|
407
|
1 package IMPL::DOM::XMLReader;
|
|
|
2 use strict;
|
|
|
3 use warnings;
|
|
|
4
|
|
|
5 use parent qw(IMPL::Object IMPL::Object::Autofill);
|
|
|
6
|
|
|
7 use IMPL::Class::Property;
|
|
|
8 use XML::Parser;
|
|
|
9
|
|
|
10 use IMPL::require {
|
|
|
11 Schema => 'IMPL::DOM::Schema', # IMPL::DOM::Schema references IMPL::DOM::XML::Reader
|
|
|
12 Builder => 'IMPL::DOM::Navigator::Builder',
|
|
|
13 SimpleBuilder => 'IMPL::DOM::Navigator::SimpleBuilder'
|
|
|
14 };
|
|
|
15
|
|
|
16 __PACKAGE__->PassThroughArgs;
|
|
|
17
|
|
|
18 BEGIN {
|
|
|
19 public _direct property Navigator => prop_get | owner_set;
|
|
|
20 public _direct property SkipWhitespace => prop_get | owner_set;
|
|
|
21 private _direct property _current => prop_all;
|
|
|
22 private _direct property _text => prop_all;
|
|
|
23 private _direct property _textHistory => prop_all;
|
|
|
24 }
|
|
|
25
|
|
|
26 sub Parse {
|
|
|
27 my ($this,$in) = @_;
|
|
|
28
|
|
|
29 my $parser = new XML::Parser(
|
|
|
30 Handlers => {
|
|
|
31 Start => sub {shift; goto &OnStart($this,@_)},
|
|
|
32 End => sub {shift; goto &OnEnd($this,@_)},
|
|
|
33 Char => sub {shift; goto &OnChar($this,@_)}
|
|
|
34 }
|
|
|
35 );
|
|
|
36
|
|
|
37 $parser->parse($in);
|
|
|
38 }
|
|
|
39
|
|
|
40 sub ParseFile {
|
|
|
41 my ($this,$in) = @_;
|
|
|
42
|
|
|
43 my $parser = new XML::Parser(
|
|
|
44 Handlers => {
|
|
|
45 Start => sub {shift; unshift @_, $this; goto &_OnBegin;},
|
|
|
46 End => sub {shift; unshift @_, $this; goto &_OnEnd;},
|
|
|
47 Char => sub {shift; unshift @_, $this; goto &_OnChar;}
|
|
|
48 }
|
|
|
49 );
|
|
|
50
|
|
|
51 $parser->parsefile($in);
|
|
|
52 }
|
|
|
53
|
|
|
54 sub _OnBegin {
|
|
|
55 my ($this,$element,%attrs) = @_;
|
|
|
56
|
|
|
57 push @{$this->{$_textHistory}},$this->{$_text};
|
|
|
58 $this->{$_text} = "";
|
|
|
59 $this->{$_current} = $this->Navigator->NavigateCreate($element,%attrs);
|
|
|
60 }
|
|
|
61
|
|
|
62 sub _OnEnd {
|
|
|
63 my ($this,$element) = @_;
|
|
|
64 $this->{$_current}->nodeValue($this->{$_text}) if length $this->{$_text} and (not $this->{$SkipWhitespace} or $this->{$_text} =~ /\S/);
|
|
|
65 $this->{$_text} = pop @{$this->{$_textHistory}};
|
|
|
66 $this->{$_current} = $this->Navigator->Back;
|
|
|
67 }
|
|
|
68
|
|
|
69 sub _OnChar {
|
|
|
70 my ($this,$val) = @_;
|
|
|
71 $this->{$_text} .= $val;
|
|
|
72 }
|
|
|
73
|
|
|
74 sub LoadDocument {
|
|
|
75 my ($self,$file,$schema) = @_;
|
|
|
76
|
|
|
77 my $parser;
|
|
|
78 if ($schema) {
|
|
|
79 $schema = IMPL::DOM::Schema->LoadSchema($schema) if not ref $schema;
|
|
|
80 $parser = $self->new(
|
|
|
81 Navigator => IMPL::DOM::Navigator::Builder->new(
|
|
|
82 'IMPL::DOM::Document',
|
|
|
83 $schema
|
|
|
84 )
|
|
|
85 );
|
|
|
86 } else {
|
|
|
87 $parser = $self->new(
|
|
|
88 Navigator => IMPL::DOM::Navigator::SimpleBuilder->new()
|
|
|
89 );
|
|
|
90 }
|
|
|
91
|
|
|
92 $parser->ParseFile($file);
|
|
|
93 my $doc = $parser->Navigator->Document;
|
|
|
94 my @errors;
|
|
|
95 if ($schema) {
|
|
|
96 push @errors, $schema->Validate($doc);
|
|
|
97 }
|
|
|
98
|
|
|
99 if (wantarray) {
|
|
|
100 return $doc,\@errors;
|
|
|
101 } else {
|
|
|
102 die new IMPL::Exception("Loaded document doesn't match the schema", @errors) if @errors;
|
|
|
103 return $doc;
|
|
|
104 }
|
|
|
105 }
|
|
|
106
|
|
|
107 1;
|
|
|
108
|
|
|
109 __END__
|
|
|
110
|
|
|
111 =pod
|
|
|
112
|
|
|
113 =head1 SYNOPSIS
|
|
|
114
|
|
|
115 my $reader = new IMPL::DOM::XMLReader(Navigator => $DomBuilder);
|
|
|
116 my $obj = $reader->parsefile("data.xml");
|
|
|
117
|
|
|
118 =head1 DESCRIPTION
|
|
|
119
|
|
|
120 Простой класс, использующий навигатор для постороения документа. В зависимости от
|
|
|
121 используемого навигатора может быть получен различный результат.
|
|
|
122
|
|
|
123 Навигатор должен поодерживать методы C<NavigateCreate> и C<Back>
|
|
|
124
|
|
|
125 =head1 METHODS
|
|
|
126
|
|
|
127 =over
|
|
|
128
|
|
|
129 =item C<CTOR(Naviagtor => $builder)>
|
|
|
130
|
|
|
131 Создает новый экземпляр парсера, с указанным навигатором для построения документа
|
|
|
132
|
|
|
133 =item C<$obj->Parse($in)>
|
|
|
134
|
|
|
135 Строит документ. На вход получает либо xml строку, либо HANDLE.
|
|
|
136
|
|
|
137 =item C<$obj->ParseFile($fileName)>
|
|
|
138
|
|
|
139 Строит документ из файла с именем C<$fileName>.
|
|
|
140
|
|
|
141 =back
|
|
|
142
|
|
|
143 =cut
|
