1HTML::WikiConverter::NoUrsmearliCzoenrt(r3i)buted Perl DHoTcMuLm:e:nWtiaktiiCoonnverter::Normalizer(3)
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NAME

6       HTML::WikiConverter::Normalizer - Convert CSS styles to (roughly)
7       corresponding HTML
8

SYNOPSIS

10         use HTML::TreeBuilder;
11         use HTML::WikiConverter::Normalizer;
12
13         my $tree = new HTML::TreeBuilder();
14         $tree->parse( '<p><font style="font-style:italic; font-weight:bold">text</font></p>' );
15
16         my $norm = new HTML::WikiConverter::Normalizer();
17         $norm->normalize($tree);
18
19         # Roughly gives "<p><font><b><i>text</i></b></font></p>"
20         print $tree->as_HTML();
21

DESCRIPTION

23       HTML::WikiConverter dialects convert HTML into wiki markup. Most (if
24       not all) know nothing about CSS, nor do they take it into consideration
25       when performing html-to-wiki conversion. But there is no good reason
26       for, say, "<font style="font-weight:bold">text</font>" not to be
27       converted into '''text''' in the MediaWiki dialect. The same is true of
28       other dialects, all of which should be able to use CSS information to
29       produce wiki markup.
30
31       The issue becomes especially problematic when considering that several
32       WYSIWYG HTML editors (e.g. Mozilla's) produce this sort of CSS-heavy
33       HTML. Prior to "HTML::WikiConverter::Normalizer", this HTML would have
34       been essentially converted to text, the CSS information having been
35       ignored by "HTML::WikiConverter".
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37       "HTML::WikiConverter::Normalizer" avoids this with a few simple
38       transformations that convert CSS styles into HTML tags.
39

METHODS

41   new
42         my $norm = new HTML::WikiConverter::Normalizer();
43
44       Constructs a new normalizer
45
46   normalize
47         $norm->normalize($elem);
48
49       Normalizes $elem and all its descendents, where $elem is an
50       HTML::Element object.
51

SUBCLASSING

53       The following methods may be useful to subclasses.
54
55   handlers
56         my $handlers = $self->handlers;
57
58       Class method returning reference to an array of handlers used to
59       convert CSS to HTML. Each handler is a hashref that specifies the CSS
60       properties and values to match, and the HTML tags and attributes the
61       matched properties will be converted to.
62
63       The "type", "name", "value", and "tag" keys may be used to match an
64       element's property or attribute. "type" may be either "css" if matching
65       a CSS property (in which case "name" must contain the name of the
66       property, and "value" must contain the property value to match) or
67       "attr" if matching an HTML tag attribute (in which case "name" must
68       contain the name of the attribute, and "value" must contain the
69       attribute value to match).
70
71       "value" may be a string (for an exact match), regex (which will be used
72       to match against the element's property or attribute value), coderef
73       (which will be passed the property or attribute value and is expected
74       to return true on match, false otherwise), or "*" (which matches any
75       property or attribute value). A tag or list of tags can also be matched
76       with the "tag" key, which takes either a string or an arrayref.
77
78       To specify what actions the handler will take, the "new_tag",
79       "new_attr", and "normalizer" keys are used. "new_tag" is required and
80       indicates the name of the tag that will be created. "attribute" is
81       optional and indicates the name of the attribute in the new tag that
82       will take the value of the original CSS property. If a coderef is given
83       as the "normalizer", it will be passed the value of the
84       property/attribute and should return one suitable to be assigned to the
85       new tag attribute.
86

SEE ALSO

88       CSS
89

AUTHOR

91       David J. Iberri, "<diberri@cpan.org>"
92

BUGS

94       Please report any bugs or feature requests to "bug-html-wikiconverter
95       at rt.cpan.org", or through the web interface at
96       <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=HTML-WikiConverter>.  I
97       will be notified, and then you'll automatically be notified of progress
98       on your bug as I make changes.
99

101       Copyright 2006 David J. Iberri, all rights reserved.
102
103       This program is free software; you can redistribute it and/or modify it
104       under the same terms as Perl itself.
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108perl v5.34.0                      2021-07-22HTML::WikiConverter::Normalizer(3)
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