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| 1 |  |  |  |  |  |  | package URL::Transform::using::HTML::Parser; | 
| 2 |  |  |  |  |  |  |  | 
| 3 |  |  |  |  |  |  | =head1 NAME | 
| 4 |  |  |  |  |  |  |  | 
| 5 |  |  |  |  |  |  | URL::Transform::using::HTML::Parser - HTML::Parse parsing of the html/xml for url transformation | 
| 6 |  |  |  |  |  |  |  | 
| 7 |  |  |  |  |  |  | =head1 SYNOPSIS | 
| 8 |  |  |  |  |  |  |  | 
| 9 |  |  |  |  |  |  | my $urlt = URL::Transform::using::HTML::Parser->new( | 
| 10 |  |  |  |  |  |  | 'output_function'    => sub { $output .= "@_" }, | 
| 11 |  |  |  |  |  |  | 'transform_function' => sub { return (join '|', @_) }, | 
| 12 |  |  |  |  |  |  | ); | 
| 13 |  |  |  |  |  |  | $urlt->parse_file($Bin.'/data/URL-Transform-01.html'); | 
| 14 |  |  |  |  |  |  |  | 
| 15 |  |  |  |  |  |  | print "and this is the output: ", $output; | 
| 16 |  |  |  |  |  |  |  | 
| 17 |  |  |  |  |  |  |  | 
| 18 |  |  |  |  |  |  | =head1 DESCRIPTION | 
| 19 |  |  |  |  |  |  |  | 
| 20 |  |  |  |  |  |  | Using this module you can performs an url transformation on the HTML/XML documents. | 
| 21 |  |  |  |  |  |  |  | 
| 22 |  |  |  |  |  |  | This module is used by L. | 
| 23 |  |  |  |  |  |  |  | 
| 24 |  |  |  |  |  |  | The url matching algorithm is taken from L/eg/hrefsub example | 
| 25 |  |  |  |  |  |  | script. | 
| 26 |  |  |  |  |  |  |  | 
| 27 |  |  |  |  |  |  | =cut | 
| 28 |  |  |  |  |  |  |  | 
| 29 | 1 |  |  | 1 |  | 1790 | use warnings; | 
|  | 1 |  |  |  |  | 2 |  | 
|  | 1 |  |  |  |  | 34 |  | 
| 30 | 1 |  |  | 1 |  | 4 | use strict; | 
|  | 1 |  |  |  |  | 2 |  | 
|  | 1 |  |  |  |  | 38 |  | 
| 31 |  |  |  |  |  |  |  | 
| 32 |  |  |  |  |  |  | our $VERSION = '0.01'; | 
| 33 |  |  |  |  |  |  |  | 
| 34 | 1 |  |  | 1 |  | 1171 | use HTML::Parser (); | 
|  | 1 |  |  |  |  | 6918 |  | 
|  | 1 |  |  |  |  | 59 |  | 
| 35 | 1 |  |  | 1 |  | 9 | use Carp::Clan; | 
|  | 1 |  |  |  |  | 2 |  | 
|  | 1 |  |  |  |  | 9 |  | 
| 36 | 1 |  |  | 1 |  | 174 | use English '$EVAL_ERROR'; | 
|  | 1 |  |  |  |  | 2 |  | 
|  | 1 |  |  |  |  | 7 |  | 
| 37 |  |  |  |  |  |  |  | 
| 38 | 1 |  |  | 1 |  | 124 | use URL::Transform (); | 
|  | 1 |  |  |  |  | 2 |  | 
|  | 1 |  |  |  |  | 43 |  | 
| 39 |  |  |  |  |  |  |  | 
| 40 |  |  |  |  |  |  |  | 
| 41 |  |  |  |  |  |  | # Construct a hash of tag names that may have links. | 
| 42 |  |  |  |  |  |  | my $_link_tags     = URL::Transform::link_tags(); | 
| 43 |  |  |  |  |  |  | my $_js_attributes = URL::Transform::js_attributes(); | 
| 44 |  |  |  |  |  |  |  | 
| 45 |  |  |  |  |  |  |  | 
| 46 | 1 |  |  | 1 |  | 6 | use base 'Class::Accessor::Fast'; | 
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|  | 1 |  |  |  |  | 1075 |  | 
| 47 |  |  |  |  |  |  |  | 
| 48 |  |  |  |  |  |  | =head1 PROPERTIES | 
| 49 |  |  |  |  |  |  |  | 
| 50 |  |  |  |  |  |  | output_function | 
| 51 |  |  |  |  |  |  | transform_function | 
| 52 |  |  |  |  |  |  | parser_for | 
| 53 |  |  |  |  |  |  |  | 
| 54 |  |  |  |  |  |  | _html_parser | 
| 55 |  |  |  |  |  |  |  | 
| 56 |  |  |  |  |  |  | =cut | 
| 57 |  |  |  |  |  |  |  | 
| 58 |  |  |  |  |  |  | __PACKAGE__->mk_accessors(qw{ | 
| 59 |  |  |  |  |  |  | output_function | 
| 60 |  |  |  |  |  |  | transform_function | 
| 61 |  |  |  |  |  |  | parser_for | 
| 62 |  |  |  |  |  |  |  | 
| 63 |  |  |  |  |  |  | _html_parser | 
| 64 |  |  |  |  |  |  | }); | 
| 65 |  |  |  |  |  |  |  | 
| 66 |  |  |  |  |  |  | =head1 METHODS | 
| 67 |  |  |  |  |  |  |  | 
| 68 |  |  |  |  |  |  | =cut | 
| 69 |  |  |  |  |  |  |  | 
| 70 |  |  |  |  |  |  |  | 
| 71 |  |  |  |  |  |  | =head2 new | 
| 72 |  |  |  |  |  |  |  | 
| 73 |  |  |  |  |  |  | Object constructor. | 
| 74 |  |  |  |  |  |  |  | 
| 75 |  |  |  |  |  |  | Requires: | 
| 76 |  |  |  |  |  |  |  | 
| 77 |  |  |  |  |  |  | output_function | 
| 78 |  |  |  |  |  |  | transform_function | 
| 79 |  |  |  |  |  |  |  | 
| 80 |  |  |  |  |  |  | Optional: | 
| 81 |  |  |  |  |  |  |  | 
| 82 |  |  |  |  |  |  | parser_for | 
| 83 |  |  |  |  |  |  |  | 
| 84 |  |  |  |  |  |  | =cut | 
| 85 |  |  |  |  |  |  |  | 
| 86 |  |  |  |  |  |  | sub new { | 
| 87 | 5 |  |  | 5 | 1 | 102 | my $class = shift; | 
| 88 |  |  |  |  |  |  |  | 
| 89 | 5 |  |  |  |  | 35 | my $self = $class->SUPER::new({ @_ }); | 
| 90 |  |  |  |  |  |  |  | 
| 91 | 5 |  |  |  |  | 74 | my $output_function    = $self->output_function; | 
| 92 | 5 |  |  |  |  | 38 | my $transform_function = $self->transform_function; | 
| 93 |  |  |  |  |  |  |  | 
| 94 | 5 | 50 |  |  |  | 34 | croak 'pass print function' | 
| 95 |  |  |  |  |  |  | if not (ref $output_function eq 'CODE'); | 
| 96 |  |  |  |  |  |  |  | 
| 97 | 5 | 50 |  |  |  | 14 | croak 'pass transform url function' | 
| 98 |  |  |  |  |  |  | if not (ref $transform_function eq 'CODE'); | 
| 99 |  |  |  |  |  |  |  | 
| 100 | 5 |  |  | 26 |  | 23 | $transform_function = sub { $self->transform_function_wrapper(@_) }; | 
|  | 26 |  |  |  |  | 57 |  | 
| 101 |  |  |  |  |  |  |  | 
| 102 | 5 |  |  |  |  | 43 | my $html_parser = HTML::Parser->new(api_version => 3); | 
| 103 |  |  |  |  |  |  |  | 
| 104 |  |  |  |  |  |  | # The default is to print everything as it is. | 
| 105 |  |  |  |  |  |  | $html_parser->handler( | 
| 106 |  |  |  |  |  |  | default => sub { | 
| 107 | 15 |  |  | 15 |  | 659 | $output_function->(@_); | 
| 108 | 5 |  |  |  |  | 199 | }, "text" | 
| 109 |  |  |  |  |  |  | ); | 
| 110 |  |  |  |  |  |  |  | 
| 111 |  |  |  |  |  |  | # cleanup current tag on every end tag | 
| 112 |  |  |  |  |  |  | # should work fine for our purpouse as we are not interrested in nested tags | 
| 113 | 5 |  |  |  |  | 10 | my $current_tag = ''; | 
| 114 |  |  |  |  |  |  | $html_parser->handler( | 
| 115 |  |  |  |  |  |  | end   => sub { | 
| 116 | 47 |  |  | 47 |  | 308 | $current_tag = ''; | 
| 117 | 47 |  |  |  |  | 64 | my $text = shift; | 
| 118 |  |  |  |  |  |  |  | 
| 119 |  |  |  |  |  |  | # rename  to  in case javascript is removed | 
| 120 | 47 | 50 |  |  |  | 118 | if ($self->parser_for->('application/x-javascript') eq 'Remove') { | 
| 121 | 47 | 100 |  |  |  | 117 | $text = '' if $text =~ m{^ | 
| 122 |  |  |  |  |  |  | } | 
| 123 |  |  |  |  |  |  |  | 
| 124 | 47 |  |  |  |  | 171 | $output_function->($text); | 
| 125 | 5 |  |  |  |  | 56 | }, "text" | 
| 126 |  |  |  |  |  |  | ); | 
| 127 |  |  |  |  |  |  |  | 
| 128 |  |  |  |  |  |  | # Links inside the text of the tag (just |