1 /****************************************************************************
2 ,* Copyright 2020-2021,2022 Thomas E. Dickey *
3 * Copyright 1998-2016,2017 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. *
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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: Thomas E. Dickey <dickey@clark.net> 1997 *
32 ****************************************************************************/
33 /*
34 * Module that "owns" the 'cur_term' variable:
35 *
36 * TERMINAL *set_curterm(TERMINAL *)
37 * int del_curterm(TERMINAL *)
38 */
39
40 #include <curses.priv.h>
41 #include <termcap.h> /* ospeed */
42 #include <tic.h> /* VALID_STRING */
43
44 MODULE_ID("$Id: lib_cur_term.c,v 1.49 2022/05/28 17:56:55 tom Exp $")
45
46 #undef CUR
47 #define CUR TerminalType(termp).
48
49 #if USE_REENTRANT
50
NCURSES_EXPORT(TERMINAL *)51 NCURSES_EXPORT(TERMINAL *)
52 NCURSES_SP_NAME(_nc_get_cur_term) (NCURSES_SP_DCL0)
53 {
54 return ((0 != TerminalOf(SP_PARM)) ? TerminalOf(SP_PARM) : CurTerm);
55 }
56
57 #if NCURSES_SP_FUNCS
58
59 NCURSES_EXPORT(TERMINAL *)
_nc_get_cur_term(void)60 _nc_get_cur_term(void)
61 {
62 return NCURSES_SP_NAME(_nc_get_cur_term) (CURRENT_SCREEN);
63 }
64 #endif
65
66 NCURSES_EXPORT(TERMINAL *)
NCURSES_PUBLIC_VAR(cur_term)67 NCURSES_PUBLIC_VAR(cur_term) (void)
68 {
69 #if NCURSES_SP_FUNCS
70 return NCURSES_SP_NAME(_nc_get_cur_term) (CURRENT_SCREEN);
71 #else
72 return NCURSES_SP_NAME(_nc_get_cur_term) (NCURSES_SP_ARG);
73 #endif
74 }
75
76 #else
77 NCURSES_EXPORT_VAR(TERMINAL *) cur_term = 0;
78 #endif
79
80 NCURSES_EXPORT(TERMINAL *)
NCURSES_SP_NAME(set_curterm)81 NCURSES_SP_NAME(set_curterm) (NCURSES_SP_DCLx TERMINAL *termp)
82 {
83 TERMINAL *oldterm;
84
85 T((T_CALLED("set_curterm(%p)"), (void *) termp));
86
87 _nc_lock_global(curses);
88 oldterm = cur_term;
89 if (SP_PARM)
90 SP_PARM->_term = termp;
91 #if USE_REENTRANT
92 CurTerm = termp;
93 #else
94 cur_term = termp;
95 #endif
96 if (termp != 0) {
97 #ifdef USE_TERM_DRIVER
98 TERMINAL_CONTROL_BLOCK *TCB = (TERMINAL_CONTROL_BLOCK *) termp;
99 ospeed = (NCURSES_OSPEED) _nc_ospeed(termp->_baudrate);
100 if (TCB->drv &&
101 TCB->drv->isTerminfo &&
102 TerminalType(termp).Strings) {
103 PC = (char) (VALID_STRING(pad_char) ? pad_char[0] : 0);
104 }
105 TCB->csp = SP_PARM;
106 #else
107 ospeed = (NCURSES_OSPEED) _nc_ospeed(termp->_baudrate);
108 if (TerminalType(termp).Strings) {
109 PC = (char) (VALID_STRING(pad_char) ? pad_char[0] : 0);
110 }
111 #endif
112 #if !USE_REENTRANT
113 save_ttytype(termp);
114 #endif
115 }
116 _nc_unlock_global(curses);
117
118 T((T_RETURN("%p"), (void *) oldterm));
119 return (oldterm);
120 }
121
122 #if NCURSES_SP_FUNCS
123 NCURSES_EXPORT(TERMINAL *)
set_curterm(TERMINAL * termp)124 set_curterm(TERMINAL *termp)
125 {
126 return NCURSES_SP_NAME(set_curterm) (CURRENT_SCREEN, termp);
127 }
128 #endif
129
130 NCURSES_EXPORT(int)
NCURSES_SP_NAME(del_curterm)131 NCURSES_SP_NAME(del_curterm) (NCURSES_SP_DCLx TERMINAL *termp)
132 {
133 int rc = ERR;
134
135 T((T_CALLED("del_curterm(%p, %p)"), (void *) SP_PARM, (void *) termp));
136
137 if (termp != 0) {
138 #ifdef USE_TERM_DRIVER
139 TERMINAL_CONTROL_BLOCK *TCB = (TERMINAL_CONTROL_BLOCK *) termp;
140 #endif
141 TERMINAL *cur = (
142 #if USE_REENTRANT
143 NCURSES_SP_NAME(_nc_get_cur_term) (NCURSES_SP_ARG)
144 #else
145 cur_term
146 #endif
147 );
148
149 #if NCURSES_EXT_NUMBERS
150 #if NCURSES_EXT_COLORS
151 _nc_free_termtype1(&termp->type);
152 #else
153 _nc_free_termtype2(&termp->type);
154 #endif
155 #endif
156 _nc_free_termtype2(&TerminalType(termp));
157 if (termp == cur)
158 NCURSES_SP_NAME(set_curterm) (NCURSES_SP_ARGx 0);
159
160 FreeIfNeeded(termp->_termname);
161 #if USE_HOME_TERMINFO
162 if (_nc_globals.home_terminfo != 0) {
163 FreeAndNull(_nc_globals.home_terminfo);
164 }
165 #endif
166 #ifdef USE_TERM_DRIVER
167 if (TCB->drv)
168 TCB->drv->td_release(TCB);
169 #endif
170 #if NO_LEAKS
171 /* discard memory used in tgetent's cache for this terminal */
172 _nc_tgetent_leak(termp);
173 #endif
174 if (--_nc_globals.terminal_count == 0) {
175 _nc_free_tparm(termp);
176 }
177
178 free(termp->tparm_state.fmt_buff);
179 free(termp->tparm_state.out_buff);
180 free(termp);
181
182 rc = OK;
183 }
184
185 returnCode(rc);
186 }
187
188 #if NCURSES_SP_FUNCS
189 NCURSES_EXPORT(int)
del_curterm(TERMINAL * termp)190 del_curterm(TERMINAL *termp)
191 {
192 int rc;
193
194 _nc_lock_global(curses);
195 rc = NCURSES_SP_NAME(del_curterm) (CURRENT_SCREEN, termp);
196 _nc_unlock_global(curses);
197
198 return (rc);
199 }
200 #endif
201