Examples of java.nio.file.attribute.DosFileAttributeView

java.nio.file.attribute.DosFileAttributeView

A file attribute view that provides a view of the legacy "DOS" file attributes. These attributes are supported by file systems such as the File Allocation Table (FAT) format commonly used in consumer devices.

A {@code DosFileAttributeView} is a {@link BasicFileAttributeView} thatadditionally supports access to the set of DOS attribute flags that are used to indicate if the file is read-only, hidden, a system file, or archived.

Where dynamic access to file attributes is required, the attributes supported by this attribute view are as defined by {@code BasicFileAttributeView}, and in addition, the following attributes are supported:

Name Type

readonly {@link Boolean}

hidden {@link Boolean}

system {@link Boolean}

archive {@link Boolean}

Name	Type
readonly	{@link Boolean}
hidden	{@link Boolean}
system	{@link Boolean}
archive	{@link Boolean}

The {@link java.nio.file.Files#getAttribute getAttribute} method maybe used to read any of these attributes, or any of the attributes defined by {@link BasicFileAttributeView} as if by invoking the {@link #readAttributes readAttributes()} method.

The {@link java.nio.file.Files#setAttribute setAttribute} method maybe used to update the file's last modified time, last access time or create time attributes as defined by {@link BasicFileAttributeView}. It may also be used to update the DOS attributes as if by invoking the {@link #setReadOnly setReadOnly}, {@link #setHidden setHidden}, {@link #setSystem setSystem}, and {@link #setArchive setArchive} methods respectively. @since 1.7

        } else {
          attributes.put(Item.ATTRIBUTE_POSIX, new String[] { attr.group().getName(), attr.owner().getName(), fromPermissions(attr.permissions()).toString() });
        }
      } else {


        DosFileAttributeView dosView = Files.getFileAttributeView(path, DosFileAttributeView.class, LinkOption.NOFOLLOW_LINKS);
        if (dosView != null) {
          final DosFileAttributes attr = dosView.readAttributes();
          attributes.put(Item.ATTRIBUTE_DOS, new String[] { attr.isArchive() ? "1" : "0", attr.isHidden() ? "1" : "0", attr.isReadOnly() ? "1" : "0", attr.isSystem() ? "1" : "0" });
        }
      }


      if (!type.equals(ItemType.LINK)) {

    }
  }


  @Test
  public void testView() throws IOException {
    DosFileAttributeView view = provider.view(fileLookup(),
        ImmutableMap.<String, FileAttributeView>of(
            "basic", new BasicAttributeProvider().view(fileLookup(), NO_INHERITED_VIEWS)));
    assertNotNull(view);


    assertThat(view.name()).isEqualTo("dos");


    DosFileAttributes attrs = view.readAttributes();
    assertThat(attrs.isHidden()).isFalse();
    assertThat(attrs.isArchive()).isFalse();
    assertThat(attrs.isReadOnly()).isFalse();
    assertThat(attrs.isSystem()).isFalse();


    view.setArchive(true);
    view.setReadOnly(true);
    view.setHidden(true);
    view.setSystem(false);


    assertThat(attrs.isHidden()).isFalse();
    assertThat(attrs.isArchive()).isFalse();
    assertThat(attrs.isReadOnly()).isFalse();


    attrs = view.readAttributes();
    assertThat(attrs.isHidden()).isTrue();
    assertThat(attrs.isArchive()).isTrue();
    assertThat(attrs.isReadOnly()).isTrue();
    assertThat(attrs.isSystem()).isFalse();


    view.setTimes(FileTime.fromMillis(0L), null, null);
    assertThat(view.readAttributes().lastModifiedTime()).isEqualTo(FileTime.fromMillis(0L));
  }

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