usr/src/lib/libxcurses2/h/m_ord.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) 1996-1998 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 /*
  30  * m_ord.h
  31  *
  32  * Copyright 1986, 1992 by Mortice Kern Systems Inc.  All rights reserved.
  33  *
  34  * $Header: /rd/h/rcs/m_ord.h 1.15 1994/05/29 16:17:02 mark Exp $
  35  */
  36
  37 #ifndef __M_M_ORD_H__
  38 #define __M_M_ORD_H__
  39
  40 #ifndef UCHAR_MAX
  41 #include <limits.h>
  42 #endif
  43
  44 /*
  45  * Used with CURSES in order to decern whether or not 'x' is a byte
  46  * or a KEY_xxxx macro, which are defined to be values greater than
  47  * UCHAR_MAX.
  48  */
  49 #define m_ischarset(x)  ((unsigned)(x) <= UCHAR_MAX)
  50
  51 /* ASCII based macros */
  52 /*
  53  * m_ord(c) : convert alpha character(case insensitive) to an an ordinal value.
  54  *            if c is an alphabetic character (A-Z,a-z), this returns
  55  *            a number between 1 and 26
  56  * m_chr(i) : convert an ordinal value to its corresponding alpha character
  57  *            using the reverse mapping as m_ord().
  58  *            if i is a number between 1 and 26 it returns the corresponding
  59  *            alphabetic character A to Z
  60  */
  61 #include <ctype.h>
  62
  63 #define m_ord(c) \
  64         ((m_ischarset(c) && ('A' <= toupper(c) && toupper(c) <= 'Z')) ? \
  65         (toupper(c) - '@') : -1)
  66 #define m_chr(c)        ((1 <= c && c <= 26) ? (c + '@') : -1)
  67
  68 #endif /* __M_M_ORD_H__ */