# !!! all a quick hack
    if ($path =~ /.bz2$/) {
        return `cat $path | bzip2 -d`;
    } else {
        return `cat $path`;
    }

    # !!! quick hack
    my $pipeline = ($path =~ /.bz2$/ ? "cat $path | bzip2 -d" : "cat $path")
        . " | nix-log2xml | xsltproc xsl/mark-errors.xsl - | xsltproc xsl/log2html.xsl - | tail -n +2";
    return `$pipeline`;

    <link rel="stylesheet" href="/hydra.css" type="text/css" />

    <link rel="stylesheet" href="/static/css/hydra.css" type="text/css" />
    <link rel="stylesheet" href="/static/css/logfile.css" type="text/css" />

    <script type="text/javascript" src="/static/js/treebits.js"></script>

<pre class="buildlog">

<div class="buildlog">

</pre>

</div>

div.buildlog {
    border: 1px solid black;
    padding: 0.3em;
}

ul.nesting, ul.toplevel {
    padding: 0;
    margin: 0;
}
ul.toplevel {
    list-style-type: none;
}
.line, .head {
    padding-top: 0em;
}
ul.nesting li.line, ul.nesting li.lastline {
    position: relative;
    list-style-type: none;
}
ul.nesting li.line {
    padding-left: 2.0em;
}
ul.nesting li.lastline {
    padding-left: 2.1em; // for the 0.1em border-left in .lastline > .lineconn
}
li.line {
    border-left: 0.1em solid #6185a0;
}
li.line > span.lineconn, li.lastline > span.lineconn {
    position: absolute;
    height: 0.65em;
    left: 0em;
    width: 1.5em;
    border-bottom: 0.1em solid #6185a0;
}
li.lastline > span.lineconn {
    border-left: 0.1em solid #6185a0;
}
em.storeref {
    color: #500000;
    position: relative; 
    width: 100%;
}
em.storeref:hover {
    background-color: #eeeeee;
}
*.popup {
    display: none;
/*    background: url('http://losser.st-lab.cs.uu.nl/~mbravenb/menuback.png') repeat; */
    background: #ffffcd;
    border: solid #555555 1px;
    position: absolute;
    top: 0em;
    left: 0em;
    margin: 0;
    padding: 0;
    z-index: 100;
}
em.storeref:hover span.popup {
    display: inline;
}
.toggle {
    text-decoration: none;
}
.showTree, .hideTree {
    font-family: monospace;
    font-size: larger;
}
.error {
    color: #ff0000;
    font-weight: bold;
}

/* Acknowledgement: this is based on the Wikipedia table-of-contents
 * toggle. */
var idCounter = 0;
function showTreeToggle(isHidden) {
    if (document.getElementById) {
        var id = "toggle_" + idCounter;
        document.writeln(
            '<a href="javascript:toggleTree(\'' + id + '\')" class="toggle" id="' + id + '">' +
            '<span class="showTree" ' + (isHidden ? '' : 'style="display: none;"') + '>+</span>' +
            '<span class="hideTree" ' + (isHidden ? 'style="display: none;"' : '') + '>-</span>' +
            '</a>');
        idCounter = idCounter + 1;
    }
}
function toggleTree(id) {
    var href = document.getElementById(id);
    var node = href;
    var tree = null;
    while (node != null) {
        if (node.className == "nesting") tree = node;
        node = node.nextSibling;
    }
    node = href.firstChild;
    var hideTree = null;
    var showTree = null;
    while (node != null) {
        if (node.className == "showTree") showTree = node;
        else if (node.className == "hideTree") hideTree = node;
        node = node.nextSibling;
    }
    
    if (tree.style.display == 'none') {
        tree.style.display = '';
        hideTree.style.display = '';
        showTree.style.display = 'none';
    } else {
        tree.style.display = 'none';
        hideTree.style.display = 'none';
        showTree.style.display = '';
    }
}

<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method='html' encoding="UTF-8"
              doctype-public="-//W3C//DTD HTML 4.01//EN"
              doctype-system="http://www.w3.org/TR/html4/strict.dtd" />
  <xsl:template match="logfile">
    <ul class='toplevel'>
      <xsl:for-each select='line|nest'>
        <li>
          <xsl:apply-templates select='.'/>
        </li>
      </xsl:for-each>
    </ul>
  </xsl:template>
  
  <xsl:template match="nest">
    <!-- The tree should be collapsed by default if all children are
         unimportant or if the header is unimportant. -->
<!--    <xsl:variable name="collapsed"
                  select="count(.//line[not(@priority = 3)]) = 0 or ./head[@priority = 3]" /> -->
    <xsl:variable name="collapsed" select="count(.//*[@error]) = 0"/>
                  
    <xsl:variable name="style"><xsl:if test="$collapsed">display: none;</xsl:if></xsl:variable>
    <xsl:variable name="arg"><xsl:choose><xsl:when test="$collapsed">true</xsl:when><xsl:otherwise>false</xsl:otherwise></xsl:choose></xsl:variable>
    
    <script type='text/javascript'>showTreeToggle(<xsl:value-of select="$collapsed"/>)</script>
    <xsl:apply-templates select='head'/>
    <!-- Be careful to only generate <ul>s if there are <li>s, otherwise it’s malformed. -->
    <xsl:if test="line|nest">
      
      <ul class='nesting' style="{$style}">
        <xsl:for-each select='line|nest'>
          <!-- Is this the last line?  If so, mark it as such so that it
               can be rendered differently. -->
          <xsl:variable  name="class"><xsl:choose><xsl:when test="position() != last()">line</xsl:when><xsl:otherwise>lastline</xsl:otherwise></xsl:choose></xsl:variable>
        
          <li class='{$class}'>
            <span class='lineconn' />
            <span class='linebody'>
              <xsl:apply-templates select='.'/>
            </span>
          </li>
        </xsl:for-each>
      </ul>
    </xsl:if>
    
  </xsl:template>
  
  <xsl:template match="head|line">
    <code>
      <xsl:if test="@error">
        <xsl:attribute name="class">error</xsl:attribute>
      </xsl:if>
      <xsl:apply-templates/>
    </code>
  </xsl:template>
  
  <xsl:template match="storeref">
    <em class='storeref'>
      <span class='popup'><xsl:apply-templates/></span>
      <span class='elided'>/...</span><xsl:apply-templates select='name'/><xsl:apply-templates select='path'/>
    </em>
  </xsl:template>
  
</xsl:stylesheet>

<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:template match="@*|node()">
    <xsl:copy>
      <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
  </xsl:template>
  <xsl:template match="line">
    <line>
      <xsl:if test="contains(text(), ' *** ') or
                    contains(text(), 'LaTeX Error') or
                    contains(text(), 'FAIL:') or
                    contains(text(), ' error: ') or
                    true">
         <xsl:attribute name="error"></xsl:attribute>
      </xsl:if>
      <xsl:apply-templates select="@*|node()"/>
    </line>
  </xsl:template>
  
</xsl:stylesheet>