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181 lines
3.9 KiB
C
181 lines
3.9 KiB
C
/* @(#)wchar.h 1.21 11/07/19 Copyright 2007-2011 J. Schilling */
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/*
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* Abstraction from wchar.h
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*
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* Copyright (c) 2007-2011 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#ifndef _SCHILY_WCHAR_H
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#define _SCHILY_WCHAR_H
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#ifndef _SCHILY_MCONFIG_H
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#include <schily/mconfig.h>
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#endif
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#ifndef _SCHILY_STDLIB_H
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#include <schily/stdlib.h> /* for MB_CUR_MAX, mbtowc()/wctomb() */
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#endif
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#ifndef _SCHILY_TYPES_H
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#include <schily/types.h>
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#endif
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#ifdef HAVE_STDDEF_H
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#ifndef _INCL_STDDEF_H
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#include <stddef.h> /* Needed for e.g. size_t (POSIX) */
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#define _INCL_STDDEF_H
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#endif
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#endif
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#ifndef _SCHILY_STDIO_H
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#include <schily/stdio.h> /* Needed for e.g. FILE (POSIX) */
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#endif
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#ifndef _SCHILY_VARARGS_H
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#include <schily/varargs.h> /* Needed for e.g. va_list (POSIX) */
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#endif
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#if !defined(HAVE_MBTOWC) || !defined(HAVE_WCTOMB)
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#if defined(HAVE_MBRTOWC) && defined(HAVE_WCRTOMB)
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# define mbtowc(wp, cp, len) mbrtowc(wp, cp, len, (mbstate_t *)0)
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# define wctomb(cp, wc) wcrtomb(cp, wc, (mbstate_t *)0)
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#else
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# define NO_WCHAR
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#endif
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#endif
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#ifdef HAVE_WCHAR_H
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#ifndef _INCL_WCHAR_H
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#include <wchar.h>
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#define _INCL_WCHAR_H
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#endif
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#ifndef HAVE_MBSINIT
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#define mbsinit(sp) ((int)((sp) == 0))
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#endif
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#ifndef HAVE_MBRTOWC
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#define mbrtowc(wp, cp, len, sp) mbtowc(wp, cp, len)
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#endif
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#ifndef HAVE_WCRTOMB
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#define wcrtomb(cp, wc, sp) wctomb(cp, wc)
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#endif
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#ifndef USE_WCHAR
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#define USE_WCHAR
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#endif
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#else /* HAVE_WCHAR_H */
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#undef USE_WCHAR
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#endif /* !HAVE_WCHAR_H */
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#if !defined(HAVE_WCTYPE_H) && !defined(HAVE_ISWPRINT)
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#undef USE_WCHAR
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#undef USE_WCTYPE
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#endif
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#ifdef NO_WCTYPE
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#undef USE_WCHAR
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#undef USE_WCTYPE
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#endif
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#ifdef NO_WCHAR
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#undef USE_WCHAR
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#undef USE_WCTYPE
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#endif
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#ifndef USE_WCHAR
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/*
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* We either don't have wide chars or we don't use them...
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*/
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#undef wchar_t
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#define wchar_t char
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#undef wint_t
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#define wint_t int
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/*
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* We cannot define wctype_t here because of a bug in Linux (missing xctype_t
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* definition in wchar.h
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*/
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#ifdef __never__
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#undef wctype_t
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#define wctype_t int
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#endif
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#undef WEOF
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#define WEOF ((wint_t)-1)
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#ifndef _SCHILY_UTYPES_H
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#include <schily/utypes.h> /* For TYPE_MAXVAL() */
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#endif
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#undef WCHAR_MAX
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#define WCHAR_MAX TYPE_MAXVAL(wchar_t)
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#undef WCHAR_MIN
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#define WCHAR_MIN TYPE_MINVAL(wchar_t)
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#undef WINT_MAX
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#define WINT_MAX TYPE_MAXVAL(wint_t)
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#undef WINT_MIN
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#define WINT_MIN TYPE_MINVAL(wint_t)
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#undef WCTYPE_MAX
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#define WCTYPE_MAX TYPE_MAXVAL(wctype_t)
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#undef WCTYPE_MIN
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#define WCTYPE_MIN TYPE_MINVAL(wctype_t)
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#undef SIZEOF_WCHAR_T
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#define SIZEOF_WCHAR_T SIZEOF_CHAR
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#undef MB_CUR_MAX
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#define MB_CUR_MAX 1
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#undef MB_LEN_MAX
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#define MB_LEN_MAX 1
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/*
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* The mbtowc() for the non-multibyte case could be as simple as
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*
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* #define mbtowc(wp, cp, len) (*(wp) = *(cp), 1)
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*
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* but Mac OS X forces us to do many mbtowc(NULL, NULL, 0) calls in order
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* to reset the internal state. On other platforms that do not support
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* wide chars, NULL may be defined as (void *)0, so we need to check
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* for "wp" != NULL and to cast "wp" and "cp" to their expected types.
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*/
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#undef mbtowc
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#define mbtowc(wp, cp, len) ((void)((wp) ? \
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*(wchar_t *)(wp) = *(char *)(cp) : 1), 1)
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#undef mbrtowc
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#define mbrtowc(wp, cp, len, sp) ((void)((wp) ? \
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*(wchar_t *)(wp) = *(char *)(cp) : 1), 1)
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#undef wctomb
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#define wctomb(cp, wc) (*(cp) = wc, 1)
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#undef wcrtomb
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#define wcrtomb(cp, wc, sp) (*(cp) = wc, 1)
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#undef mbsinit
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#define mbsinit(sp) ((int)((sp) == 0))
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#undef wcwidth
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#define wcwidth(wc) (1)
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#else /* USE_WCHAR */
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#ifndef HAVE_WCWIDTH
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#undef wcwidth
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#define wcwidth(wc) (1)
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#endif
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#endif /* USE_WCHAR */
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#endif /* _SCHILY_WCHAR_H */
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