Re: Unexpected MSXML Javascript extension results

Hello all,



We have an XSL transformation that runs using some form of MSXML for the actual transformation. Given that MSXML is XSL 1.0, I am trying to code around the fact that it lacks regular expression functions by writing a JavaScript extension function to match Greek characters and wrap them in a span to avoid them being wrongly transformed to capital letters by smallcap treatment on the text around it. The JavaScript function I wrote appears to work fine if I run it locally, but when run as part of the XSL, it's not recursing properly. I don't have much of a way to debug this, so I'm hoping perhaps someone can either recognize why I'm getting inconsistent recursion, or perhaps suggest an alternative approach. Code/sample text below:



JavaScript Function:

<msxsl:script language="javascript" implements-prefix="uspc"><![CDATA[

//Recursive function to wrap greek characters in nosmallcaps span

function wrapGreek(str){

var regex = /(.*)([N1-O N-N)])(.*)/g;

var m = regex.exec(str);

var rStr = "";

if(m != null){

rStr = wrapGreek(m[1]);

} else {

rStr = str;

}

if(m != null) {

rStr += '<span class="nosmallcaps">' + m[2] + '</span>' + m[3];

}

return "" + rStr;

}

]]></msxsl:script>



Text template:

<xsl:template match="text()" priority="20">

<xsl:variable name="textout">

<xsl:value-of select="."/>

</xsl:variable>

<xsl:value-of disable-output-escaping="yes" select="uspc:wrapGreek($textout)"/>

</xsl:template>



Sample Content:

This head composed correctly:

<title cid="pttFA" id="GUID-04193AE6-05B6-44C1-AB2A-E8A900F93CE3">DESN1CRIPN1TION</title>



For this one, only the second alpha symbol was wrapped, so it did not recurse. Copying this text to a JavaScript interpreter and running the function on it in isolation does appear to recurse correctly.

<title cid="1IMidE" id="GUID-D279E612-1350-4709-B662-8FFEF76CD0C0">InfrN1ared AbsoN1rption, <i cid="2KvZ79">Spectrophotometric Identification Tests, Appendix IIIC</i></title>