X-Git-Url: http://git.argeo.org/?a=blobdiff_plain;f=org.argeo.slc.core%2Fsrc%2Fmain%2Fjava%2Forg%2Fargeo%2Fslc%2Fspring%2FSpringUtils.java;h=73f1ffde37647b9465267ef4cec4316e6dcd17c5;hb=80389feff3ab8e8743db4abfb6493285f72b24dd;hp=fc9b656867246ee5610ab7205c7e12d61864f040;hpb=badf9bb44d12177bea24679106d7122f51584ebc;p=gpl%2Fargeo-slc.git

diff --git a/org.argeo.slc.core/src/main/java/org/argeo/slc/spring/SpringUtils.java b/org.argeo.slc.core/src/main/java/org/argeo/slc/spring/SpringUtils.java
index fc9b65686..73f1ffde3 100644
--- a/org.argeo.slc.core/src/main/java/org/argeo/slc/spring/SpringUtils.java
+++ b/org.argeo.slc.core/src/main/java/org/argeo/slc/spring/SpringUtils.java
@@ -1,10 +1,18 @@
 package org.argeo.slc.spring;
 
+import java.io.IOException;
 import java.util.Map;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.argeo.slc.core.SlcException;
 import org.springframework.beans.factory.ListableBeanFactory;
+import org.springframework.core.io.DefaultResourceLoader;
+import org.springframework.core.io.Resource;
 
 public class SpringUtils {
+	private final static Log log = LogFactory.getLog(SpringUtils.class);
+
 	public static <T> T loadSingleFromContext(ListableBeanFactory context,
 			Class<T> clss) {
 		Map<String, T> beans = context.getBeansOfType(clss);
@@ -15,6 +23,39 @@ public class SpringUtils {
 		}
 	}
 
+	public static Resource getParent(Resource res) {
+		try {
+			if (res.getURL().getPath().equals("/"))
+				return null;
+
+			String urlStr = res.getURL().toString();
+			if (urlStr.charAt(urlStr.length() - 1) == '/')
+				urlStr = urlStr.substring(0, urlStr.length() - 2);
+
+			String parentUrlStr = urlStr.substring(0, urlStr.lastIndexOf('/'));
+			return new DefaultResourceLoader(Thread.currentThread()
+					.getContextClassLoader()).getResource(parentUrlStr + '/');
+		} catch (IOException e) {
+			throw new SlcException("Cannot get parent for resource " + res, e);
+		}
+	}
+
+	public static String extractRelativePath(Resource ancestor, Resource child) {
+		try {
+			String childPath = child.getURL().getPath();
+			String ancestorPath = ancestor.getURL().getPath();
+
+			if (log.isTraceEnabled())
+				log.trace("extractRelativePath(): childPath=" + childPath
+						+ ", ancestorPath=" + ancestorPath);
+
+			return childPath.substring(ancestorPath.length());
+		} catch (IOException e) {
+			throw new SlcException("Cannot extract relative path of " + child
+					+ " based on " + ancestor, e);
+		}
+	}
+
 	private SpringUtils() {
 
 	}