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/* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org>
*
* GNU Library General Public License (LGPL) version 2 or later.
*
* Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details.
*/
#include "_stdio.h"
#ifdef __STDIO_BUFFERS
/* Read some data into the buffer.
* Returns number of bytes read into the buffer.
* If 0 is returned, then either EOF or ERROR.
* Side effects are those of _stdio_READ.
*/
size_t attribute_hidden __stdio_rfill(register FILE *__restrict stream)
{
size_t rv;
__STDIO_STREAM_VALIDATE(stream);
assert(stream->__filedes >= -2);
assert(__STDIO_STREAM_IS_READING(stream));
assert(!__STDIO_STREAM_BUFFER_RAVAIL(stream)); /* Buffer must be empty. */
assert(__STDIO_STREAM_BUFFER_SIZE(stream)); /* Must have a buffer. */
assert(!(stream->__modeflags & __FLAG_UNGOT));
#ifdef __UCLIBC_HAS_STDIO_GETC_MACRO__
assert(stream->__bufgetc_u == stream->__bufstart);
#endif
rv = __stdio_READ(stream, stream->__bufstart,
stream->__bufend - stream->__bufstart);
stream->__bufpos = stream->__bufstart;
stream->__bufread = stream->__bufstart + rv;
__STDIO_STREAM_VALIDATE(stream);
return rv;
}
#endif
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