It might be just me, but I'm finding that the lexical issues of non-XML
markup get in the way of understanding the structural transformation issues.
I would be inclined to split the problem into two: first get the structure
right with a regular XML-to-XML transformation, then do a second phase to
produce the proprietary markup syntax.
I think I would tackle the rowspans with a multi-pass approach: do a
pre-pass of the data in which any cell with a rowspan is copied into the
subsequent rows, with some kind of attribute to mark it as such. The logic
would be something like:
<xsl:template match="row" mode="expand-rowspan">
<xsl:variable name="new-cells">
<xsl:copy-of select="cell">
<xsl:for-each select="preceding-sibling::row/cell[f:row-number(..) +
@rowspan -1 gt f:row-number(current()) ]">
<xsl:copy>
<xsl:copy select="@col"/>
<xsl:attribute name="copied" select="true()"/>
where f:row-number computes the number of a row.
Michael Kay
http://www.saxonica.com/
-----Original Message-----
From: Jeff Sese [mailto:jsese(_at_)asiatype(_dot_)com]
Sent: 16 May 2006 07:58
To: Xsl-List
Subject: [xsl] Transforming Tables - repost
Good day!
I'm transforming a table xml into a InDesign tagged text
table using XSLT 2.0 on Saxon and i'm having a problem when
it comes to spanning. In InDesign tagged text a cell is
constructed this way:
<clStart:x,y>data<clEnd:>, x is the number of rows and y the
number columns occupied by the cell. However, if the table
has 5 columns then each row must have 5 cell entries as well
regardless if there exist a cell the spans the rest of the
column or a previous cell that spans the row position.
So if you have a table xml like this:
<table row="4" col="5">
<row>
<cell col="1">Data</cell>
<cell col="2" colspan="3">Data</cell>
<cell col="5">Data</cell>
</row>
<row>
<cell col="1" rowspan="3">Data</cell>
<cell col="2">Data</cell>
<cell col="3">Data</cell>
<cell col="4">Data</cell>
<cell col="5">Data</cell>
</row>
<row>
<cell col="2" rowspan="2">Data</cell>
<cell col="3">Data</cell>
<cell col="4">Data</cell>
<cell col="5">Data</cell>
</row>
<row>
<cell col="3">Data</cell>
<cell col="4">Data</cell>
<cell col="5">Data</cell>
</row>
</table>
I should have a InDesign tagged text like this:
<tStart:4,12>
<rStart:>
<cStart:1,1>Data<cEnd:>
<cStart:1,3>Data<cEnd:>
<cStart:1,1><cEnd:>
<cStart:1,1><cEnd:>
<cStart:1,1>Data<cEnd:>
<rEnd:>
<rStart:>
<cStart:3,1>Data<cEnd:>
<cStart:1,1>Data<cEnd:>
<cStart:1,1>Data<cEnd:>
<cStart:1,1>Data<cEnd:>
<cStart:1,1>Data<cEnd:>
<rEnd:>
<rStart:>
<cStart:1,1><cEnd:>
<cStart:2,1>Data<cEnd:>
<cStart:1,1>Data<cEnd:>
<cStart:1,1>Data<cEnd:>
<cStart:1,1>Data<cEnd:>
</row>
<rEnd:>
<cStart:1,1><cEnd:>
<cStart:1,1><cEnd:>
<cStart:1,1>Data<cEnd:>
<cStart:1,1>Data<cEnd:>
<cStart:1,1>Data<cEnd:>
<rEnd:>
<tEnd:>
I can get my xslt to handle column spanning, but i'm having
trouble with rowspanning. Here is my template for the cell element:
<xsl:template match="cell">
<xsl:variable name="col" select="if (exists(@colspan) then
@colspan else 1)"/> <xsl:variable name="row" select="if
(exists(@rowspan) then @rowspan else 1)"/> <xsl:value-of
select="concat('<cStart:',$row,',',$col,'>')"/>
<xsl:apply-templates/>
<xsl:value-of select="'<cEnd:'"/>
<xsl:if test="exists(@colspan)">
<xsl:value-of select="for $x in (1 to @colspan-1) return
'<cStart:1,1><cEnd:>'"/> </xsl:if> </xsl:template>
The template above generates empty cell markers based on the
value of $col along the same row, because it is for the
colspan. My problem is generating the empty cell markers for
the rowspan. For example:
<row>
<cell col="1" rowspan="3">Data</cell>
<cell col="2">Data</cell>
<cell col="3">Data</cell>
<cell col="4">Data</cell>
<cell col="5">Data</cell>
</row>
<row>
<cell col="2" rowspan="2">Data</cell>
<cell col="3">Data</cell>
<cell col="4">Data</cell>
<cell col="5">Data</cell>
</row>
<row>
<cell col="3">Data</cell>
<cell col="4">Data</cell>
<cell col="5">Data</cell>
</row>
If i'm processing the 1st cell in the 2nd row, i must first
insert an empty cell marker before it because the cell above
it spans to 3 rows.
Same goes for the 1st cell in the 3rd row only i must still
add another empty marker before it because of the rowspan on
the 1st cell in row 2.
I having trouble referencing the preceding cellm element that
span the particular row so that i can generate the
corresponding empty cell markers. I tried using
preceding::cell[1] but with i can't reference the
other rowspan.
Can someone help me with generating the empty cells for row spanning?
Thanks,
Jeff
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