Method skipSafely

guava/src/com/google/common/io/ByteStreams.java:879–882

Attempts to skip up to {@code n} bytes from the given input stream, but not more than {@code in.available()} bytes. This prevents {@code FileInputStream} from skipping more bytes than actually remain in the file, something that it {@linkplain java.io.FileInputStream#skip(long) specifies} it can do i

(InputStream in, long n)

   * {@code InputStream.skip()}.
   */
  private static long skipSafely(InputStream in, long n) throws IOException {
    int available = in.available();
    return available == 0 ? 0 : in.skip(min(available, n));
  }

  /**
   * Process the bytes of the given input stream using the given processor.