xref: /freebsd/contrib/ncurses/form/frm_opts.c (revision 2008043f386721d58158e37e0d7e50df8095942d)
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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 #include "form.priv.h"
35 
36 MODULE_ID("$Id: frm_opts.c,v 1.20 2020/12/12 00:37:00 tom Exp $")
37 
38 /*---------------------------------------------------------------------------
39 |   Facility      :  libnform
40 |   Function      :  int set_form_opts(FORM *form, Form_Options opts)
41 |
42 |   Description   :  Turns on the named options and turns off all the
43 |                    remaining options for that form.
44 |
45 |   Return Values :  E_OK              - success
46 |                    E_BAD_ARGUMENT    - invalid options
47 +--------------------------------------------------------------------------*/
48 FORM_EXPORT(int)
49 set_form_opts(FORM *form, Form_Options opts)
50 {
51   T((T_CALLED("set_form_opts(%p,%d)"), (void *)form, opts));
52 
53   opts &= (Form_Options)ALL_FORM_OPTS;
54   if ((unsigned)opts & ~ALL_FORM_OPTS)
55     RETURN(E_BAD_ARGUMENT);
56   else
57     {
58       Normalize_Form(form)->opts = opts;
59       RETURN(E_OK);
60     }
61 }
62 
63 /*---------------------------------------------------------------------------
64 |   Facility      :  libnform
65 |   Function      :  Form_Options form_opts(const FORM *)
66 |
67 |   Description   :  Retrieves the current form options.
68 |
69 |   Return Values :  The option flags.
70 +--------------------------------------------------------------------------*/
71 FORM_EXPORT(Form_Options)
72 form_opts(const FORM *form)
73 {
74   T((T_CALLED("form_opts(%p)"), (const void *)form));
75   returnCode((Form_Options)((unsigned)Normalize_Form(form)->opts & ALL_FORM_OPTS));
76 }
77 
78 /*---------------------------------------------------------------------------
79 |   Facility      :  libnform
80 |   Function      :  int form_opts_on(FORM *form, Form_Options opts)
81 |
82 |   Description   :  Turns on the named options; no other options are
83 |                    changed.
84 |
85 |   Return Values :  E_OK            - success
86 |                    E_BAD_ARGUMENT  - invalid options
87 +--------------------------------------------------------------------------*/
88 FORM_EXPORT(int)
89 form_opts_on(FORM *form, Form_Options opts)
90 {
91   T((T_CALLED("form_opts_on(%p,%d)"), (void *)form, opts));
92 
93   opts &= (Form_Options)ALL_FORM_OPTS;
94   if ((unsigned)opts & ~ALL_FORM_OPTS)
95     RETURN(E_BAD_ARGUMENT);
96   else
97     {
98       Normalize_Form(form)->opts |= opts;
99       RETURN(E_OK);
100     }
101 }
102 
103 /*---------------------------------------------------------------------------
104 |   Facility      :  libnform
105 |   Function      :  int form_opts_off(FORM *form, Form_Options opts)
106 |
107 |   Description   :  Turns off the named options; no other options are
108 |                    changed.
109 |
110 |   Return Values :  E_OK            - success
111 |                    E_BAD_ARGUMENT  - invalid options
112 +--------------------------------------------------------------------------*/
113 FORM_EXPORT(int)
114 form_opts_off(FORM *form, Form_Options opts)
115 {
116   T((T_CALLED("form_opts_off(%p,%d)"), (void *)form, opts));
117 
118   opts &= (Form_Options)ALL_FORM_OPTS;
119   if ((unsigned)opts & ~ALL_FORM_OPTS)
120     RETURN(E_BAD_ARGUMENT);
121   else
122     {
123       Normalize_Form(form)->opts &= ~opts;
124       RETURN(E_OK);
125     }
126 }
127 
128 /* frm_opts.c ends here */
129