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diff --git a/org.argeo.slc.agent/src/main/java/org/argeo/slc/ant/AntRegistryUtil.java b/org.argeo.slc.agent/src/main/java/org/argeo/slc/ant/AntRegistryUtil.java
new file mode 100644
index 000000000..e81fb30eb
--- /dev/null
+++ b/org.argeo.slc.agent/src/main/java/org/argeo/slc/ant/AntRegistryUtil.java
@@ -0,0 +1,121 @@
+package org.argeo.slc.ant;
+
+import java.io.File;
+import java.net.URL;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.tools.ant.Project;
+import org.apache.tools.ant.ProjectHelper;
+import org.apache.tools.ant.listener.CommonsLoggingListener;
+import org.argeo.slc.core.structure.StructurePath;
+import org.argeo.slc.core.structure.StructureRegistry;
+
+/** Utilities to manipulate the structure registry in SLC Ant. */
+public class AntRegistryUtil {
+	private static Log log = LogFactory.getLog(AntRegistryUtil.class);
+
+	/** Reads a structure registry from an Ant file without executing it. */
+	public static StructureRegistry readRegistry(File antFile) {
+		if (log.isDebugEnabled())
+			log.debug("Reads registry for Ant file " + antFile);
+		Project p = new Project();
+		p.setUserProperty("ant.file", antFile.getAbsolutePath());
+		p.setBaseDir(antFile.getParentFile());
+		p.init();
+		ProjectHelper helper = new SlcProjectHelper();
+		p.addReference(ProjectHelper.PROJECTHELPER_REFERENCE, helper);
+		helper.parse(p, antFile);
+
+		StructureRegistry registry = (StructureRegistry) p
+				.getReference(SlcProjectHelper.REF_STRUCTURE_REGISTRY);
+		registry.setMode(StructureRegistry.READ);
+
+		p.executeTarget(p.getDefaultTarget());
+		return registry;
+	}
+
+	/** Executes only the active paths of the Ant file. */
+	public static Project runActive(File antFile,
+			List<StructurePath> activePaths) {
+		if (log.isDebugEnabled())
+			log.debug("Runs the " + activePaths.size()
+					+ " provided active paths of Ant file " + antFile);
+		Project p = new Project();
+		p.setUserProperty("ant.file", antFile.getAbsolutePath());
+		p.setBaseDir(antFile.getParentFile());
+		p.init();
+		ProjectHelper helper = new SlcProjectHelper();
+		p.addReference(ProjectHelper.PROJECTHELPER_REFERENCE, helper);
+		helper.parse(p, antFile);
+
+		StructureRegistry registry = (StructureRegistry) p
+				.getReference(SlcProjectHelper.REF_STRUCTURE_REGISTRY);
+		registry.setMode(StructureRegistry.ACTIVE);
+		registry.setActivePaths(activePaths);
+
+		runProject(p, null);
+		return p;
+	}
+
+	/** Executes all paths of the provided target of the Ant file. */
+	public static Project runAll(File antFile, String target) {
+		if (log.isDebugEnabled())
+			log.debug("Runs all paths of Ant file " + antFile);
+		Project p = new Project();
+		p.setUserProperty("ant.file", antFile.getAbsolutePath());
+		p.setBaseDir(antFile.getParentFile());
+		p.init();
+		ProjectHelper helper = new SlcProjectHelper();
+		p.addReference(ProjectHelper.PROJECTHELPER_REFERENCE, helper);
+		helper.parse(p, antFile);
+
+		runProject(p, target);
+		return p;
+	}
+
+	/** Executes all paths of the provided target of the Ant URL. */
+	public static Project runAll(URL url, String target, Properties properties) {
+		if (log.isDebugEnabled())
+			log.debug("Runs all paths of Ant URL " + url);
+		Project p = new Project();
+		p.setUserProperty("ant.file", url.toString());
+		// p.setBaseDir(url.toString());
+		p.addBuildListener(new CommonsLoggingListener());
+		p.init();
+		ProjectHelper helper = new SlcProjectHelper();
+		p.addReference(ProjectHelper.PROJECTHELPER_REFERENCE, helper);
+		helper.parse(p, url);
+
+		if (properties != null) {
+			for (Map.Entry<Object, Object> entry : properties.entrySet()) {
+				p.setUserProperty(entry.getKey().toString(), entry.getValue()
+						.toString());
+			}
+		}
+
+		runProject(p, target);
+		return p;
+	}
+
+	/** Executes all paths of the default target of the Ant file. */
+	public static Project runAll(File antFile) {
+		return runAll(antFile, null);
+	}
+
+	protected static void runProject(Project p, String target) {
+		p.fireBuildStarted();
+		Throwable exception = null;
+		try {
+			p.executeTarget(target != null ? target : p.getDefaultTarget());
+		} catch (Throwable e) {
+			exception = e;
+			log.error("Exception when running Ant: ",e);
+		} finally {
+			p.fireBuildFinished(exception);
+		}
+	}
+}