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RE: [Serial] additional last call comment about xml:lang

From: Martin Duerst <duerst@w3.org>
Date: Tue, 20 Jul 2004 16:03:02 +0900
Message-Id: <4.2.0.58.J.20040720155945.05710940@localhost>
To: "Michael Kay" <mhk@mhk.me.uk>, <public-qt-comments@w3.org>
Cc: <w3c-i18n-ig@w3.org>, "'Liam Quin'" <liam@w3.org>

Hello Michael,

I'm sorry for the delay of this message.

I would like to thank you for your help. The I18N WG is satisfied
with the solution to the problem of carrying xml:lang information
from a source document to an output document using XSLT. However,
we think that it will be difficult for the reader to understand
this, and we therefore request that the code below, or something
similar, be added to the specification as an example.

With kind regards,     Martin.

At 11:56 04/05/27 +0100, Michael Kay wrote:

>Yes, this code looks correct.
>
>Michael Kay
>
> > -----Original Message-----
> > From: public-qt-comments-request@w3.org
> > [mailto:public-qt-comments-request@w3.org] On Behalf Of Martin Duerst
> > Sent: 27 May 2004 07:26
> > To: Michael Kay; public-qt-comments@w3.org
> > Cc: w3c-i18n-ig@w3.org; 'Liam Quin'
> > Subject: RE: [Serial] additional last call comment about xml:lang
> >
> >
> > At 08:47 04/05/26 +0100, Michael Kay wrote:
> >
> > > > Hello Michael,
> > > >
> > > > Are you saying that this can indeed be done with a single
> > invocation
> > > > of an XSLT implementation, with a single stylesheet? Your use of
> > > > "pre-processing phase" and so on in your previous mail wasn't
> > > > totally clear on this, at least not for me.
> > >
> > >Yes, it can all be done within a single transformation in a single
> > >stylesheet.
> >
> > This sounds great!
> >
> > > > If this is true, it would be very nice, and I would
> > assume that our
> > > > WG would then be very happy with the result. For our
> > reference, can
> > > > you please either point to the section in the spec where this
> > > > multi-pass thing is described, or can you resend the code in
> > > > your earlier mail with some framework code added that shows how
> > > > to define the various passes?
> > >
> > >There's a simple example showing how temporary trees can be
> > used to support
> > >multi-phase transformations in section 9.4 of the spec:
> > >
> > >http://www.w3.org/TR/xslt20/#temporary-trees
> > >
> > >I'm afraid I'm too busy today to do a worked example for you.
> >
> > Okay, I took this example, and the code fragments that you sent
> > earlier, and put something together below. I'd appreciate if you
> > could check it. I'm not sure I got everything right, in particular
> > all the modes.
> >
> > How to create a stlyesheet that cleanly copies xml:lang:
> > [assuming for simplicity that all xml:lang information
> > is comming from the source, not from the stylesheet, and
> > that only whole elements are transferred, not independent
> > textual pieces]
> > [I'm using a tree-pass solution; this could be done in
> > many cases as a two-pass solution]
> >
> > - Start with your stylesheet.
> > - Make sure that on all elements, xml:lang is copied.
> > - Assumes that the main mode for the original stylesheet
> >    is the default mode.
> >
> >
> > <xsl:stylesheet
> >    version="2.0"
> >    xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
> >
> > <xsl:template match="*" mode="expandXmlLang">
> >    <xsl:copy>
> >      <xsl:copy-of select="@* |
> > ancestor-or-self::*/@xml:lang[last()]"/>
> >      <xsl:apply-templates mode="expandXmlLang"/>
> >    </xsl:copy>
> > </xsl:template>
> >
> > <xsl:template match="*" mode="cleanXmlLang">
> >    <xsl:copy>
> >      <xsl:copy-of select="@* except @xml:lang[. =
> > ancestor::*/@xml:lang[last()]]"/>
> >      <xsl:apply-templates mode="cleanXmlLang"/>
> >    </xsl:copy>
> > </xsl:template>
> >
> > <!-- rest of your stylesheet here or somewhere -->
> >
> > <xsl:variable name="xmlLangExpanded">
> >    <xsl:apply-templates select="/" mode="expandXmlLang"/>
> > </xsl:variable>
> >
> > <xsl:variable name="processedMain">
> >    <xsl:apply-templates select="$xmlLangExpanded" mode="#default"/>
> > </xsl:variable>
> >
> > <xsl:template match="/">
> >    <xsl:apply-templates select"$processedMain" mode="cleanXmlLang"/>
> > <xsl:template>
> > </xsl:stylesheet>
> >
> >
> > Regards,     Martin.
> >
Received on Tuesday, 20 July 2004 09:06:35 GMT

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