diff options
Diffstat (limited to 'nuttx/libc/stdio/lib_ungetc.c')
-rw-r--r-- | nuttx/libc/stdio/lib_ungetc.c | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/nuttx/libc/stdio/lib_ungetc.c b/nuttx/libc/stdio/lib_ungetc.c deleted file mode 100644 index 178aeddd1..000000000 --- a/nuttx/libc/stdio/lib_ungetc.c +++ /dev/null @@ -1,121 +0,0 @@ -/**************************************************************************** - * libc/stdio/lib_ungetc.c - * - * Copyright (C) 2007, 2008, 2011 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************/ - -/**************************************************************************** - * Compilation Switches - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> -#include <stdio.h> -#include <fcntl.h> -#include <errno.h> -#include <nuttx/fs/fs.h> -#include "lib_internal.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Type Declarations - ****************************************************************************/ - -/**************************************************************************** - * Private Function Prototypes - ****************************************************************************/ - -/**************************************************************************** - * Global Function Prototypes - ****************************************************************************/ - -/************************************************************************** - * Global Constant Data - **************************************************************************/ - -/**************************************************************************** - * Global Variables - ****************************************************************************/ - -/************************************************************************** - * Private Constant Data - **************************************************************************/ - -/**************************************************************************** - * Private Variables - **************************************************************************/ - -/**************************************************************************** - * Public Functions - **************************************************************************/ - -/**************************************************************************** - * Name: ungetc - **************************************************************************/ - -int ungetc(int c, FAR FILE *stream) -{ -#if CONFIG_NUNGET_CHARS > 0 - int nungotten; -#endif - - /* Stream must be open for read access */ - - if ((stream && stream->fs_filedes < 0) || - ((stream->fs_oflags & O_RDOK) == 0)) - { - set_errno(EBADF); - return EOF; - } - -#if CONFIG_NUNGET_CHARS > 0 - nungotten = stream->fs_nungotten; - if (stream->fs_nungotten < CONFIG_NUNGET_CHARS) - { - stream->fs_ungotten[nungotten] = c; - stream->fs_nungotten = nungotten + 1; - return c; - } - else -#endif - { - set_errno(ENOMEM); - return EOF; - } -} - |