1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* LINTLIBRARY */ 29 30 /* 31 * scr_dump.c 32 * 33 * XCurses Library 34 * 35 * Copyright 1990, 1995 by Mortice Kern Systems Inc. All rights reserved. 36 * 37 */ 38 39 #if M_RCSID 40 #ifndef lint 41 static char rcsID[] = 42 "$Header: /team/ps/sun_xcurses/archive/local_changes/xcurses/src/lib/" 43 "libxcurses/src/libc/xcurses/rcs/scr_dump.c 1.6 1998/06/01 16:25:23 " 44 "cbates Exp $"; 45 #endif 46 #endif 47 48 #include <private.h> 49 #include <sys/types.h> 50 #include <sys/stat.h> 51 52 /* 53 * Save the current screen image. 54 */ 55 int 56 scr_dump(const char *f) 57 { 58 int code; 59 FILE *fp; 60 61 code = ERR; 62 63 if ((fp = fopen(f, "wF")) != NULL) { 64 code = putwin(curscr, fp); 65 (void) fclose(fp); 66 } 67 68 return (code); 69 } 70 71 static int 72 scr_replace(WINDOW *w, const char *f) 73 { 74 int i; 75 FILE *fp; 76 WINDOW *new; 77 78 if ((fp = fopen(f, "rF")) == NULL) 79 return (ERR); 80 81 new = getwin(fp); 82 (void) fclose(fp); 83 84 if (new == NULL) 85 return (ERR); 86 87 if (new->_maxy != w->_maxy || new->_maxx != w->_maxx) { 88 (void) delwin(new); 89 return (ERR); 90 } 91 92 /* Replace contents of curscr window structure. */ 93 free(w->_base); 94 free(w->_line); 95 free(w->_first); 96 new->_flags &= ~W_CLEAR_WINDOW; /* Removed default clear command */ 97 *w = *new; 98 99 /* Rehash the current screen? */ 100 if (w == curscr) 101 for (i = 0; i < w->_maxy; ++i) 102 __m_cc_hash(w, __m_screen->_hash, i); 103 104 /* Discard the working window. */ 105 new->_base = NULL; 106 new->_line = NULL; 107 new->_first = NULL; 108 (void) delwin(new); 109 /* Make sure we know where the cursor is */ 110 (void) __m_mvcur(-1, -1, curscr->_cury, curscr->_curx, __m_outc); 111 return (OK); 112 } 113 114 /* 115 * A picture of what scr_restore(), scr_init(), and scr_set() do : 116 * 117 * scr_restore() scr_init() 118 * | | 119 * stdscr V V 120 * +----+ newscr curscr 121 * | | +-------+ +-------+ 122 * +----+ refresh() -> | | | | 123 * | | doupdate() -> | | 124 * w | | | | 125 * +----+ wrefresh(w) -> | | | | 126 * | | +-------+ +-------+ 127 * +----+ ^ ^ 128 * | | 129 * \---- scr_set() ----/ 130 */ 131 132 /* 133 * Get a screen image that will appear next doupdate(), 134 * replacing the current screen. 135 */ 136 int 137 scr_restore(const char *f) 138 { 139 int code; 140 141 code = scr_replace(__m_screen->_newscr, f); 142 143 return (code); 144 } 145 146 /* 147 * Get the screen image that really reflects what is on the screen, 148 * though the applicatiion may not want it. A subsequent doupdate() 149 * will compared and make changes against this image. 150 */ 151 int 152 scr_init(const char *f) 153 { 154 int code; 155 struct stat tty, dump; 156 char *name; 157 158 name = ttyname(cur_term->_ofd); 159 if ((non_rev_rmcup && exit_ca_mode != NULL) || 160 stat(f, &dump) != 0 || name == NULL || stat(name, &tty) != 0) 161 code = ERR; 162 else { 163 if (dump.st_mtime < tty.st_mtime) 164 code = ERR; 165 else { 166 code = scr_replace(__m_screen->_curscr, f); 167 } 168 } 169 170 return (code); 171 } 172 173 /* 174 * Get the screen image that is really on the screen and that the 175 * application wants on the screen. 176 */ 177 int 178 scr_set(const char *f) 179 { 180 int code; 181 182 if ((code = scr_init(f)) == OK) 183 code = scr_restore(f); 184 185 return (code); 186 } 187