17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 77c478bd9Sstevel@tonic-gate * with the License. 87c478bd9Sstevel@tonic-gate * 97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 127c478bd9Sstevel@tonic-gate * and limitations under the License. 137c478bd9Sstevel@tonic-gate * 147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 197c478bd9Sstevel@tonic-gate * 207c478bd9Sstevel@tonic-gate * CDDL HEADER END 217c478bd9Sstevel@tonic-gate */ 227c478bd9Sstevel@tonic-gate /* 237c478bd9Sstevel@tonic-gate * Copyright 1997 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 287c478bd9Sstevel@tonic-gate /* All Rights Reserved */ 297c478bd9Sstevel@tonic-gate 307c478bd9Sstevel@tonic-gate /* 317c478bd9Sstevel@tonic-gate * University Copyright- Copyright (c) 1982, 1986, 1988 327c478bd9Sstevel@tonic-gate * The Regents of the University of California 337c478bd9Sstevel@tonic-gate * All Rights Reserved 347c478bd9Sstevel@tonic-gate * 357c478bd9Sstevel@tonic-gate * University Acknowledgment- Portions of this document are derived from 367c478bd9Sstevel@tonic-gate * software developed by the University of California, Berkeley, and its 377c478bd9Sstevel@tonic-gate * contributors. 387c478bd9Sstevel@tonic-gate */ 397c478bd9Sstevel@tonic-gate 407c478bd9Sstevel@tonic-gate /*LINTLIBRARY*/ 417c478bd9Sstevel@tonic-gate 427c478bd9Sstevel@tonic-gate #include "curses_inc.h" 437c478bd9Sstevel@tonic-gate #include <sys/types.h> 447c478bd9Sstevel@tonic-gate #include <sys/stat.h> 457c478bd9Sstevel@tonic-gate #include <stdlib.h> 467c478bd9Sstevel@tonic-gate 477c478bd9Sstevel@tonic-gate /* 487c478bd9Sstevel@tonic-gate * Initialize the screen image to be the image contained 497c478bd9Sstevel@tonic-gate * in the given file. This is usually used in a child process 507c478bd9Sstevel@tonic-gate * to initialize its idea of the screen image to be that of its 517c478bd9Sstevel@tonic-gate * parent. 527c478bd9Sstevel@tonic-gate * 537c478bd9Sstevel@tonic-gate * filep: pointer to the output stream 547c478bd9Sstevel@tonic-gate * type: 0: <curses> should assume that the physical screen is 557c478bd9Sstevel@tonic-gate * EXACTLY as stored in the file. Therefore, we take 567c478bd9Sstevel@tonic-gate * special care to make sure that /dev/tty and the terminal 577c478bd9Sstevel@tonic-gate * did not change in any way. This information can then 587c478bd9Sstevel@tonic-gate * be used in the update optimization of the new program 597c478bd9Sstevel@tonic-gate * so that the screen does not have to be cleared. Instead, 607c478bd9Sstevel@tonic-gate * curses, by knowing what's on the screen can optimally 617c478bd9Sstevel@tonic-gate * update it with the information of the new program. 627c478bd9Sstevel@tonic-gate * 637c478bd9Sstevel@tonic-gate * 1: Tell <curses> that the stored image should be 647c478bd9Sstevel@tonic-gate * the physical image. Sort of like a huge waddstr onto 657c478bd9Sstevel@tonic-gate * curscr. This can be used when a library wants to save 667c478bd9Sstevel@tonic-gate * a screen image and restore it at a later time. 677c478bd9Sstevel@tonic-gate * 687c478bd9Sstevel@tonic-gate * 2: Tell <curses> that the stored image is the physical 697c478bd9Sstevel@tonic-gate * image and also it is what the new program wants on the 707c478bd9Sstevel@tonic-gate * screen. This can be be thought of as a screen inheritance 717c478bd9Sstevel@tonic-gate * function. 727c478bd9Sstevel@tonic-gate */ 737c478bd9Sstevel@tonic-gate 747c478bd9Sstevel@tonic-gate int 757c478bd9Sstevel@tonic-gate scr_reset(FILE *filep, int type) 767c478bd9Sstevel@tonic-gate { 777c478bd9Sstevel@tonic-gate WINDOW *win = NULL, *win1 = NULL; 787c478bd9Sstevel@tonic-gate int *hash, y; 797c478bd9Sstevel@tonic-gate char clearit = FALSE; 807c478bd9Sstevel@tonic-gate short magic; 817c478bd9Sstevel@tonic-gate struct stat statbuf; 827c478bd9Sstevel@tonic-gate time_t ttytime; 837c478bd9Sstevel@tonic-gate 847c478bd9Sstevel@tonic-gate if (type != 1 && exit_ca_mode && *exit_ca_mode && non_rev_rmcup) { 857c478bd9Sstevel@tonic-gate if (type == 0) 867c478bd9Sstevel@tonic-gate goto err; 877c478bd9Sstevel@tonic-gate else { 887c478bd9Sstevel@tonic-gate #ifdef DEBUG 897c478bd9Sstevel@tonic-gate if (outf) 907c478bd9Sstevel@tonic-gate fprintf(outf, "clear it because of " 917c478bd9Sstevel@tonic-gate "exit_ca_mode\n"); 927c478bd9Sstevel@tonic-gate #endif /* DEBUG */ 937c478bd9Sstevel@tonic-gate clearit = TRUE; 947c478bd9Sstevel@tonic-gate } 957c478bd9Sstevel@tonic-gate } 967c478bd9Sstevel@tonic-gate 977c478bd9Sstevel@tonic-gate /* check magic number */ 98*59ee4095SToomas Soome if (fread((char *)&magic, sizeof (short), 1, filep) != 1) 997c478bd9Sstevel@tonic-gate goto err; 1007c478bd9Sstevel@tonic-gate if (magic != SVR3_DUMP_MAGIC_NUMBER) 1017c478bd9Sstevel@tonic-gate goto err; 1027c478bd9Sstevel@tonic-gate 1037c478bd9Sstevel@tonic-gate /* get modification time of image in file */ 104*59ee4095SToomas Soome if (fread((char *)&ttytime, sizeof (time_t), 1, filep) != 1) 1057c478bd9Sstevel@tonic-gate goto err; 1067c478bd9Sstevel@tonic-gate 1077c478bd9Sstevel@tonic-gate if ((type != 1) && ((ttyname(cur_term->Filedes) == NULL) || 1087c478bd9Sstevel@tonic-gate (fstat(cur_term->Filedes, &statbuf) < 0) || 1097c478bd9Sstevel@tonic-gate (statbuf.st_mtime != ttytime))) { 1107c478bd9Sstevel@tonic-gate if (type == 0) 1117c478bd9Sstevel@tonic-gate goto err; 1127c478bd9Sstevel@tonic-gate else { 1137c478bd9Sstevel@tonic-gate #ifdef DEBUG 1147c478bd9Sstevel@tonic-gate if (outf) 1157c478bd9Sstevel@tonic-gate fprintf(outf, "Filedes = %hd, " 1167c478bd9Sstevel@tonic-gate "statbuf.st_mtime = %d, " 1177c478bd9Sstevel@tonic-gate "ttytime = %d\n", cur_term->Filedes, 1187c478bd9Sstevel@tonic-gate statbuf.st_mtime, ttytime); 1197c478bd9Sstevel@tonic-gate #endif /* DEBUG */ 1207c478bd9Sstevel@tonic-gate clearit = TRUE; 1217c478bd9Sstevel@tonic-gate } 1227c478bd9Sstevel@tonic-gate } 1237c478bd9Sstevel@tonic-gate 1247c478bd9Sstevel@tonic-gate /* if get here, everything is ok, read the curscr image */ 1257c478bd9Sstevel@tonic-gate if (((win = getwin(filep)) == NULL) || 1267c478bd9Sstevel@tonic-gate ((type == 2) && ((win1 = dupwin(win)) == NULL)) || 1277c478bd9Sstevel@tonic-gate (win->_maxy != curscr->_maxy) || (win->_maxx != curscr->_maxx) || 1287c478bd9Sstevel@tonic-gate /* soft labels */ 129*59ee4095SToomas Soome (fread((char *)&magic, sizeof (int), 1, filep) != 1)) 1307c478bd9Sstevel@tonic-gate goto err; 1317c478bd9Sstevel@tonic-gate 1327c478bd9Sstevel@tonic-gate /* 133*59ee4095SToomas Soome * if soft labels were dumped, we would like either read them 134*59ee4095SToomas Soome * or advance the file pointer pass them 135*59ee4095SToomas Soome */ 1367c478bd9Sstevel@tonic-gate if (magic) { 1377c478bd9Sstevel@tonic-gate short i, labmax, lablen; 1387c478bd9Sstevel@tonic-gate SLK_MAP *slk = SP->slk; 1397c478bd9Sstevel@tonic-gate /* 1407c478bd9Sstevel@tonic-gate * Why doesn't the following line and the two below 1417c478bd9Sstevel@tonic-gate * that access those variables work ? 1427c478bd9Sstevel@tonic-gate */ 1437c478bd9Sstevel@tonic-gate /* 1447c478bd9Sstevel@tonic-gate * char **labdis = SP->slk->_ldis, **labval = SP->slk->_lval; 145*59ee4095SToomas Soome */ 1467c478bd9Sstevel@tonic-gate 147*59ee4095SToomas Soome if ((fread((char *)&labmax, sizeof (short), 1, filep) != 1) || 148*59ee4095SToomas Soome (fread((char *)&lablen, sizeof (short), 1, filep) != 1)) { 1497c478bd9Sstevel@tonic-gate goto err; 1507c478bd9Sstevel@tonic-gate } 1517c478bd9Sstevel@tonic-gate 1527c478bd9Sstevel@tonic-gate if (slk != NULL) { 1537c478bd9Sstevel@tonic-gate if ((labmax != slk->_num) || 1547c478bd9Sstevel@tonic-gate (lablen != (slk->_len + 1))) 1557c478bd9Sstevel@tonic-gate goto err; 1567c478bd9Sstevel@tonic-gate 1577c478bd9Sstevel@tonic-gate for (i = 0; i < labmax; i++) { 1587c478bd9Sstevel@tonic-gate /* 1597c478bd9Sstevel@tonic-gate * if ((fread(labdis[i], sizeof (char), lablen, 1607c478bd9Sstevel@tonic-gate * filep) != lablen) || 1617c478bd9Sstevel@tonic-gate * (fread(labval[i], sizeof (char), lablen, 1627c478bd9Sstevel@tonic-gate * filep != lablen)) 163*59ee4095SToomas Soome */ 1647c478bd9Sstevel@tonic-gate if ((fread(slk->_ldis[i], sizeof (char), 1657c478bd9Sstevel@tonic-gate lablen, filep) != lablen) || 1667c478bd9Sstevel@tonic-gate (fread(slk->_lval[i], 1677c478bd9Sstevel@tonic-gate sizeof (char), lablen, filep) != lablen)) { 1687c478bd9Sstevel@tonic-gate goto err; 1697c478bd9Sstevel@tonic-gate } 1707c478bd9Sstevel@tonic-gate } 1717c478bd9Sstevel@tonic-gate (*_do_slk_tch)(); 1727c478bd9Sstevel@tonic-gate } else { 173*59ee4095SToomas Soome if (fseek(filep, (long)(2 * labmax * lablen * 1747c478bd9Sstevel@tonic-gate sizeof (char)), 1) != 0) 1757c478bd9Sstevel@tonic-gate goto err; 1767c478bd9Sstevel@tonic-gate } 1777c478bd9Sstevel@tonic-gate } 1787c478bd9Sstevel@tonic-gate 1797c478bd9Sstevel@tonic-gate /* read the color information(if any) from the file */ 1807c478bd9Sstevel@tonic-gate 181*59ee4095SToomas Soome if (fread((char *)&magic, sizeof (int), 1, filep) != 1) 1827c478bd9Sstevel@tonic-gate goto err; 1837c478bd9Sstevel@tonic-gate 1847c478bd9Sstevel@tonic-gate if (magic) { 1857c478bd9Sstevel@tonic-gate int colors, color_pairs; 1867c478bd9Sstevel@tonic-gate bool could_change; 1877c478bd9Sstevel@tonic-gate int i; 1887c478bd9Sstevel@tonic-gate 1897c478bd9Sstevel@tonic-gate /* if the new terminal doesn't support colors, or it supports */ 1907c478bd9Sstevel@tonic-gate /* less colors (or color_pairs) than the old terminal, or */ 1917c478bd9Sstevel@tonic-gate /* start_color() has not been called, simply advance the file */ 1927c478bd9Sstevel@tonic-gate /* pointer pass the color related info. */ 1937c478bd9Sstevel@tonic-gate /* Note: must to read the first line of color info, even if the */ 1947c478bd9Sstevel@tonic-gate /* new terminal doesn't support color, in order to know how to */ 1957c478bd9Sstevel@tonic-gate /* deal with the rest of the file */ 1967c478bd9Sstevel@tonic-gate 197*59ee4095SToomas Soome if ((fread((char *)&colors, sizeof (int), 1, filep) != 1) || 198*59ee4095SToomas Soome (fread((char *)&color_pairs, sizeof (int), 1, 199*59ee4095SToomas Soome filep) != 1) || (fread((char *)&could_change, 2007c478bd9Sstevel@tonic-gate sizeof (char), 1, filep) != 1)) 2017c478bd9Sstevel@tonic-gate goto err; 2027c478bd9Sstevel@tonic-gate 2037c478bd9Sstevel@tonic-gate if (max_pairs == -1 || cur_term->_pairs_tbl == NULL || 2047c478bd9Sstevel@tonic-gate colors > max_colors || color_pairs > max_pairs) { 205*59ee4095SToomas Soome if (fseek(filep, (long)(colors * sizeof (_Color) + 2067c478bd9Sstevel@tonic-gate color_pairs * sizeof (_Color_pair)), 1) != 0) 2077c478bd9Sstevel@tonic-gate goto err; 2087c478bd9Sstevel@tonic-gate } else { 2097c478bd9Sstevel@tonic-gate _Color_pair *ptp, *save_ptp; 2107c478bd9Sstevel@tonic-gate 2117c478bd9Sstevel@tonic-gate /* if both old and new terminals could modify colors, read in */ 2127c478bd9Sstevel@tonic-gate /* color table, and call init_color for each color */ 2137c478bd9Sstevel@tonic-gate 2147c478bd9Sstevel@tonic-gate if (could_change) { 2157c478bd9Sstevel@tonic-gate if (can_change) { 2167c478bd9Sstevel@tonic-gate _Color *ctp, *save_ctp; 2177c478bd9Sstevel@tonic-gate 2187c478bd9Sstevel@tonic-gate if ((save_ctp = (ctp = (_Color *) 2197c478bd9Sstevel@tonic-gate malloc(colors * 2207c478bd9Sstevel@tonic-gate sizeof (_Color)))) == NULL) 2217c478bd9Sstevel@tonic-gate goto err; 2227c478bd9Sstevel@tonic-gate 2237c478bd9Sstevel@tonic-gate if (fread(ctp, sizeof (_Color), 2247c478bd9Sstevel@tonic-gate colors, filep) != colors) 2257c478bd9Sstevel@tonic-gate goto err; 2267c478bd9Sstevel@tonic-gate 2277c478bd9Sstevel@tonic-gate for (i = 0; i < colors; i++, ctp++) { 2287c478bd9Sstevel@tonic-gate /* LINTED */ 2297c478bd9Sstevel@tonic-gate (void) init_color((short)i, 2307c478bd9Sstevel@tonic-gate ctp->r, ctp->g, ctp->b); 2317c478bd9Sstevel@tonic-gate } 2327c478bd9Sstevel@tonic-gate free(save_ctp); 2337c478bd9Sstevel@tonic-gate } else { 2347c478bd9Sstevel@tonic-gate 2357c478bd9Sstevel@tonic-gate /* the old terminal could modify colors, by the new one */ 2367c478bd9Sstevel@tonic-gate /* cannot skip over color_table info. */ 2377c478bd9Sstevel@tonic-gate 238*59ee4095SToomas Soome if (fseek(filep, (long)(colors * 2397c478bd9Sstevel@tonic-gate sizeof (_Color)), 1) != 0) 2407c478bd9Sstevel@tonic-gate goto err; 2417c478bd9Sstevel@tonic-gate } 2427c478bd9Sstevel@tonic-gate } 2437c478bd9Sstevel@tonic-gate 2447c478bd9Sstevel@tonic-gate /* read color_pairs info. call init_pair for each pair */ 2457c478bd9Sstevel@tonic-gate 2467c478bd9Sstevel@tonic-gate if ((save_ptp = (ptp = (_Color_pair *) 2477c478bd9Sstevel@tonic-gate malloc(color_pairs * sizeof (_Color_pair)))) == 2487c478bd9Sstevel@tonic-gate NULL) 2497c478bd9Sstevel@tonic-gate goto err; 2507c478bd9Sstevel@tonic-gate if (fread(ptp, sizeof (_Color_pair), color_pairs, 2517c478bd9Sstevel@tonic-gate filep) != color_pairs) { 2527c478bd9Sstevel@tonic-gate err: 2537c478bd9Sstevel@tonic-gate if (win != NULL) 2547c478bd9Sstevel@tonic-gate (void) delwin(win); 2557c478bd9Sstevel@tonic-gate if (win1 != NULL) 2567c478bd9Sstevel@tonic-gate (void) delwin(win1); 2577c478bd9Sstevel@tonic-gate if (type == 0) 2587c478bd9Sstevel@tonic-gate curscr->_clear = TRUE; 2597c478bd9Sstevel@tonic-gate return (ERR); 2607c478bd9Sstevel@tonic-gate } 2617c478bd9Sstevel@tonic-gate 2627c478bd9Sstevel@tonic-gate for (i = 1, ++ptp; i <= color_pairs; i++, ptp++) { 2637c478bd9Sstevel@tonic-gate if (ptp->init) 2647c478bd9Sstevel@tonic-gate /* LINTED */ 2657c478bd9Sstevel@tonic-gate (void) init_pair((short)i, 266*59ee4095SToomas Soome ptp->foreground, ptp->background); 2677c478bd9Sstevel@tonic-gate } 2687c478bd9Sstevel@tonic-gate free(save_ptp); 2697c478bd9Sstevel@tonic-gate } 2707c478bd9Sstevel@tonic-gate } 2717c478bd9Sstevel@tonic-gate 2727c478bd9Sstevel@tonic-gate /* substitute read in window for the curscr */ 2737c478bd9Sstevel@tonic-gate switch (type) { 2747c478bd9Sstevel@tonic-gate case 1: 2757c478bd9Sstevel@tonic-gate case 2: 2767c478bd9Sstevel@tonic-gate (void) delwin(_virtscr); 2777c478bd9Sstevel@tonic-gate hash = _VIRTHASH; 2787c478bd9Sstevel@tonic-gate if (type == 1) { 2797c478bd9Sstevel@tonic-gate SP->virt_scr = _virtscr = win; 2807c478bd9Sstevel@tonic-gate _VIRTTOP = 0; 2817c478bd9Sstevel@tonic-gate _VIRTBOT = curscr->_maxy - 1; 2827c478bd9Sstevel@tonic-gate break; 2837c478bd9Sstevel@tonic-gate } 2847c478bd9Sstevel@tonic-gate SP->virt_scr = _virtscr = win1; 2857c478bd9Sstevel@tonic-gate _VIRTTOP = curscr->_maxy; 2867c478bd9Sstevel@tonic-gate _VIRTBOT = -1; 2877c478bd9Sstevel@tonic-gate /* clear the hash table */ 2887c478bd9Sstevel@tonic-gate for (y = curscr->_maxy; y > 0; --y) 2897c478bd9Sstevel@tonic-gate *hash++ = _NOHASH; 290*59ee4095SToomas Soome /* FALLTHROUGH */ 2917c478bd9Sstevel@tonic-gate case 0: 2927c478bd9Sstevel@tonic-gate { 2937c478bd9Sstevel@tonic-gate int saveflag = curscr->_flags & _CANT_BE_IMMED; 2947c478bd9Sstevel@tonic-gate 2957c478bd9Sstevel@tonic-gate (void) delwin(curscr); 2967c478bd9Sstevel@tonic-gate SP->cur_scr = curscr = win; 2977c478bd9Sstevel@tonic-gate curscr->_sync = TRUE; 2987c478bd9Sstevel@tonic-gate curscr->_flags |= saveflag; 2997c478bd9Sstevel@tonic-gate hash = _CURHASH; 3007c478bd9Sstevel@tonic-gate } 3017c478bd9Sstevel@tonic-gate } 3027c478bd9Sstevel@tonic-gate 3037c478bd9Sstevel@tonic-gate /* clear the hash table */ 3047c478bd9Sstevel@tonic-gate for (y = curscr->_maxy; y > 0; --y) 3057c478bd9Sstevel@tonic-gate *hash++ = _NOHASH; 3067c478bd9Sstevel@tonic-gate 3077c478bd9Sstevel@tonic-gate curscr->_clear = clearit; 3087c478bd9Sstevel@tonic-gate return (OK); 3097c478bd9Sstevel@tonic-gate } 310