1HTML::Tree(3) User Contributed Perl Documentation HTML::Tree(3)
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6 HTML::Tree - build and scan parse-trees of HTML
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9 4.1
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12 use HTML::TreeBuilder;
13 my $tree = HTML::TreeBuilder->new();
14 $tree->parse_file($filename);
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16 # Then do something with the tree, using HTML::Element
17 # methods -- for example:
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19 $tree->dump
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21 # Finally:
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23 $tree->delete;
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26 HTML-Tree is a suite of Perl modules for making parse trees out of HTML
27 source. It consists of mainly two modules, whose documentation you
28 should refer to: HTML::TreeBuilder and HTML::Element.
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30 HTML::TreeBuilder is the module that builds the parse trees. (It uses
31 HTML::Parser to do the work of breaking the HTML up into tokens.)
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33 The tree that TreeBuilder builds for you is made up of objects of the
34 class HTML::Element.
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36 If you find that you do not properly understand the documentation for
37 HTML::TreeBuilder and HTML::Element, it may be because you are
38 unfamiliar with tree-shaped data structures, or with object-oriented
39 modules in general. Sean Burke has written some articles for The Perl
40 Journal ("www.tpj.com") that seek to provide that background. The full
41 text of those articles is contained in this distribution, as:
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43 HTML::Tree::AboutObjects
44 "User's View of Object-Oriented Modules" from TPJ17.
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46 HTML::Tree::AboutTrees
47 "Trees" from TPJ18
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49 HTML::Tree::Scanning
50 "Scanning HTML" from TPJ19
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52 Readers already familiar with object-oriented modules and tree-shaped
53 data structures should read just the last article. Readers without
54 that background should read the first, then the second, and then the
55 third.
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57 new
58 Redirects to HTML::TreeBuilder::new
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60 new_from_file
61 Redirects to HTML::TreeBuilder::new_from_file
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63 new_from_content
64 Redirects to HTML::TreeBuilder::new_from_content
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67 You can find documentation for this module with the perldoc command.
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69 perldoc HTML::Tree
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71 You can also look for information at:
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73 · AnnoCPAN: Annotated CPAN documentation
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75 http://annocpan.org/dist/HTML-Tree <http://annocpan.org/dist/HTML-
76 Tree>
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78 · CPAN Ratings
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80 http://cpanratings.perl.org/d/HTML-Tree
81 <http://cpanratings.perl.org/d/HTML-Tree>
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83 · RT: CPAN's request tracker
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85 http://rt.cpan.org/NoAuth/Bugs.html?Dist=HTML-Tree
86 <http://rt.cpan.org/NoAuth/Bugs.html?Dist=HTML-Tree>
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88 · Search CPAN
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90 http://search.cpan.org/dist/HTML-Tree
91 <http://search.cpan.org/dist/HTML-Tree>
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94 HTML::TreeBuilder, HTML::Element, HTML::Tagset, HTML::Parser,
95 HTML::DOMbo
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97 The book Perl & LWP by Sean M. Burke published by O'Reilly and
98 Associates, 2002. ISBN: 0-596-00178-9
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100 It has several chapters to do with HTML processing in general, and
101 HTML-Tree specifically. There's more info at:
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103 http://www.oreilly.com/catalog/perllwp/
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105 http://www.amazon.com/exec/obidos/ASIN/0596001789
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108 HTML::Tree is maintained in Subversion hosted at perl.org.
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110 http://svn.perl.org/modules/HTML-Tree
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112 The latest development work is always at:
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114 http://svn.perl.org/modules/HTML-Tree/trunk
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116 Any patches sent should be diffed against this repository.
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119 Thanks to Gisle Aas, Sean Burke and Andy Lester for their original
120 work.
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122 Thanks to Chicago Perl Mongers (http://chicago.pm.org) for their
123 patches submitted to HTML::Tree as part of the Phalanx project
124 (http://qa.perl.org/phalanx).
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126 Thanks to the following people for additional patches and
127 documentation: Terrence Brannon, Gordon Lack, Chris Madsen and Ricardo
128 Signes.
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131 Original HTML-Tree author Gisle Aas. Handed off to Sean M. Burke. and
132 Andy Lester. Currently maintained by Pete Krawczyk "<petek@cpan.org>".
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135 Copyright 1995-1998 Gisle Aas; 1999-2004 Sean M. Burke; 2005 Andy
136 Lester; 2006 Pete Krawczyk. (Except the articles contained in
137 HTML::Tree::AboutObjects, HTML::Tree::AboutTrees, and
138 HTML::Tree::Scanning, which are all copyright 2000 The Perl Journal.)
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140 Except for those three TPJ articles, the whole HTML-Tree distribution,
141 of which this file is a part, is free software; you can redistribute it
142 and/or modify it under the same terms as Perl itself.
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144 Those three TPJ articles may be distributed under the same terms as
145 Perl itself.
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147 The programs in this library are distributed in the hope that they will
148 be useful, but without any warranty; without even the implied warranty
149 of merchantability or fitness for a particular purpose.
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153perl v5.12.2 2010-12-20 HTML::Tree(3)