public static boolean isSymbolicLink()

in google-http-client/src/main/java/com/google/api/client/util/IOUtils.java [186:221]

26 lines of code
9 McCabe index (conditional complexity)


  public static boolean isSymbolicLink(File file) throws IOException {
    // first try using Java 7
    try {
      // use reflection here
      Class<?> filesClass = Class.forName("java.nio.file.Files");
      Class<?> pathClass = Class.forName("java.nio.file.Path");
      Object path = File.class.getMethod("toPath").invoke(file);
      return ((Boolean) filesClass.getMethod("isSymbolicLink", pathClass).invoke(null, path))
          .booleanValue();
    } catch (InvocationTargetException exception) {
      Throwable cause = exception.getCause();
      Throwables.propagateIfPossible(cause, IOException.class);
      // shouldn't reach this point, but just in case...
      throw new RuntimeException(cause);
    } catch (ClassNotFoundException exception) {
      // handled below
    } catch (IllegalArgumentException exception) {
      // handled below
    } catch (SecurityException exception) {
      // handled below
    } catch (IllegalAccessException exception) {
      // handled below
    } catch (NoSuchMethodException exception) {
      // handled below
    }
    // backup option compatible with earlier Java
    // this won't work on Windows, which is where separator char is '\\'
    if (File.separatorChar == '\\') {
      return false;
    }
    File canonical = file;
    if (file.getParent() != null) {
      canonical = new File(file.getParentFile().getCanonicalFile(), file.getName());
    }
    return !canonical.getCanonicalFile().equals(canonical.getAbsoluteFile());
  }