xref: /freebsd/contrib/ncurses/menu/mf_common.h (revision 5ca8e32633c4ffbbcd6762e5888b6a4ba0708c6c)
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2  * Copyright 2020 Thomas E. Dickey                                          *
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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