whatpm/Whatpm/ContentChecker.pod

=head1 NAME

Whatpm::ContentChecker - DOM Conformance Checker

=head1 SYNOPSIS

  use Whatpm::ContentChecker;
  
  Whatpm::ContentChecker->check_document ($doc, sub {
    my %arg = @_;
    warn get_node_path ($arg{node}), ": ",
        ($arg{level} || "Error"), ": ",
        $arg{type}, "\n";
  });
  
  Whatpm::ContentChecker->check_element ($doc, sub {
    my %arg = @_;
    warn get_node_path ($arg{node}), ": ",
        ($arg{level} || "Error"), ": ",
        $arg{type}, "\n";
  });

=head1 DESCRIPTION

The C<Whatpm::ContentChecker> Perl module contains two methods
to validate DOM tree for its conformance to the markup language
in use.

This module is part of Whatpm, Perl Modules for
Web Hypertext Application Technologies, which is a subproject
of manakai.

=head1 METHODS

This module contains two static methods:

=over 4

=item Whatpm::ContentChecker->check_document (I<$document>, I<$onerror>);

Checks a document, I<$document>, and its descendant for their
conformance.  If there is an error or a warnign, then the
I<$onerror> C<CODE> is invoked with named arguments same
as ones for the method C<check_element>.

=item Whatpm::ContentChecker->check_element (I<$element>, I<$onerror>);

Checks an element, I<$element>, and its descendant for their conformance.
If there is an error or a warning, then the I<$onerror> C<CODE>
is invoked with named arguments:

=over 4

=item level (Might be C<undef>)

A string which describes the severity of the error or warning.
For the list of the severities, see
<http://suika.fam.cx/gate/2005/sw/Whatpm%20Error%20Types>.

=item node (Always specified)

The node with which the error is detected.

=item type (Always specified)

A string which describes the type of the error or warning.
For the list of the errors and warnings, see
<http://suika.fam.cx/gate/2005/sw/Whatpm%20Error%20Types>.

=back

=back

=head1 BUGS

This conformance checker is work in progress; it I<might> not be
able to detect all the errors in the DOM tree, and it I<might> 
detect an error for a node that is conforming in fact.

=head1 SEE ALSO

L<Whatpm::ContentChecker::Atom>

L<Whatpm::ContentChecker::HTML>

<http://suika.fam.cx/gate/2005/sw/Whatpm%20Error%20Types>

=head1 AUTHOR

Wakaba <w@suika.fam.cx>

=head1 LICENSE

Copyright 2007 Wakaba <w@suika.fam.cx>

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

=cut

# $Date: 2007/05/02 13:44:34 $
1	wakaba	1.1	=head1 NAME
2
3			Whatpm::ContentChecker - DOM Conformance Checker
4
5			=head1 SYNOPSIS
6
7			use Whatpm::ContentChecker;
8
9			Whatpm::ContentChecker->check_document ($doc, sub {
10			my %arg = @_;
11			warn get_node_path ($arg{node}), ": ",
12			($arg{level} \|\| "Error"), ": ",
13			$arg{type}, "\n";
14			});
15
16			Whatpm::ContentChecker->check_element ($doc, sub {
17			my %arg = @_;
18			warn get_node_path ($arg{node}), ": ",
19			($arg{level} \|\| "Error"), ": ",
20			$arg{type}, "\n";
21			});
22
23			=head1 DESCRIPTION
24
25			The C<Whatpm::ContentChecker> Perl module contains two methods
26			to validate DOM tree for its conformance to the markup language
27			in use.
28
29			This module is part of Whatpm, Perl Modules for
30			Web Hypertext Application Technologies, which is a subproject
31			of manakai.
32
33			=head1 METHODS
34
35			This module contains two static methods:
36
37			=over 4
38
39			=item Whatpm::ContentChecker->check_document (I<$document>, I<$onerror>);
40
41			Checks a document, I<$document>, and its descendant for their
42			conformance. If there is an error or a warnign, then the
43			I<$onerror> C<CODE> is invoked with named arguments same
44			as ones for the method C<check_element>.
45
46			=item Whatpm::ContentChecker->check_element (I<$element>, I<$onerror>);
47
48			Checks an element, I<$element>, and its descendant for their conformance.
49			If there is an error or a warning, then the I<$onerror> C<CODE>
50			is invoked with named arguments:
51
52			=over 4
53
54			=item level (Might be C<undef>)
55
56			A string which describes the severity of the error or warning.
57			For the list of the severities, see
58			<http://suika.fam.cx/gate/2005/sw/Whatpm%20Error%20Types>.
59
60			=item node (Always specified)
61
62			The node with which the error is detected.
63
64			=item type (Always specified)
65
66			A string which describes the type of the error or warning.
67			For the list of the errors and warnings, see
68			<http://suika.fam.cx/gate/2005/sw/Whatpm%20Error%20Types>.
69
70			=back
71
72			=back
73
74			=head1 BUGS
75
76			This conformance checker is work in progress; it I<might> not be
77			able to detect all the errors in the DOM tree, and it I<might>
78			detect an error for a node that is conforming in fact.
79
80			=head1 SEE ALSO
81
82			L<Whatpm::ContentChecker::Atom>
83
84			L<Whatpm::ContentChecker::HTML>
85
86			<http://suika.fam.cx/gate/2005/sw/Whatpm%20Error%20Types>
87
88			=head1 AUTHOR
89
90			Wakaba <w@suika.fam.cx>
91
92			=head1 LICENSE
93
94			Copyright 2007 Wakaba <w@suika.fam.cx>
95
96			This library is free software; you can redistribute it
97			and/or modify it under the same terms as Perl itself.
98
99			=cut
100
101			# $Date: 2007/05/02 13:44:34 $