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.
-
- xsl_output_method
- Get or set the <xsl:output method= attribute. Valid arguments are 'html', 'text' and 'xml'
- 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-ofNot 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 <[email protected]>Egon Willighagen <[email protected]>
Mark A. Hershberger <[email protected]>
Bron Gondwana <[email protected]>
Jonathan Stowe <[email protected]>