
       $parser->set_source( \$document_source )
       $parser->set_source( \@document_lines )
       Or you can call these methods, which Pod::Simple::PullParser has
       defined to work just like Pod::Simple's same-named methods:
       $parser->parse_file(...)
       $parser->parse_string_document(...)
       $parser->filter(...)
       $parser->parse_from_file(...)
       For those to work, the Pod-processing subclass of
       Pod::Simple::PullParser has to have defined a $parser->run method -- so
       it is advised that all Pod::Simple::PullParser subclasses do so.  See
       the Synopsis above, or the source for Pod::Simple::RTF.
       Authors of formatter subclasses might find these methods useful to call
       on a parser object that you haven't started pulling tokens from yet:
       my $title_string = $parser->get_title
           This tries to get the title string out of $parser, by getting some
           tokens, and scanning them for the title, and then ungetting them so
           that you can process the token-stream from the beginning.
           For example, suppose you have a document that starts out:
             =head1 NAME
             Hoo::Boy::Wowza -- Stuff B<wow> yeah!
           $parser->get_title on that document will return "Hoo::Boy::Wowza --
           Stuff wow yeah!". If the document starts with:
             =head1 Name
             Hoo::Boy::W00t -- Stuff B<w00t> yeah!
           Then you'll need to pass the "nocase" option in order to recognize
           "Name":
             $parser->get_title(nocase => 1);
           In cases where get_title can't find the title, it will return
           empty-string ("").
       my $title_string = $parser->get_short_title
           This is just like get_title, except that it returns just the
           modulename, if the title seems to be of the form "SomeModuleName --
           description".
           For example, suppose you have a document that starts out:
             =head1 NAME
             Hoo::Boy::Wowza -- Stuff B<wow> yeah!
           then $parser->get_short_title on that document will return
           "Hoo::Boy::Wowza".
           But if the document starts out:
             =head1 NAME
             Hooboy, stuff B<wow> yeah!
           then $parser->get_short_title on that document will return "Hooboy,
           stuff wow yeah!". If the document starts with:
             =head1 Name
             Hoo::Boy::W00t -- Stuff B<w00t> yeah!
           Then you'll need to pass the "nocase" option in order to recognize
           "Name":
             $parser->get_short_title(nocase => 1);
           If the title can't be found, then get_short_title returns empty-
           string ("").
       $author_name   = $parser->get_author
           This works like get_title except that it returns the contents of
           the "=head1 AUTHOR\n\nParagraph...\n" section, assuming that that
           section isn't terribly long. To recognize a "=head1
           Author\n\nParagraph\n" section, pass the "nocase" option:
             $parser->get_author(nocase => 1);
           (This method tolerates "AUTHORS" instead of "AUTHOR" too.)
       $description_name = $parser->get_description
           This works like get_title except that it returns the contents of
           the "=head1 DESCRIPTION\n\nParagraph...\n" section, assuming that
           that section isn't terribly long. To recognize a "=head1
           Description\n\nParagraph\n" section, pass the "nocase" option:
             $parser->get_description(nocase => 1);
       $version_block = $parser->get_version
           This works like get_title except that it returns the contents of
           the "=head1 VERSION\n\n[BIG BLOCK]\n" block.  Note that this does
           NOT return the module's $VERSION!! To recognize a "=head1
           Version\n\n[BIG BLOCK]\n" section, pass the "nocase" option:
             $parser->get_version(nocase => 1);
NOTE
       You don't actually have to define a "run" method.  If you're writing a
       Pod-formatter class, you should define a "run" just so that users can
       call "parse_file" etc, but you don't have to.
       And if you're not writing a formatter class, but are instead just
       writing a program that does something simple with a Pod::PullParser
       object (and not an object of a subclass), then there's no reason to
       bother subclassing to add a "run" method.
SEE ALSO
       Pod::Simple
       Pod::Simple::PullParserToken -- and its subclasses
       Pod::Simple::PullParserStartToken, Pod::Simple::PullParserTextToken,
       and Pod::Simple::PullParserEndToken.
       HTML::TokeParser, which inspired this.
SUPPORT
       Questions or discussion about POD and Pod::Simple should be sent to the
       pod-people AT perl.org mail list. Send an empty email to
       pod-people-subscribe AT perl.org to subscribe.
       This module is managed in an open GitHub repository,
       <https://github.com/perl-pod/pod-simple/>;. Feel free to fork and
       contribute, or to clone <git://github.com/perl-pod/pod-simple.git>; and
       send patches!
       Patches against Pod::Simple are welcome. Please send bug reports to
       <bug-pod-simple AT rt.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 <sburke AT cpan.org>.  But don't
       bother him, he's retired.
       Pod::Simple is maintained by:
       o   Allison Randal "allison AT perl.org"
       o   Hans Dieter Pearcey "hdp AT cpan.org"
       o   David E. Wheeler "dwheeler AT cpan.org"
perl v5.26.3                      2016-11-29        Pod::Simple::PullParser(3)