1 /* $OpenBSD: lib_data.c,v 1.3 2001/01/22 18:01:52 millert Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 33 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 34 ****************************************************************************/ 35 36 /* 37 ** lib_data.c 38 ** 39 ** Common data that may/may not be allocated, but is referenced globally 40 ** 41 */ 42 43 #include <curses.priv.h> 44 45 MODULE_ID("$From: lib_data.c,v 1.16 2000/12/10 02:55:07 tom Exp $") 46 47 /* 48 * OS/2's native linker complains if we don't initialize public data when 49 * constructing a dll (reported by J.J.G.Ripoll). 50 */ 51 NCURSES_EXPORT_VAR(WINDOW *) 52 stdscr = 0; 53 NCURSES_EXPORT_VAR(WINDOW *) 54 curscr = 0; 55 NCURSES_EXPORT_VAR(WINDOW *) 56 newscr = 0; 57 58 NCURSES_EXPORT_VAR(SCREEN *) _nc_screen_chain = 0; 59 60 /* 61 * The variable 'SP' will be defined as a function on systems that cannot link 62 * data-only modules, since it is used in a lot of places within ncurses and we 63 * cannot guarantee that any application will use any particular function. We 64 * put the WINDOW variables in this module, because it appears that any 65 * application that uses them will also use 'SP'. 66 * 67 * This module intentionally does not reference other ncurses modules, to avoid 68 * module coupling that increases the size of the executable. 69 */ 70 #if BROKEN_LINKER 71 static SCREEN *my_screen; 72 73 NCURSES_EXPORT(SCREEN *) 74 _nc_screen(void) 75 { 76 return my_screen; 77 } 78 79 NCURSES_EXPORT(int) 80 _nc_alloc_screen(void) 81 { 82 return ((my_screen = typeCalloc(SCREEN, 1)) != 0); 83 } 84 85 NCURSES_EXPORT(void) 86 _nc_set_screen(SCREEN * sp) 87 { 88 my_screen = sp; 89 } 90 91 #else 92 NCURSES_EXPORT_VAR(SCREEN *) SP = NULL; /* Some linkers require initialized data... */ 93 #endif 94