m_invari.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1996, by Sun Microsystems, Inc.
* All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Copyright 1993 by Mortice Kern Systems Inc. All rights reserved.
*
* $Header: /rd/h/rcs/m_invari.h 1.12 1994/07/06 17:41:39 miked Exp $
*/
/*
* m_invari.h:
* Configuration and definitions for support of on systems (e.g EBCDIC)
* where the POSIX.2 portable characters are not invariant
*/
#ifndef __M_M_INVARI_H__
#define __M_M_INVARI_H__
/*
* Are all characters in the portable character set invariant across
* all locales? The results, for posix, if not, are undefined.
* For systems that want to try to deal with this, M_VARIANTS is set.
*/
#ifdef M_VARIANTS
extern char __m_invariant[];
extern char __m_unvariant[];
/*
* The M_INVARIANTINIT macro must be called to initialize: it returns -1
* on memory allocation error. It may be called multiple times, but has
* no effect after the first call. To reinitialize the variant <-->
* invariant tables after a new setlocale(), use M_INVARIANTREINIT().
* On error, m_error will have been invoked with an appropriate message.
*/
#define M_INVARIANTINIT() m_invariantinit()
extern void m_invariantinit(void);
#define M_INVARIANTREINIT() __m_setinvariant()
extern void __m_setinvariant(void);
/*
* Assume wide characters are always ok.
* INVARIANT takes the character in the current locale, and produces an
* invariant value, equal to that the C compiler would have compiled.
* UNVARIANT is the inverse; it takes what the C compiler would have
* compiled, and returns the value in the current locale.
*/
#define M_UNVARIANTSTR(s) m_unvariantstr(s)
char *m_unvariantstr(char const *);
#else /* M_VARIANTS */
/* Normal system */
#define M_INVARIANTINIT() /* NULL */
#define M_INVARIANTREINIT() /* NULL */
#define M_INVARIANT(c) (c)
#define M_UNVARIANT(c) (c)
#define M_UNVARIANTSTR(s) (s)
#endif /* M_VARIANTS */
#endif /*__M_M_INVARI_H__*/