XML::XSLT(3)						User Contributed Perl Documentation					      XML::XSLT(3)

NAME

       XML::XSLT - A perl module for processing XSLT

       xsl_output_method
	   Get or set the <xsl:output method= attribute.  Valid arguments are 'html', 'text' and 'xml'

SYNOPSIS

	use XML::XSLT;

	my $xslt = XML::XSLT->new ($xsl, warnings => 1);

	$xslt->transform ($xmlfile);
	print $xslt->toString;

	$xslt->dispose();

DESCRIPTION

       This module implements the W3C's XSLT specification. The goal is full implementation of this spec, but we have not yet achieved that.
       However, it already works well.	See "XML::XSLT Commands" for the current status of each command.

       XML::XSLT makes use of XML::DOM and LWP::Simple, while XML::DOM uses XML::Parser.  Therefore XML::Parser, XML::DOM and LWP::Simple have to
       be installed properly for XML::XSLT to run.

Specifying Sources
       The stylesheets and the documents may be passed as filenames, file handles regular strings, string references or DOM-trees.  Functions that
       require sources (e.g. new), will accept either a named parameter or simply the argument.

       Either of the following are allowed:

	my $xslt = XML::XSLT->new($xsl);
	my $xslt = XML::XSLT->new(Source => $xsl);

       In documentation, the named parameter `Source' is always shown, but it is never required.

   METHODS
       new(Source => $xml [, %args])
	   Returns a new XSLT parser object.  Valid flags are:

	   DOMparser_args
	     Hashref of arguments to pass to the XML::DOM::Parser object's parse method.

	   variables
	     Hashref of variables and their values for the stylesheet.

	   base
	     Base of URL for file inclusion.

	   debug
	     Turn on debugging messages.

	   warnings
	     Turn on warning messages.

	   indent
	     Starting amount of indention for debug messages.  Defaults to 0.

	   indent_incr
	     Amount to indent each level of debug message.  Defaults to 1.

       open_xml(Source => $xml [, %args])
	   Gives the XSLT object new XML to process.  Returns an XML::DOM object corresponding to the XML.

	   base
	       The base URL to use for opening documents.

	   parser_args
	       Arguments to pase to the parser.

       open_xsl(Source => $xml, [, %args])
	   Gives the XSLT object a new stylesheet to use in processing XML.  Returns an XML::DOM object corresponding to the stylesheet.  Any
	   arguments present are passed to the XML::DOM::Parser.

	   base
	       The base URL to use for opening documents.

	   parser_args
	       Arguments to pase to the parser.

       process(%variables)
	   Processes the previously loaded XML through the stylesheet using the variables set in the argument.

       transform(Source => $xml [, %args])
	   Processes the given XML through the stylesheet.  Returns an XML::DOM object corresponding to the transformed XML.  Any arguments
	   present are passed to the XML::DOM::Parser.

       serve(Source => $xml [, %args])
	   Processes the given XML through the stylesheet.  Returns a string containg the result.  Example:

	     use XML::XSLT qw(serve);

	     $xslt = XML::XSLT->new($xsl);
	     print $xslt->serve $xml;

	   http_headers
	       If true, then prepends the appropriate HTTP headers (e.g. Content-Type, Content-Length);

	       Defaults to true.

	   xml_declaration
	       If true, then the result contains the appropriate <?xml?> header.

	       Defaults to true.

	   xml_version
	       The version of the XML.

	       Defaults to 1.0.

	   doctype
	       The type of DOCTYPE this document is.  Defaults to SYSTEM.

       toString
	   Returns the result of transforming the XML with the stylesheet as a string.

       to_dom
	   Returns the result of transforming the XML with the stylesheet as an XML::DOM object.

       media_type
	   Returns the media type (aka mime type) of the object.

       dispose
	   Executes the "dispose" method on each XML::DOM object.

XML
::XSLT Commands
       xsl:apply-imports	no
	   Not supported yet.

       xsl:apply-templates	limited
	   Attribute 'select' is supported to the same extent as xsl:value-of supports path selections.

	   Not supported yet: - attribute 'mode' - xsl:sort and xsl:with-param in content

       xsl:attribute		partially
	   Adds an attribute named to the value of the attribute 'name' and as value the stringified content-template.

	   Not supported yet: - attribute 'namespace'

       xsl:attribute-set	yes
	   Partially

       xsl:call-template	yes
	   Takes attribute 'name' which selects xsl:template's by name.

	   Weak support: - xsl:with-param (select attrib not supported)

	   Not supported yet: - xsl:sort

       xsl:choose		yes
	   Tests sequentially all xsl:whens until one succeeds or until an xsl:otherwise is found. Limited test support, see xsl:when

       xsl:comment		yes
	   Supported.

       xsl:copy 		partially
       xsl:copy-of		limited
	   Attribute 'select' functions as well as with xsl:value-of

       xsl:decimal-format	no
	   Not supported yet.

       xsl:element		yes
       xsl:fallback		no
	   Not supported yet.

       xsl:for-each		limited
	   Attribute 'select' functions as well as with xsl:value-of

	   Not supported yet: - xsl:sort in content

       xsl:if			limited
	   Identical to xsl:when, but outside xsl:choose context.

       xsl:import		no
	   Not supported yet.

       xsl:include		yes
	   Takes attribute href, which can be relative-local, absolute-local as well as an URL (preceded by identifier http:).

       xsl:key			no
	   Not supported yet.

       xsl:message		no
	   Not supported yet.

       xsl:namespace-alias	no
	   Not supported yet.

       xsl:number		no
	   Not supported yet.

       xsl:otherwise		yes
	   Supported.

       xsl:output		limited
	   Only the initial xsl:output element is used.  The "text" output method is not supported, but shouldn't be difficult to implement.  Only
	   the "doctype-public", "doctype-system", "omit-xml-declaration", "method", and "encoding" attributes have any support.

       xsl:param	   experimental
	   Synonym for xsl:variable (currently). See xsl:variable for support.

       xsl:preserve-space	no
	   Not supported yet. Whitespace is always preserved.

       xsl:processing-instruction    yes
	   Supported.

       xsl:sort 		no
	   Not supported yet.

       xsl:strip-space		     no
	   Not supported yet. No whitespace is stripped.

       xsl:stylesheet		limited
	   Minor namespace support: other namespace than 'xsl:' for xsl-commands is allowed if xmlns-attribute is present. xmlns URL is verified.
	   Other attributes are ignored.

       xsl:template		limited
	   Attribute 'name' and 'match' are supported to minor extend.	('name' must match exactly and 'match' must match with full path or no
	   path)

	   Not supported yet: - attributes 'priority' and 'mode'

       xsl:text 		yes
	   Supported.

       xsl:transform		limited
	   Synonym for xsl:stylesheet

       xsl:value-of		limited
	   Inserts attribute or element values. Limited support:

	   <xsl:value-of select="."/>

	   <xsl:value-of select="/root-elem"/>

	   <xsl:value-of select="elem"/>

	   <xsl:value-of select="//elem"/>

	   <xsl:value-of select="elem[n]"/>

	   <xsl:value-of select="//elem[n]"/>

	   <xsl:value-of select="@attr"/>

	   <xsl:value-of select="text()"/>

	   <xsl:value-of select="processing-instruction()"/>

	   <xsl:value-of select="comment()"/>

	   and combinations of these.

	   Not supported yet: - attribute 'disable-output-escaping'

       xsl:variable		partial or from literal text in the stylesheet.
       xsl:when 		limited
	   Only inside xsl:choose. Limited test support:

	   <xsl:when test="@attr='value'">

	   <xsl:when test="elem='value'">

	   <xsl:when test="path/[@attr='value']">

	   <xsl:when test="path/[elem='value']">

	   <xsl:when test="path">

	   path is supported to the same extend as with xsl:value-of

       xsl:with-param		experimental
	   It is currently not functioning. (or is it?)

SUPPORT

       General information, bug reporting tools, the latest version, mailing lists, etc. can be found at the XML::XSLT homepage:

	 http://xmlxslt.sourceforge.net/

DEPRECATIONS

       Methods and interfaces from previous versions that are not documented in this version are deprecated.  Each of these deprecations can still
       be used but will produce a warning when the deprecation is first used.  You can use the old interfaces without warnings by passing "new()"
       the flag "use_deprecated".  Example:

	$parser = XML::XSLT->new($xsl, "FILE",
				 use_deprecated => 1);

       The deprecated methods will disappear by the time a 1.0 release is made.

       The deprecated methods are :

       output_string
	 use toString instead

       result_string
	 use toString instead

       output
	 use toString instead

       result
	 use toString instead

       result_mime_type
	 use media_type instead

       output_mime_type
	 use media_type instead

       result_tree
	 use to_dom instead

       output_tree
	 use to_dom instead

       transform_document
	 use transform instead

       process_project
	 use process instead

       open_project
	 use "Source" argument to new() and transform instead.

       print_output
	 use serve() instead.

BUGS

       Yes.

HISTORY

       Geert Josten and Egon Willighagen developed and maintained XML::XSLT up to version 0.22.  At that point, Mark Hershberger started moving
       the project to Sourceforge and began working on it with Bron Gondwana.

LICENCE

       Copyright (c) 1999 Geert Josten & Egon Willighagen. All Rights Reserverd.  This module is free software, and may be distributed under the
       same terms and conditions as Perl.

AUTHORS

       Geert Josten <gjosten@sci.kun.nl>

       Egon Willighagen <egonw@sci.kun.nl>

       Mark A. Hershberger <mah@everybody.org>

       Bron Gondwana <perlcode@brong.net>

       Jonathan Stowe <jns@gellyfish.com>

SEE ALSO

       XML::DOM, LWP::Simple, XML::Parser

POD ERRORS

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

       Around line 880:
	   '=item' outside of any '=over'

       Around line 3581:
	   You forgot a '=back' before '=head1'

perl v5.12.1							    2004-02-20							      XML::XSLT(3)