// TODO Break this up between simple normalizers and Java classpath normalizers
//      The latter should be moved to :normalization-java
public enum InputNormalizer implements FileNormalizer {
    ABSOLUTE_PATH(false),
    RELATIVE_PATH(false),
    NAME_ONLY(false),
    IGNORE_PATH(true),
    RUNTIME_CLASSPATH(true),
    COMPILE_CLASSPATH(true);

    private final boolean ignoreDirectories;
    private final String description;

                               const char* extension);

  // Given directory = "dir", relative_path = "test.xml",
  // returns "dir/test.xml".
  // On Windows, uses \ as the separator rather than /.
  static FilePath ConcatPaths(const FilePath& directory,
                              const FilePath& relative_path);

  // Returns a pathname for a file that does not currently exist. The pathname