Hi There, hope someone can helps me with the following ; I have a pile of XML content that has been converted from Framemaker files, and I have some inconsistencies with the content. Following is what I have :

<Content>
<StartUnderline/>[<VAR ID="1234" REFID="On"/><StartUnderline/>]<EndUnderline/>: Some blabla 1.
<StartUnderline/>[<VAR ID="5678" REFID="Off"/><StartUnderline/>]<EndUnderline/>: Some blabla2.
</Content>

What I want to get is the following :

<Content>
<u>[<VAR ID="1234" REFID="On"/>]</u>: Some blabla 1.
<u>[<VAR ID="5678" REFID="Off"/>]</u>: Some blabla2.
</Content>

I managed to get things working more or less if every <StartUnderline/> is followed by an <EndUnderline/> later in the tree by using following-sibling:: etc, but the problem is that in some cases there is an obsolete additional <StartUnderline/> in the node (as shown in example).

So, what I tried to do is write something like 'encapsulate all tags in a <u> tag from the first <StartUnderline/> tag onward, and ignore all following <StartUnderline/> tags until you get an <EndUnderline/> tag.Then close the <u> tag.

Or to simplify something like this :

<some tags...>
<some tags...>
<StartUnderline/> <-- Replace with <u>
<some tags...>
<some tags...>
<StartUnderline/> <-- IGNORE / KICK OUT !!!
<some tags...>
<some tags...>
<EndUnderline/><! -- Replace with </u>
<some tags...>
<some tags...>

... but it's a bit above my head, so any advice would be highly appreciated

If you can trust the end-underline elements, try something like:

__________________
Michael Kay
http://www.saxonica.com/
Author, XSLT 2.0 and XPath 2.0 Programmer\'s Reference

Thanks already for this tip, but I'm not able to get it running. I've been checking the web for some examples on using grouping (I'm fairly new to xslt 2.0 to be honnest), but all examples expect nice, clean structured input. not real live data...

What I tried is the following : make a simple xml file containing some examples of the various ways the underline tags are provided.

xml sample :

<TestFile>
<!-- Para tag containing no underline tags -->
<Para>
<Content>[text_not_underlined]</Content>
</Para>
<!-- correct encapsulation from source -->
<Para>
<Content>
<Underline/>[text_to_be_underlined]<EndUnderline/>
<p>Some test data</p>
</Content>
</Para>
<!-- extra underline tag that should be ignored -->
<Para>
<Content>
<Underline/>[text_to_be_underlined]<Underline/>
<EndUnderline/>
<p>Some other test data</p>
</Content>
</Para>
<!-- some extra end underline tags that should be ignored -->
<Para>
<Content>
<EndUnderline/>[no_longer_underline]<EndUnderline/>
<p>: More data</p>
</Content>
</Para>
</TestFile>

When using your group coding in a template results are not exactly what I expected, so I'm probably overlooking something. I.ve tried various things, but neither one of these were successful. Could you therefore look at below, and point me to what I do wrong ? I manage indeed to encapsulate my underlined content in a u tag, but the rest of the content is gone

-----------------------
Stylesheet
-----------------------

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<xsl:template match="/">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="Content">
<xsl:copy>
<xsl:copy-of select="@*"/>
<xsl:for-each-group select="node()" group-ending-with="EndUnderline">
<xsl:variable name="start" select="current-group()[self::Underline][1]"/>
<xsl:copy-of select="current-group()[$start >> .]"/>
<u>
<xsl:copy-of select="current-group()[. >> $start][not(self::Underline)][not(self::EndUnderline)]"/>
</u>
</xsl:for-each-group>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>


-----------------------
Current result
-----------------------

<TestFile>
<!-- Para tag containing no underline tags -->
<Para>
<Content>
<u/>
</Content>
</Para>
<!-- correct encapsulation from source -->
<Para>
<Content>
<u>[text_to_be_underlined]</u>
<u/>
</Content>
</Para>
<!-- extra underline tag that should be ignored -->
<Para>
<Content>
<u>[text_to_be_underlined]</u>
<u/>
</Content>
</Para>
<!-- some extra end underline tags that should be ignored -->
<Para>
<Content>
<u/>
<u/>
</Content>
</Para>
</TestFile>

-----------------------
Hoped for result
-----------------------

<TestFile>
<!-- Para tag containing no underline tags -->
<Para>
<Content>[text_not_underlined]</Content>
</Para>
<!-- correct encapsulation from source -->
<Para>
<Content>
<u>[text_to_be_underlined]</u>
<p>Some test data</p>
</Content>
</Para>
<!-- extra underline tag that should be ignored -->
<Para>
<Content>
<u>[text_to_be_underlined]</u>
<p>Some other test data</p>
</Content>
</Para>
<!-- some extra end underline tags that should be ignored -->
<Para>
<Content>
[no_longer_underline]
<p>: More data</p>
</Content>
</Para>
</TestFile>


Since the actual XML file is pretty large and containing a lot more data and variety of tags, I assume some way of working with the identity template needs to be done, but I can't figure out how to make it work together with the group template. If it might make things easier ; all content to be underlined resides within a <Content> tag, but lot more additional tags as shown in the example can be underneeth the <Content> tag.


Thanks again for any support on this !

The reason content disappears when there is no underline tag is that this

produces no output when $start is empty. So try changing it to

__________________
Michael Kay
http://www.saxonica.com/
Author, XSLT 2.0 and XPath 2.0 Programmer\'s Reference

Thanks mhkay, I had to alter it a bit since I still ended up with some empty <u/> tags but you placed me in the right track. I used the start variable itself to make the choice, if available > copy the group, if not > treat data as 'normal'.

This is what I finally came up with, and it works like a charm so I hope it can be usefull for others too :