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POHow to setup W3C Unicorn validator for local URIs?
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  1. POHow to setup W3C Unicorn validator for local URIs?
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    copied!<p>I frequently need to check not-yet-public websites so cannot use a public online validator. I tried to install W3C’s <a href="http://code.w3.org/unicorn" rel="nofollow">Unicorn</a> on my OSX (10.7) machine using MacPorts (because I didn’t want to cope with dependencies). Unfortunately the docs for Unicorn installation are mostly missing or outdated, and the mailing list looks dead. Disclaimer: I don’t know Java.</p> <p>Here’s what I did:</p> <ul> <li>install Java update to 1.6.0_29 (since Apple’s current one has a memory leak)</li> <li><p>install Tomcat and dependencies (ivy is missing in docs and doesn’t get downloaded automatically as it is supposed to):</p> <pre><code>sudo port install apache-ant apache-ivy tomcat6 mercurial </code></pre></li> <li><p>select Python version for Mercurial; perhaps better use python.org-Python and install Mercurial there, but I’ve only system and MacPort’s Python on this machine:</p> <pre><code>sudo port select python python27 </code></pre></li> <li><p>automatically start Tomcat after reboot:</p> <pre><code>sudo launchctl load -w /Library/LaunchDaemons/org.macports.tomcat6.plist </code></pre></li> <li><p>add setup to <code>.profile</code>:</p> <pre><code>export JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK export CATALINA_HOME=/opt/local/share/java/tomcat6 </code></pre></li> <li><p>check output of <code>java -version</code> (my Java version in "A" or "Current" was broken; <code>java -version</code> just hang)</p></li> <li><p>fix Java binary path; if there's no <code>$JAVA_HOME/bin</code>:</p> <pre><code>cd $JAVA_HOME; sudo ln -s Commands bin </code></pre></li> <li><p>restart</p></li> <li><p>check if tomcat runs on <code>http://localhost:8080</code> (ok)</p></li> <li><p>get and compile unicorn:</p> <pre><code>cd ~/workspace hg clone https://dvcs.w3.org/hg/unicorn cd unicorn ant retrieve compress-css compress-js war cli </code></pre></li> <li><p>install unicorn in tomcat:</p> <pre><code>sudo cp dist/unicorn.war $CATALINA_HOME/webapps/ sudo cp WebContent/resources/tomcat_policy/* $CATALINA_HOME/conf/ </code></pre></li> <li><p><em>yes it works</em>, but only for public addresses; we need to change</p> <ul> <li>one setting in <code>unicorn.properties</code>: <code>ACCEPT_LOCAL_ADDRESSES = true</code></li> <li>validator paths in <code>observers.properties</code> from <code>http://validator.w3.org/.../*.wadl</code> to <code>file:///.../*.wadl</code></li> </ul></li> <li><p>I can change <code>*.properties</code> in <code>$CATALINA_HOME/webapps/unicorn/WEB-INF/classes</code> or (better) in <code>~/workspace/unicorn/WebContent/WEB_INF/conf</code>. But changes to the latter never make it into the <code>.war</code>, don’t know why. (Maybe they’re pacifist?) If <code>*.properties.default</code> are renamed to <code>*.properties</code>, they’re missing in the distribution, if I don’t rename them, changes are ignored. I found a hint to include that conf-path in <code>$CLASSPATH</code>, but that didn’t help either.</p></li> <li><p>So I copy the adapted configs into the installed webapp, and Unicorn seems to run - but validation results in a white page (status code = 200, but content length = 0).</p></li> <li><p>In tomcat’s error log I find only (don’t know if that’s important):</p> <pre><code>INFO: validateJarFile(/opt/local/share/java/tomcat6/webapps/unicorn/WEB-INF/lib/servlet-api-2.5.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class </code></pre></li> </ul> <h2>CLI</h2> <p>Inbetween I tried if the command line interface is usable. <code>java -jar unicorn.jar</code> shows some usage hints, but validation of anything fails with</p> <pre><code>Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 1 at org.w3c.unicorn.UnicornClient.main(UnicornClient.java:113) </code></pre> <h2>Finally</h2> <p>What can I do?</p>
 

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