1 /****************************************************************************
2 * Copyright (c) 1998-2001,2002 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 ****************************************************************************/
34
35 #include <curses.priv.h>
36
37 MODULE_ID("$Id: lib_screen.c,v 1.28 2002/09/14 23:30:41 tom Exp $")
38
NCURSES_EXPORT(WINDOW *)39 NCURSES_EXPORT(WINDOW *)
40 getwin(FILE * filep)
41 {
42 WINDOW tmp, *nwin;
43 int n;
44
45 T((T_CALLED("getwin(%p)"), filep));
46
47 clearerr(filep);
48 (void) fread(&tmp, sizeof(WINDOW), 1, filep);
49 if (ferror(filep))
50 returnWin(0);
51
52 if (tmp._flags & _ISPAD) {
53 nwin = newpad(tmp._maxy + 1, tmp._maxx + 1);
54 } else {
55 nwin = newwin(tmp._maxy + 1, tmp._maxx + 1, 0, 0);
56 }
57
58 /*
59 * We deliberately do not restore the _parx, _pary, or _parent
60 * fields, because the window hierarchy within which they
61 * made sense is probably gone.
62 */
63 if (nwin != 0) {
64 nwin->_curx = tmp._curx;
65 nwin->_cury = tmp._cury;
66 nwin->_maxy = tmp._maxy;
67 nwin->_maxx = tmp._maxx;
68 nwin->_begy = tmp._begy;
69 nwin->_begx = tmp._begx;
70 nwin->_yoffset = tmp._yoffset;
71 nwin->_flags = tmp._flags & ~(_SUBWIN);
72
73 nwin->_attrs = tmp._attrs;
74 nwin->_nc_bkgd = tmp._nc_bkgd;
75
76 nwin->_notimeout = tmp._notimeout;
77 nwin->_clear = tmp._clear;
78 nwin->_leaveok = tmp._leaveok;
79 nwin->_idlok = tmp._idlok;
80 nwin->_idcok = tmp._idcok;
81 nwin->_immed = tmp._immed;
82 nwin->_scroll = tmp._scroll;
83 nwin->_sync = tmp._sync;
84 nwin->_use_keypad = tmp._use_keypad;
85 nwin->_delay = tmp._delay;
86
87 nwin->_regtop = tmp._regtop;
88 nwin->_regbottom = tmp._regbottom;
89
90 if (tmp._flags & _ISPAD)
91 nwin->_pad = tmp._pad;
92
93 for (n = 0; n <= nwin->_maxy; n++) {
94 clearerr(filep);
95 (void) fread(nwin->_line[n].text,
96 sizeof(NCURSES_CH_T),
97 (size_t) (nwin->_maxx + 1),
98 filep);
99 if (ferror(filep)) {
100 delwin(nwin);
101 returnWin(0);
102 }
103 }
104 touchwin(nwin);
105 }
106 returnWin(nwin);
107 }
108
109 NCURSES_EXPORT(int)
putwin(WINDOW * win,FILE * filep)110 putwin(WINDOW *win, FILE * filep)
111 {
112 int code = ERR;
113 int n;
114
115 T((T_CALLED("putwin(%p,%p)"), win, filep));
116
117 if (win != 0) {
118 size_t len = (win->_maxx + 1);
119
120 clearerr(filep);
121 if (fwrite(win, sizeof(WINDOW), 1, filep) != 1
122 || ferror(filep))
123 returnCode(code);
124
125 for (n = 0; n <= win->_maxy; n++) {
126 if (fwrite(win->_line[n].text,
127 sizeof(NCURSES_CH_T), len, filep) != len
128 || ferror(filep)) {
129 returnCode(code);
130 }
131 }
132 code = OK;
133 }
134 returnCode(code);
135 }
136
137 NCURSES_EXPORT(int)
scr_restore(const char * file)138 scr_restore(const char *file)
139 {
140 FILE *fp = 0;
141
142 T((T_CALLED("scr_restore(%s)"), _nc_visbuf(file)));
143
144 if (_nc_access(file, R_OK) < 0
145 || (fp = fopen(file, "rb")) == 0) {
146 returnCode(ERR);
147 } else {
148 delwin(newscr);
149 SP->_newscr = newscr = getwin(fp);
150 (void) fclose(fp);
151 returnCode(OK);
152 }
153 }
154
155 NCURSES_EXPORT(int)
scr_dump(const char * file)156 scr_dump(const char *file)
157 {
158 FILE *fp = 0;
159
160 T((T_CALLED("scr_dump(%s)"), _nc_visbuf(file)));
161
162 if (_nc_access(file, W_OK) < 0
163 || (fp = fopen(file, "wb")) == 0) {
164 returnCode(ERR);
165 } else {
166 (void) putwin(newscr, fp);
167 (void) fclose(fp);
168 returnCode(OK);
169 }
170 }
171
172 NCURSES_EXPORT(int)
scr_init(const char * file)173 scr_init(const char *file)
174 {
175 FILE *fp = 0;
176
177 T((T_CALLED("scr_init(%s)"), _nc_visbuf(file)));
178
179 if (exit_ca_mode && non_rev_rmcup)
180 returnCode(ERR);
181
182 if (_nc_access(file, R_OK) < 0
183 || (fp = fopen(file, "rb")) == 0) {
184 returnCode(ERR);
185 } else {
186 delwin(curscr);
187 SP->_curscr = curscr = getwin(fp);
188 (void) fclose(fp);
189 returnCode(OK);
190 }
191 }
192
193 NCURSES_EXPORT(int)
scr_set(const char * file)194 scr_set(const char *file)
195 {
196 T((T_CALLED("scr_set(%s)"), _nc_visbuf(file)));
197
198 if (scr_init(file) == ERR) {
199 returnCode(ERR);
200 } else {
201 delwin(newscr);
202 SP->_newscr = newscr = dupwin(curscr);
203 returnCode(OK);
204 }
205 }
206