1 /*
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms are permitted
6 * provided that the above copyright notice and this paragraph are
7 * duplicated in all such forms and that any documentation,
8 * and/or other materials related to such
9 * distribution and use acknowledge that the software was developed
10 * by the University of California, Berkeley. The name of the
11 * University may not be used to endorse or promote products derived
12 * from this software without specific prior written permission.
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16 */
17 /* No user fns here. Pesch 15apr92. */
18
19 #if defined(LIBC_SCCS) && !defined(lint)
20 static char sccsid[] = "%W% (Berkeley) %G%";
21 #endif /* LIBC_SCCS and not lint */
22
23 #define _DEFAULT_SOURCE
24 #include <stdio.h>
25 #include <errno.h>
26 #include "local.h"
27
28 /*
29 * Handle getc() when the buffer ran out:
30 * Refill, then return the first character
31 * in the newly-filled buffer.
32 */
33
34 int
_srget(register FILE * fp)35 _srget (
36 register FILE *fp)
37 {
38 /* Ensure that any fake std stream is resolved before
39 we call __srefill_r so we may access the true read buffer. */
40 CHECK_INIT(ptr, fp);
41
42 /* Have to set and check orientation here, otherwise the macros in
43 stdio.h never set it. */
44 if (ORIENT (fp, -1) != -1)
45 return EOF;
46
47 if (_srefill (fp) == 0)
48 {
49 fp->_r--;
50 return *fp->_p++;
51 }
52 return EOF;
53 }
54
