221 lines
6.4 KiB
C
221 lines
6.4 KiB
C
/****************************************************************************
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* lib/stdio/lib_fputs.c
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*
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* Copyright (C) 2007, 2008, 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Compilation Switches
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <nuttx/arch.h>
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#include "lib_internal.h"
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Type Declarations
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Global Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Global Constant Data
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****************************************************************************/
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/****************************************************************************
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* Global Variables
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****************************************************************************/
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/****************************************************************************
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* Private Constant Data
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****************************************************************************/
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/****************************************************************************
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* Private Variables
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: fputs
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*
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* Description:
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* fputs() writes the string s to stream, without its trailing '\0'.
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*
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****************************************************************************/
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#if defined(CONFIG_ARCH_ROMGETC)
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int fputs(FAR const char *s, FAR FILE *stream)
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{
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int nput;
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int ret;
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char ch;
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/* Make sure that a string was provided. */
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#ifdef CONFIG_DEBUG /* Most parameter checking is disabled if DEBUG is off */
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if (!s)
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{
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set_errno(EINVAL);
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return EOF;
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}
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#endif
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/* Write the string. Loop until the null terminator is encountered */
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for (nput = 0, ch = up_romgetc(s); ch; nput++, s++, ch = up_romgetc(s))
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{
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/* Write the next character to the stream buffer */
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ret = lib_fwrite(&ch, 1, stream);
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if (ret <= 0)
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{
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return EOF;
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}
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/* Flush the buffer if a newline was written to the buffer */
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#ifdef CONFIG_STDIO_LINEBUFFER
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if (ch == '\n')
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{
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ret = lib_fflush(stream, true);
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if (ret < 0)
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{
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return EOF;
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}
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}
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#endif
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}
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return nput;
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}
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#elif defined(CONFIG_STDIO_LINEBUFFER)
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int fputs(FAR const char *s, FAR FILE *stream)
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{
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int nput;
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int ret;
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/* Make sure that a string was provided. */
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#ifdef CONFIG_DEBUG /* Most parameter checking is disabled if DEBUG is off */
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if (!s)
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{
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set_errno(EINVAL);
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return EOF;
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}
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#endif
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/* Write the string. Loop until the null terminator is encountered */
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for (nput = 0; *s; nput++, s++)
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{
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/* Write the next character to the stream buffer */
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ret = lib_fwrite(s, 1, stream);
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if (ret <= 0)
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{
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return EOF;
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}
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/* Flush the buffer if a newline was written to the buffer */
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if (*s == '\n')
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{
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ret = lib_fflush(stream, true);
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if (ret < 0)
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{
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return EOF;
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}
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}
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}
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return nput;
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}
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#else
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int fputs(FAR const char *s, FAR FILE *stream)
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{
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int ntowrite;
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int nput;
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/* Make sure that a string was provided. */
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#ifdef CONFIG_DEBUG /* Most parameter checking is disabled if DEBUG is off */
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if (!s)
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{
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set_errno(EINVAL);
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return EOF;
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}
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#endif
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/* Get the length of the string. */
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ntowrite = strlen(s);
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if (ntowrite == 0)
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{
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return 0;
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}
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/* Write the string */
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nput = lib_fwrite(s, ntowrite, stream);
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if (nput < 0)
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{
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return EOF;
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}
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return nput;
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}
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#endif
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