f3b019d1d2
keep the default behavior for stdoutstream since the character needs to flush every output Signed-off-by: chao.an <anchao@xiaomi.com>
111 lines
3.6 KiB
C
111 lines
3.6 KiB
C
/****************************************************************************
|
|
* libs/libc/stdio/lib_rawsostream.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 <nuttx/config.h>
|
|
|
|
#include <unistd.h>
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
|
|
#include <nuttx/fs/fs.h>
|
|
|
|
#include "libc.h"
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: rawoutstream_puts
|
|
****************************************************************************/
|
|
|
|
static int rawoutstream_puts(FAR struct lib_outstream_s *this,
|
|
FAR const void *buf, int len)
|
|
{
|
|
FAR struct lib_rawoutstream_s *rthis =
|
|
(FAR struct lib_rawoutstream_s *)this;
|
|
int nwritten = 0;
|
|
int ret = 0;
|
|
|
|
while (nwritten != len)
|
|
{
|
|
ret = _NX_WRITE(rthis->fd, (FAR const char *)buf + nwritten,
|
|
len - nwritten);
|
|
if (ret <= 0)
|
|
{
|
|
if (_NX_GETERRNO(ret) == EINTR)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
this->nput += ret;
|
|
nwritten += ret;
|
|
}
|
|
|
|
return nwritten > 0 ? nwritten : ret;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: rawoutstream_putc
|
|
****************************************************************************/
|
|
|
|
static void rawoutstream_putc(FAR struct lib_outstream_s *this, int ch)
|
|
{
|
|
char tmp = ch;
|
|
(void)rawoutstream_puts(this, &tmp, 1);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: lib_rawoutstream
|
|
*
|
|
* Description:
|
|
* Initializes a stream for use with a file descriptor.
|
|
*
|
|
* Input Parameters:
|
|
* outstream - User allocated, uninitialized instance of struct
|
|
* lib_rawoutstream_s to be initialized.
|
|
* fd - User provided file/socket descriptor (must have been opened
|
|
* for write access).
|
|
*
|
|
* Returned Value:
|
|
* None (User allocated instance initialized).
|
|
*
|
|
****************************************************************************/
|
|
|
|
void lib_rawoutstream(FAR struct lib_rawoutstream_s *outstream, int fd)
|
|
{
|
|
outstream->public.put = rawoutstream_putc;
|
|
outstream->public.puts = rawoutstream_puts;
|
|
outstream->public.flush = lib_noflush;
|
|
outstream->public.nput = 0;
|
|
outstream->fd = fd;
|
|
}
|