release/src/router/libncurses/ncurses/tinfo/lib_options.c

   1 /****************************************************************************
   2  * Copyright (c) 1998-2013,2014 Free Software Foundation, Inc.              *
   3  *                                                                          *
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   5  * copy of this software and associated documentation files (the            *
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  10  * furnished to do so, subject to the following conditions:                 *
  11  *                                                                          *
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  14  *                                                                          *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
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  18  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
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  21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
  22  *                                                                          *
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  26  * authorization.                                                           *
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  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 1.78 2014/09/27 21:55:24 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         if (vis == cursor) {
 200             code = cursor;
 201         } else {
 202 #ifdef USE_TERM_DRIVER
 203             code = CallDriver_1(SP_PARM, td_cursorSet, vis);
 204 #else
 205             if (IsTermInfo(SP_PARM)) {
 206                 switch (vis) {
 207                 case 2:
 208                     code = NCURSES_PUTP2_FLUSH("cursor_visible",
 209                                                cursor_visible);
 210                     break;
 211                 case 1:
 212                     code = NCURSES_PUTP2_FLUSH("cursor_normal",
 213                                                cursor_normal);
 214                     break;
 215                 case 0:
 216                     code = NCURSES_PUTP2_FLUSH("cursor_invisible",
 217                                                cursor_invisible);
 218                     break;
 219                 }
 220             } else {
 221                 code = ERR;
 222             }
 223 #endif
 224             if (code != ERR)
 225                 code = (cursor == -1 ? 1 : cursor);
 226             SP_PARM->_cursor = vis;
 227         }
 228     }
 229     returnCode(code);
 230 }
 231
 232 #if NCURSES_SP_FUNCS
 233 NCURSES_EXPORT(int)
 234 curs_set(int vis)
 235 {
 236     return (NCURSES_SP_NAME(curs_set) (CURRENT_SCREEN, vis));
 237 }
 238 #endif
 239
 240 NCURSES_EXPORT(int)
 241 NCURSES_SP_NAME(typeahead) (NCURSES_SP_DCLx int fd)
 242 {
 243     T((T_CALLED("typeahead(%p, %d)"), (void *) SP_PARM, fd));
 244     if (IsValidTIScreen(SP_PARM)) {
 245         SP_PARM->_checkfd = fd;
 246         returnCode(OK);
 247     } else {
 248         returnCode(ERR);
 249     }
 250 }
 251
 252 #if NCURSES_SP_FUNCS
 253 NCURSES_EXPORT(int)
 254 typeahead(int fd)
 255 {
 256     return NCURSES_SP_NAME(typeahead) (CURRENT_SCREEN, fd);
 257 }
 258 #endif
 259
 260 /*
 261 **      has_key()
 262 **
 263 **      Return TRUE if the current terminal has the given key
 264 **
 265 */
 266
 267 #if NCURSES_EXT_FUNCS
 268 static int
 269 has_key_internal(int keycode, TRIES * tp)
 270 {
 271     if (tp == 0)
 272         return (FALSE);
 273     else if (tp->value == keycode)
 274         return (TRUE);
 275     else
 276         return (has_key_internal(keycode, tp->child)
 277                 || has_key_internal(keycode, tp->sibling));
 278 }
 279
 280 #ifdef USE_TERM_DRIVER
 281 NCURSES_EXPORT(int)
 282 TINFO_HAS_KEY(SCREEN *sp, int keycode)
 283 {
 284     return IsValidTIScreen(sp) ?
 285         has_key_internal(keycode, sp->_keytry) : 0;
 286 }
 287 #else
 288 NCURSES_EXPORT(int)
 289 NCURSES_SP_NAME(has_key) (NCURSES_SP_DCLx int keycode)
 290 {
 291     T((T_CALLED("has_key(%p,%d)"), (void *) SP_PARM, keycode));
 292     returnCode(SP != 0 ? has_key_internal(keycode, SP_PARM->_keytry) : FALSE);
 293 }
 294
 295 #if NCURSES_SP_FUNCS
 296 NCURSES_EXPORT(int)
 297 has_key(int keycode)
 298 {
 299     return NCURSES_SP_NAME(has_key) (CURRENT_SCREEN, keycode);
 300 }
 301 #endif
 302 #endif
 303 #endif /* NCURSES_EXT_FUNCS */
 304
 305 NCURSES_EXPORT(int)
 306 NCURSES_SP_NAME(_nc_putp_flush) (NCURSES_SP_DCLx
 307                                  const char *name, const char *value)
 308 {
 309     int rc = NCURSES_PUTP2(name, value);
 310     if (rc != ERR) {
 311         _nc_flush();
 312     }
 313     return rc;
 314 }
 315
 316 #if 0 && NCURSES_SP_FUNCS
 317 NCURSES_EXPORT(int)
 318 _nc_putp_flush(const char *name, const char *value)
 319 {
 320     return NCURSES_SP_NAME(_nc_putp_flush) (CURRENT_SCREEN, name, value);
 321 }
 322 #endif
 323
 324 /* Turn the keypad on/off
 325  *
 326  * Note:  we flush the output because changing this mode causes some terminals
 327  * to emit different escape sequences for cursor and keypad keys.  If we don't
 328  * flush, then the next wgetch may get the escape sequence that corresponds to
 329  * the terminal state _before_ switching modes.
 330  */
 331 NCURSES_EXPORT(int)
 332 _nc_keypad(SCREEN *sp, int flag)
 333 {
 334     int rc = ERR;
 335
 336     if (sp != 0) {
 337 #ifdef USE_PTHREADS
 338         /*
 339          * We might have this situation in a multithreaded application that
 340          * has wgetch() reading in more than one thread.  putp() and below
 341          * may use SP explicitly.
 342          */
 343         if (_nc_use_pthreads && sp != CURRENT_SCREEN) {
 344             SCREEN *save_sp;
 345
 346             /* cannot use use_screen(), since that is not in tinfo library */
 347             _nc_lock_global(curses);
 348             save_sp = CURRENT_SCREEN;
 349             _nc_set_screen(sp);
 350             rc = _nc_keypad(sp, flag);
 351             _nc_set_screen(save_sp);
 352             _nc_unlock_global(curses);
 353         } else
 354 #endif
 355         {
 356 #ifdef USE_TERM_DRIVER
 357             rc = CallDriver_1(sp, td_kpad, flag);
 358             if (rc == OK)
 359                 sp->_keypad_on = flag;
 360 #else
 361             if (flag) {
 362                 (void) NCURSES_PUTP2_FLUSH("keypad_xmit", keypad_xmit);
 363             } else if (!flag && keypad_local) {
 364                 (void) NCURSES_PUTP2_FLUSH("keypad_local", keypad_local);
 365             }
 366
 367             if (flag && !sp->_tried) {
 368                 _nc_init_keytry(sp);
 369                 sp->_tried = TRUE;
 370             }
 371             sp->_keypad_on = flag;
 372             rc = OK;
 373 #endif
 374         }
 375     }
 376     return (rc);
 377 }