usr/src/lib/libxcurses/h/m_invari.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 1996, by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 /*
  30  * Copyright 1993 by Mortice Kern Systems Inc.  All rights reserved.
  31  *
  32  * $Header: /rd/h/rcs/m_invari.h 1.12 1994/07/06 17:41:39 miked Exp $
  33  */
  34
  35 /*
  36  * m_invari.h:
  37  *    Configuration and definitions for support of on systems (e.g EBCDIC)
  38  *    where the POSIX.2 portable characters are not invariant
  39  */
  40
  41 #ifndef __M_M_INVARI_H__
  42 #define __M_M_INVARI_H__
  43
  44 /*
  45  * Are all characters in the portable character set invariant across
  46  * all locales?  The results, for posix, if not, are undefined.
  47  * For systems that want to try to deal with this, M_VARIANTS is set.
  48  */
  49 #ifdef  M_VARIANTS
  50
  51 extern char     __m_invariant[];
  52 extern char     __m_unvariant[];
  53
  54 /*
  55  * The M_INVARIANTINIT macro must be called to initialize: it returns -1
  56  * on memory allocation error.  It may be called multiple times, but has
  57  * no effect after the first call.  To reinitialize the variant <-->
  58  * invariant tables after a new setlocale(), use M_INVARIANTREINIT().
  59  * On error, m_error will have been invoked with an appropriate message.
  60  */
  61 #define M_INVARIANTINIT()       m_invariantinit()
  62 extern void     m_invariantinit(void);
  63 #define M_INVARIANTREINIT()     __m_setinvariant()
  64 extern void     __m_setinvariant(void);
  65
  66 /*
  67  * Assume wide characters are always ok.
  68  * Otherwise, always indirect thru the narrow un/invariant table.
  69  * INVARIANT takes the character in the current locale, and produces an
  70  * invariant value, equal to that the C compiler would have compiled.
  71  * UNVARIANT is the inverse; it takes what the C compiler would have
  72  * compiled, and returns the value in the current locale.
  73  */
  74 #define M_INVARIANT(c)  (wctob(c) == EOF ? (c) : __m_invariant[c])
  75 #define M_UNVARIANT(c)  (wctob(c) == EOF ? (c) : __m_unvariant[c])
  76 #define M_UNVARIANTSTR(s)       m_unvariantstr(s)
  77 char *m_unvariantstr(char const *);
  78 #define M_WUNVARIANTSTR(ws)     m_wunvariantstr(ws)
  79 wchar_t *m_wunvariantstr(wchar_t const *);
  80
  81 #else   /* M_VARIANTS */
  82
  83 /* Normal system */
  84 #define M_INVARIANTINIT()       /* NULL */
  85 #define M_INVARIANTREINIT()     /* NULL */
  86 #define M_INVARIANT(c)          (c)
  87 #define M_UNVARIANT(c)          (c)
  88 #define M_UNVARIANTSTR(s)       (s)
  89 #define M_WUNVARIANTSTR(ws)     (ws)
  90
  91 #endif  /* M_VARIANTS */
  92
  93 #endif /*__M_M_INVARI_H__*/
  94
  95
  96