Method fill

java/src/org/openqa/selenium/json/Input.java:131–160

If all buffered input has been consumed, read the next chunk into the buffer. NOTE : The last 128 character of consumed input is retained for debug output. @return true if new input is available; false if input is exhausted @throws UncheckedIOException if an I/O exception

()

   * @throws UncheckedIOException if an I/O exception is encountered
   */
  private boolean fill() {
    // do we need to fill the buffer?
    while (filled == position + 1) {
      try {
        // free the buffer, keep only the chars to remember
        int shift = filled - MEMORY_SIZE;
        if (shift > 0) {
          position -= shift;
          filled -= shift;

          System.arraycopy(buffer, shift, buffer, 0, filled);
        }

        // try to fill the buffer
        int n = source.read(buffer, filled, buffer.length - filled);

        if (n == -1) {
          // EOF reached
          return false;
        } else {
          // n might be 0, the outer loop will handle this
          filled += n;
        }
      } catch (IOException e) {
        throw new UncheckedIOException(e.getMessage(), e);
      }
    }

    return true;
  }
}