=head1 NAME
Whatpm::HTML - An HTML Parser and Serializer
=head1 SYNOPSIS
use Whatpm::HTML;
my $s = q<...>;
# $doc = an empty DOM |Document| object
my $on_error = sub {
my %error = @_;
warn $error{type}, "\n";
};
Whatpm::HTML->parse_string ($s => $doc, $onerror);
## Now, |$doc| is the DOM representation of |$s|.
=head1 DESCRIPTION
The C module contains HTML parser and serializer.
The HTML parser can be used to construct the DOM tree representation
from an HTML document. The parsing and tree construction are done
as described in the Web Application 1.0 specification.
The HTML serializer can be used to obtain the HTML document representation
of a DOM tree (or a tree fragment thereof). The serialization
is performed as described in the Web Applications 1.0 specification
for C DOM attribute.
This module is part of Whatpm - Perl Modules for
Web Hypertext Application Technologies.
=head1 METHODS
=over 4
=item [I<$doc> =] Whatpm::HTML->parse_string (I<$s>, I<$doc>[, I<$onerror>]);
Parse a string I<$s> as an HTML document.
The first argument, I<$s>, MUST be a string. It is parsed
as a sequence of characters representing an HTML document.
The second argument, I<$doc>, MUST be an empty read-write
DOM C object. The HTML DOM tree is constructed
onto this C object.
The third argument, I<$onerror>, MUST be a reference to
the error handler code. Whenever a parse error is detected,
this code is invoked with an argument that contains a
useless string that might describe what is wrong.
The code MAY throw an exception, so that whole the parsing
process aborts. Otherwise, the parser will continue to
process the input. The code MUST NOT modify I<$s> or I<$doc>.
If it does, then the result is undefined.
This argument is optional; if missing, any
parse error makes that string being Ced.
B: To be a conforming user agent, the code MUST either
abort the processing by throwing an exception at the first
invocation or MUST continue the processing until the parser
stops.
The method returns the DOM C object (i.e. the second argument).
Note that the C module provides a non-conforming
implementation of DOM that only implements a subset that
is necessary for the purpose of C's parsing and
serializing.
With this module, creating a new HTML C object
from a string containing HTML document might be coded as:
use Whatpm::HTML;
use Whatpm::NanoDOM;
my $doc = Whatpm::HTML->parse_string
($s => Whatpm::NanoDOM::Document->new, $onerror);
=back
=head1 LOW-LEVEL INTERFACE
@@ TBW
=head2 Application Cache Selection Algorithm Hook
Once a parser I<$p> is instantiated by method C,
a C reference can be set to C<< I<$p>->{application_cache_selection} >>.
That C will be called back when the application cache selection
algorithm MUST be run per HTML5. By default,
C<< I<$p>->{application_cache_selection} >> is set to an empty subroutine.
The subroutine will be invoked with an argument I,
which is set to the manifest URI when the algorithm MUST be invoked
with a manifest URI, or is set to C when the algorithm MUST
be invoked without no manifest URI.
=head1 ERROR REPORTS
@@ TBW
The list of the error types is available in
Whatpm Error Types .
=head1 TO DO
Tokenizer should emit a sequence of character tokens as one token
to improve performance.
A method that accepts a byte stream as an input.
Charset detection algorithm.
Documentation for the setter of inner_html.
And there are many "TODO"s and "ISSUE"s in the source code.
=head1 SEE ALSO
Whatpm .
Whatpm Error Types
.
HTML5 .
L.
L.
L.
=head1 AUTHOR
Wakaba .
=head1 LICENSE
Copyright 2007 Wakaba
This library is free software; you can redistribute it
and/or modify it under the same terms as Perl itself.
=cut
# $Date: 2007/11/11 04:59:36 $