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RE: [xsl] Text - Line Wrapping


Subject: RE: [xsl] Text - Line Wrapping
From: "Pawson, David" <David.Pawson@xxxxxxxxxxx>
Date: Fri, 28 Jan 2005 08:49:41 -0000

    -----Original Message-----
    From: Dimitre Novatchev

    Yes, use the   str-split-to-lines   template from FXSL.

Below, complete solution,
with fxsl downloaded from
http://sourceforge.net/project/showfiles.php?group_id=53841

extract str-foldl.xsl into same directory as stylesheet below.

Using Dimitre's example,
<text>
Dec. 13 ? As always for a presidential inaugural, security and surveillance
were
extremely tight in Washington, DC, last January. But as George W. Bush
prepared to
take the oath of office, security planners installed an extra layer of
protection: a
prototype software system to detect a biological attack. The U.S. Department
of
Defense, together with regional health and emergency-planning agencies,
distributed
a special patient-query sheet to military clinics, civilian hospitals and even
aid
stations along the parade route and at the inaugural balls. Software quickly
analyzed complaints of seven key symptoms ? from rashes to sore throats ? for
patterns that might indicate the early stages of a bio-attack. There was a
brief
scare: the system noticed a surge in flulike symptoms at military clinics.
Thankfully, tests confirmed it was just that ? the flu.</text>

The stylesheet outputs:

Dec. 13 ? As always for a presidential inaugural, security and
surveillance were extremely tight in Washington, DC, last
January. But as George W. Bush prepared to take the oath of
office, security planners installed an extra layer of
protection: a prototype software system to detect a biological
attack. The U.S. Department of Defense, together with regional
health and emergency-planning agencies, distributed a special
patient-query sheet to military clinics, civilian hospitals and
even aid stations along the parade route and at the inaugural
balls. Software quickly analyzed complaints of seven key
symptoms ? from rashes to sore throats ? for patterns that might
indicate the early stages of a bio-attack. There was a brief
scare: the system noticed a surge in flulike symptoms at
military clinics. Thankfully, tests confirmed it was just that ?
the

Nice on Dimitre.

regards DaveP.


<?xml version="1.0" ?>
<xsl:stylesheet version="1.1"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:str-split2lines-func="f:str-split2lines-func"
exclude-result-prefixes="xsl  str-split2lines-func"
>

   <xsl:import href="str-foldl.xsl"/>
<d:doc xmlns:d="rnib.org.uk/tbs#">
 <revhistory>
   <purpose><para>This stylesheet works with file XXXX.xml to produce
YYYY.html</para></purpose>
   <revision>
    <revnumber>1.0</revnumber>
    <date> 2004</date>
    <authorinitials>DaveP</authorinitials>
    <revdescription>
     <para></para>
    </revdescription>
    <revremark></revremark>
   </revision>
  </revhistory>
  </d:doc>



   <str-split2lines-func:str-split2lines-func/>

   <xsl:output indent="yes" omit-xml-declaration="yes"/>

  <xsl:template match="/">
      <xsl:call-template name="str-split-to-lines">
        <xsl:with-param name="pStr" select="/*"/>
        <xsl:with-param name="pLineLength" select="64"/>
        <xsl:with-param name="pDelimiters" select="' &#9;&#10;&#13;'"/>
      </xsl:call-template>
    </xsl:template>



    <xsl:template name="str-split-to-lines">
      <xsl:param name="pStr"/>
      <xsl:param name="pLineLength" select="60"/>
      <xsl:param name="pDelimiters" select="' &#9;&#10;&#13;'"/>

      <xsl:variable name="vsplit2linesFun"
                    select="document('')/*/str-split2lines-func:*[1]"/>

      <xsl:variable name="vrtfParams">
       <delimiters><xsl:value-of select="$pDelimiters"/></delimiters>
       <lineLength><xsl:copy-of select="$pLineLength"/></lineLength>
      </xsl:variable>

      <xsl:variable name="vResult">
	      <xsl:call-template name="str-foldl">
	        <xsl:with-param name="pFunc" select="$vsplit2linesFun"/>
	        <xsl:with-param name="pStr" select="$pStr"/>
	        <xsl:with-param name="pA0" select="$vrtfParams"/>
	      </xsl:call-template>
      </xsl:variable>

      <xsl:for-each select="$vResult/line">
        <xsl:for-each select="word">
          <xsl:value-of select="concat(., ' ')"/>
        </xsl:for-each>
        <xsl:value-of select="'&#10;'"/>
      </xsl:for-each>
    </xsl:template>

    <xsl:template match="str-split2lines-func:*">
      <xsl:param name="arg1" select="/.."/>
      <xsl:param name="arg2"/>

      <xsl:copy-of select="$arg1/*[position() &lt; 3]"/>
      <xsl:copy-of select="$arg1/line[position() != last()]"/>

	  <xsl:choose>
	    <xsl:when test="contains($arg1/*[1], $arg2)">
	      <xsl:if test="string($arg1/word)">
	         <xsl:call-template name="fillLine">
	           <xsl:with-param name="pLine" select="$arg1/line[last()]"/>
	           <xsl:with-param name="pWord" select="$arg1/word"/>
	           <xsl:with-param name="pLineLength" select="$arg1/*[2]"/>
	         </xsl:call-template>
	      </xsl:if>
	    </xsl:when>
	    <xsl:otherwise>
	      <xsl:copy-of select="$arg1/line[last()]"/>
	      <word><xsl:value-of select="concat($arg1/word, $arg2)"/></word>
	    </xsl:otherwise>
	  </xsl:choose>
	</xsl:template>

      <!-- Test if the new word fits into the last line -->
	<xsl:template name="fillLine">
      <xsl:param name="pLine" select="/.."/>
      <xsl:param name="pWord" select="/.."/>
      <xsl:param name="pLineLength" />

      <xsl:variable name="vnWordsInLine" select="count($pLine/word)"/>
      <xsl:variable name="vLineLength" select="string-length($pLine)
                                             + $vnWordsInLine"/>
      <xsl:choose>
        <xsl:when test="not($vLineLength + string-length($pWord) >
$pLineLength)">
          <line>
            <xsl:copy-of select="$pLine/*"/>
            <xsl:copy-of select="$pWord"/>
          </line>
        </xsl:when>
        <xsl:otherwise>
          <xsl:copy-of select="$pLine"/>
          <line>
            <xsl:copy-of select="$pWord"/>
          </line>
          <word/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:template>

</xsl:stylesheet>



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