1 /****************************************************************************
2 * Copyright (c) 1998-2009,2011 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 * and: Juergen Pfeifer 2009 *
34 ****************************************************************************/
35
36 #include <curses.priv.h>
37
38 #ifndef CUR
39 #define CUR SP_TERMTYPE
40 #endif
41
42 MODULE_ID("$Id: lib_screen.c,v 1.41 2011/10/22 15:03:11 tom Exp $")
43
44 #define MAX_SIZE 0x3fff /* 16k is big enough for a window or pad */
45
NCURSES_EXPORT(WINDOW *)46 NCURSES_EXPORT(WINDOW *)
47 NCURSES_SP_NAME(getwin) (NCURSES_SP_DCLx FILE *filep)
48 {
49 WINDOW tmp, *nwin;
50 int n;
51
52 T((T_CALLED("getwin(%p)"), (void *) filep));
53
54 if (filep == 0) {
55 returnWin(0);
56 }
57 clearerr(filep);
58 if (fread(&tmp, (size_t) 1, sizeof(WINDOW), filep) < sizeof(WINDOW)
59 || ferror(filep)
60 || tmp._maxy == 0
61 || tmp._maxy > MAX_SIZE
62 || tmp._maxx == 0
63 || tmp._maxx > MAX_SIZE) {
64 returnWin(0);
65 }
66
67 if (tmp._flags & _ISPAD) {
68 nwin = NCURSES_SP_NAME(newpad) (NCURSES_SP_ARGx
69 tmp._maxy + 1,
70 tmp._maxx + 1);
71 } else {
72 nwin = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx
73 tmp._maxy + 1,
74 tmp._maxx + 1, 0, 0);
75 }
76
77 /*
78 * We deliberately do not restore the _parx, _pary, or _parent
79 * fields, because the window hierarchy within which they
80 * made sense is probably gone.
81 */
82 if (nwin != 0) {
83 size_t linesize = sizeof(NCURSES_CH_T) * (size_t) (tmp._maxx + 1);
84
85 nwin->_curx = tmp._curx;
86 nwin->_cury = tmp._cury;
87 nwin->_maxy = tmp._maxy;
88 nwin->_maxx = tmp._maxx;
89 nwin->_begy = tmp._begy;
90 nwin->_begx = tmp._begx;
91 nwin->_yoffset = tmp._yoffset;
92 nwin->_flags = tmp._flags & ~(_SUBWIN);
93
94 WINDOW_ATTRS(nwin) = WINDOW_ATTRS(&tmp);
95 nwin->_nc_bkgd = tmp._nc_bkgd;
96
97 nwin->_notimeout = tmp._notimeout;
98 nwin->_clear = tmp._clear;
99 nwin->_leaveok = tmp._leaveok;
100 nwin->_idlok = tmp._idlok;
101 nwin->_idcok = tmp._idcok;
102 nwin->_immed = tmp._immed;
103 nwin->_scroll = tmp._scroll;
104 nwin->_sync = tmp._sync;
105 nwin->_use_keypad = tmp._use_keypad;
106 nwin->_delay = tmp._delay;
107
108 nwin->_regtop = tmp._regtop;
109 nwin->_regbottom = tmp._regbottom;
110
111 if (tmp._flags & _ISPAD)
112 nwin->_pad = tmp._pad;
113
114 for (n = 0; n <= nwin->_maxy; n++) {
115 clearerr(filep);
116 if (fread(nwin->_line[n].text, (size_t) 1, linesize, filep) < linesize
117 || ferror(filep)) {
118 delwin(nwin);
119 returnWin(0);
120 }
121 }
122 touchwin(nwin);
123 }
124 returnWin(nwin);
125 }
126
127 #if NCURSES_SP_FUNCS
128 NCURSES_EXPORT(WINDOW *)
getwin(FILE * filep)129 getwin(FILE *filep)
130 {
131 return NCURSES_SP_NAME(getwin) (CURRENT_SCREEN, filep);
132 }
133 #endif
134
135 NCURSES_EXPORT(int)
putwin(WINDOW * win,FILE * filep)136 putwin(WINDOW *win, FILE *filep)
137 {
138 int code = ERR;
139 int n;
140
141 T((T_CALLED("putwin(%p,%p)"), (void *) win, (void *) filep));
142
143 if (win != 0) {
144 size_t len = (size_t) (win->_maxx + 1);
145
146 clearerr(filep);
147 if (fwrite(win, sizeof(WINDOW), (size_t) 1, filep) != 1
148 || ferror(filep))
149 returnCode(code);
150
151 for (n = 0; n <= win->_maxy; n++) {
152 if (fwrite(win->_line[n].text,
153 sizeof(NCURSES_CH_T), len, filep) != len
154 || ferror(filep)) {
155 returnCode(code);
156 }
157 }
158 code = OK;
159 }
160 returnCode(code);
161 }
162
163 NCURSES_EXPORT(int)
NCURSES_SP_NAME(scr_restore)164 NCURSES_SP_NAME(scr_restore) (NCURSES_SP_DCLx const char *file)
165 {
166 FILE *fp = 0;
167
168 T((T_CALLED("scr_restore(%p,%s)"), (void *) SP_PARM, _nc_visbuf(file)));
169
170 if (_nc_access(file, R_OK) < 0
171 || (fp = fopen(file, "rb")) == 0) {
172 returnCode(ERR);
173 } else {
174 delwin(NewScreen(SP_PARM));
175 NewScreen(SP_PARM) = getwin(fp);
176 #if !USE_REENTRANT
177 newscr = NewScreen(SP_PARM);
178 #endif
179 (void) fclose(fp);
180 returnCode(OK);
181 }
182 }
183
184 #if NCURSES_SP_FUNCS
185 NCURSES_EXPORT(int)
scr_restore(const char * file)186 scr_restore(const char *file)
187 {
188 return NCURSES_SP_NAME(scr_restore) (CURRENT_SCREEN, file);
189 }
190 #endif
191
192 NCURSES_EXPORT(int)
scr_dump(const char * file)193 scr_dump(const char *file)
194 {
195 int result;
196 FILE *fp = 0;
197
198 T((T_CALLED("scr_dump(%s)"), _nc_visbuf(file)));
199
200 if (_nc_access(file, W_OK) < 0
201 || (fp = fopen(file, "wb")) == 0) {
202 result = ERR;
203 } else {
204 (void) putwin(newscr, fp);
205 (void) fclose(fp);
206 result = OK;
207 }
208 returnCode(result);
209 }
210
211 NCURSES_EXPORT(int)
NCURSES_SP_NAME(scr_init)212 NCURSES_SP_NAME(scr_init) (NCURSES_SP_DCLx const char *file)
213 {
214 FILE *fp = 0;
215 int code = ERR;
216
217 T((T_CALLED("scr_init(%p,%s)"), (void *) SP_PARM, _nc_visbuf(file)));
218
219 if (SP_PARM != 0 &&
220 #ifdef USE_TERM_DRIVER
221 InfoOf(SP_PARM).caninit
222 #else
223 !(exit_ca_mode && non_rev_rmcup)
224 #endif
225 ) {
226 if (_nc_access(file, R_OK) >= 0
227 && (fp = fopen(file, "rb")) != 0) {
228 delwin(CurScreen(SP_PARM));
229 CurScreen(SP_PARM) = getwin(fp);
230 #if !USE_REENTRANT
231 curscr = CurScreen(SP_PARM);
232 #endif
233 (void) fclose(fp);
234 code = OK;
235 }
236 }
237 returnCode(code);
238 }
239
240 #if NCURSES_SP_FUNCS
241 NCURSES_EXPORT(int)
scr_init(const char * file)242 scr_init(const char *file)
243 {
244 return NCURSES_SP_NAME(scr_init) (CURRENT_SCREEN, file);
245 }
246 #endif
247
248 NCURSES_EXPORT(int)
NCURSES_SP_NAME(scr_set)249 NCURSES_SP_NAME(scr_set) (NCURSES_SP_DCLx const char *file)
250 {
251 T((T_CALLED("scr_set(%p,%s)"), (void *) SP_PARM, _nc_visbuf(file)));
252
253 if (NCURSES_SP_NAME(scr_init) (NCURSES_SP_ARGx file) == ERR) {
254 returnCode(ERR);
255 } else {
256 delwin(NewScreen(SP_PARM));
257 NewScreen(SP_PARM) = dupwin(curscr);
258 #if !USE_REENTRANT
259 newscr = NewScreen(SP_PARM);
260 #endif
261 returnCode(OK);
262 }
263 }
264
265 #if NCURSES_SP_FUNCS
266 NCURSES_EXPORT(int)
scr_set(const char * file)267 scr_set(const char *file)
268 {
269 return NCURSES_SP_NAME(scr_set) (CURRENT_SCREEN, file);
270 }
271 #endif
272