| Pod-Simple documentation | Contained in the Pod-Simple distribution. |
Pod::Simple::SimpleTree -- parse Pod into a simple parse tree
% cat ptest.pod
=head1 PIE
I like B<pie>!
% perl -MPod::Simple::SimpleTree -MData::Dumper -e \
"print Dumper(Pod::Simple::SimpleTree->new->parse_file(shift)->root)" \
ptest.pod
$VAR1 = [
'Document',
{ 'start_line' => 1 },
[
'head1',
{ 'start_line' => 1 },
'PIE'
],
[
'Para',
{ 'start_line' => 3 },
'I like ',
[
'B',
{},
'pie'
],
'!'
]
];
This class is of interest to people writing a Pod processor/formatter.
This class takes Pod and parses it, returning a parse tree made just of arrayrefs, and hashrefs, and strings.
This is a subclass of Pod::Simple and inherits all its methods.
This class is inspired by XML::Parser's "Tree" parsing-style, although it doesn't use exactly the same LoL format.
At the end of the parse, call $parser->root to get the
tree's top node.
Every element node in the parse tree is represented by an arrayref of
the form: [ elementname, \%attributes, ...subnodes... ].
See the example tree dump in the Synopsis, above.
Every text node in the tree is represented by a simple (non-ref)
string scalar. So you can test ref($node) to see whather you have
an element node or just a text node.
The top node in the tree is [ 'Document', \%attributes,
...subnodes... ]
Questions or discussion about POD and Pod::Simple should be sent to the pod-people@perl.org mail list. Send an empty email to pod-people-subscribe@perl.org to subscribe.
This module is managed in an open GitHub repository, http://github.com/theory/pod-simple/. Feel free to fork and contribute, or to clone git://github.com/theory/pod-simple.git and send patches!
Patches against Pod::Simple are welcome. Please send bug reports to <bug-pod-simple@rt.cpan.org>.
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.
Pod::Simple was created by Sean M. Burke <sburke@cpan.org>. But don't bother him, he's retired.
Pod::Simple is maintained by:
allison@perl.orghdp@cpan.orgdwheeler@cpan.org| Pod-Simple documentation | Contained in the Pod-Simple distribution. |
require 5; package Pod::Simple::SimpleTree; use strict; use Carp (); use Pod::Simple (); use vars qw( $ATTR_PAD @ISA $VERSION $SORT_ATTRS); $VERSION = '3.16'; BEGIN { @ISA = ('Pod::Simple'); *DEBUG = \&Pod::Simple::DEBUG unless defined &DEBUG; } __PACKAGE__->_accessorize( 'root', # root of the tree ); #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ sub _handle_element_start { # self, tagname, attrhash DEBUG > 2 and print "Handling $_[1] start-event\n"; my $x = [$_[1], $_[2]]; if($_[0]{'_currpos'}) { push @{ $_[0]{'_currpos'}[0] }, $x; # insert in parent's child-list unshift @{ $_[0]{'_currpos'} }, $x; # prefix to stack } else { DEBUG and print " And oo, it gets to be root!\n"; $_[0]{'_currpos'} = [ $_[0]{'root'} = $x ]; # first event! set to stack, and set as root. } DEBUG > 3 and print "Stack is now: ", join(">", map $_->[0], @{$_[0]{'_currpos'}}), "\n"; return; } sub _handle_element_end { # self, tagname DEBUG > 2 and print "Handling $_[1] end-event\n"; shift @{$_[0]{'_currpos'}}; DEBUG > 3 and print "Stack is now: ", join(">", map $_->[0], @{$_[0]{'_currpos'}}), "\n"; return; } sub _handle_text { # self, text DEBUG > 2 and print "Handling $_[1] text-event\n"; push @{ $_[0]{'_currpos'}[0] }, $_[1]; return; } # A bit of evil from the black box... please avert your eyes, kind souls. sub _traverse_treelet_bit { DEBUG > 2 and print "Handling $_[1] paragraph event\n"; my $self = shift; push @{ $self->{'_currpos'}[0] }, [@_]; return; } #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1; __END__