ReactOS 0.4.15-dev-7681-g776c3a3
wchar.h
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1/* @(#)wchar.h 1.21 11/07/19 Copyright 2007-2011 J. Schilling */
2/*
3 * Abstraction from wchar.h
4 *
5 * Copyright (c) 2007-2011 J. Schilling
6 */
7/*
8 * The contents of this file are subject to the terms of the
9 * Common Development and Distribution License, Version 1.0 only
10 * (the "License"). You may not use this file except in compliance
11 * with the License.
12 *
13 * See the file CDDL.Schily.txt in this distribution for details.
14 *
15 * When distributing Covered Code, include this CDDL HEADER in each
16 * file and include the License file CDDL.Schily.txt from this distribution.
17 */
18
19#ifndef _SCHILY_WCHAR_H
20#define _SCHILY_WCHAR_H
21
22#ifndef _SCHILY_MCONFIG_H
23#include <schily/mconfig.h>
24#endif
25
26#ifndef _SCHILY_STDLIB_H
27#include <schily/stdlib.h> /* for MB_CUR_MAX, mbtowc()/wctomb() */
28#endif
29#ifndef _SCHILY_TYPES_H
30#include <schily/types.h>
31#endif
32#ifdef HAVE_STDDEF_H
33#ifndef _INCL_STDDEF_H
34#include <stddef.h> /* Needed for e.g. size_t (POSIX) */
35#define _INCL_STDDEF_H
36#endif
37#endif
38#ifndef _SCHILY_STDIO_H
39#include <schily/stdio.h> /* Needed for e.g. FILE (POSIX) */
40#endif
41#ifndef _SCHILY_VARARGS_H
42#include <schily/varargs.h> /* Needed for e.g. va_list (POSIX) */
43#endif
44
45
46#if !defined(HAVE_MBTOWC) || !defined(HAVE_WCTOMB)
47#if defined(HAVE_MBRTOWC) && defined(HAVE_WCRTOMB)
48# define mbtowc(wp, cp, len) mbrtowc(wp, cp, len, (mbstate_t *)0)
49# define wctomb(cp, wc) wcrtomb(cp, wc, (mbstate_t *)0)
50#else
51# define NO_WCHAR
52#endif
53#endif
54
55#ifdef HAVE_WCHAR_H
56
57#ifndef _INCL_WCHAR_H
58#include <wchar.h>
59#define _INCL_WCHAR_H
60#endif
61
62#ifndef HAVE_MBSINIT
63#define mbsinit(sp) ((int)((sp) == 0))
64#endif
65#ifndef HAVE_MBRTOWC
66#define mbrtowc(wp, cp, len, sp) mbtowc(wp, cp, len)
67#endif
68#ifndef HAVE_WCRTOMB
69#define wcrtomb(cp, wc, sp) wctomb(cp, wc)
70#endif
71
72#ifndef USE_WCHAR
73#define USE_WCHAR
74#endif
75
76#else /* HAVE_WCHAR_H */
77
78#undef USE_WCHAR
79#endif /* !HAVE_WCHAR_H */
80
81#if !defined(HAVE_WCTYPE_H) && !defined(HAVE_ISWPRINT)
82#undef USE_WCHAR
83#undef USE_WCTYPE
84#endif
85
86#ifdef NO_WCTYPE
87#undef USE_WCHAR
88#undef USE_WCTYPE
89#endif
90
91#ifdef NO_WCHAR
92#undef USE_WCHAR
93#undef USE_WCTYPE
94#endif
95
96#ifndef USE_WCHAR
97
98/*
99 * We either don't have wide chars or we don't use them...
100 */
101#undef wchar_t
102#define wchar_t char
103#undef wint_t
104#define wint_t int
105/*
106 * We cannot define wctype_t here because of a bug in Linux (missing xctype_t
107 * definition in wchar.h
108 */
109#ifdef __never__
110#undef wctype_t
111#define wctype_t int
112#endif
113
114#undef WEOF
115#define WEOF ((wint_t)-1)
116
117#ifndef _SCHILY_UTYPES_H
118#include <schily/utypes.h> /* For TYPE_MAXVAL() */
119#endif
120
121#undef WCHAR_MAX
122#define WCHAR_MAX TYPE_MAXVAL(wchar_t)
123#undef WCHAR_MIN
124#define WCHAR_MIN TYPE_MINVAL(wchar_t)
125
126#undef WINT_MAX
127#define WINT_MAX TYPE_MAXVAL(wint_t)
128#undef WINT_MIN
129#define WINT_MIN TYPE_MINVAL(wint_t)
130
131#undef WCTYPE_MAX
132#define WCTYPE_MAX TYPE_MAXVAL(wctype_t)
133#undef WCTYPE_MIN
134#define WCTYPE_MIN TYPE_MINVAL(wctype_t)
135
136#undef SIZEOF_WCHAR_T
137#define SIZEOF_WCHAR_T SIZEOF_CHAR
138
139#undef MB_CUR_MAX
140#define MB_CUR_MAX 1
141#undef MB_LEN_MAX
142#define MB_LEN_MAX 1
143
144/*
145 * The mbtowc() for the non-multibyte case could be as simple as
146 *
147 * #define mbtowc(wp, cp, len) (*(wp) = *(cp), 1)
148 *
149 * but Mac OS X forces us to do many mbtowc(NULL, NULL, 0) calls in order
150 * to reset the internal state. On other platforms that do not support
151 * wide chars, NULL may be defined as (void *)0, so we need to check
152 * for "wp" != NULL and to cast "wp" and "cp" to their expected types.
153 */
154#undef mbtowc
155#define mbtowc(wp, cp, len) ((void)((wp) ? \
156 *(wchar_t *)(wp) = *(char *)(cp) : 1), 1)
157#undef mbrtowc
158#define mbrtowc(wp, cp, len, sp) ((void)((wp) ? \
159 *(wchar_t *)(wp) = *(char *)(cp) : 1), 1)
160#undef wctomb
161#define wctomb(cp, wc) (*(cp) = wc, 1)
162#undef wcrtomb
163#define wcrtomb(cp, wc, sp) (*(cp) = wc, 1)
164
165#undef mbsinit
166#define mbsinit(sp) ((int)((sp) == 0))
167
168#undef wcwidth
169#define wcwidth(wc) (1)
170
171#else /* USE_WCHAR */
172
173#ifndef HAVE_WCWIDTH
174#undef wcwidth
175#define wcwidth(wc) (1)
176#endif
177
178#endif /* USE_WCHAR */
179
180#endif /* _SCHILY_WCHAR_H */