Here is what is in my source xml:

<g transform="translate( 40.00, 59.55)"><rect id="line 1277 rect"
title="0002 0001 scan 001 ` ~" width="12.5" height="12.5"
class="keyoutline" /> <text x=" 6" y="11" class="tch">巷</text><text
x=" 6" y="11" class="ru-up">Ȅ</text><text x=" 6" y="11"
class="ru-lo">ȅ</text>
</g>

How do I extract the 40.00 and 59.55 from the translate attribute for each
child that has an attribute [class='tch']?

Here is my attempt -- it is almost working. I get the text(), the @x and the
@y but I cannot get the sibling or parent attributes! What am I doing wrong?
I'm using saxon.

I guess this is a two part question. After I get the parent's transform
attribute, I want to extract the two numerical values from the translation.

Thanks!
Siegfried


<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="xs"
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:svg="http://www.w3.org/2000/svg"
version="2.0">

<xslutput indent="yes"/>
<xsl:template match="/">
<keys>
<xsl:apply-templates select="//svg:text[@class='tch']"/>
</keys>
</xsl:template>

<xsl:template match="//*[@class='tch']">
<xsl:element name="key">
<xsl:attribute name="x"><xsl:value-of select="@x"/></xsl:attribute>
<!-- works!-->
<xsl:attribute name="title"><xsl:value-of
select="../../svg:g[@title]"/></xsl:attribute> <!-- does not
work! -->
<xsl:attribute name="width"><xsl:value-of
select="../svg:text[@svg:width]"/></xsl:attribute> <!-- does not
work! -->
<xsl:attribute name="pos"><xsl:value-of
select="position()"/></xsl:attribute> <!-- this seems to give the
grandchild position and not the child position, I want the child
position -->

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

Siegfried Heintze wrote:
> Here is what is in my source xml:
>
> <g transform="translate( 40.00, 59.55)"><rect id="line 1277 rect"
> title="0002 0001 scan 001 ` ~" width="12.5" height="12.5"
> class="keyoutline" /> <text x=" 6" y="11" class="tch">巷</text><text
> x=" 6" y="11" class="ru-up">Ȅ</text><text x=" 6" y="11"
> class="ru-lo">ȅ</text>
> </g>
>
> How do I extract the 40.00 and 59.55 from the translate attribute for each
> child that has an attribute [class='tch']?
>
> Here is my attempt -- it is almost working. I get the text(), the @x and the
> @y but I cannot get the sibling or parent attributes! What am I doing wrong?
> I'm using saxon.


> <xsl:template match="//*[@class='tch']">
> <xsl:element name="key">
> <xsl:attribute name="x"><xsl:value-of select="@x"/></xsl:attribute>
> <!-- works!-->
> <xsl:attribute name="title"><xsl:value-of
> select="../../svg:g[@title]"/></xsl:attribute> <!-- does not
> work! -->

It is not clear what you want to achieve above. Your select expression
.../../svg:g[@title] looks at svg:g children of the grandparent element
having a title attribute. If you want to output the title attribute
value then you need ../../svg:g[@title]/@title.
As your SVG sample above does not have any g element with a title
attribute I can't tell which expression you are looking for.

Also note that in XSLT 2.0 the xsl:attribute element allows a select
attribute so you can shorten e.g.
<xsl:attribute name="foo">
<xsl:value-of select="bar"/>
</xsl:attribute>
to e.g.
<xsl:attribute name="foo" select="bar></xsl:attribute>

> <xsl:attribute name="width"><xsl:value-of
> select="../svg:text[@svg:width]"/></xsl:attribute> <!-- does not
> work! -->

Again it is not clear what you want to achieve. The select expression
.../svg:text[@svg:width] select svg:text children of the parent which
have an svg:width attribute. As attributes in SVG are in no namespace I
think you rather want
../svg:text[@width]
or assuming you want to output an attribute value you want
../svg:text[@width]/@width

> <xsl:attribute name="pos"><xsl:value-of
> select="position()"/></xsl:attribute> <!-- this seems to give the
> grandchild position and not the child position, I want the child
> position -->

position() gives the position in the currently processed nodes. As your
xsl:apply-templates has select="//svg:text[@class='tch']" the currently
processed nodes are svg:text elements at all levels and position()
refers to the position in that sequence.
Look into xsl:number to get a different value:
http://www.w3.org/TR/xslt20/#numberi...ed-on-position


As for extracting the numbers in translate( 40.00, 59.55) you could use
xsl:analyze-string for that: http://www.w3.org/TR/xslt20/#analyze-string



--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/

>It is not clear what you want to achieve above. Your select expression
>../../svg:g[@title] looks at svg:g children of the grandparent element
>having a title attribute. If you want to output the title attribute value
>then you need ../../svg:g[@title]/@title.

.../../svg:g[@title]/@title

Does not work!
But
...//@title

Does work. Oops, I see the problem: I got my sibling mixed up with the
grand parent! Please forgive me: it was late at night!

Now this works:

.../svg:rect/@title

Great!

Now what about this transform attribute? This works:

.../@transform

It produces

<key x=" 6" y="11" title="0002 0003 scan 003 2 @"
transform="translate( 78.10, 59.05)"
width="12.5"
pos="5">牛</key>

Now how do I extract that 78.10 and 59.05 out of the translate function in
the transform attribute?

Thanks! You have been very helpful so far!

Siegfried

Siegfried Heintze wrote:

> Now how do I extract that 78.10 and 59.05 out of the translate function in
> the transform attribute?

As suggested, you can try to parse out those value with a regular
expression and xsl:analyze-string.

Here is an example that defines a function to be used:

<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="xs mf"
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns:mf="http://example.com/2008/mf"
version="2.0">

<xslutput indent="yes"/>
<xsl:template match="/">
<keys>
<xsl:apply-templates select="//svg:text[@class='tch']"/>
</keys>
</xsl:template>

<xsl:template match="*[@class='tch']">
<xsl:element name="key">
<xsl:variable name="parsed-translate"
select="mfarse-translate(parent::svg:g/@transform)"/>
<xsl:attribute name="x" select="$parsed-translate[1]"/>
<xsl:attribute name="y" select="$parsed-translate[2]"/>

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

<xsl:function name="mfarse-translate" as="xs:string*">
<xslaram name="translate" as="xs:string"/>
<xsl:variable name="dp" select="'[+\-]?\d+(\.\d+)?'"/>
<xsl:variable name="pattern" select="concat('translate\s*\(\s*(',
$dp, '),\s*(', $dp, ')\)')"/>
<xsl:message terminate="no" select="concat('pattern is &quot;',
$pattern, '&quot;')"/>
<xsl:analyze-string select="$translate"
regex="{$pattern}">
<xsl:matching-substring>
<xsl:sequence select="(regex-group(1), regex-group(3))"/>
</xsl:matching-substring>
</xsl:analyze-string>
</xsl:function>
</xsl:stylesheet>

Here is a link to the documentation again:
http://www.w3.org/TR/xslt20/#analyze-string


--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/

Martin Honnen wrote:

> <xsl:function name="mfarse-translate" as="xs:string*">
> <xslaram name="translate" as="xs:string"/>
> <xsl:variable name="dp" select="'[+\-]?\d+(\.\d+)?'"/>
> <xsl:variable name="pattern" select="concat('translate\s*\(\s*(',
> $dp, '),\s*(', $dp, ')\)')"/>
> <xsl:message terminate="no" select="concat('pattern is &quot;',
> $pattern, '&quot;')"/>

Remove that xsl:message if you use the code, it is just in there for
debugging the regular expression.


--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/