src/java.base/unix/classes/sun/nio/fs/UnixPath.java

*** 1,7 ****
  /*
!  * Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
--- 1,7 ----
  /*
!  * Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
*** 23,42 ****
   * questions.
   */
  
  package sun.nio.fs;
  
! import java.nio.*;
! import java.nio.file.*;
! import java.nio.charset.*;
! import java.io.*;
! import java.net.URI;
! import java.util.*;
  import java.lang.ref.SoftReference;
! 
! import static sun.nio.fs.UnixNativeDispatcher.*;
! import static sun.nio.fs.UnixConstants.*;
  
  /**
   * Solaris/Linux implementation of java.nio.file.Path
   */
  
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   * questions.
   */
  
  package sun.nio.fs;
  
! import java.io.IOException;
  import java.lang.ref.SoftReference;
! import java.net.URI;
! import java.nio.ByteBuffer;
! import java.nio.CharBuffer;
! import java.nio.charset.CharsetEncoder;
! import java.nio.charset.CoderResult;
! import java.nio.charset.CodingErrorAction;
! import java.nio.file.InvalidPathException;
! import java.nio.file.LinkOption;
! import java.nio.file.ProviderMismatchException;
! import java.nio.file.Path;
! import java.nio.file.WatchEvent;
! import java.nio.file.WatchKey;
! import java.nio.file.WatchService;
! import java.util.Arrays;
! import java.util.Objects;
! import java.util.stream.Stream;
! 
! import static sun.nio.fs.UnixConstants.EINVAL;
! import static sun.nio.fs.UnixConstants.ELOOP;
! import static sun.nio.fs.UnixConstants.O_NOFOLLOW;
! import static sun.nio.fs.UnixConstants.O_RDONLY;
! import static sun.nio.fs.UnixNativeDispatcher.open;
! import static sun.nio.fs.UnixNativeDispatcher.realpath;
  
  /**
   * Solaris/Linux implementation of java.nio.file.Path
   */
  
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          System.arraycopy(path, 0, result, 0, len);
          return new UnixPath(getFileSystem(), result);
      }
  
      @Override
+     public String getExtension() {
+         final int length = path.length;
+ 
+         int lastDotIndex = -1;
+         for (int i = length - 1; i >= 0; i--) {
+             byte b = path[i];
+             if (b == '.') {
+                 lastDotIndex = i;
+                 break;
+             } else if (b == '/') {
+                 break;
+             }
+         }
+ 
+         if (lastDotIndex < 0 || lastDotIndex == length - 1) {
+             return "";
+         }
+ 
+         int offset = lastDotIndex + 1;
+         return Util.toString(path, offset, length - offset);
+     }
+ 
+     @Override
      public int getNameCount() {
          initOffsets();
          return offsets.length;
      }