Examples of java.nio.file.attribute.PosixFileAttributeView.readAttributes()

Class java.nio.file.attribute.PosixFileAttributeView

Examples of java.nio.file.attribute.PosixFileAttributeView.readAttributes()

java.nio.file.attribute.PosixFileAttributeView.readAttributes()
@throws IOException {@inheritDoc} @throws SecurityException In the case of the default provider, a security manager is installed, and it denies {@link RuntimePermission}("accessUserInformation") or its {@link SecurityManager#checkRead(String) checkRead} methoddenies read access to the file.


      Map<String, String[]> attributes = new HashMap<String, String[]>();


      PosixFileAttributeView posixView = Files.getFileAttributeView(path, PosixFileAttributeView.class, LinkOption.NOFOLLOW_LINKS);
      if (posixView != null) {
        final PosixFileAttributes attr = posixView.readAttributes();
        if (type.equals(ItemType.LINK)) {
          attributes.put(Item.ATTRIBUTE_POSIX, new String[] { attr.group().getName(), attr.owner().getName() });
        } else {
          attributes.put(Item.ATTRIBUTE_POSIX, new String[] { attr.group().getName(), attr.owner().getName(), fromPermissions(attr.permissions()).toString() });
        }

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        // TODO: This requires Java 7 APIs and may not work on Android
        Path path = Paths.get(pathString);
        PosixFileAttributeView view = Files.getFileAttributeView(path, PosixFileAttributeView.class, LinkOption.NOFOLLOW_LINKS);
        try {
            if (view != null) {
                return view.readAttributes().creationTime();
            }
        } catch (IOException ioe) {
            // ignore, just fall back on ctime
        }
        return null;

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    assertNotNull(view);


    assertThat(view.name()).isEqualTo("posix");
    assertThat(view.getOwner()).isEqualTo(createUserPrincipal("user"));


    PosixFileAttributes attrs = view.readAttributes();
    assertThat(attrs.fileKey()).isEqualTo(0);
    assertThat(attrs.owner()).isEqualTo(createUserPrincipal("user"));
    assertThat(attrs.group()).isEqualTo(createGroupPrincipal("group"));
    assertThat(attrs.permissions()).isEqualTo(PosixFilePermissions.fromString("rw-r--r--"));

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    view.setOwner(createUserPrincipal("root"));
    assertThat(view.getOwner()).isEqualTo(createUserPrincipal("root"));
    assertThat(file.getAttribute("owner", "owner")).isEqualTo(createUserPrincipal("root"));


    view.setGroup(createGroupPrincipal("root"));
    assertThat(view.readAttributes().group()).isEqualTo(createGroupPrincipal("root"));
    assertThat(file.getAttribute("posix", "group")).isEqualTo(createGroupPrincipal("root"));


    view.setPermissions(PosixFilePermissions.fromString("rwx------"));
    assertThat(view.readAttributes().permissions()).isEqualTo(
        PosixFilePermissions.fromString("rwx------"));

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    view.setGroup(createGroupPrincipal("root"));
    assertThat(view.readAttributes().group()).isEqualTo(createGroupPrincipal("root"));
    assertThat(file.getAttribute("posix", "group")).isEqualTo(createGroupPrincipal("root"));


    view.setPermissions(PosixFilePermissions.fromString("rwx------"));
    assertThat(view.readAttributes().permissions()).isEqualTo(
        PosixFilePermissions.fromString("rwx------"));
    assertThat(file.getAttribute("posix", "permissions")).isEqualTo(
        PosixFilePermissions.fromString("rwx------"));
  }

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