[MSHARED-1351] - Fix console message when origin is baseDir

Print alternative message replacing the relative origin path
by the literal 'base directory'.

src/main/java/org/apache/maven/shared/filtering/DefaultMavenResourcesFiltering.java

@@ -36,6 +36,7 @@
 
 import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.io.IOUtils;
+import org.apache.commons.lang3.StringUtils;
 import org.apache.maven.model.Resource;
 import org.codehaus.plexus.util.DirectoryScanner;
 import org.codehaus.plexus.util.Scanner;
@@ -254,9 +255,15 @@ private File getTargetFile(File file) throws MavenFilteringException {
                 Path destination = getDestinationFile(outputDirectory, targetPath, "", mavenResourcesExecution)
                         .getAbsoluteFile()
                         .toPath();
+                String origin = basedir.relativize(
+                                resourceDirectory.getAbsoluteFile().toPath())
+                        .toString();
+                if (StringUtils.isEmpty(origin)) {
+                    origin = ".";
+                }
                 LOGGER.info("Copying " + includedFiles.size() + " resource" + (includedFiles.size() > 1 ? "s" : "")
                         + " from "
-                        + basedir.relativize(resourceDirectory.getAbsoluteFile().toPath())
+                        + origin
                         + " to "
                         + basedir.relativize(destination));
             } catch (Exception e) {

src/test/java/org/apache/maven/shared/filtering/ConsoleHolder.java

@@ -0,0 +1,88 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.maven.shared.filtering;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.PrintStream;
+
+/**
+ * Helping class to capture console input and output for tests.
+ *
+ * @author abelsromero
+ * @since 3.3.2
+ */
+class ConsoleHolder {
+
+    private PrintStream originalOut;
+    private PrintStream originalErr;
+
+    private ByteArrayOutputStream newOut;
+    private ByteArrayOutputStream newErr;
+
+    private ConsoleHolder() {}
+
+    static ConsoleHolder start() {
+        final ConsoleHolder holder = new ConsoleHolder();
+
+        holder.originalOut = System.out;
+        holder.originalErr = System.err;
+
+        holder.newOut = new DoubleOutputStream(holder.originalOut);
+        holder.newErr = new DoubleOutputStream(holder.originalErr);
+
+        System.setOut(new PrintStream(holder.newOut));
+        System.setErr(new PrintStream(holder.newErr));
+
+        return holder;
+    }
+
+    void release() {
+        System.setOut(originalOut);
+        System.setOut(originalErr);
+    }
+
+    String getOutput() {
+        return new String(newOut.toByteArray());
+    }
+
+    String getError() {
+        return new String(newErr.toByteArray());
+    }
+
+    static class DoubleOutputStream extends ByteArrayOutputStream {
+
+        final OutputStream other;
+
+        DoubleOutputStream(final OutputStream os) {
+            other = os;
+        }
+
+        @Override
+        public synchronized void write(final byte[] b, final int off, final int len) {
+            try {
+                other.write(b, off, len);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+            super.write(b, off, len);
+        }
+    }
+}

src/test/java/org/apache/maven/shared/filtering/DefaultMavenResourcesFilteringTest.java

@@ -31,6 +31,7 @@
 import java.util.Properties;
 
 import org.apache.commons.io.FileUtils;
+import org.apache.commons.lang3.StringUtils;
 import org.apache.maven.execution.MavenSession;
 import org.apache.maven.model.Resource;
 import org.apache.maven.settings.Settings;
@@ -366,6 +367,57 @@ void noFiltering() throws Exception {
         assertTrue(filesAreIdentical(initialImageFile, imageFile));
     }
 
+    @Test
+    void messageWhenCopyingFromSubDirectory() throws Exception {
+
+        String subDirectory = "src/test/units-files/maven-resources-filtering";
+        String unitFilesDir = String.format("%s/%s", getBasedir(), subDirectory);
+
+        assertMessage(
+                unitFilesDir,
+                "Copying (\\d)+ resources from " + subDirectory + " to target/DefaultMavenResourcesFilteringTest");
+    }
+
+    @Test
+    void messageWhenCopyingFromBaseDir() throws Exception {
+
+        String unitFilesDir = getBasedir();
+
+        assertMessage(unitFilesDir, "Copying (\\d)+ resources from . to target/DefaultMavenResourcesFilteringTest");
+    }
+
+    private void assertMessage(String directory, String expectedMessagePattern) throws Exception {
+        Resource resource = new Resource();
+        List<Resource> resources = new ArrayList<>();
+        resources.add(resource);
+
+        resource.setDirectory(directory);
+        resource.setFiltering(false);
+
+        MavenResourcesExecution mre = new MavenResourcesExecution();
+        mre.setResources(resources);
+        mre.setOutputDirectory(outputDirectory);
+        mre.setEncoding("UTF-8");
+        mre.setMavenProject(mavenProject);
+        mre.setFilters(null);
+        mre.setNonFilteredFileExtensions(Collections.emptyList());
+        mre.setMavenSession(new StubMavenSession());
+
+        ConsoleHolder console = ConsoleHolder.start();
+
+        mavenResourcesFiltering.filterResources(mre);
+
+        String output = console.getError();
+        String marker = DefaultMavenResourcesFiltering.class.getSimpleName();
+        String message = output.substring(output.indexOf(marker) + marker.length() + 3)
+                .trim()
+                .replaceAll("\\\\", "/");
+
+        boolean matches = message.matches(expectedMessagePattern);
+        assertTrue(matches, "expected: '" + expectedMessagePattern + "' does not match actual: '" + message + "'");
+        console.release();
+    }
+
     private static boolean filesAreIdentical(File expected, File current) throws IOException {
         if (expected.length() != current.length()) {
             return false;