On Sat, Aug 15, 2020 at 04:03:26PM -0000, Wolfhart Totschnig
wolfhart(_dot_)totschnig(_at_)mail(_dot_)udp(_dot_)cl scripsit:
And thank you, Michael, for the detailed explanation of possible approaches
to the problem. Graydon's solution will work very well in my case, I think,
since I can test for most error-producing conditions before applying the
code and the probability of further errors seems sufficiently low in my
context and for my purposes. But I am still curious: What would an approach
of type (a) look like in my case? It seems to me that implementing this
approach would again face the original problem: "turning the punctuation
into markup" sounds like a description of the original problem.
I tend to make a distinction between conversion code -- I'm going to do
this once, for this exact data set -- and production code -- the code
has to go deal with the world indefinitely. Approach a) is definitely
more like production code than approach b).
Dr. Kay is completely correct that the approach b) solution I provided
has a lot of ways to fail. In a one-time data conversion context, when
I've already used XQuery to find out exactly what's in there, I wouldn't
worry about that. I'm trying to minimize the effort required to write
the one-use conversion code.
In a production context -- the code must go fend for itself -- approach
a) wins.
For your example, approach a) would look like:
<xsl:stylesheet exclude-result-prefixes="xs math xd" version="3.0"
xmlns:math="http://www.w3.org/2005/xpath-functions/math";
xmlns:xd="http://www.oxygenxml.com/ns/doc/xsl";
xmlns:xs="http://www.w3.org/2001/XMLSchema";
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<xd:doc scope="stylesheet">
<xd:desc>
<xd:p><xd:b>Created on:</xd:b> Aug 15, 2020</xd:p>
<xd:p><xd:b>Author:</xd:b> graydon</xd:p>
<xd:p />
</xd:desc>
</xd:doc>
<xsl:variable as="element(title)+" name="test">
<title>THE TITLE OF THE BOOK WITH SOME <i>ITALICS</i> AND SOME MORE WORDS:
THE SUBTITLE OF THE BOOK WITH SOME
<i>ITALICS</i></title>
</xsl:variable>
<xd:doc>
<xd:desc>test</xd:desc>
</xd:doc>
<xsl:template name="xsl:initial-template">
<bucket>
<xsl:for-each select="$test">
<xsl:variable as="element()" name="temp1">
<xsl:apply-templates mode="marker" select="." />
</xsl:variable>
<xsl:variable as="element()+" name="temp2">
<xsl:apply-templates mode="split" select="$temp1" />
</xsl:variable>
<xsl:sequence select="$temp2" />
</xsl:for-each>
</bucket>
</xsl:template>
<xsl:mode name="marker" on-no-match="shallow-copy" />
<xsl:mode name="split" on-no-match="shallow-copy" />
<xsl:mode name="recase" on-no-match="shallow-copy" />
<xd:doc>
<xd:desc>place the separator marker element; this can get much more
involved if you aren't sure you certainly have a single colon in a text
node</xd:desc>
</xd:doc>
<xsl:template match="text()[contains(., ':')]" mode="marker">
<xsl:value-of select="substring-before(., ':')" />
<title-separator />
<xsl:value-of select="substring-after(., ':') => replace('^\p{Zs}+', '')" />
</xsl:template>
<xd:doc>
<xd:desc>divide title into title and subtitle</xd:desc>
</xd:doc>
<xsl:template match="title" mode="split">
<title>
<xsl:apply-templates mode="recase"
select="descendant::node()[following::title-separator]" />
</title>
<subtitle>
<xsl:apply-templates mode="recase"
select="descendant::node()[preceding::title-separator]" />
</subtitle>
</xsl:template>
<xd:doc>
<xd:desc>lower case all the text nodes in title</xd:desc>
</xd:doc>
<xsl:template match="text()" mode="recase">
<xsl:sequence select="lower-case(.)" />
</xsl:template>
</xsl:stylesheet>
You could add more <title/> elements to $test and test all of them as
you find problematic title elements in the content set.
--
Graydon Saunders | graydonish(_at_)gmail(_dot_)com
Þæs oferéode, ðisses swá mæg.
-- Deor ("That passed, so may this.")
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