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 43 MODULE_ID("$Id: lib_cur_term.c,v 1.42 2020/02/02 23:34:34 tom Exp $") 44 45 #undef CUR 46 #define CUR TerminalType(termp). 47 48 #if USE_REENTRANT 49 50 NCURSES_EXPORT(TERMINAL *) 51 NCURSES_SP_NAME(_nc_get_cur_term) (NCURSES_SP_DCL0) 52 { 53 return ((0 != TerminalOf(SP_PARM)) ? TerminalOf(SP_PARM) : CurTerm); 54 } 55 56 #if NCURSES_SP_FUNCS 57 58 NCURSES_EXPORT(TERMINAL *) 59 _nc_get_cur_term(void) 60 { 61 return NCURSES_SP_NAME(_nc_get_cur_term) (CURRENT_SCREEN); 62 } 63 #endif 64 65 NCURSES_EXPORT(TERMINAL *) 66 NCURSES_PUBLIC_VAR(cur_term) (void) 67 { 68 #if NCURSES_SP_FUNCS 69 return NCURSES_SP_NAME(_nc_get_cur_term) (CURRENT_SCREEN); 70 #else 71 return NCURSES_SP_NAME(_nc_get_cur_term) (NCURSES_SP_ARG); 72 #endif 73 } 74 75 #else 76 NCURSES_EXPORT_VAR(TERMINAL *) cur_term = 0; 77 #endif 78 79 NCURSES_EXPORT(TERMINAL *) 80 NCURSES_SP_NAME(set_curterm) (NCURSES_SP_DCLx TERMINAL *termp) 81 { 82 TERMINAL *oldterm; 83 84 T((T_CALLED("set_curterm(%p)"), (void *) termp)); 85 86 _nc_lock_global(curses); 87 oldterm = cur_term; 88 if (SP_PARM) 89 SP_PARM->_term = termp; 90 #if USE_REENTRANT 91 CurTerm = termp; 92 #else 93 cur_term = termp; 94 #endif 95 if (termp != 0) { 96 #ifdef USE_TERM_DRIVER 97 TERMINAL_CONTROL_BLOCK *TCB = (TERMINAL_CONTROL_BLOCK *) termp; 98 ospeed = (NCURSES_OSPEED) _nc_ospeed(termp->_baudrate); 99 if (TCB->drv && 100 TCB->drv->isTerminfo && 101 TerminalType(termp).Strings) { 102 PC = (char) ((pad_char != NULL) ? pad_char[0] : 0); 103 } 104 TCB->csp = SP_PARM; 105 #else 106 ospeed = (NCURSES_OSPEED) _nc_ospeed(termp->_baudrate); 107 if (TerminalType(termp).Strings) { 108 PC = (char) ((pad_char != NULL) ? pad_char[0] : 0); 109 } 110 #endif 111 #if !USE_REENTRANT 112 save_ttytype(termp); 113 #endif 114 } 115 _nc_unlock_global(curses); 116 117 T((T_RETURN("%p"), (void *) oldterm)); 118 return (oldterm); 119 } 120 121 #if NCURSES_SP_FUNCS 122 NCURSES_EXPORT(TERMINAL *) 123 set_curterm(TERMINAL *termp) 124 { 125 return NCURSES_SP_NAME(set_curterm) (CURRENT_SCREEN, termp); 126 } 127 #endif 128 129 NCURSES_EXPORT(int) 130 NCURSES_SP_NAME(del_curterm) (NCURSES_SP_DCLx TERMINAL *termp) 131 { 132 int rc = ERR; 133 134 T((T_CALLED("del_curterm(%p, %p)"), (void *) SP_PARM, (void *) termp)); 135 136 if (termp != 0) { 137 #ifdef USE_TERM_DRIVER 138 TERMINAL_CONTROL_BLOCK *TCB = (TERMINAL_CONTROL_BLOCK *) termp; 139 #endif 140 TERMINAL *cur = ( 141 #if USE_REENTRANT 142 NCURSES_SP_NAME(_nc_get_cur_term) (NCURSES_SP_ARG) 143 #else 144 cur_term 145 #endif 146 ); 147 148 #if NCURSES_EXT_NUMBERS 149 _nc_free_termtype(&termp->type); 150 #endif 151 _nc_free_termtype2(&TerminalType(termp)); 152 if (termp == cur) 153 NCURSES_SP_NAME(set_curterm) (NCURSES_SP_ARGx 0); 154 155 FreeIfNeeded(termp->_termname); 156 #if USE_HOME_TERMINFO 157 if (_nc_globals.home_terminfo != 0) { 158 FreeAndNull(_nc_globals.home_terminfo); 159 } 160 #endif 161 #ifdef USE_TERM_DRIVER 162 if (TCB->drv) 163 TCB->drv->td_release(TCB); 164 #endif 165 #if NO_LEAKS 166 /* discard memory used in tgetent's cache for this terminal */ 167 _nc_tgetent_leak(termp); 168 #endif 169 free(termp); 170 171 rc = OK; 172 } 173 returnCode(rc); 174 } 175 176 #if NCURSES_SP_FUNCS 177 NCURSES_EXPORT(int) 178 del_curterm(TERMINAL *termp) 179 { 180 int rc; 181 182 _nc_lock_global(curses); 183 rc = NCURSES_SP_NAME(del_curterm) (CURRENT_SCREEN, termp); 184 _nc_unlock_global(curses); 185 186 return (rc); 187 } 188 #endif 189