xref: /freebsd/contrib/ncurses/menu/mf_common.h (revision 43c7dd6b597947c27cab4ebc5a67a8a3f5b7c58d)
1 /****************************************************************************
2  * Copyright 2020 Thomas E. Dickey                                          *
3  * Copyright 1998-2005,2012 Free Software Foundation, Inc.                  *
4  *                                                                          *
5  * Permission is hereby granted, free of charge, to any person obtaining a  *
6  * copy of this software and associated documentation files (the            *
7  * "Software"), to deal in the Software without restriction, including      *
8  * without limitation the rights to use, copy, modify, merge, publish,      *
9  * distribute, distribute with modifications, sublicense, and/or sell       *
10  * copies of the Software, and to permit persons to whom the Software is    *
11  * furnished to do so, subject to the following conditions:                 *
12  *                                                                          *
13  * The above copyright notice and this permission notice shall be included  *
14  * in all copies or substantial portions of the Software.                   *
15  *                                                                          *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
19  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
22  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
23  *                                                                          *
24  * Except as contained in this notice, the name(s) of the above copyright   *
25  * holders shall not be used in advertising or otherwise to promote the     *
26  * sale, use or other dealings in this Software without prior written       *
27  * authorization.                                                           *
28  ****************************************************************************/
29 
30 /****************************************************************************
31  *   Author:  Juergen Pfeifer, 1995,1997                                    *
32  ****************************************************************************/
33 
34 /* $Id: mf_common.h,v 0.25 2020/02/02 23:34:34 tom Exp $ */
35 
36 /* Common internal header for menu and form library */
37 
38 #ifndef MF_COMMON_H_incl
39 #define MF_COMMON_H_incl 1
40 
41 #include <ncurses_cfg.h>
42 #include <curses.h>
43 
44 #include <stdlib.h>
45 #include <sys/types.h>
46 #include <assert.h>
47 #include <string.h>
48 #include <ctype.h>
49 #include <errno.h>
50 
51 #if DECL_ERRNO
52 extern int errno;
53 #endif
54 
55 /* in case of debug version we ignore the suppression of assertions */
56 #ifdef TRACE
57 #  ifdef NDEBUG
58 #    undef NDEBUG
59 #  endif
60 #endif
61 
62 #include <nc_alloc.h>
63 
64 #if USE_RCS_IDS
65 #define MODULE_ID(id) static const char Ident[] = id;
66 #else
67 #define MODULE_ID(id)		/*nothing */
68 #endif
69 
70 /* Maximum regular 8-bit character code */
71 #define MAX_REGULAR_CHARACTER (0xff)
72 
73 #define SET_ERROR(code) (errno=(code))
74 #define GET_ERROR()     (errno)
75 
76 #ifdef TRACE
77 #define RETURN(code)    returnCode( SET_ERROR(code) )
78 #else
79 #define RETURN(code)    return( SET_ERROR(code) )
80 #endif
81 
82 /* The few common values in the status fields for menus and forms */
83 #define _POSTED         (0x01U)	/* menu or form is posted                  */
84 #define _IN_DRIVER      (0x02U)	/* menu or form is processing hook routine */
85 
86 #define SetStatus(target,mask) (target)->status |= (unsigned short) (mask)
87 #define ClrStatus(target,mask) (target)->status = (unsigned short) (target->status & (~mask))
88 
89 /* Call object hook */
90 #define Call_Hook( object, handler ) \
91    if ( (object) != 0 && ((object)->handler) != (void *) 0 )\
92    {\
93 	SetStatus(object, _IN_DRIVER);\
94 	(object)->handler(object);\
95 	ClrStatus(object, _IN_DRIVER);\
96    }
97 
98 #endif /* MF_COMMON_H_incl */
99