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1 | package HTML::Zoom::Parser::BuiltIn; |
2 | |
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3 | use strictures 1; |
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4 | use base qw(HTML::Zoom::SubObject); |
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5 | |
6 | sub html_to_events { |
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7 | my ($self, $text) = @_; |
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8 | my @events; |
9 | _hacky_tag_parser($text => sub { push @events, $_[0] }); |
10 | return \@events; |
11 | } |
12 | |
13 | sub html_to_stream { |
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14 | my ($self, $text) = @_; |
15 | return $self->_zconfig->stream_utils |
16 | ->stream_from_array(@{$self->html_to_events($text)}); |
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17 | } |
18 | |
19 | sub _hacky_tag_parser { |
20 | my ($text, $handler) = @_; |
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21 | $text =~ m{^([^<]*)}g; |
22 | if ( length $1 ) { # leading PCDATA |
23 | $handler->({ type => 'TEXT', raw => $1 }); |
24 | } |
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25 | while ( |
26 | $text =~ m{ |
27 | ( |
28 | (?:[^<]*) < (?: |
29 | ( / )? ( [^/!<>\s"'=]+ ) |
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30 | ( (?:"[^"]*"|'[^']*'|[^/"'<>])+? )? |
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31 | | |
32 | (!-- .*? -- | ![^\-] .*? ) |
33 | ) (\s*/\s*)? > |
34 | ) |
35 | ([^<]*) |
36 | }sxg |
37 | ) { |
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38 | my ($whole, $is_close, $tag_name, $attributes, $is_special, |
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39 | $in_place_close, $content) |
40 | = ($1, $2, $3, $4, $5, $6, $7, $8); |
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41 | if ($is_special) { |
42 | $handler->({ type => 'SPECIAL', raw => $whole }); |
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43 | } else { |
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44 | $tag_name =~ tr/A-Z/a-z/; |
45 | if ($is_close) { |
46 | $handler->({ type => 'CLOSE', name => $tag_name, raw => $whole }); |
47 | } else { |
48 | $attributes = '' if !defined($attributes) or $attributes =~ /^ +$/; |
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49 | $handler->({ |
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50 | type => 'OPEN', |
51 | name => $tag_name, |
52 | is_in_place_close => $in_place_close, |
53 | _hacky_attribute_parser($attributes), |
54 | raw_attrs => $attributes||'', |
55 | raw => $whole, |
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56 | }); |
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57 | if ($in_place_close) { |
58 | $handler->({ |
59 | type => 'CLOSE', name => $tag_name, raw => '', |
60 | is_in_place_close => 1 |
61 | }); |
62 | } |
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63 | } |
64 | } |
65 | if (length $content) { |
66 | $handler->({ type => 'TEXT', raw => $content }); |
67 | } |
68 | } |
69 | } |
70 | |
71 | sub _hacky_attribute_parser { |
72 | my ($attr_text) = @_; |
73 | my (%attrs, @attr_names); |
74 | while ( |
75 | $attr_text =~ m{ |
76 | ([^\s\=\"\']+)(\s*=\s*(?:(")(.*?)"|(')(.*?)'|([^'"\s=]+)['"]*))? |
77 | }sgx |
78 | ) { |
79 | my $key = $1; |
80 | my $test = $2; |
81 | my $val = ( $3 ? $4 : ( $5 ? $6 : $7 )); |
82 | my $lckey = lc($key); |
83 | if ($test) { |
84 | $attrs{$lckey} = _simple_unescape($val); |
85 | } else { |
86 | $attrs{$lckey} = $lckey; |
87 | } |
88 | push(@attr_names, $lckey); |
89 | } |
90 | (attrs => \%attrs, attr_names => \@attr_names); |
91 | } |
92 | |
93 | sub _simple_unescape { |
94 | my $str = shift; |
95 | $str =~ s/"/"/g; |
96 | $str =~ s/</</g; |
97 | $str =~ s/>/>/g; |
98 | $str =~ s/&/&/g; |
99 | $str; |
100 | } |
101 | |
102 | sub _simple_escape { |
103 | my $str = shift; |
104 | $str =~ s/&/&/g; |
105 | $str =~ s/"/"/g; |
106 | $str =~ s/</</g; |
107 | $str =~ s/>/>/g; |
108 | $str; |
109 | } |
110 | |
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111 | sub html_escape { _simple_escape($_[1]) } |
112 | |
113 | sub html_unescape { _simple_unescape($_[1]) } |
114 | |
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115 | 1; |