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 /*
27 * scr_dump.c
28 *
29 * XCurses Library
30 *
31 * Copyright 1990, 1995 by Mortice Kern Systems Inc. All rights reserved.
32 *
33 */
34
35 #if M_RCSID
36 #ifndef lint
37 static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/scr_dump.c 1.1 1995/06/21 16:19:43 ant Exp $";
38 #endif
39 #endif
40
41 #include <private.h>
42 #include <sys/types.h>
43 #include <sys/stat.h>
44
45 /*
46 * Save the current screen image.
47 */
48 int
scr_dump(f)49 scr_dump(f)
50 const char *f;
51 {
52 int code;
53 FILE *fp;
54
55 #ifdef M_CURSES_TRACE
56 __m_trace("scr_dump(%p=\"%s\")", f);
57 #endif
58
59 code = ERR;
60
61 if ((fp = fopen(f, "wF")) != (FILE *) 0) {
62 code = putwin(curscr, fp);
63 (void) fclose(fp);
64 }
65
66 return __m_return_code("scr_dump", code);
67 }
68
69 static int
scr_replace(w,f)70 scr_replace(w, f)
71 WINDOW *w;
72 const char *f;
73 {
74 int i;
75 FILE *fp;
76 WINDOW *new;
77
78 if ((fp = fopen(f, "rF")) == (FILE *) 0)
79 return ERR;
80
81 new = getwin(fp);
82 (void) fclose(fp);
83
84 if (new == (WINDOW *) 0)
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 *w = *new;
97
98 /* Rehash the current screen? */
99 if (w == curscr)
100 for (i = 0; i < w->_maxy; ++i)
101 __m_cc_hash(w, __m_screen->_hash, i);
102
103 /* Discard the working window. */
104 new->_base = (cchar_t *) 0;
105 new->_line = (cchar_t **) 0;
106 new->_first = (short *) 0;
107 (void) delwin(new);
108
109 return OK;
110 }
111
112 /*
113 * A picture of what scr_restore(), scr_init(), and scr_set() do :
114 *
115 * scr_restore() scr_init()
116 * | |
117 * stdscr V V
118 * +----+ newscr curscr
119 * | | +-------+ +-------+
120 * +----+ refresh() -> | | | |
121 * | | doupdate() -> | |
122 * w | | | |
123 * +----+ wrefresh(w) -> | | | |
124 * | | +-------+ +-------+
125 * +----+ ^ ^
126 * | |
127 * \---- scr_set() ----/
128 */
129
130 /*
131 * Get a screen image that will appear next doupdate(),
132 * replacing the current screen.
133 */
134 int
scr_restore(f)135 scr_restore(f)
136 const char *f;
137 {
138 int code;
139
140 #ifdef M_CURSES_TRACE
141 __m_trace("scr_restore(%p=\"%s\")", f);
142 #endif
143
144 code = scr_replace(__m_screen->_newscr, f);
145
146 return __m_return_code("scr_restore", code);
147 }
148
149 /*
150 * Get the screen image that really reflects what is on the screen,
151 * though the applicatiion may not want it. A subsequent doupdate()
152 * will compared and make changes against this image.
153 */
154 int
scr_init(f)155 scr_init(f)
156 const char *f;
157 {
158 int code;
159 struct stat tty, dump;
160
161 #ifdef M_CURSES_TRACE
162 __m_trace("scr_init(%p=\"%s\")", f);
163 #endif
164
165 if ((non_rev_rmcup && exit_ca_mode != (char *) 0)
166 || stat(f, &dump) != 0 || stat(ctermid((char *) 0), &tty) != 0
167 || dump.st_mtime < tty.st_mtime)
168 code = ERR;
169 else
170 code = scr_replace(__m_screen->_curscr, f);
171
172 return __m_return_code("scr_init", code);
173 }
174
175 /*
176 * Get the screen image that is really on the screen and that the
177 * application wants on the screen.
178 */
179 int
scr_set(f)180 scr_set(f)
181 const char *f;
182 {
183 int code;
184
185 #ifdef M_CURSES_TRACE
186 __m_trace("scr_set(%p=\"%s\")", f);
187 #endif
188
189 if ((code = scr_init(f)) == OK)
190 code = scr_restore(f);
191
192 return __m_return_code("scr_set", code);
193 }
194
195