1 /* $OpenBSD: lib_screen.c,v 1.1 1999/01/18 19:09:58 millert Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998 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 #include <curses.priv.h> 38 39 #include <sys/stat.h> 40 #include <time.h> 41 #include <term.h> /* exit_ca_mode, non_rev_rmcup */ 42 43 MODULE_ID("$From: lib_screen.c,v 1.14 1999/01/02 22:56:17 tom Exp $") 44 45 static time_t dumptime; 46 47 WINDOW *getwin(FILE *filep) 48 { 49 WINDOW tmp, *nwin; 50 int n; 51 52 T((T_CALLED("getwin(%p)"), filep)); 53 54 (void) fread(&tmp, sizeof(WINDOW), 1, filep); 55 if (ferror(filep)) 56 returnWin(0); 57 58 if ((nwin = newwin(tmp._maxy+1, tmp._maxx+1, 0, 0)) == 0) 59 returnWin(0); 60 61 /* 62 * We deliberately do not restore the _parx, _pary, or _parent 63 * fields, because the window hierarchy within which they 64 * made sense is probably gone. 65 */ 66 nwin->_curx = tmp._curx; 67 nwin->_cury = tmp._cury; 68 nwin->_maxy = tmp._maxy; 69 nwin->_maxx = tmp._maxx; 70 nwin->_begy = tmp._begy; 71 nwin->_begx = tmp._begx; 72 nwin->_yoffset = tmp._yoffset; 73 nwin->_flags = tmp._flags & ~(_SUBWIN|_ISPAD); 74 75 nwin->_attrs = tmp._attrs; 76 nwin->_bkgd = tmp._bkgd; 77 78 nwin->_clear = tmp._clear; 79 nwin->_scroll = tmp._scroll; 80 nwin->_leaveok = tmp._leaveok; 81 nwin->_use_keypad = tmp._use_keypad; 82 nwin->_delay = tmp._delay; 83 nwin->_immed = tmp._immed; 84 nwin->_sync = tmp._sync; 85 86 nwin->_regtop = tmp._regtop; 87 nwin->_regbottom = tmp._regbottom; 88 89 for (n = 0; n < nwin->_maxy + 1; n++) 90 { 91 (void) fread(nwin->_line[n].text, 92 sizeof(chtype), (size_t)(nwin->_maxx + 1), filep); 93 if (ferror(filep)) 94 { 95 delwin(nwin); 96 returnWin(0); 97 } 98 } 99 touchwin(nwin); 100 101 returnWin(nwin); 102 } 103 104 int putwin(WINDOW *win, FILE *filep) 105 { 106 int code = ERR; 107 int n; 108 109 T((T_CALLED("putwin(%p,%p)"), win, filep)); 110 111 if (win) { 112 (void) fwrite(win, sizeof(WINDOW), 1, filep); 113 if (ferror(filep)) 114 returnCode(code); 115 116 for (n = 0; n < win->_maxy + 1; n++) 117 { 118 (void) fwrite(win->_line[n].text, 119 sizeof(chtype), (size_t)(win->_maxx + 1), filep); 120 if (ferror(filep)) 121 returnCode(code); 122 } 123 code = OK; 124 } 125 returnCode(code); 126 } 127 128 int scr_restore(const char *file) 129 { 130 FILE *fp; 131 132 T((T_CALLED("scr_restore(%s)"), _nc_visbuf(file))); 133 134 if (_nc_access(file, R_OK) < 0 135 || (fp = fopen(file, "rb")) == 0) 136 returnCode(ERR); 137 else 138 { 139 delwin(newscr); 140 newscr = getwin(fp); 141 (void) fclose(fp); 142 returnCode(OK); 143 } 144 } 145 146 int scr_dump(const char *file) 147 { 148 FILE *fp; 149 150 T((T_CALLED("scr_dump(%s)"), _nc_visbuf(file))); 151 152 if (_nc_access(file, W_OK) < 0 153 || (fp = fopen(file, "wb")) == 0) 154 returnCode(ERR); 155 else 156 { 157 (void) putwin(newscr, fp); 158 (void) fclose(fp); 159 dumptime = time((time_t *)0); 160 returnCode(OK); 161 } 162 } 163 164 int scr_init(const char *file) 165 { 166 FILE *fp; 167 struct stat stb; 168 169 T((T_CALLED("scr_init(%s)"), _nc_visbuf(file))); 170 171 if (exit_ca_mode && non_rev_rmcup) 172 returnCode(ERR); 173 174 if (_nc_access(file, R_OK) < 0 175 || (fp = fopen(file, "rb")) == 0) 176 returnCode(ERR); 177 else if (fstat(STDOUT_FILENO, &stb) || stb.st_mtime > dumptime) 178 returnCode(ERR); 179 else 180 { 181 delwin(curscr); 182 curscr = getwin(fp); 183 (void) fclose(fp); 184 returnCode(OK); 185 } 186 } 187 188 int scr_set(const char *file) 189 { 190 T((T_CALLED("scr_set(%s)"), _nc_visbuf(file))); 191 192 if (scr_init(file) == ERR) 193 returnCode(ERR); 194 else 195 { 196 delwin(newscr); 197 newscr = dupwin(curscr); 198 returnCode(OK); 199 } 200 } 201