newlib/newlib/libc/stdio/rget.c

60 lines
1.8 KiB
C

/*
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
/* No user fns here. Pesch 15apr92. */
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "%W% (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */
#include <_ansi.h>
#include <stdio.h>
#include <errno.h>
#include "local.h"
/*
* Handle getc() when the buffer ran out:
* Refill, then return the first character
* in the newly-filled buffer.
*/
int
_DEFUN(__srget_r, (ptr, fp),
struct _reent *ptr _AND
register FILE *fp)
{
/* Ensure that any fake std stream is resolved before
we call __srefill_r so we may access the true read buffer. */
CHECK_INIT(ptr, fp);
if (__srefill_r (ptr, fp) == 0)
{
fp->_r--;
return *fp->_p++;
}
return EOF;
}
/* This function isn't any longer declared in stdio.h, but it's
required for backward compatibility with applications built against
earlier dynamically built newlib libraries. */
int
_DEFUN(__srget, (fp),
register FILE *fp)
{
return __srget_r (_REENT, fp);
}