1 /**************************************************************************** 2 * Copyright 2020 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. * 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: 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 1.43 2020/10/24 18:54:32 tom Exp $") 45 46 #undef CUR 47 #define CUR TerminalType(termp). 48 49 #if USE_REENTRANT 50 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 *) 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 *) 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 *) 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 *) 124 set_curterm(TERMINAL *termp) 125 { 126 return NCURSES_SP_NAME(set_curterm) (CURRENT_SCREEN, termp); 127 } 128 #endif 129 130 NCURSES_EXPORT(int) 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 _nc_free_termtype(&termp->type); 151 #endif 152 _nc_free_termtype2(&TerminalType(termp)); 153 if (termp == cur) 154 NCURSES_SP_NAME(set_curterm) (NCURSES_SP_ARGx 0); 155 156 FreeIfNeeded(termp->_termname); 157 #if USE_HOME_TERMINFO 158 if (_nc_globals.home_terminfo != 0) { 159 FreeAndNull(_nc_globals.home_terminfo); 160 } 161 #endif 162 #ifdef USE_TERM_DRIVER 163 if (TCB->drv) 164 TCB->drv->td_release(TCB); 165 #endif 166 #if NO_LEAKS 167 /* discard memory used in tgetent's cache for this terminal */ 168 _nc_tgetent_leak(termp); 169 #endif 170 free(termp); 171 172 rc = OK; 173 } 174 returnCode(rc); 175 } 176 177 #if NCURSES_SP_FUNCS 178 NCURSES_EXPORT(int) 179 del_curterm(TERMINAL *termp) 180 { 181 int rc; 182 183 _nc_lock_global(curses); 184 rc = NCURSES_SP_NAME(del_curterm) (CURRENT_SCREEN, termp); 185 _nc_unlock_global(curses); 186 187 return (rc); 188 } 189 #endif 190