text: /****************************************************************************
   * libs/libc/stream/lib_zeroinstream.c
   *
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.  The
   * ASF licenses this file to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance with the
   * License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
   * License for the specific language governing permissions and limitations
   * under the License.
   *
   ****************************************************************************/
  
  /****************************************************************************
   * Included Files
   ****************************************************************************/
  
  #include <stdio.h>
  #include <errno.h>
  #include "libc.h"
  
  /****************************************************************************
   * Private Functions
   ****************************************************************************/
  
  static int zeroinstream_getc(FAR struct lib_instream_s *this)
  {
    this->nget++;
    return 0;
  }
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: lib_zeroinstream
   *
   * Description:
   *   Initializes a NULL stream.  The initialized stream will return an
   *   infinitely long stream of zeroes.
   *
   * Input Parameters:
   *   zeroinstream  - User allocated, uninitialized instance of struct
   *                   lib_instream_s to be initialized.
   *
   * Returned Value:
   *   None (User allocated instance initialized).
   *
   ****************************************************************************/
  
  void lib_zeroinstream(FAR struct lib_instream_s *zeroinstream)
  {
    zeroinstream->get  = zeroinstream_getc;
    zeroinstream->nget = 0;
  }
  