1 /**************************************************************************** 2 * Copyright (c) 1998-2009,2011 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29 /**************************************************************************** 30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 31 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 32 * and: Thomas E. Dickey 1996 on * 33 * and: Juergen Pfeifer 2009 * 34 ****************************************************************************/ 35 36 #include <curses.priv.h> 37 38 #ifndef CUR 39 #define CUR SP_TERMTYPE 40 #endif 41 42 MODULE_ID("$Id: lib_screen.c,v 1.41 2011/10/22 15:03:11 tom Exp $") 43 44 #define MAX_SIZE 0x3fff /* 16k is big enough for a window or pad */ 45 46 NCURSES_EXPORT(WINDOW *) 47 NCURSES_SP_NAME(getwin) (NCURSES_SP_DCLx FILE *filep) 48 { 49 WINDOW tmp, *nwin; 50 int n; 51 52 T((T_CALLED("getwin(%p)"), (void *) filep)); 53 54 if (filep == 0) { 55 returnWin(0); 56 } 57 clearerr(filep); 58 if (fread(&tmp, (size_t) 1, sizeof(WINDOW), filep) < sizeof(WINDOW) 59 || ferror(filep) 60 || tmp._maxy == 0 61 || tmp._maxy > MAX_SIZE 62 || tmp._maxx == 0 63 || tmp._maxx > MAX_SIZE) { 64 returnWin(0); 65 } 66 67 if (tmp._flags & _ISPAD) { 68 nwin = NCURSES_SP_NAME(newpad) (NCURSES_SP_ARGx 69 tmp._maxy + 1, 70 tmp._maxx + 1); 71 } else { 72 nwin = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx 73 tmp._maxy + 1, 74 tmp._maxx + 1, 0, 0); 75 } 76 77 /* 78 * We deliberately do not restore the _parx, _pary, or _parent 79 * fields, because the window hierarchy within which they 80 * made sense is probably gone. 81 */ 82 if (nwin != 0) { 83 size_t linesize = sizeof(NCURSES_CH_T) * (size_t) (tmp._maxx + 1); 84 85 nwin->_curx = tmp._curx; 86 nwin->_cury = tmp._cury; 87 nwin->_maxy = tmp._maxy; 88 nwin->_maxx = tmp._maxx; 89 nwin->_begy = tmp._begy; 90 nwin->_begx = tmp._begx; 91 nwin->_yoffset = tmp._yoffset; 92 nwin->_flags = tmp._flags & ~(_SUBWIN); 93 94 WINDOW_ATTRS(nwin) = WINDOW_ATTRS(&tmp); 95 nwin->_nc_bkgd = tmp._nc_bkgd; 96 97 nwin->_notimeout = tmp._notimeout; 98 nwin->_clear = tmp._clear; 99 nwin->_leaveok = tmp._leaveok; 100 nwin->_idlok = tmp._idlok; 101 nwin->_idcok = tmp._idcok; 102 nwin->_immed = tmp._immed; 103 nwin->_scroll = tmp._scroll; 104 nwin->_sync = tmp._sync; 105 nwin->_use_keypad = tmp._use_keypad; 106 nwin->_delay = tmp._delay; 107 108 nwin->_regtop = tmp._regtop; 109 nwin->_regbottom = tmp._regbottom; 110 111 if (tmp._flags & _ISPAD) 112 nwin->_pad = tmp._pad; 113 114 for (n = 0; n <= nwin->_maxy; n++) { 115 clearerr(filep); 116 if (fread(nwin->_line[n].text, (size_t) 1, linesize, filep) < linesize 117 || ferror(filep)) { 118 delwin(nwin); 119 returnWin(0); 120 } 121 } 122 touchwin(nwin); 123 } 124 returnWin(nwin); 125 } 126 127 #if NCURSES_SP_FUNCS 128 NCURSES_EXPORT(WINDOW *) 129 getwin(FILE *filep) 130 { 131 return NCURSES_SP_NAME(getwin) (CURRENT_SCREEN, filep); 132 } 133 #endif 134 135 NCURSES_EXPORT(int) 136 putwin(WINDOW *win, FILE *filep) 137 { 138 int code = ERR; 139 int n; 140 141 T((T_CALLED("putwin(%p,%p)"), (void *) win, (void *) filep)); 142 143 if (win != 0) { 144 size_t len = (size_t) (win->_maxx + 1); 145 146 clearerr(filep); 147 if (fwrite(win, sizeof(WINDOW), (size_t) 1, filep) != 1 148 || ferror(filep)) 149 returnCode(code); 150 151 for (n = 0; n <= win->_maxy; n++) { 152 if (fwrite(win->_line[n].text, 153 sizeof(NCURSES_CH_T), len, filep) != len 154 || ferror(filep)) { 155 returnCode(code); 156 } 157 } 158 code = OK; 159 } 160 returnCode(code); 161 } 162 163 NCURSES_EXPORT(int) 164 NCURSES_SP_NAME(scr_restore) (NCURSES_SP_DCLx const char *file) 165 { 166 FILE *fp = 0; 167 168 T((T_CALLED("scr_restore(%p,%s)"), (void *) SP_PARM, _nc_visbuf(file))); 169 170 if (_nc_access(file, R_OK) < 0 171 || (fp = fopen(file, "rb")) == 0) { 172 returnCode(ERR); 173 } else { 174 delwin(NewScreen(SP_PARM)); 175 NewScreen(SP_PARM) = getwin(fp); 176 #if !USE_REENTRANT 177 newscr = NewScreen(SP_PARM); 178 #endif 179 (void) fclose(fp); 180 returnCode(OK); 181 } 182 } 183 184 #if NCURSES_SP_FUNCS 185 NCURSES_EXPORT(int) 186 scr_restore(const char *file) 187 { 188 return NCURSES_SP_NAME(scr_restore) (CURRENT_SCREEN, file); 189 } 190 #endif 191 192 NCURSES_EXPORT(int) 193 scr_dump(const char *file) 194 { 195 int result; 196 FILE *fp = 0; 197 198 T((T_CALLED("scr_dump(%s)"), _nc_visbuf(file))); 199 200 if (_nc_access(file, W_OK) < 0 201 || (fp = fopen(file, "wb")) == 0) { 202 result = ERR; 203 } else { 204 (void) putwin(newscr, fp); 205 (void) fclose(fp); 206 result = OK; 207 } 208 returnCode(result); 209 } 210 211 NCURSES_EXPORT(int) 212 NCURSES_SP_NAME(scr_init) (NCURSES_SP_DCLx const char *file) 213 { 214 FILE *fp = 0; 215 int code = ERR; 216 217 T((T_CALLED("scr_init(%p,%s)"), (void *) SP_PARM, _nc_visbuf(file))); 218 219 if (SP_PARM != 0 && 220 #ifdef USE_TERM_DRIVER 221 InfoOf(SP_PARM).caninit 222 #else 223 !(exit_ca_mode && non_rev_rmcup) 224 #endif 225 ) { 226 if (_nc_access(file, R_OK) >= 0 227 && (fp = fopen(file, "rb")) != 0) { 228 delwin(CurScreen(SP_PARM)); 229 CurScreen(SP_PARM) = getwin(fp); 230 #if !USE_REENTRANT 231 curscr = CurScreen(SP_PARM); 232 #endif 233 (void) fclose(fp); 234 code = OK; 235 } 236 } 237 returnCode(code); 238 } 239 240 #if NCURSES_SP_FUNCS 241 NCURSES_EXPORT(int) 242 scr_init(const char *file) 243 { 244 return NCURSES_SP_NAME(scr_init) (CURRENT_SCREEN, file); 245 } 246 #endif 247 248 NCURSES_EXPORT(int) 249 NCURSES_SP_NAME(scr_set) (NCURSES_SP_DCLx const char *file) 250 { 251 T((T_CALLED("scr_set(%p,%s)"), (void *) SP_PARM, _nc_visbuf(file))); 252 253 if (NCURSES_SP_NAME(scr_init) (NCURSES_SP_ARGx file) == ERR) { 254 returnCode(ERR); 255 } else { 256 delwin(NewScreen(SP_PARM)); 257 NewScreen(SP_PARM) = dupwin(curscr); 258 #if !USE_REENTRANT 259 newscr = NewScreen(SP_PARM); 260 #endif 261 returnCode(OK); 262 } 263 } 264 265 #if NCURSES_SP_FUNCS 266 NCURSES_EXPORT(int) 267 scr_set(const char *file) 268 { 269 return NCURSES_SP_NAME(scr_set) (CURRENT_SCREEN, file); 270 } 271 #endif 272