none.c revision 1574 
1/*-
2 * Copyright (c) 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Paul Borman at Krystal Technologies.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#if defined(LIBC_SCCS) && !defined(lint)
38static char sccsid[] = "@(#)none.c	8.1 (Berkeley) 6/4/93";
39#endif /* LIBC_SCCS and not lint */
40
41#include <stddef.h>
42#include <stdio.h>
43#include <rune.h>
44#include <errno.h>
45#include <stdlib.h>
46
47rune_t	_none_sgetrune __P((const char *, size_t, char const **));
48int	_none_sputrune __P((rune_t, char *, size_t, char **));
49
50int
51_none_init(rl)
52	_RuneLocale *rl;
53{
54	rl->sgetrune = _none_sgetrune;
55	rl->sputrune = _none_sputrune;
56	_CurrentRuneLocale = rl;
57	__mb_cur_max = 1;
58	return(0);
59}
60
61rune_t
62_none_sgetrune(string, n, result)
63	const char *string;
64	size_t n;
65	char const **result;
66{
67	int c;
68
69	if (n < 1) {
70		if (result)
71			*result = string;
72		return(_INVALID_RUNE);
73	}
74	if (result)
75		*result = string + 1;
76	return(*string & 0xff);
77}
78
79int
80_none_sputrune(c, string, n, result)
81	rune_t c;
82	char *string, **result;
83	size_t n;
84{
85	if (n >= 1) {
86		if (string)
87			*string = c;
88		if (result)
89			*result = string + 1;
90	} else if (result)
91		*result = (char *)0;
92	return(1);
93}
94