X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;ds=sidebyside;f=org.argeo.cms%2Fsrc%2Forg%2Fargeo%2Fcms%2Facr%2FContentUtils.java;h=cfd90f93c1d5e77aa86e900985646095204adf4c;hb=a3b108c64c2d33fd8c953288e638e28cb60c226a;hp=ed27ce8e8366a24c5fcd2ce0e285026c3ff1afa9;hpb=feddb4be70a8304dd4a533efee6e14c22691b500;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.cms/src/org/argeo/cms/acr/ContentUtils.java b/org.argeo.cms/src/org/argeo/cms/acr/ContentUtils.java
index ed27ce8e8..cfd90f93c 100644
--- a/org.argeo.cms/src/org/argeo/cms/acr/ContentUtils.java
+++ b/org.argeo.cms/src/org/argeo/cms/acr/ContentUtils.java
@@ -3,6 +3,7 @@ package org.argeo.cms.acr;
 import java.io.PrintStream;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Objects;
 import java.util.StringJoiner;
 import java.util.function.BiConsumer;
 
@@ -16,9 +17,9 @@ import org.argeo.api.acr.ContentSession;
 import org.argeo.api.acr.DName;
 import org.argeo.api.cms.CmsAuth;
 import org.argeo.api.cms.directory.CmsDirectory;
+import org.argeo.api.cms.directory.CmsUserManager;
 import org.argeo.api.cms.directory.HierarchyUnit;
 import org.argeo.api.cms.directory.UserDirectory;
-import org.argeo.cms.CmsUserManager;
 import org.argeo.cms.util.CurrentSubject;
 import org.osgi.service.useradmin.Role;
 
@@ -195,6 +196,23 @@ public class ContentUtils {
 		}
 	}
 
+	/**
+	 * Constructs a relative path between a base path and a given path.
+	 * 
+	 * @throws IllegalArgumentException if the base path is not an ancestor of the
+	 *                                  path
+	 */
+	public static String relativize(String basePath, String path) throws IllegalArgumentException {
+		Objects.requireNonNull(basePath);
+		Objects.requireNonNull(path);
+		if (!path.startsWith(basePath))
+			throw new IllegalArgumentException(basePath + " is not an ancestor of " + path);
+		String relativePath = path.substring(basePath.length());
+		if (relativePath.length() > 0 && relativePath.charAt(0) == '/')
+			relativePath = relativePath.substring(1);
+		return relativePath;
+	}
+
 	/** Singleton. */
 	private ContentUtils() {