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<?xml version="1.0" encoding="ISO-8859-1"?> <!-- -*- sgml -*- -->
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:ext="http://exslt.org/common"
xmlns:str-split2lines-func="f:str-split2lines-func"
exclude-result-prefixes="xsl ext str-split2lines-func">
<!-- how much do I love haskell ... -->
<xsl:template name="str-foldl">
<xsl:param name="pFunc" select="/.."/>
<xsl:param name="pA0"/>
<xsl:param name="pStr"/>
<xsl:choose>
<xsl:when test="not(string($pStr))">
<xsl:copy-of select="$pA0"/>
</xsl:when>
<xsl:otherwise>
<xsl:variable name="vFunResult">
<xsl:apply-templates select="$pFunc[1]">
<xsl:with-param name="arg0" select="$pFunc[position() > 1]"/>
<xsl:with-param name="arg1" select="$pA0"/>
<xsl:with-param name="arg2" select="substring($pStr,1,1)"/>
</xsl:apply-templates>
</xsl:variable>
<xsl:call-template name="str-foldl">
<xsl:with-param name="pFunc" select="$pFunc"/>
<xsl:with-param name="pStr" select="substring($pStr,2)"/>
<xsl:with-param name="pA0" select="ext:node-set($vFunResult)"/>
</xsl:call-template>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<str-split2lines-func:str-split2lines-func/>
<xsl:template name="str-split-to-lines">
<xsl:param name="pStr"/>
<xsl:param name="pLineLength" select="60"/>
<xsl:param name="pDelimiters" select="' 
'"/>
<xsl:variable name="vsplit2linesFun"
select="document('')/*/str-split2lines-func:*[1]"/>
<xsl:variable name="vrtfParams">
<delimiters><xsl:value-of select="$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="$pStr"/>
<xsl:with-param name="pA0" select="ext:node-set($vrtfParams)"/>
</xsl:call-template>
</xsl:variable>
<xsl:for-each select="ext:node-set($vResult)/line">
<xsl:for-each select="word">
<xsl:value-of select="concat(., ' ')"/>
</xsl:for-each>
<xsl:value-of select="'
'"/>
</xsl:for-each>
</xsl:template>
<xsl:template match="str-split2lines-func:*">
<xsl:param name="arg1" select="/.."/>
<xsl:param name="arg2"/>
<xsl:copy-of select="$arg1/*[position() < 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, $arg2)"/></word>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<!-- This template recognises every new word and accumulates the result, -->
<!-- which is a list of 'line' elements, each having a list of 'word' -->
<!-- children. After the last 'line' element there's a single 'word', in -->
<!-- which the 'current word; is being accumulated. Whenever the current -->
<!-- character is one of the specified delimiters, this signals the -->
<!-- formation of a new word. This word is either added to the last line -->
<!-- (if the total line length will not exceed the specified line-length), -->
<!-- or a new line is started and this word becomes the 1st in the new line -->
<xsl:template name="fillLine">
<xsl:param name="pLine" select="/.."/>
<xsl:param name="pWord" select="/.."/>
<xsl:param name="pLineLength" />
<xsl:variable name="vnWordsInLine" select="count($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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