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[dh-make-perl] / dev / i386 / libpod-simple-perl / libpod-simple-perl-3.07 / lib / Pod / Simple / SimpleTree.pm

diff --git a/dev/i386/libpod-simple-perl/libpod-simple-perl-3.07/lib/Pod/Simple/SimpleTree.pm b/dev/i386/libpod-simple-perl/libpod-simple-perl-3.07/lib/Pod/Simple/SimpleTree.pm
new file mode 100644 (file)
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+
+
+require 5;
+package Pod::Simple::SimpleTree;
+use strict;
+use Carp ();
+use Pod::Simple ();
+use vars qw( $ATTR_PAD @ISA $VERSION $SORT_ATTRS);
+$VERSION = '2.02';
+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__
+
+=head1 NAME
+
+Pod::Simple::SimpleTree -- parse Pod into a simple parse tree 
+
+=head1 SYNOPSIS
+
+  % 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'
+              ],
+              '!'
+            ]
+          ];
+
+=head1 DESCRIPTION
+
+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 L<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.
+
+=head1 METHODS
+
+At the end of the parse, call C<< $parser->root >> to get the
+tree's top node.
+
+=head1 Tree Contents
+
+Every element node in the parse tree is represented by an arrayref of
+the form: C<[ I<elementname>, \%attributes, I<...subnodes...> ]>.
+See the example tree dump in the Synopsis, above.
+
+Every text node in the tree is represented by a simple (non-ref)
+string scalar.  So you can test C<ref($node)> to see whather you have
+an element node or just a text node.
+
+The top node in the tree is C<[ 'Document', \%attributes,
+I<...subnodes...> ]>
+
+
+=head1 SEE ALSO
+
+L<Pod::Simple>
+
+L<perllol>
+
+L<The "Tree" subsubsection in XML::Parser|XML::Parser/"Tree">
+
+=head1 COPYRIGHT AND DISCLAIMERS
+
+Copyright (c) 2002 Sean M. Burke.  All rights reserved.
+
+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.
+
+=head1 AUTHOR
+
+Sean M. Burke C<sburke@cpan.org>
+
+=cut
+