* libs/libc/stream/lib_lowoutstream.c
*
* SPDX-License-Identifier: Apache-2.0
*
* 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 <nuttx/config.h>
#ifdef CONFIG_ARCH_LOWPUTC
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <nuttx/arch.h>
#include "libc.h"
* Private Functions Prototypes
****************************************************************************/
static void lowoutstream_putc(FAR struct lib_outstream_s *self, int ch);
static ssize_t lowoutstream_puts(FAR struct lib_outstream_s *self,
FAR const void *buf, size_t len);
* Public Data
****************************************************************************/
struct lib_outstream_s g_lowoutstream =
{
0,
lowoutstream_putc,
lowoutstream_puts,
lib_noflush
};
* Private Functions
****************************************************************************/
* Name: lowoutstream_putc
****************************************************************************/
static void lowoutstream_putc(FAR struct lib_outstream_s *self, int ch)
{
DEBUGASSERT(self);
up_lowputc(ch);
if (ch != EOF)
{
self->nput++;
}
}
* Name: lowoutstream_puts
****************************************************************************/
static ssize_t lowoutstream_puts(FAR struct lib_outstream_s *self,
FAR const void *buf, size_t len)
{
FAR const char *str = (FAR const char *)buf;
size_t idx = 0;
DEBUGASSERT(self);
while (str[idx] != 0 && idx < len)
{
lowoutstream_putc(self, str[idx]);
idx++;
}
return len;
}
* Public Functions
****************************************************************************/
* Name: lib_lowoutstream
*
* Description:
* Initializes a stream for use with low-level, architecture-specific I/O.
*
* Input Parameters:
* stream - User allocated, uninitialized instance of struct
* lib_lowoutstream_s to be initialized.
*
* Returned Value:
* None (User allocated instance initialized).
*
****************************************************************************/
void lib_lowoutstream(FAR struct lib_outstream_s *stream)
{
stream->putc = lowoutstream_putc;
stream->puts = lowoutstream_puts;
stream->flush = lib_noflush;
stream->nput = 0;
}
#endif