bug(#4016): fixes

Author: maxonfjvipon

eo-maven-plugin/src/main/java/org/eolang/maven/EmptyDirectoriesIn.java

@@ -6,7 +6,6 @@
 
 import com.jcabi.log.Logger;
 import java.io.File;
-import java.nio.file.Files;
 import java.nio.file.Path;
 
 /**
@@ -18,27 +17,34 @@ final class EmptyDirectoriesIn {
     /**
      * Root path.
      */
-    private final Path root;
+    private final File root;
 
     /**
      * Ctor.
      * @param root Root directory.
      */
     EmptyDirectoriesIn(final Path root) {
+        this(root.toFile());
+    }
+
+    /**
+     * Ctor.
+     * @param root Root directory
+     */
+    EmptyDirectoriesIn(final File root) {
         this.root = root;
     }
 
     /**
      * Clear empty directories in {@code this.root}.
      */
     void clear() {
-        if (Files.isDirectory(this.root)) {
-            this.delete(this.root.toFile());
-        } else {
+        if (!this.root.isDirectory()) {
             throw new IllegalStateException(
                 Logger.format("Provided path %[file]s is not a directory", this.root)
             );
         }
+        this.delete(this.root);
     }
 
     /**
@@ -47,23 +53,20 @@ void clear() {
      * @checkstyle NestedIfDepthCheck (20 lines)
      */
     private void delete(final File dir) {
-        if (dir.isDirectory()) {
-            final File[] before = dir.listFiles();
-            if (before != null) {
-                for (final File file : before) {
-                    if (file.isDirectory()) {
-                        this.delete(file);
-                    }
+        if (!dir.isDirectory()) {
+            return;
+        }
+        final File[] before = dir.listFiles();
+        if (before != null) {
+            for (final File file : before) {
+                if (file.isDirectory()) {
+                    this.delete(file);
                 }
             }
-            final File[] after = dir.listFiles();
-            if (after != null
-                && after.length == 0
-                && !dir.equals(this.root.toFile())
-                && dir.delete()
-            ) {
-                Logger.debug(EmptyDirectoriesIn.class, "Deleted empty directory %[file]s", dir);
-            }
+        }
+        final File[] after = dir.listFiles();
+        if (after != null && after.length == 0 && !dir.equals(this.root) && dir.delete()) {
+            Logger.debug(EmptyDirectoriesIn.class, "Deleted empty directory %[file]s", dir);
         }
     }
 }

eo-maven-plugin/src/main/java/org/eolang/maven/UnspileMojo.java

@@ -78,7 +78,7 @@ private void unspile(final Walk classes) {
         if (filtered.isEmpty()) {
             Logger.info(
                 this, "No .class files out of %d deleted in %[file]s",
-                classes.size(), this.classesDir
+                classes.size(), this.classesDir.toPath()
             );
         } else {
             final int unspiled = new Threaded<>(
@@ -98,7 +98,7 @@ private void unspile(final Walk classes) {
                     return deleted;
                 }
             ).total();
-            new EmptyDirectoriesIn(this.classesDir.toPath()).clear();
+            new EmptyDirectoriesIn(this.classesDir).clear();
             Logger.info(
                 this,
                 "Deleted %d .class files in %[file]s",