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Font::TTF::XMLparse(3)	       User Contributed Perl Documentation	   Font::TTF::XMLparse(3)

NAME
       Font::TTF::XMLparse - provides support for XML parsing. Requires Expat module
       XML::Parser::Expat

SYNOPSIS
	   use Font::TTF::Font;
	   use Font::TTF::XMLparse;

	   $f = Font::TTF::Font->new;
	   read_xml($f, $ARGV[0]);
	   $f->out($ARGV[1]);

DESCRIPTION
       This module contains the support routines for parsing XML and generating the Truetype font
       structures as a result. The module has been separated from the rest of the package in
       order to reduce the dependency that this would bring, of the whole package on XML::Parser.
       This way, people without the XML::Parser can still use the rest of the package.

       The package interacts with another package through the use of a context containing and
       element 'receiver' which is an object which can possibly receive one of the following
       messages:

       XML_start
	   This message is called when an open tag occurs. It is called with the context, tag
	   name and the attributes. The return value has no meaning.

       XML_end
	   This messages is called when a close tag occurs. It is called with the context, tag
	   name and attributes (held over from when the tag was opened). There are 3 possible
	   return values from such a message:

	   undef   This is the default return value indicating that default processing should
		   occur in which either the current element on the tree, or the text of this
		   element should be stored in the parent object.

	   $context
		   This magic value marks that the element should be deleted from the parent.
		   Nothing is stored in the parent. (This rather than '' is used to allow 0
		   returns.)

	   anything
		   Anything else is taken as the element content to be stored in the parent.

       In addition, the context hash passed to these messages contains the following keys:

       xml This is the expat xml object. The context is also available as $context->{'xml'}{'
	   mycontext'}. But that is a long winded way of not saying much!

       font
	   This is the base object that was passed in for XML parsing.

       receiver
	   This holds the current receiver of parsing events. It may be set in associated
	   application to adjust which objects should receive messages when. It is also stored in
	   the parsing stack to ensure that where an object changes it during XML_start, that
	   that same object that received XML_start will receive the corresponding XML_end

       stack
	   This is the parsing stack, used internally to hold the current receiver and attributes
	   for each element open, as a complete hierarchy back to the root element.

       tree
	   This element contains the storage tree corresponding to the parent of each element in
	   the stack. The default action is to push undef onto this stack during XML_start and
	   then to resolve this, either in the associated application (by changing
	   $context->{'tree'}[-1]) or during XML_end of a child element, by which time we know
	   whether we are dealing with an array or a hash or what.

       text
	   Character processing is to insert all the characters into the text element of the
	   context for available use later.

METHODS
POD ERRORS
       Hey! The above document had some coding errors, which are explained below:

       Around line 58:
	   =back doesn't take any parameters, but you said =back 4

       Around line 60:
	   =back doesn't take any parameters, but you said =back 4

       Around line 101:
	   =back doesn't take any parameters, but you said =back 4

perl v5.16.3				    2011-10-13			   Font::TTF::XMLparse(3)
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