| /**************************************************************************** |
| * libs/libc/stream/lib_nullinstream.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 nullinstream_getc(FAR struct lib_instream_s *self) |
| { |
| UNUSED(self); |
| return EOF; |
| } |
| |
| static int nullinstream_gets(FAR struct lib_instream_s *self, |
| FAR void *buffer, int len) |
| { |
| UNUSED(buffer); |
| UNUSED(len); |
| return EOF; |
| } |
| |
| /**************************************************************************** |
| * Public Functions |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Name: lib_nullinstream |
| * |
| * Description: |
| * Initializes a NULL stream. The initialized stream will will return only |
| * EOF. |
| * |
| * Input Parameters: |
| * stream - User allocated, uninitialized instance of struct |
| * lib_instream_s to be initialized. |
| * |
| * Returned Value: |
| * None (User allocated instance initialized). |
| * |
| ****************************************************************************/ |
| |
| void lib_nullinstream(FAR struct lib_instream_s *stream) |
| { |
| stream->getc = nullinstream_getc; |
| stream->gets = nullinstream_gets; |
| stream->nget = 0; |
| } |