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HTML::TreeBuilder 3.23

  Date Added: May 14, 2010  |  Visits: 1.091

HTML::TreeBuilder

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HTML::TreeBuilder is a parser that builds a HTML syntax tree. SYNOPSIS foreach my $file_name (@ARGV) { my $tree = HTML::TreeBuilder->new; # empty tree $tree->parse_file($file_name); print "Hey, heres a dump of the parse tree of $file_name:n"; $tree->dump; # a method we inherit from HTML::Element print "And here it is, bizarrely rerendered as HTML:n", $tree->as_HTML, "n"; # Now that were done with it, we must destroy it. $tree = $tree->delete; } (This class is part of the HTML::Tree dist.) This class is for HTML syntax trees that get built out of HTML source. The way to use it is to: 1. start a new (empty) HTML::TreeBuilder object, 2. then use one of the methods from HTML::Parser (presumably with $tree->parse_file($filename) for files, or with $tree->parse($document_content) and $tree->eof if youve got the content in a string) to parse the HTML document into the tree $tree. (You can combine steps 1 and 2 with the "new_from_file" or "new_from_content" methods.) 2b. call $root->elementify() if you want. 3. do whatever you need to do with the syntax tree, presumably involving traversing it looking for some bit of information in it, 4. and finally, when youre done with the tree, call $tree->delete() to erase the contents of the tree from memory. This kind of thing usually isnt necessary with most Perl objects, but its necessary for TreeBuilder objects. See HTML::Element for a more verbose explanation of why this is the case..

Requirements: No special requirements
Platforms: Linux
Keyword: File Html Syntax Htmltreebuilder Libraries New Parse Parser Programming Syntax Tree Treebuilder
Users rating: 0/10

License: Freeware Size: 122.88 KB
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