diff options
Diffstat (limited to 'nuttx/lib/lib_rawstream.c')
-rw-r--r-- | nuttx/lib/lib_rawstream.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/nuttx/lib/lib_rawstream.c b/nuttx/lib/lib_rawstream.c new file mode 100644 index 0000000000..e7c194f477 --- /dev/null +++ b/nuttx/lib/lib_rawstream.c @@ -0,0 +1,78 @@ +/************************************************************ + * lib_rawstream.c + * + * Copyright (C) 2007 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 Gregory Nutt 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. + * + ************************************************************/ + +/************************************************************ + * Included Files + ************************************************************/ + +#include <stdio.h> +#include <errno.h> +#include "lib_internal.h" + +/************************************************************ + * Private Functions + ************************************************************/ + +static void rawstream_putc(struct lib_stream_s *this, int ch) +{ + struct lib_rawstream_s *rthis = (struct lib_rawstream_s *)this; + char buffer = ch; + if (this && rthis->fd >= 0) + { + int nwritten; + do + { + nwritten = write(rthis->fd, &buffer, 1); + if (nwritten == 1) + { + this->nput++; + } + } + while (nwritten < 0 && *get_errno_ptr() == EINTR); + } +} + +/************************************************************ + * Public Functions + ************************************************************/ + +void lib_rawstream(struct lib_rawstream_s *rawstream, int fd) +{ + rawstream->public.put = rawstream_putc; + rawstream->public.nput = 0; + rawstream->fd = fd; +} + + |