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Pretty print XML output #1983

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Pretty print XML output #1983

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36 changes: 35 additions & 1 deletion src/js/models/DataONEObject.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1183,6 +1183,12 @@ define(['jquery', 'underscore', 'backbone', 'uuid', 'he', 'collections/AccessPol
* Will format an XML string or XML nodes by camel-casing the node names, as necessary
*/
formatXML: function(xml){
var formattedXML = "";
var xsltProcessor;
var xslt;
var xsltDoc;
var xmlDoc;
var transformedDoc;
var nodeNameMap = this.nodeNameMap(),
xmlString = "";

Expand Down Expand Up @@ -1244,7 +1250,35 @@ define(['jquery', 'underscore', 'backbone', 'uuid', 'he', 'collections/AccessPol
var regEx = new RegExp("\&[0-9a-zA-Z]+\;", "g");
xmlString = xmlString.replace(regEx, function(match){ return he.encode(he.decode(match)); });

return xmlString;
// Transform the xmlString into an indented XML string
// and preserve whitespace in text nodes
xslt = [
'<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform">',
' <xsl:output indent="yes"/>',
' <xsl:preserve-space elements="*"/>',
' <xsl:template match="node()|@*">',
' <xsl:copy><xsl:apply-templates select="node()|@*"/></xsl:copy>',
' </xsl:template>',
'</xsl:stylesheet>'
].join("\n");

try {
xsltDoc = new DOMParser().parseFromString(xslt, "application/xml");
xmlDoc = new DOMParser().parseFromString(xmlString, "application/xml");

if (window.ActiveXObject || "ActiveXObject" in window) {
xsltProcessor = new ActiveXObject("Msxml2.XSLTemplate");
} else {
xsltProcessor = new XSLTProcessor();
}
xsltProcessor.importStylesheet(xsltDoc);
transformedDoc = xsltProcessor.transformToDocument(xmlDoc);
formattedXML = new XMLSerializer().serializeToString(transformedDoc);
return formattedXML;
} catch (transformError) {
console.log("Could not pretty-print XML:" + transformError);
return xmlString;
}
},

/**
Expand Down