Created a dedicated sf-log-to-brag target so it can take care of the commonality of the task, including the creation of the directory for XML output.
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fn="http://www.w3.org/2005/xpath-functions">
<!-- Initialise keys (sort of like hashes?) to enable us to list distinct packages/severities -->
<xsl:key name="packages" match="failure" use="@package"/>
<xsl:key name="severities" match="failures" use="@severity"/>
<!-- Main template -->
<xsl:template match="/buildStatus">
<html>
<head><title>Build Status</title></head>
<body>
<h1>Build Status</h1>
<xsl:variable name="criticalCount" select="count(phase/step/failures[@level='critical']/failure)"/>
<xsl:variable name="majorCount" select="count(phase/step/failures[@level='major']/failure)"/>
<xsl:variable name="minorCount" select="count(phase/step/failures[@level='minor']/failure)"/>
<xsl:variable name="unknownCount" select="count(phase/step/failures[@level!='critical' and @level!='major' and @level!='minor']/failure)"/>
<h2>
Overall BRAGG staus:
<xsl:choose>
<xsl:when test="$criticalCount != 0">BLACK</xsl:when>
<xsl:when test="$majorCount != 0">RED</xsl:when>
<xsl:when test="$minorCount != 0">AMBER</xsl:when>
<xsl:when test="$unknownCount != 0">GREEN</xsl:when>
<xsl:otherwise>GOLD!</xsl:otherwise>
</xsl:choose>
</h2>
<h2>Breakdown by severity</h2>
<table border="1">
<tr><td>Critical</td><td><xsl:value-of select="$criticalCount"/></td></tr>
<tr><td>Major</td><td><xsl:value-of select="$majorCount"/></td></tr>
<tr><td>Minor</td><td><xsl:value-of select="$minorCount"/></td></tr>
<tr><td>Unknown</td><td><xsl:value-of select="$unknownCount"/></td></tr>
<tr><th>Grand total</th><th><xsl:value-of select="count(phase/step/failures/failure)"/></th></tr>
</table>
<h2>Breakdown by phase/step</h2>
<table border="1">
<xsl:for-each select="phase">
<tr>
<th colspan='2'>Phase: <xsl:value-of select="@name"/></th>
</tr>
<xsl:for-each select="step">
<tr>
<td colspan='2'>Step: <xsl:value-of select="@name"/></td>
</tr>
<xsl:for-each select="failures">
<tr>
<td>Failures: <xsl:value-of select="@level"/></td>
<td>Number: <xsl:value-of select="count(failure)"/></td>
</tr>
</xsl:for-each>
</xsl:for-each>
</xsl:for-each>
</table>
<!-- If any failures are tied to a specific package... -->
<xsl:if test="phase/step/failures/failure[@package]">
<h2>Breakdown by package</h2>
<table border="1">
<tr><th>Package</th><th>Total failures</th></tr>
<!-- Use the Muenchian Method to get a set of distinct packages -->
<xsl:for-each select="phase/step/failures/failure[generate-id(.) = generate-id(key('packages', @package))]">
<xsl:sort select="@package"/>
<tr><td><xsl:value-of select="@package"/></td><td><xsl:value-of select="count(key('packages', @package))"/></td></tr>
</xsl:for-each>
</table>
</xsl:if>
</body>
</html>
</xsl:template>
</xsl:stylesheet>