XML::DOM::Parser

XML::DOM::Parser(3)   User Contributed Perl Documentation  XML::DOM::Parser(3)



NAME
       XML::DOM::Parser - An XML::Parser that builds XML::DOM document struc-
       tures

SYNOPSIS
        use XML::DOM;

        my $parser = new XML::DOM::Parser;
        my $doc = $parser->parsefile ("file.xml");
        $doc->dispose; # Avoid memory leaks - cleanup circular references

DESCRIPTION
       XML::DOM::Parser extends XML::Parser

       The XML::Parser module was written by Clark Cooper and is built on top
       of XML::Parser::Expat, which is a lower level interface to James
       Clark's expat library.

       XML::DOM::Parser parses XML strings or files and builds a data struc-
       ture that conforms to the API of the Document Object Model as described
       at <http://www.w3.org/TR/REC-DOM-Level-1>.  See the XML::Parser manpage
       for other additional properties of the XML::DOM::Parser class.  Note
       that the 'Style' property should not be used (it is set internally.)

       The XML::Parser NoExpand option is more or less supported, in that it
       will generate EntityReference objects whenever an entity reference is
       encountered in character data. I'm not sure how useful this is. Any
       comments are welcome.

       As described in the synopsis, when you create an XML::DOM::Parser
       object, the parse and parsefile methods create an XML::DOM::Document
       object from the specified input. This Document object can then be exam-
       ined, modified and written back out to a file or converted to a string.

       When using XML::DOM with XML::Parser version 2.19 and up, setting the
       XML::DOM::Parser option KeepCDATA to 1 will store CDATASections in
       CDATASection nodes, instead of converting them to Text nodes.  Subse-
       quent CDATASection nodes will be merged into one. Let me know if this
       is a problem.

Using LWP to parse URLs
       The parsefile() method now also supports URLs, e.g.
       http://www.erols.com/enno/xsa.xml.  It uses LWP to download the file
       and then calls parse() on the resulting string.  By default it will use
       a LWP::UserAgent that is created as follows:

        use LWP::UserAgent;
        $LWP_USER_AGENT = LWP::UserAgent->new;
        $LWP_USER_AGENT->env_proxy;

       Note that env_proxy reads proxy settings from environment variables,
       which is what I need to do to get thru our firewall. If you want to use
       a different LWP::UserAgent, you can either set it globally with:

        XML::DOM::Parser::set_LWP_UserAgent ($my_agent);

       or, you can specify it for a specific XML::DOM::Parser by passing it to
       the constructor:

        my $parser = new XML::DOM::Parser (LWP_UserAgent => $my_agent);

       Currently, LWP is used when the filename (passed to parsefile) starts
       with one of the following URL schemes: http, https, ftp, wais, gopher,
       or file (followed by a colon.)  If I missed one, please let me know.

       The LWP modules are part of libwww-perl which is available at CPAN.



perl v5.8.6                       2002-02-08               XML::DOM::Parser(3)