btowc.c (6155c34adf50d3d025ec0e862bb34746ea8c0a21) btowc.c (e9fb70115fcb6811107e65763e62cac4f4304fcd)
1/*-
1/*-
2 * Copyright (c) 2002, 2003 Tim J. Robbins.
2 * Copyright (c) 2002 Tim J. Robbins.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright

--- 11 unchanged lines hidden (view full) ---

22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright

--- 11 unchanged lines hidden (view full) ---

22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
30#include <stdio.h>
30#include <rune.h>
31#include <wchar.h>
31#include <wchar.h>
32#include "mblocal.h"
33
34wint_t
35btowc(int c)
36{
32
33wint_t
34btowc(int c)
35{
37 static const mbstate_t initial;
38 mbstate_t mbs = initial;
36 rune_t r;
39 char cc;
37 char cc;
40 wchar_t wc;
41
42 if (c == EOF)
43 return (WEOF);
38
39 if (c == EOF)
40 return (WEOF);
44 /*
45 * We expect mbrtowc() to return 0 or 1, hence the check for n > 1
46 * which detects error return values as well as "impossible" byte
47 * counts.
48 */
49 cc = (char)c;
41 cc = (char)c;
50 if (__mbrtowc(&wc, &cc, 1, &mbs) > 1)
42 if ((r = sgetrune(&cc, 1, NULL)) == _INVALID_RUNE)
51 return (WEOF);
43 return (WEOF);
52 return (wc);
44 return (r);
53}
45}