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annotate rect.xsl @ 16:2bbd067529b6

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improve efficiency, detect blank rows, don't type empty cells
author Henry S. Thompson <ht@markup.co.uk>
date Mon, 03 Apr 2017 19:22:03 +0100
parents f78e8c55c06b
children 9b1b169dc8db
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1 <?xml version='1.0'?>
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2 <!DOCTYPE doc SYSTEM "../../../lib/xml/xsl.dtd" >
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3 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="3.0" xmlns:s="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:e="http://markup.co.uk/excel" exclude-result-prefixes="xs s xpf" xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:xpf="http://www.w3.org/2005/xpath-functions">
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4 <xsl:strip-space elements="s:sheetData"/>
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6 <xsl:function name="e:a2n" as="xs:integer">
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7 <!-- Convert an alphabetic excel column 'index' into a number,
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8 a sort of base 26 + 1, since 'A' is 1 and 'AA' is 27 -->
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9 <xsl:param name="aa" as="xs:string"/>
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10 <xsl:value-of select="let $l := string-length($aa),
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11 $lv := string-to-codepoints(substring($aa,$l))-$codeBase
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12 return if ($l=1) then $lv
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13 else $lv+(26*e:a2n(substring($aa,1,$l - 1)))"/>
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14 </xsl:function>
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16 <xsl:function name="e:n2aa" as="xs:integer*">
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17 <!-- Does the real work for e:n2a -->
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18 <xsl:param name="n" as="xs:integer"/>
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19 <xsl:sequence select="let $least := $codeBase+(($n - 1) mod 26)+1
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20 return if ($n &lt; 27) then $least
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21 else (e:n2aa($n idiv 26),$least)"/>
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22 </xsl:function>
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24 <xsl:function name="e:n2a" as="xs:string">
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25 <!-- Invert the a2n computation -->
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26 <xsl:param name="n" as="xs:integer"/>
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27 <xsl:value-of select="codepoints-to-string(e:n2aa($n))"/>
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28 </xsl:function>
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30 <xsl:variable name="dim" select="//s:dimension/@ref"/>
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31 <xsl:variable name="codeBase" select="string-to-codepoints('A')-1"/>
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33 <xsl:template match="/">
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34 <xsl:apply-templates select="//s:sheetData"/>
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35 </xsl:template>
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37 <xsl:template match="s:sheetData">
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38 <xsl:if test="s:row">
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39 <xsl:variable name="dims" select="analyze-string($dim,'([A-Z]+)([0-9]+):([A-Z]+)([0-9]+)')"/>
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40 <xsl:variable name="height" select="1+xs:integer($dims//xpf:group[@nr='4'])-xs:integer($dims//xpf:group[@nr='2'])"/>
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41 <xsl:variable name="width" select="1+e:a2n($dims//xpf:group[@nr='3'])-e:a2n($dims//xpf:group[@nr='1'])"/>
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42 <!-- Brute force! -->
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43 <xsl:variable name="sheet" select="."/>
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44 <e:a>
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45 <xsl:text>&#10;</xsl:text>
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46 <xsl:for-each select="(1 to $height)"><xsl:variable name="row" select="."/>
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47 <e:r r="{$row}">
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48 <xsl:variable select="$sheet/s:row[@r=$row]/s:c" name="cells"/>
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49 <xsl:if test="$cells/*">
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50 <xsl:for-each select="(1 to $width)">
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51 <xsl:variable name="col" select="."/>
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52 <xsl:variable name="r" select="concat(e:n2a($col),string($row))"/>
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53 <xsl:variable name="c" select="$cells[@r=$r]"/>
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54 <e:c c="{$col}">
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55 <xsl:if test="$c/s:f"><xsl:attribute name="f">1</xsl:attribute></xsl:if>
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56 <xsl:if test="$c/*"><xsl:value-of select="substring($c/@e:type,1,1)"/></xsl:if>
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57 </e:c>
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58 </xsl:for-each></xsl:if>
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59 </e:r>
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60 <xsl:text>&#10;</xsl:text></xsl:for-each>
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61 </e:a>
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62 </xsl:if>
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63 </xsl:template>
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64 </xsl:stylesheet>