Extract last part of a path

[lgpl/argeo-commons.git] / org.argeo.cms / src / org / argeo / cms / acr / ContentUtils.java

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 d324ac475283530ae658498f0bce39f305897225..facb5933bf3ebe743ce99eeed8e57c300d0cb11b 100644 (file)
--- a/org.argeo.cms/src/org/argeo/cms/acr/ContentUtils.java
+++ b/org.argeo.cms/src/org/argeo/cms/acr/ContentUtils.java
@@ -1,9 +1,13 @@
 package org.argeo.cms.acr;
 
 import java.io.PrintStream;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Objects;
 import java.util.StringJoiner;
+import java.util.StringTokenizer;
 import java.util.function.BiConsumer;
 
 import javax.security.auth.login.LoginContext;
@@ -15,6 +19,8 @@ import org.argeo.api.acr.ContentRepository;
 import org.argeo.api.acr.ContentSession;
 import org.argeo.api.acr.DName;
 import org.argeo.api.cms.CmsAuth;
+import org.argeo.api.cms.CmsConstants;
+import org.argeo.api.cms.CmsSession;
 import org.argeo.api.cms.directory.CmsDirectory;
 import org.argeo.api.cms.directory.CmsUserManager;
 import org.argeo.api.cms.directory.HierarchyUnit;
@@ -66,7 +72,6 @@ public class ContentUtils {
 
        public static final char SLASH = '/';
        public static final String SLASH_STRING = Character.toString(SLASH);
-       public static final String ROOT_SLASH = "" + SLASH;
        public static final String EMPTY = "";
 
        /**
@@ -102,7 +107,7 @@ public class ContentUtils {
 
        public static List<String> toPathSegments(String path) {
                List<String> res = new ArrayList<>();
-               if (EMPTY.equals(path) || ROOT_SLASH.equals(path))
+               if (EMPTY.equals(path) || Content.ROOT_PATH.equals(path))
                        return res;
                collectPathSegments(path, res);
                return res;
@@ -123,6 +128,16 @@ public class ContentUtils {
                        throw new IllegalArgumentException("Path " + path + " contains //");
        }
 
+       /** The last element of a path. */
+       public static String lastPathElement(String path) {
+               if (path.charAt(path.length() - 1) == '/')
+                       throw new IllegalArgumentException("Path " + path + " cannot end with '/'");
+               int index = path.lastIndexOf('/');
+               if (index < 0)
+                       return path;
+               return path.substring(index + 1);
+       }
+
        /*
         * DIRECTORY
         */
@@ -176,7 +191,7 @@ public class ContentUtils {
                }
        }
 
-       public static ContentSession openDataAdminSession(ContentRepository repository) {
+       public static ContentSession openDataAdminSession(ContentRepository contentRepository) {
                LoginContext loginContext;
                try {
                        loginContext = CmsAuth.DATA_ADMIN.newLoginContext();
@@ -189,12 +204,60 @@ public class ContentUtils {
                ClassLoader currentCl = Thread.currentThread().getContextClassLoader();
                try {
                        Thread.currentThread().setContextClassLoader(ContentUtils.class.getClassLoader());
-                       return CurrentSubject.callAs(loginContext.getSubject(), () -> repository.get());
+                       return CurrentSubject.callAs(loginContext.getSubject(), () -> contentRepository.get());
                } finally {
                        Thread.currentThread().setContextClassLoader(currentCl);
                }
        }
 
+       public static ContentSession openSession(ContentRepository contentRepository, CmsSession cmsSession) {
+               return CurrentSubject.callAs(cmsSession.getSubject(), () -> contentRepository.get());
+       }
+
+       /**
+        * 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;
+       }
+
+       /** A path in the node repository */
+       public static String getDataPath(Content node) {
+               // TODO make it more configurable?
+               StringBuilder buf = new StringBuilder(CmsConstants.PATH_API_ACR);
+               buf.append(node.getPath());
+               return buf.toString();
+       }
+
+       /** A path in the node repository */
+       public static String getDataPathForUrl(Content node) {
+               return cleanPathForUrl(getDataPath(node));
+       }
+
+       /** Clean reserved URL characters for use in HTTP links. */
+       public static String cleanPathForUrl(String path) {
+               StringTokenizer st = new StringTokenizer(path, "/");
+               StringBuilder sb = new StringBuilder();
+               while (st.hasMoreElements()) {
+                       sb.append('/');
+                       String encoded = URLEncoder.encode(st.nextToken(), StandardCharsets.UTF_8);
+                       encoded = encoded.replace("+", "%20");
+                       sb.append(encoded);
+
+               }
+               return sb.toString();
+       }
+
        /** Singleton. */
        private ContentUtils() {