NAME

       Data::DumpXML - Dump arbitrary data structures as XML

SYNOPSIS

        use Data::DumpXML qw(dump_xml);
        $xml = dump_xml(@list)

DESCRIPTION

       This module provides a single function called dump_xml() that takes a list of Perl values
       as its argument and produces a string as its result.  The string returned is an XML
       document that represents any Perl data structures passed to the function.  Reference loops
       are handled correctly.

       The following data model is used:

          data : scalar*
          scalar = undef ⎪ str ⎪ ref ⎪ alias
          ref : scalar ⎪ array ⎪ hash ⎪ glob ⎪ code
          array: scalar*
          hash: (key scalar)*

       The distribution comes with an XML schema and a DTD that more formally describe this
       structure.

       As an example of the XML documents produced, the following call:

         $a = bless [1,2], "Foo";
         dump_xml($a);

       produces:

         <?xml version="1.0" encoding="US-ASCII"?>
         <data xmlns="http://www.cpan.org/.../Data-DumpXML.xsd">
          <ref>
           <array class="Foo">
            <str>1</str>
            <str>2</str>
           </array>
          </ref>
         </data>

       If dump_xml() is called in a void context, then the dump is printed on STDERR
       automatically.  For compatibility with "Data::Dump", there is also an alias for dump_xml()
       called simply dump().

       "Data::DumpXML::Parser" is a class that can restore data structures dumped by dump_xml().

       Configuration variables

       The generated XML is influenced by a set of configuration variables.  If you modify them,
       then it is a good idea to localize the effect. For example:

         sub my_dump_xml {
             local $Data::DumpXML::INDENT = "";
             local $Data::DumpXML::XML_DECL = 0;
             local $Data::DumpXML::DTD_LOCATION = "";
             local $Data::DumpXML::NS_PREFIX = "dumpxml";

             return dump_xml(@_);
         }

       The variables are:

       $Data::DumpXML::INDENT
           You can set the variable $Data::DumpXML::INDENT to control the amount of indenting.
           The variable contains the whitespace you want to be used for each level of indenting.
           The default is a single space.  To suppress indenting, set it to "".

       $Data::DumpXML::INDENT_STYLE
           This variable controls where end element are placed.  If you set this variable to the
           value "Lisp" then end tags are not prefixed by NL.  This give a more compact output.

       $Data::DumpXML::XML_DECL
           This boolean variable controls whether an XML declaration should be prefixed to the
           output.  The XML declaration is the <?xml ...?> thingy.  The default is 1.  Set this
           value to 0 to suppress the declaration.

       $Data::DumpXML::NAMESPACE
           This variable contains the namespace used for the XML elements.  The default is to let
           this be a URI that actually resolve to the XML schema on CPAN.  Set it to "" to
           disable use of namespaces.

       $Data::DumpXML::NS_PREFIX
           This variable contains the namespace prefix to use on the elements.  The default is
           "", which means that a default namespace will be declared.

       $Data::DumpXML::SCHEMA_LOCATION
           This variable contains the location of the XML schema.  If this variable is non-empty,
           then an "xsi:schemaLocation" attribute is added to the top level "data" element.  The
           default is not to include this, as the location can be inferred from the default XML
           namespace used.

       $Data::DumpXML::DTD_LOCATION
           This variable contains the location of the DTD.  If this variable is non-empty, then a
           <!DOCTYPE ...> is included in the output.  The default is to point to the DTD on CPAN.
           Set it to "" to suppress the <!DOCTYPE ...> line.

BUGS

       Class names with 8-bit characters are dumped as Latin-1, but converted to UTF-8 when
       restored by the Data::DumpXML::Parser.

       The content of globs and subroutines are not dumped.  They are restored as the strings "**
       glob **" and "** code **".

       LVALUE and IO objects are not dumped at all.  They simply disappear from the restored data
       structure.

SEE ALSO

       Data::DumpXML::Parser, XML::Parser, XML::Dumper, Data::Dump

AUTHORS

       The "Data::DumpXML" module is written by Gisle Aas <gisle@aas.no>, based on "Data::Dump".

       The "Data::Dump" module was written by Gisle Aas, based on "Data::Dumper" by Gurusamy
       Sarathy <gsar@umich.edu>.

        Copyright 1998-2003 Gisle Aas.
        Copyright 1996-1998 Gurusamy Sarathy.

       This library is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.