1 /****************************************************************************
2  * Copyright (c) 1998-2011,2013 Free Software Foundation, Inc.              *
3  *                                                                          *
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5  * copy of this software and associated documentation files (the            *
6  * "Software"), to deal in the Software without restriction, including      *
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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 /*
37 **	lib_options.c
38 **
39 **	The routines to handle option setting.
40 **
41 */
42 
43 #include <curses.priv.h>
44 
45 #ifndef CUR
46 #define CUR SP_TERMTYPE
47 #endif
48 
49 MODULE_ID("$Id: lib_options.c,v 1.76 2013/12/14 22:23:58 tom Exp $")
50 
51 NCURSES_EXPORT(int)
52 idlok(WINDOW *win, bool flag)
53 {
54     int res = ERR;
55     T((T_CALLED("idlok(%p,%d)"), (void *) win, flag));
56 
57     if (win) {
58 	SCREEN *sp = _nc_screen_of(win);
59 	if (sp != 0
60 #ifdef USE_TERM_DRIVER
61 	    && IsTermInfo(sp)
62 #endif
63 	    ) {
64 	    sp->_nc_sp_idlok =
65 		win->_idlok = (flag && (NCURSES_SP_NAME(has_il) (NCURSES_SP_ARG)
66 					|| change_scroll_region));
67 	    res = OK;
68 	}
69     }
70     returnCode(res);
71 }
72 
73 NCURSES_EXPORT(void)
74 idcok(WINDOW *win, bool flag)
75 {
76     T((T_CALLED("idcok(%p,%d)"), (void *) win, flag));
77 
78     if (win) {
79 	SCREEN *sp = _nc_screen_of(win);
80 	sp->_nc_sp_idcok = win->_idcok = (flag && NCURSES_SP_NAME(has_ic) (NCURSES_SP_ARG));
81     }
82     returnVoid;
83 }
84 
85 NCURSES_EXPORT(int)
86 NCURSES_SP_NAME(halfdelay) (NCURSES_SP_DCLx int t)
87 {
88     T((T_CALLED("halfdelay(%p,%d)"), (void *) SP_PARM, t));
89 
90     if (t < 1 || t > 255 || !IsValidTIScreen(SP_PARM))
91 	returnCode(ERR);
92 
93     NCURSES_SP_NAME(cbreak) (NCURSES_SP_ARG);
94     SP_PARM->_cbreak = t + 1;
95     returnCode(OK);
96 }
97 
98 #if NCURSES_SP_FUNCS
99 NCURSES_EXPORT(int)
100 halfdelay(int t)
101 {
102     return NCURSES_SP_NAME(halfdelay) (CURRENT_SCREEN, t);
103 }
104 #endif
105 
106 NCURSES_EXPORT(int)
107 nodelay(WINDOW *win, bool flag)
108 {
109     T((T_CALLED("nodelay(%p,%d)"), (void *) win, flag));
110 
111     if (win) {
112 	if (flag == TRUE)
113 	    win->_delay = 0;
114 	else
115 	    win->_delay = -1;
116 	returnCode(OK);
117     } else
118 	returnCode(ERR);
119 }
120 
121 NCURSES_EXPORT(int)
122 notimeout(WINDOW *win, bool f)
123 {
124     T((T_CALLED("notimeout(%p,%d)"), (void *) win, f));
125 
126     if (win) {
127 	win->_notimeout = f;
128 	returnCode(OK);
129     } else
130 	returnCode(ERR);
131 }
132 
133 NCURSES_EXPORT(void)
134 wtimeout(WINDOW *win, int delay)
135 {
136     T((T_CALLED("wtimeout(%p,%d)"), (void *) win, delay));
137 
138     if (win) {
139 	win->_delay = delay;
140     }
141     returnVoid;
142 }
143 
144 NCURSES_EXPORT(int)
145 keypad(WINDOW *win, bool flag)
146 {
147     T((T_CALLED("keypad(%p,%d)"), (void *) win, flag));
148 
149     if (win) {
150 	win->_use_keypad = flag;
151 	returnCode(_nc_keypad(_nc_screen_of(win), flag));
152     } else
153 	returnCode(ERR);
154 }
155 
156 NCURSES_EXPORT(int)
157 meta(WINDOW *win GCC_UNUSED, bool flag)
158 {
159     int result = ERR;
160     SCREEN *sp = (win == 0) ? CURRENT_SCREEN : _nc_screen_of(win);
161 
162     /* Ok, we stay relaxed and don't signal an error if win is NULL */
163     T((T_CALLED("meta(%p,%d)"), (void *) win, flag));
164 
165     /* Ok, we stay relaxed and don't signal an error if win is NULL */
166 
167     if (sp != 0) {
168 	sp->_use_meta = flag;
169 #ifdef USE_TERM_DRIVER
170 	if (IsTermInfo(sp)) {
171 	    if (flag) {
172 		NCURSES_PUTP2("meta_on", meta_on);
173 	    } else {
174 		NCURSES_PUTP2("meta_off", meta_off);
175 	    }
176 	}
177 #else
178 	if (flag) {
179 	    NCURSES_PUTP2("meta_on", meta_on);
180 	} else {
181 	    NCURSES_PUTP2("meta_off", meta_off);
182 	}
183 #endif
184 	result = OK;
185     }
186     returnCode(result);
187 }
188 
189 /* curs_set() moved here to narrow the kernel interface */
190 
191 NCURSES_EXPORT(int)
192 NCURSES_SP_NAME(curs_set) (NCURSES_SP_DCLx int vis)
193 {
194     int code = ERR;
195     T((T_CALLED("curs_set(%p,%d)"), (void *) SP_PARM, vis));
196 
197     if (SP_PARM != 0 && vis >= 0 && vis <= 2) {
198 	int cursor = SP_PARM->_cursor;
199 	bool bBuiltIn = !IsTermInfo(SP_PARM);
200 	if (vis == cursor) {
201 	    code = cursor;
202 	} else {
203 	    if (!bBuiltIn) {
204 		switch (vis) {
205 		case 2:
206 		    code = NCURSES_PUTP2_FLUSH("cursor_visible",
207 					       cursor_visible);
208 		    break;
209 		case 1:
210 		    code = NCURSES_PUTP2_FLUSH("cursor_normal",
211 					       cursor_normal);
212 		    break;
213 		case 0:
214 		    code = NCURSES_PUTP2_FLUSH("cursor_invisible",
215 					       cursor_invisible);
216 		    break;
217 		}
218 	    } else
219 		code = ERR;
220 	    if (code != ERR)
221 		code = (cursor == -1 ? 1 : cursor);
222 	    SP_PARM->_cursor = vis;
223 	}
224     }
225     returnCode(code);
226 }
227 
228 #if NCURSES_SP_FUNCS
229 NCURSES_EXPORT(int)
230 curs_set(int vis)
231 {
232     return (NCURSES_SP_NAME(curs_set) (CURRENT_SCREEN, vis));
233 }
234 #endif
235 
236 NCURSES_EXPORT(int)
237 NCURSES_SP_NAME(typeahead) (NCURSES_SP_DCLx int fd)
238 {
239     T((T_CALLED("typeahead(%p, %d)"), (void *) SP_PARM, fd));
240     if (IsValidTIScreen(SP_PARM)) {
241 	SP_PARM->_checkfd = fd;
242 	returnCode(OK);
243     } else {
244 	returnCode(ERR);
245     }
246 }
247 
248 #if NCURSES_SP_FUNCS
249 NCURSES_EXPORT(int)
250 typeahead(int fd)
251 {
252     return NCURSES_SP_NAME(typeahead) (CURRENT_SCREEN, fd);
253 }
254 #endif
255 
256 /*
257 **      has_key()
258 **
259 **      Return TRUE if the current terminal has the given key
260 **
261 */
262 
263 #if NCURSES_EXT_FUNCS
264 static int
265 has_key_internal(int keycode, TRIES * tp)
266 {
267     if (tp == 0)
268 	return (FALSE);
269     else if (tp->value == keycode)
270 	return (TRUE);
271     else
272 	return (has_key_internal(keycode, tp->child)
273 		|| has_key_internal(keycode, tp->sibling));
274 }
275 
276 #ifdef USE_TERM_DRIVER
277 NCURSES_EXPORT(int)
278 TINFO_HAS_KEY(SCREEN *sp, int keycode)
279 {
280     return IsValidTIScreen(sp) ?
281 	has_key_internal(keycode, sp->_keytry) : 0;
282 }
283 #else
284 NCURSES_EXPORT(int)
285 NCURSES_SP_NAME(has_key) (NCURSES_SP_DCLx int keycode)
286 {
287     T((T_CALLED("has_key(%p,%d)"), (void *) SP_PARM, keycode));
288     returnCode(SP != 0 ? has_key_internal(keycode, SP_PARM->_keytry) : FALSE);
289 }
290 
291 #if NCURSES_SP_FUNCS
292 NCURSES_EXPORT(int)
293 has_key(int keycode)
294 {
295     return NCURSES_SP_NAME(has_key) (CURRENT_SCREEN, keycode);
296 }
297 #endif
298 #endif
299 #endif /* NCURSES_EXT_FUNCS */
300 
301 NCURSES_EXPORT(int)
302 NCURSES_SP_NAME(_nc_putp_flush) (NCURSES_SP_DCLx
303 				 const char *name, const char *value)
304 {
305     int rc = NCURSES_PUTP2(name, value);
306     if (rc != ERR) {
307 	_nc_flush();
308     }
309     return rc;
310 }
311 
312 #if 0 && NCURSES_SP_FUNCS
313 NCURSES_EXPORT(int)
314 _nc_putp_flush(const char *name, const char *value)
315 {
316     return NCURSES_SP_NAME(_nc_putp_flush) (CURRENT_SCREEN, name, value);
317 }
318 #endif
319 
320 /* Turn the keypad on/off
321  *
322  * Note:  we flush the output because changing this mode causes some terminals
323  * to emit different escape sequences for cursor and keypad keys.  If we don't
324  * flush, then the next wgetch may get the escape sequence that corresponds to
325  * the terminal state _before_ switching modes.
326  */
327 NCURSES_EXPORT(int)
328 _nc_keypad(SCREEN *sp, int flag)
329 {
330     int rc = ERR;
331 
332     if (sp != 0) {
333 #ifdef USE_PTHREADS
334 	/*
335 	 * We might have this situation in a multithreaded application that
336 	 * has wgetch() reading in more than one thread.  putp() and below
337 	 * may use SP explicitly.
338 	 */
339 	if (_nc_use_pthreads && sp != CURRENT_SCREEN) {
340 	    SCREEN *save_sp;
341 
342 	    /* cannot use use_screen(), since that is not in tinfo library */
343 	    _nc_lock_global(curses);
344 	    save_sp = CURRENT_SCREEN;
345 	    _nc_set_screen(sp);
346 	    rc = _nc_keypad(sp, flag);
347 	    _nc_set_screen(save_sp);
348 	    _nc_unlock_global(curses);
349 	} else
350 #endif
351 	{
352 #ifdef USE_TERM_DRIVER
353 	    rc = CallDriver_1(sp, kpad, flag);
354 	    if (rc == OK)
355 		sp->_keypad_on = flag;
356 #else
357 	    if (flag) {
358 		(void) NCURSES_PUTP2_FLUSH("keypad_xmit", keypad_xmit);
359 	    } else if (!flag && keypad_local) {
360 		(void) NCURSES_PUTP2_FLUSH("keypad_local", keypad_local);
361 	    }
362 
363 	    if (flag && !sp->_tried) {
364 		_nc_init_keytry(sp);
365 		sp->_tried = TRUE;
366 	    }
367 	    sp->_keypad_on = flag;
368 	    rc = OK;
369 #endif
370 	}
371     }
372     return (rc);
373 }
374