1 /****************************************************************************
2  * Copyright 2018-2019,2020 Thomas E. Dickey                                *
3  * Copyright 1998-2017,2018 Free Software Foundation, Inc.                  *
4  *                                                                          *
5  * Permission is hereby granted, free of charge, to any person obtaining a  *
6  * copy of this software and associated documentation files (the            *
7  * "Software"), to deal in the Software without restriction, including      *
8  * without limitation the rights to use, copy, modify, merge, publish,      *
9  * distribute, distribute with modifications, sublicense, and/or sell       *
10  * copies of the Software, and to permit persons to whom the Software is    *
11  * furnished to do so, subject to the following conditions:                 *
12  *                                                                          *
13  * The above copyright notice and this permission notice shall be included  *
14  * in all copies or substantial portions of the Software.                   *
15  *                                                                          *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
19  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
22  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
23  *                                                                          *
24  * Except as contained in this notice, the name(s) of the above copyright   *
25  * holders shall not be used in advertising or otherwise to promote the     *
26  * sale, use or other dealings in this Software without prior written       *
27  * authorization.                                                           *
28  ****************************************************************************/
29 
30 /****************************************************************************
31  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
32  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
33  *     and: Thomas E. Dickey                        1996-on                 *
34  *     and: Juergen Pfeifer                                                 *
35  ****************************************************************************/
36 
37 /*
38  * $Id: curses.priv.h,v 1.628 2020/02/02 23:34:34 tom Exp $
39  *
40  *	curses.priv.h
41  *
42  *	Header file for curses library objects which are private to
43  *	the library.
44  *
45  */
46 
47 #ifndef CURSES_PRIV_H
48 #define CURSES_PRIV_H 1
49 /* *INDENT-OFF* */
50 
51 #include <ncurses_dll.h>
52 
53 #ifdef __cplusplus
54 extern "C" {
55 #endif
56 
57 #include <ncurses_cfg.h>
58 
59 #if USE_RCS_IDS
60 #define MODULE_ID(id) static const char Ident[] = id;
61 #else
62 #define MODULE_ID(id) /*nothing*/
63 #endif
64 
65 #include <stddef.h>		/* for offsetof */
66 #include <stdlib.h>
67 #include <string.h>
68 #include <sys/types.h>
69 #include <sys/stat.h>
70 
71 #if HAVE_UNISTD_H
72 #include <unistd.h>
73 #endif
74 
75 #if HAVE_SYS_BSDTYPES_H && !(defined(_WIN32) || defined(_WIN64))
76 #include <sys/bsdtypes.h>	/* needed for ISC */
77 #endif
78 
79 #if HAVE_LIMITS_H
80 # include <limits.h>
81 #elif HAVE_SYS_PARAM_H
82 # include <sys/param.h>
83 #endif
84 
85 #include <assert.h>
86 #include <stdio.h>
87 
88 #include <errno.h>
89 
90 #if defined __hpux
91 #  ifndef EILSEQ
92 #    define EILSEQ 47
93 #  endif
94 #endif
95 
96 #ifndef PATH_MAX
97 # if defined(_POSIX_PATH_MAX)
98 #  define PATH_MAX _POSIX_PATH_MAX
99 # elif defined(MAXPATHLEN)
100 #  define PATH_MAX MAXPATHLEN
101 # else
102 #  define PATH_MAX 255	/* the Posix minimum path-size */
103 # endif
104 #endif
105 
106 #if DECL_ERRNO
107 extern int errno;
108 #endif
109 
110 /* Some systems have a broken 'select()', but workable 'poll()'.  Use that */
111 #if HAVE_WORKING_POLL
112 #define USE_FUNC_POLL 1
113 #if HAVE_POLL_H
114 #include <poll.h>
115 #else
116 #include <sys/poll.h>
117 #endif
118 #else
119 #define USE_FUNC_POLL 0
120 #endif
121 
122 #if HAVE_INTTYPES_H
123 # include <inttypes.h>
124 #else
125 # if HAVE_STDINT_H
126 #  include <stdint.h>
127 # endif
128 #endif
129 
130 /* include signal.h before curses.h to work-around defect in glibc 2.1.3 */
131 #include <signal.h>
132 
133 /* Alessandro Rubini's GPM (general-purpose mouse) */
134 #if HAVE_LIBGPM && HAVE_GPM_H
135 #define USE_GPM_SUPPORT 1
136 #else
137 #define USE_GPM_SUPPORT 0
138 #endif
139 
140 /* QNX mouse support */
141 #if defined(__QNX__) && !defined(__QNXNTO__)
142 #define USE_QNX_MOUSE 1
143 #else
144 #define USE_QNX_MOUSE 0
145 #endif
146 
147 /* EMX mouse support */
148 #ifdef __EMX__
149 #define USE_EMX_MOUSE 1
150 #else
151 #define USE_EMX_MOUSE 0
152 #endif
153 
154 /* kLIBC keyboard/mouse support */
155 #if defined(__OS2__) && defined(__KLIBC__)
156 #define USE_KLIBC_KBD   1
157 #define USE_KLIBC_MOUSE 1
158 #else
159 #define USE_KLIBC_KBD   0
160 #define USE_KLIBC_MOUSE 0
161 #endif
162 
163 #define DEFAULT_MAXCLICK 166
164 #define EV_MAX		8	/* size of mouse circular event queue */
165 
166 /*
167  * If we don't have signals to support it, don't add a sigwinch handler.
168  * In any case, resizing is an extended feature.  Use it if we've got it.
169  */
170 #if !NCURSES_EXT_FUNCS
171 #undef HAVE_SIZECHANGE
172 #define HAVE_SIZECHANGE 0
173 #endif
174 
175 #if HAVE_SIZECHANGE && USE_SIGWINCH && defined(SIGWINCH)
176 #define USE_SIZECHANGE 1
177 #else
178 #define USE_SIZECHANGE 0
179 #undef USE_SIGWINCH
180 #define USE_SIGWINCH 0
181 #endif
182 
183 /*
184  * When building in the MSYS2 environment, the automatic discovery of
185  * the path separator in configure doesn't work properly. So, if building
186  * for MinGW, we enforce the correct Windows PATH separator
187  */
188 #ifdef _WIN32
189 #  ifdef NCURSES_PATHSEP
190 #    undef NCURSES_PATHSEP
191 #  endif
192 #  define NCURSES_PATHSEP ';'
193 #endif
194 
195 /*
196  * If desired, one can configure this, disabling environment variables that
197  * point to custom terminfo/termcap locations.
198  */
199 #ifdef USE_ROOT_ENVIRON
200 #define use_terminfo_vars() 1
201 #else
202 #define use_terminfo_vars() _nc_env_access()
203 extern NCURSES_EXPORT(int) _nc_env_access (void);
204 #endif
205 
206 /*
207  * Not all platforms have memmove; some have an equivalent bcopy.  (Some may
208  * have neither).
209  */
210 #if USE_OK_BCOPY
211 #define memmove(d,s,n) bcopy(s,d,n)
212 #elif USE_MY_MEMMOVE
213 #define memmove(d,s,n) _nc_memmove(d,s,n)
214 extern NCURSES_EXPORT(void *) _nc_memmove (void *, const void *, size_t);
215 #endif
216 
217 /*
218  * If we have va_copy(), use it for assigning va_list's.
219  */
220 #if defined(HAVE___VA_COPY)
221 #define begin_va_copy(dst,src)	__va_copy(dst, src)
222 #define end_va_copy(dst)	va_end(dst)
223 #elif defined(va_copy) || defined(HAVE_VA_COPY)
224 #define begin_va_copy(dst,src)	va_copy(dst, src)
225 #define end_va_copy(dst)	va_end(dst)
226 #else
227 #define begin_va_copy(dst,src) (dst) = (src)
228 #define end_va_copy(dst)	/* nothing */
229 #endif
230 
231 /*
232  * Either/both S_ISxxx and/or S_IFxxx are defined in sys/types.h; some systems
233  * lack one or the other.
234  */
235 #ifndef S_ISDIR
236 #define S_ISDIR(mode) ((mode & S_IFMT) == S_IFDIR)
237 #endif
238 
239 #ifndef S_ISREG
240 #define S_ISREG(mode) ((mode & S_IFMT) == S_IFREG)
241 #endif
242 
243 /*
244  * POSIX ignores the "b", which c89 specified.  Some very old systems do not
245  * accept it.
246  */
247 #if USE_FOPEN_BIN_R
248 #define BIN_R	"rb"
249 #define BIN_W	"wb"
250 #else
251 #define BIN_R	"r"
252 #define BIN_W	"w"
253 #endif
254 
255 /*
256  * Scroll hints are useless when hashmap is used
257  */
258 #if !USE_SCROLL_HINTS
259 #if !USE_HASHMAP
260 #define USE_SCROLL_HINTS 1
261 #else
262 #define USE_SCROLL_HINTS 0
263 #endif
264 #endif
265 
266 #if USE_SCROLL_HINTS
267 #define if_USE_SCROLL_HINTS(stmt) stmt
268 #else
269 #define if_USE_SCROLL_HINTS(stmt) /*nothing*/
270 #endif
271 
272 #include <nc_string.h>
273 
274 /*
275  * Options for terminal drivers, etc...
276  */
277 #ifdef USE_TERM_DRIVER
278 #define USE_SP_RIPOFF     1
279 #define USE_SP_TERMTYPE   1
280 #define USE_SP_WINDOWLIST 1
281 #endif
282 
283 /*
284  * Note:  ht/cbt expansion flakes out randomly under Linux 1.1.47, but only
285  * when we're throwing control codes at the screen at high volume.  To see
286  * this, re-enable USE_HARD_TABS and run worm for a while.  Other systems
287  * probably don't want to define this either due to uncertainties about tab
288  * delays and expansion in raw mode.
289  */
290 
291 #define TRIES struct tries
292 typedef TRIES {
293 	TRIES    *child;            /* ptr to child.  NULL if none          */
294 	TRIES    *sibling;          /* ptr to sibling.  NULL if none        */
295 	unsigned char    ch;        /* character at this node               */
296 	unsigned short   value;     /* code of string so far.  0 if none.   */
297 #undef TRIES
298 } TRIES;
299 
300 /*
301  * Common/troublesome character definitions
302  */
303 #define StringOf(ch) {ch, 0}
304 
305 #define L_BRACE '{'
306 #define R_BRACE '}'
307 #define S_QUOTE '\''
308 #define D_QUOTE '"'
309 
310 #define VT_ACSC "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~"
311 
312 /*
313  * Structure for palette tables
314  */
315 
316 #define MAXCOLUMNS    135
317 #define MAXLINES      66
318 #define FIFO_SIZE     MAXCOLUMNS+2  /* for nocbreak mode input */
319 
320 #define ACS_LEN       128
321 
322 #define WINDOWLIST struct _win_list
323 
324 #if USE_WIDEC_SUPPORT
325 #define _nc_bkgd    _bkgrnd
326 #else
327 #undef _XOPEN_SOURCE_EXTENDED
328 #undef _XPG5
329 #define _nc_bkgd    _bkgd
330 #define wgetbkgrnd(win, wch)	((*wch = win->_bkgd) != 0 ? OK : ERR)
331 #define wbkgrnd	    wbkgd
332 #endif
333 
334 #undef NCURSES_OPAQUE
335 #define NCURSES_INTERNALS 1
336 #define NCURSES_OPAQUE 0
337 
338 #include <curses.h>	/* we'll use -Ipath directive to get the right one! */
339 
340 typedef struct
341 {
342     int red, green, blue;	/* what color_content() returns */
343     int r, g, b;		/* params to init_color() */
344     int init;			/* true if we called init_color() */
345 }
346 color_t;
347 
348 typedef union {
349     struct {
350 	unsigned char red;
351 	unsigned char green;
352 	unsigned char blue;
353     } bits;			/* bits per color-value in RGB */
354     unsigned value;
355 } rgb_bits_t;
356 
357 /*
358  * If curses.h did not expose the SCREEN-functions, then we do not need the
359  * parameter in the corresponding unextended functions.
360  */
361 
362 #define USE_SP_FUNC_SUPPORT     NCURSES_SP_FUNCS
363 #define USE_EXT_SP_FUNC_SUPPORT (NCURSES_SP_FUNCS && NCURSES_EXT_FUNCS)
364 
365 #if NCURSES_SP_FUNCS
366 #define SP_PARM         sp	/* use parameter */
367 #define NCURSES_SP_ARG          SP_PARM
368 #define NCURSES_SP_DCL  SCREEN *NCURSES_SP_ARG
369 #define NCURSES_SP_DCL0 NCURSES_SP_DCL
370 #define NCURSES_SP_ARGx         NCURSES_SP_ARG,
371 #define NCURSES_SP_DCLx SCREEN *NCURSES_SP_ARGx
372 #else
373 #define SP_PARM         SP	/* use global variable */
374 #define NCURSES_SP_ARG
375 #define NCURSES_SP_DCL
376 #define NCURSES_SP_DCL0 void
377 #define NCURSES_SP_ARGx
378 #define NCURSES_SP_DCLx
379 #endif
380 
381 #include <nc_panel.h>
382 
383 #include <term.h>
384 #include <nc_termios.h>
385 
386 #define IsPreScreen(sp)      (((sp) != 0) && sp->_prescreen)
387 #define HasTerminal(sp)      (((sp) != 0) && (0 != ((sp)->_term)))
388 #define IsValidScreen(sp)    (HasTerminal(sp) && !IsPreScreen(sp))
389 
390 #if USE_REENTRANT
391 #define CurTerm              _nc_prescreen._cur_term
392 #else
393 #define CurTerm              cur_term
394 #endif
395 
396 #if NCURSES_SP_FUNCS
397 #define TerminalOf(sp)       ((sp) ? ((sp)->_term ? (sp)->_term : CurTerm) : CurTerm)
398 #else
399 #define TerminalOf(sp)       CurTerm
400 #endif
401 
402 /*
403  * The legacy layout for TERMTYPE uses "short" for all of the numbers.  Moving
404  * past that, numeric capabilities can be "int" by using a TERMTYPE2 structure
405  * in TERMINAL, and doing most of the internal work using TERMTYPE2.  There are
406  * a few places (mostly to expose the legacy layout) where the distinction
407  * needs attention.
408  */
409 #if NCURSES_EXT_COLORS && HAVE_INIT_EXTENDED_COLOR
410 #define NCURSES_EXT_NUMBERS  1
411 #define NCURSES_INT2         int
412 #define SIZEOF_INT2          4
413 #define TerminalType(tp)     (tp)->type2
414 #else
415 #define NCURSES_EXT_NUMBERS  0
416 #define NCURSES_INT2         short
417 #define SIZEOF_INT2          2
418 #define TerminalType(tp)     (tp)->type
419 #endif
420 
421 #define SIZEOF_SHORT         2
422 
423 #ifdef CUR
424 #undef CUR
425 #define CUR TerminalType(cur_term).
426 #endif
427 
428 /*
429  * Reduce dependency on cur_term global by using terminfo data from SCREEN's
430  * pointer to this data.
431  */
432 #ifdef USE_SP_TERMTYPE
433 #undef CUR
434 #endif
435 
436 #define SP_TERMTYPE TerminalType(TerminalOf(sp)).
437 
438 #include <term_entry.h>
439 
440 #include <nc_tparm.h>
441 
442 /*
443  * Simplify ifdef's for the "*_ATTR" macros in case italics are not configured.
444  */
445 #if defined(A_ITALIC) && defined(exit_italics_mode)
446 #define USE_ITALIC 1
447 #else
448 #define USE_ITALIC 0
449 #undef  A_ITALIC
450 #define A_ITALIC 0
451 #endif
452 
453 /*
454  * Use these macros internally, to make tracing less verbose.  But leave the
455  * option for compiling the tracing into the library.
456  */
457 #if 1
458 #define ColorPair(n)		(NCURSES_BITS(n, 0) & A_COLOR)
459 #define PairNumber(a)		(NCURSES_CAST(int,(((unsigned long)(a) & A_COLOR) >> NCURSES_ATTR_SHIFT)))
460 #else
461 #define ColorPair(pair)		COLOR_PAIR(pair)
462 #define PairNumber(attr)	PAIR_NUMBER(attr)
463 #endif
464 
465 #define unColor(n)		unColor2(AttrOf(n))
466 #define unColor2(a)		((a) & ALL_BUT_COLOR)
467 
468 /*
469  * Extended-colors stores the color pair in a separate struct-member than the
470  * attributes.  But for compatibility, we handle most cases where a program
471  * written for non-extended colors stores the color in the attributes by
472  * checking for a color pair in both places.
473  */
474 #if NCURSES_EXT_COLORS
475 #define if_EXT_COLORS(stmt)	stmt
476 #define SetPair(value,p)	SetPair2((value).ext_color, AttrOf(value), p)
477 #define SetPair2(c,a,p)		c = (p), \
478 				a = (unColor2(a) | ColorPair(oldColor(c)))
479 #define GetPair(value)		GetPair2((value).ext_color, AttrOf(value))
480 #define GetPair2(c,a)		((c) ? (c) : PairNumber(a))
481 #define oldColor(p)		(((p) > 255) ? 255 : (p))
482 #define GET_WINDOW_PAIR(w)	GetPair2((w)->_color, (w)->_attrs)
483 #define SET_WINDOW_PAIR(w,p)	(w)->_color = (p)
484 #define SameAttrOf(a,b)		(AttrOf(a) == AttrOf(b) && GetPair(a) == GetPair(b))
485 
486 #define VIDPUTS(sp,attr,pair)	do { \
487 				    int vid_pair = pair; \
488 				    NCURSES_SP_NAME(vid_puts)( \
489 					NCURSES_SP_ARGx attr, \
490 					(NCURSES_PAIRS_T) pair, \
491 					&vid_pair, \
492 					NCURSES_OUTC_FUNC); \
493 				} while (0)
494 
495 #else /* !NCURSES_EXT_COLORS */
496 
497 #define if_EXT_COLORS(stmt)	/* nothing */
498 #define SetPair(value,p)	RemAttr(value, A_COLOR), \
499 				SetAttr(value, AttrOf(value) | ColorPair(p))
500 #define GetPair(value)		PairNumber(AttrOf(value))
501 #define GET_WINDOW_PAIR(w)	PairNumber(WINDOW_ATTRS(w))
502 #define SET_WINDOW_PAIR(w,p)	WINDOW_ATTRS(w) &= ALL_BUT_COLOR, \
503 				WINDOW_ATTRS(w) |= ColorPair(p)
504 #define SameAttrOf(a,b)		(AttrOf(a) == AttrOf(b))
505 
506 #define VIDPUTS(sp,attr,pair)	NCURSES_SP_NAME(vidputs)(NCURSES_SP_ARGx attr, NCURSES_OUTC_FUNC)
507 
508 #endif /* NCURSES_EXT_COLORS */
509 
510 #define NCURSES_OUTC_FUNC       NCURSES_SP_NAME(_nc_outch)
511 #define NCURSES_PUTP2(name,value)    NCURSES_SP_NAME(_nc_putp)(NCURSES_SP_ARGx name, value)
512 #define NCURSES_PUTP2_FLUSH(name,value)    NCURSES_SP_NAME(_nc_putp_flush)(NCURSES_SP_ARGx name, value)
513 
514 #if NCURSES_NO_PADDING
515 #define GetNoPadding(sp)	((sp) ? (sp)->_no_padding : _nc_prescreen._no_padding)
516 #define SetNoPadding(sp)	_nc_set_no_padding(sp)
517 extern NCURSES_EXPORT(void)     _nc_set_no_padding(SCREEN *);
518 #else
519 #define GetNoPadding(sp)	FALSE
520 #define SetNoPadding(sp)	/*nothing*/
521 #endif
522 
523 #define WINDOW_ATTRS(w)		((w)->_attrs)
524 
525 #define SCREEN_ATTRS(s)		(*((s)->_current_attr))
526 #define GET_SCREEN_PAIR(s)	GetPair(SCREEN_ATTRS(s))
527 #define SET_SCREEN_PAIR(s,p)	SetPair(SCREEN_ATTRS(s), p)
528 
529 #if USE_REENTRANT || NCURSES_SP_FUNCS
530 NCURSES_EXPORT(int *)        _nc_ptr_Lines (SCREEN *);
531 NCURSES_EXPORT(int *)        _nc_ptr_Cols (SCREEN *);
532 NCURSES_EXPORT(int *)        _nc_ptr_Tabsize (SCREEN *);
533 NCURSES_EXPORT(int *)        _nc_ptr_Escdelay (SCREEN *);
534 #endif
535 
536 #if USE_REENTRANT
537 
538 #define ptrLines(sp)         (sp ? &(sp->_LINES) : &(_nc_prescreen._LINES))
539 #define ptrCols(sp)          (sp ? &(sp->_COLS) : &(_nc_prescreen._COLS))
540 #define ptrTabsize(sp)       (sp ? &(sp->_TABSIZE) : &(_nc_prescreen._TABSIZE))
541 #define ptrEscdelay(sp)      (sp ? &(sp->_ESCDELAY) : &(_nc_prescreen._ESCDELAY))
542 
543 #define SET_LINES(value)     *_nc_ptr_Lines(SP_PARM) = value
544 #define SET_COLS(value)      *_nc_ptr_Cols(SP_PARM) = value
545 #define SET_TABSIZE(value)   *_nc_ptr_Tabsize(SP_PARM) = value
546 #define SET_ESCDELAY(value)  *_nc_ptr_Escdelay(SP_PARM) = value
547 
548 #else
549 
550 #define ptrLines(sp)         &LINES
551 #define ptrCols(sp)          &COLS
552 #define ptrTabsize(sp)       &TABSIZE
553 #define ptrEscdelay(sp)      &ESCDELAY
554 
555 #define SET_LINES(value)     LINES = value
556 #define SET_COLS(value)      COLS = value
557 #define SET_TABSIZE(value)   TABSIZE = value
558 #define SET_ESCDELAY(value)  ESCDELAY = value
559 
560 #endif
561 
562 #define HasHardTabs()	(NonEmpty(clear_all_tabs) && NonEmpty(set_tab))
563 
564 #define TR_MUTEX(data) _tracef("%s@%d: me:%08lX COUNT:%2u/%2d/%6d/%2d/%s%9u: " #data, \
565 	    __FILE__, __LINE__, \
566 	    (unsigned long) (pthread_self()), \
567 	    data.__data.__lock, \
568 	    data.__data.__count, \
569 	    data.__data.__owner, \
570 	    data.__data.__kind, \
571 	    (data.__data.__nusers > 5) ? " OOPS " : "", \
572 	    data.__data.__nusers)
573 #define TR_GLOBAL_MUTEX(name) TR_MUTEX(_nc_globals.mutex_##name)
574 
575 #if USE_WEAK_SYMBOLS
576 #if defined(__GNUC__)
577 #  if defined __USE_ISOC99
578 #    define _cat_pragma(exp)	_Pragma(#exp)
579 #    define _weak_pragma(exp)	_cat_pragma(weak name)
580 #  else
581 #    define _weak_pragma(exp)
582 #  endif
583 #  define _declare(name)	__extension__ extern __typeof__(name) name
584 #  define weak_symbol(name)	_weak_pragma(name) _declare(name) __attribute__((weak))
585 #else
586 #  undef USE_WEAK_SYMBOLS
587 #  define USE_WEAK_SYMBOLS 0
588 #endif
589 #endif
590 
591 #ifdef USE_PTHREADS
592 
593 #if USE_REENTRANT
594 #include <pthread.h>
595 extern NCURSES_EXPORT(void) _nc_init_pthreads(void);
596 extern NCURSES_EXPORT(void) _nc_mutex_init(pthread_mutex_t *);
597 extern NCURSES_EXPORT(int) _nc_mutex_lock(pthread_mutex_t *);
598 extern NCURSES_EXPORT(int) _nc_mutex_trylock(pthread_mutex_t *);
599 extern NCURSES_EXPORT(int) _nc_mutex_unlock(pthread_mutex_t *);
600 #define _nc_lock_global(name)	_nc_mutex_lock(&_nc_globals.mutex_##name)
601 #define _nc_try_global(name)    _nc_mutex_trylock(&_nc_globals.mutex_##name)
602 #define _nc_unlock_global(name)	_nc_mutex_unlock(&_nc_globals.mutex_##name)
603 
604 #else
605 #error POSIX threads requires --enable-reentrant option
606 #endif
607 
608 #ifdef USE_PTHREADS
609 #  if USE_WEAK_SYMBOLS
610 weak_symbol(pthread_sigmask);
611 weak_symbol(pthread_kill);
612 weak_symbol(pthread_self);
613 weak_symbol(pthread_equal);
614 weak_symbol(pthread_mutex_init);
615 weak_symbol(pthread_mutex_lock);
616 weak_symbol(pthread_mutex_unlock);
617 weak_symbol(pthread_mutex_trylock);
618 weak_symbol(pthread_mutexattr_settype);
619 weak_symbol(pthread_mutexattr_init);
620 extern NCURSES_EXPORT(int) _nc_sigprocmask(int, const sigset_t *, sigset_t *);
621 #    undef  sigprocmask
622 #    define sigprocmask(a, b, c) _nc_sigprocmask(a, b, c)
623 #    define GetThreadID() (((pthread_self)) ? pthread_self() : (pthread_t) getpid())
624 #  else
625 #    define GetThreadID() pthread_self()
626 #  endif
627 #endif
628 
629 #if HAVE_NANOSLEEP
630 #undef HAVE_NANOSLEEP
631 #define HAVE_NANOSLEEP 0	/* nanosleep suspends all threads */
632 #endif
633 
634 #else /* !USE_PTHREADS */
635 
636 #if USE_PTHREADS_EINTR
637 #  if USE_WEAK_SYMBOLS
638 #include <pthread.h>
639 weak_symbol(pthread_sigmask);
640 weak_symbol(pthread_kill);
641 weak_symbol(pthread_self);
642 weak_symbol(pthread_equal);
643 extern NCURSES_EXPORT(int) _nc_sigprocmask(int, const sigset_t *, sigset_t *);
644 #    undef  sigprocmask
645 #    define sigprocmask(a, b, c) _nc_sigprocmask(a, b, c)
646 #  endif
647 #endif /* USE_PTHREADS_EINTR */
648 
649 #define _nc_init_pthreads()	/* nothing */
650 #define _nc_mutex_init(obj)	/* nothing */
651 
652 #define _nc_lock_global(name)	/* nothing */
653 #define _nc_try_global(name)    0
654 #define _nc_unlock_global(name)	/* nothing */
655 
656 #endif /* USE_PTHREADS */
657 
658 /*
659  * When using sp-funcs, locks are targeted to SCREEN-level granularity.
660  * So the locking is done in the non-sp-func (which calls the sp-func) rather
661  * than in the sp-func itself.
662  *
663  * Use the _nc_nonsp_XXX functions in the function using "NCURSES_SP_NAME()".
664  * Use the _nc_sp_XXX functions in the function using "#if NCURSES_SP_FUNCS".
665  */
666 #if NCURSES_SP_FUNCS
667 
668 #define _nc_nonsp_lock_global(name)	/* nothing */
669 #define _nc_nonsp_try_global(name)    0
670 #define _nc_nonsp_unlock_global(name)	/* nothing */
671 
672 #define _nc_sp_lock_global(name)	_nc_lock_global(name)
673 #define _nc_sp_try_global(name)         _nc_try_global(name)
674 #define _nc_sp_unlock_global(name)	_nc_unlock_global(name)
675 
676 #else
677 
678 #define _nc_nonsp_lock_global(name)	_nc_lock_global(name)
679 #define _nc_nonsp_try_global(name)      _nc_try_global(name)
680 #define _nc_nonsp_unlock_global(name)	_nc_unlock_global(name)
681 
682 #define _nc_sp_lock_global(name)	/* nothing */
683 #define _nc_sp_try_global(name)    0
684 #define _nc_sp_unlock_global(name)	/* nothing */
685 
686 #endif
687 
688 #if HAVE_GETTIMEOFDAY
689 # define PRECISE_GETTIME 1
690 # define TimeType struct timeval
691 #else
692 # define PRECISE_GETTIME 0
693 # define TimeType time_t
694 #endif
695 
696 /*
697  * Definitions for color pairs
698  */
699 
700 #define MAX_OF_TYPE(t)   (int)(((unsigned t)(~0))>>1)
701 
702 #include <new_pair.h>
703 
704 #define isDefaultColor(c)	((c) < 0)
705 #define COLOR_DEFAULT		-1
706 
707 #if defined(USE_BUILD_CC) || (defined(USE_TERMLIB) && !defined(NEED_NCURSES_CH_T))
708 
709 #undef NCURSES_CH_T		/* this is not a termlib feature */
710 #define NCURSES_CH_T void	/* ...but we need a pointer in SCREEN */
711 
712 #endif	/* USE_TERMLIB */
713 
714 #ifndef USE_TERMLIB
715 struct ldat
716 {
717 	NCURSES_CH_T	*text;		/* text of the line */
718 	NCURSES_SIZE_T	firstchar;	/* first changed character in the line */
719 	NCURSES_SIZE_T	lastchar;	/* last changed character in the line */
720 	NCURSES_SIZE_T	oldindex;	/* index of the line at last update */
721 };
722 #endif	/* USE_TERMLIB */
723 
724 typedef enum {
725 	M_XTERM	= -1		/* use xterm's mouse tracking? */
726 	,M_NONE = 0		/* no mouse device */
727 #if USE_GPM_SUPPORT
728 	,M_GPM			/* use GPM */
729 #endif
730 #if USE_SYSMOUSE
731 	,M_SYSMOUSE		/* FreeBSD sysmouse on console */
732 #endif
733 #ifdef USE_TERM_DRIVER
734 	,M_TERM_DRIVER		/* Win32 console, etc */
735 #endif
736 } MouseType;
737 
738 typedef enum {
739     	MF_X10 = 0		/* conventional 3-byte format */
740 	, MF_SGR1006		/* xterm private mode 1006, SGR-style */
741 #ifdef EXP_XTERM_1005
742 	, MF_XTERM_1005		/* xterm UTF-8 private mode 1005 */
743 #endif
744 } MouseFormat;
745 
746 /*
747  * Structures for scrolling.
748  */
749 
750 typedef struct {
751 	unsigned long hashval;
752 	int oldcount, newcount;
753 	int oldindex, newindex;
754 } HASHMAP;
755 
756 /*
757  * Structures for soft labels.
758  */
759 
760 struct _SLK;
761 
762 #if !(defined(USE_TERMLIB) || defined(USE_BUILD_CC))
763 
764 typedef struct
765 {
766 	char *ent_text;		/* text for the label */
767 	char *form_text;	/* formatted text (left/center/...) */
768 	int ent_x;		/* x coordinate of this field */
769 	char dirty;		/* this label has changed */
770 	char visible;		/* field is visible */
771 } slk_ent;
772 
773 typedef struct _SLK {
774 	bool    dirty;		/* all labels have changed */
775 	bool    hidden;		/* soft labels are hidden */
776 	WINDOW  *win;
777 	slk_ent *ent;
778 	short   maxlab;		/* number of available labels */
779 	short   labcnt;		/* number of allocated labels */
780 	short   maxlen;		/* length of labels */
781 	NCURSES_CH_T attr;	/* soft label attribute */
782 } SLK;
783 
784 #endif	/* USE_TERMLIB */
785 
786 typedef	struct {
787 	WINDOW *win;		/* the window used in the hook      */
788 	int	line;		/* lines to take, < 0 => from bottom*/
789 	int	(*hook)(WINDOW *, int); /* callback for user	    */
790 } ripoff_t;
791 
792 #if USE_GPM_SUPPORT
793 #undef buttons			/* term.h defines this, and gpm uses it! */
794 #include <gpm.h>
795 #if USE_WEAK_SYMBOLS
796 weak_symbol(Gpm_Wgetch);
797 #endif
798 
799 #ifdef HAVE_LIBDL
800 /* link dynamically to GPM */
801 typedef int *TYPE_gpm_fd;
802 typedef int (*TYPE_Gpm_Open) (Gpm_Connect *, int);
803 typedef int (*TYPE_Gpm_Close) (void);
804 typedef int (*TYPE_Gpm_GetEvent) (Gpm_Event *);
805 
806 #define my_gpm_fd       SP_PARM->_mouse_gpm_fd
807 #define my_Gpm_Open     SP_PARM->_mouse_Gpm_Open
808 #define my_Gpm_Close    SP_PARM->_mouse_Gpm_Close
809 #define my_Gpm_GetEvent SP_PARM->_mouse_Gpm_GetEvent
810 #else
811 /* link statically to GPM */
812 #define my_gpm_fd       &gpm_fd
813 #define my_Gpm_Open     Gpm_Open
814 #define my_Gpm_Close    Gpm_Close
815 #define my_Gpm_GetEvent Gpm_GetEvent
816 #endif /* HAVE_LIBDL */
817 #endif /* USE_GPM_SUPPORT */
818 
819 typedef struct {
820     long sequence;
821     bool last_used;
822     char *fix_sgr0;		/* this holds the filtered sgr0 string */
823     char *last_bufp;		/* help with fix_sgr0 leak */
824     TERMINAL *last_term;
825 } TGETENT_CACHE;
826 
827 #define TGETENT_MAX 4
828 
829 /*
830  * When converting from terminfo to termcap, check for cases where we can trim
831  * octal escapes down to 2-character form.  It is useful for terminfo format
832  * also, but not as important.
833  */
834 #define MAX_TC_FIXUPS	10
835 #define MIN_TC_FIXUPS	4
836 
837 #define isoctal(c) ((c) >= '0' && (c) <= '7')
838 
839 /*
840  * State of tparm().
841  */
842 #define STACKSIZE 20
843 
844 typedef struct {
845 	union {
846 		int	num;
847 		char	*str;
848 	} data;
849 	bool num_type;
850 } STACK_FRAME;
851 
852 #define NUM_VARS 26
853 
854 typedef struct {
855 	const char	*tparam_base;
856 
857 	STACK_FRAME	stack[STACKSIZE];
858 	int		stack_ptr;
859 
860 	char		*out_buff;
861 	size_t		out_size;
862 	size_t		out_used;
863 
864 	char		*fmt_buff;
865 	size_t		fmt_size;
866 
867 	int		dynamic_var[NUM_VARS];
868 	int		static_vars[NUM_VARS];
869 #ifdef TRACE
870 	const char	*tname;
871 #endif
872 } TPARM_STATE;
873 
874 typedef struct {
875     char *text;
876     size_t size;
877 } TRACEBUF;
878 
879 /*
880  * The filesystem database normally uses a single-letter for the lower level
881  * of directories.  Use a hexadecimal code for filesystems which do not
882  * preserve mixed-case names.
883  */
884 #if MIXEDCASE_FILENAMES
885 #define LEAF_FMT "%c"
886 #define LEAF_LEN 1
887 #else
888 #define LEAF_FMT "%02x"
889 #define LEAF_LEN 2
890 #endif
891 
892 /*
893  * TRACEMSE_FMT is no longer than 80 columns, there are 5 numbers that
894  * could at most have 10 digits, and the mask contains no more than 32 bits
895  * with each bit representing less than 15 characters.  Usually the whole
896  * string is less than 80 columns, but this buffer size is an absolute
897  * limit.
898  */
899 #define TRACEMSE_MAX	(80 + (5 * 10) + (32 * 15))
900 #define TRACEMSE_FMT	"id %2d  at (%2d, %2d, %2d) state %4lx = {" /* } */
901 
902 #ifdef USE_TERM_DRIVER
903 struct DriverTCB; /* Terminal Control Block forward declaration */
904 #define INIT_TERM_DRIVER()	_nc_globals.term_driver = _nc_get_driver
905 #else
906 #define INIT_TERM_DRIVER()	/* nothing */
907 #endif
908 
909 typedef struct {
910     const char *name;
911     char *value;
912 } ITERATOR_VARS;
913 
914 /*
915  * Global data which is not specific to a screen.
916  */
917 typedef struct {
918 	SIG_ATOMIC_T	have_sigtstp;
919 	SIG_ATOMIC_T	have_sigwinch;
920 	SIG_ATOMIC_T	cleanup_nested;
921 
922 	bool		init_signals;
923 	bool		init_screen;
924 
925 	char		*comp_sourcename;
926 	char		*comp_termtype;
927 
928 	bool		have_tic_directory;
929 	bool		keep_tic_directory;
930 	const char	*tic_directory;
931 
932 	char		*dbi_list;
933 	int		dbi_size;
934 
935 	char		*first_name;
936 	char		**keyname_table;
937 	int		init_keyname;
938 
939 	int		slk_format;
940 
941 	int		getstr_limit;	/* getstr_limit based on POSIX LINE_MAX */
942 
943 	char		*safeprint_buf;
944 	size_t		safeprint_used;
945 
946 	TGETENT_CACHE	tgetent_cache[TGETENT_MAX];
947 	int		tgetent_index;
948 	long		tgetent_sequence;
949 
950 	char		*dbd_blob;	/* string-heap for dbd_list[] */
951 	char		**dbd_list;	/* distinct places to look for data */
952 	int		dbd_size;	/* length of dbd_list[] */
953 	time_t		dbd_time;	/* cache last updated */
954 	ITERATOR_VARS	dbd_vars[dbdLAST];
955 
956 #ifdef USE_TERM_DRIVER
957 	int		(*term_driver)(struct DriverTCB*, const char*, int*);
958 #endif
959 
960 #ifndef USE_SP_WINDOWLIST
961 	WINDOWLIST	*_nc_windowlist;
962 #define WindowList(sp)	_nc_globals._nc_windowlist
963 #endif
964 
965 #if USE_HOME_TERMINFO
966 	char		*home_terminfo;
967 #endif
968 
969 #if !USE_SAFE_SPRINTF
970 	int		safeprint_cols;
971 	int		safeprint_rows;
972 #endif
973 
974 #ifdef USE_PTHREADS
975 	pthread_mutex_t	mutex_curses;
976 	pthread_mutex_t	mutex_prescreen;
977 	pthread_mutex_t	mutex_screen;
978 	pthread_mutex_t	mutex_update;
979 	pthread_mutex_t	mutex_tst_tracef;
980 	pthread_mutex_t	mutex_tracef;
981 	int		nested_tracef;
982 	int		use_pthreads;
983 #define _nc_use_pthreads	_nc_globals.use_pthreads
984 #if USE_PTHREADS_EINTR
985 	pthread_t	read_thread;		/* The reading thread */
986 #endif
987 #endif
988 #if USE_WIDEC_SUPPORT
989 	char		key_name[MB_LEN_MAX + 1];
990 #endif
991 
992 #ifdef TRACE
993 	bool		trace_opened;
994 	char		trace_fname[PATH_MAX];
995 	int		trace_level;
996 	FILE		*trace_fp;
997 	int		trace_fd;
998 
999 	char		*tracearg_buf;
1000 	size_t		tracearg_used;
1001 
1002 	TRACEBUF	*tracebuf_ptr;
1003 	size_t		tracebuf_used;
1004 
1005 	char		tracechr_buf[40];
1006 
1007 	char		*tracedmp_buf;
1008 	size_t		tracedmp_used;
1009 
1010 	unsigned char	*tracetry_buf;
1011 	size_t		tracetry_used;
1012 
1013 	char		traceatr_color_buf[2][80];
1014 	int		traceatr_color_sel;
1015 	int		traceatr_color_last;
1016 #if !defined(USE_PTHREADS) && USE_REENTRANT
1017 	int		nested_tracef;
1018 #endif
1019 #endif	/* TRACE */
1020 
1021 #if NO_LEAKS
1022 	bool		leak_checking;
1023 #endif
1024 } NCURSES_GLOBALS;
1025 
1026 extern NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals;
1027 
1028 #define N_RIPS 5
1029 
1030 /* The limit reserves one byte for a terminating NUL */
1031 #define my_getstr_limit	(_nc_globals.getstr_limit - 1)
1032 #define _nc_getstr_limit(n) \
1033 	(((n) < 0) \
1034 	 ? my_getstr_limit \
1035 	 : (((n) > my_getstr_limit) \
1036 	    ? my_getstr_limit \
1037 	    : (n)))
1038 
1039 #ifdef USE_PTHREADS
1040 typedef struct _prescreen_list {
1041 	struct _prescreen_list *next;
1042 	pthread_t id;
1043 	struct screen *sp;
1044 } PRESCREEN_LIST;
1045 #endif
1046 
1047 /*
1048  * Global data which can be swept up into a SCREEN when one is created.
1049  * It may be modified before the next SCREEN is created.
1050  */
1051 typedef struct {
1052 #ifdef USE_PTHREADS
1053 	PRESCREEN_LIST *allocated;
1054 #else
1055 	struct screen * allocated;
1056 #endif
1057 	bool		use_env;
1058 	bool		filter_mode;
1059 	attr_t		previous_attr;
1060 	TPARM_STATE	tparm_state;
1061 	TTY		*saved_tty;	/* savetty/resetty information	    */
1062 	bool		use_tioctl;
1063 	NCURSES_SP_OUTC	_outch;		/* output handler if not putc */
1064 #ifndef USE_SP_RIPOFF
1065 	ripoff_t	rippedoff[N_RIPS];
1066 	ripoff_t	*rsp;
1067 #endif
1068 #if NCURSES_NO_PADDING
1069 	bool		_no_padding;	/* flag to set if padding disabled  */
1070 #endif
1071 #if BROKEN_LINKER || USE_REENTRANT
1072 	chtype		*real_acs_map;
1073 	int		_LINES;
1074 	int		_COLS;
1075 	int		_TABSIZE;
1076 	int		_ESCDELAY;
1077 	TERMINAL	*_cur_term;
1078 #endif
1079 #ifdef TRACE
1080 #if BROKEN_LINKER || USE_REENTRANT
1081 	long		_outchars;
1082 	const char	*_tputs_trace;
1083 #endif
1084 #endif
1085 } NCURSES_PRESCREEN;
1086 
1087 /*
1088  * Use screen-specific ripoff data (for softkeys) rather than global.
1089  */
1090 #ifdef USE_SP_RIPOFF
1091 #define safe_ripoff_sp     (sp)->rsp
1092 #define safe_ripoff_stack  (sp)->rippedoff
1093 #else
1094 #define safe_ripoff_sp	   _nc_prescreen.rsp
1095 #define safe_ripoff_stack  _nc_prescreen.rippedoff
1096 #endif
1097 
1098 extern NCURSES_EXPORT_VAR(NCURSES_PRESCREEN) _nc_prescreen;
1099 
1100 typedef enum {
1101     ewInitial = 0,
1102     ewRunning,
1103     ewSuspend
1104 } ENDWIN;
1105 
1106 /*
1107  * The SCREEN structure.
1108  */
1109 
1110 struct screen {
1111 	int		_ifd;		/* input file descriptor for screen */
1112 	int		_ofd;		/* output file descriptor for screen */
1113 	FILE		*_ofp;		/* output file ptr for screen	    */
1114 	char		*out_buffer;	/* output buffer		    */
1115 	size_t		out_limit;	/* output buffer size		    */
1116 	size_t		out_inuse;	/* output buffer current use	    */
1117 	bool		_filtered;	/* filter() was called		    */
1118 	bool		_prescreen;	/* is in prescreen phase	    */
1119 	bool		_use_env;	/* LINES & COLS from environment?   */
1120 	int		_checkfd;	/* filedesc for typeahead check	    */
1121 	TERMINAL	*_term;		/* terminal type information	    */
1122 	TTY		_saved_tty;	/* savetty/resetty information	    */
1123 	NCURSES_SIZE_T	_lines;		/* screen lines			    */
1124 	NCURSES_SIZE_T	_columns;	/* screen columns		    */
1125 
1126 	NCURSES_SIZE_T	_lines_avail;	/* lines available for stdscr	    */
1127 	NCURSES_SIZE_T	_topstolen;	/* lines stolen from top	    */
1128 
1129 	WINDOW		*_curscr;	/* current screen		    */
1130 	WINDOW		*_newscr;	/* virtual screen to be updated to  */
1131 	WINDOW		*_stdscr;	/* screen's full-window context	    */
1132 
1133 #define CurScreen(sp)  (sp)->_curscr
1134 #define NewScreen(sp)  (sp)->_newscr
1135 #define StdScreen(sp)  (sp)->_stdscr
1136 
1137 	TRIES		*_keytry;	/* "Try" for use with keypad mode   */
1138 	TRIES		*_key_ok;	/* Disabled keys via keyok(,FALSE)  */
1139 	bool		_tried;		/* keypad mode was initialized	    */
1140 	bool		_keypad_on;	/* keypad mode is currently on	    */
1141 
1142 	bool		_called_wgetch;	/* check for recursion in wgetch()  */
1143 	int		_fifo[FIFO_SIZE];	/* input push-back buffer   */
1144 	short		_fifohead,	/* head of fifo queue		    */
1145 			_fifotail,	/* tail of fifo queue		    */
1146 			_fifopeek,	/* where to peek for next char	    */
1147 			_fifohold;	/* set if breakout marked	    */
1148 
1149 	int		_endwin;	/* are we out of window mode?	    */
1150 	NCURSES_CH_T	*_current_attr; /* holds current attributes set	    */
1151 	int		_coloron;	/* is color enabled?		    */
1152 	int		_color_defs;	/* are colors modified		    */
1153 	int		_cursor;	/* visibility of the cursor	    */
1154 	int		_cursrow;	/* physical cursor row		    */
1155 	int		_curscol;	/* physical cursor column	    */
1156 	bool		_notty;		/* true if we cannot switch non-tty */
1157 	int		_nl;		/* True if NL -> CR/NL is on	    */
1158 	int		_raw;		/* True if in raw mode		    */
1159 	int		_cbreak;	/* 1 if in cbreak mode		    */
1160 					/* > 1 if in halfdelay mode	    */
1161 	int		_echo;		/* True if echo on		    */
1162 	int		_use_meta;	/* use the meta key?		    */
1163 	struct _SLK	*_slk;		/* ptr to soft key struct / NULL    */
1164 	int		slk_format;	/* selected format for this screen  */
1165 	/* cursor movement costs; units are 10ths of milliseconds */
1166 	int		_char_padding;	/* cost of character put	    */
1167 	int		_cr_cost;	/* cost of (carriage_return)	    */
1168 	int		_cup_cost;	/* cost of (cursor_address)	    */
1169 	int		_home_cost;	/* cost of (cursor_home)	    */
1170 	int		_ll_cost;	/* cost of (cursor_to_ll)	    */
1171 	int		_cub1_cost;	/* cost of (cursor_left)	    */
1172 	int		_cuf1_cost;	/* cost of (cursor_right)	    */
1173 	int		_cud1_cost;	/* cost of (cursor_down)	    */
1174 	int		_cuu1_cost;	/* cost of (cursor_up)		    */
1175 	int		_cub_cost;	/* cost of (parm_cursor_left)	    */
1176 	int		_cuf_cost;	/* cost of (parm_cursor_right)	    */
1177 	int		_cud_cost;	/* cost of (parm_cursor_down)	    */
1178 	int		_cuu_cost;	/* cost of (parm_cursor_up)	    */
1179 	int		_hpa_cost;	/* cost of (column_address)	    */
1180 	int		_vpa_cost;	/* cost of (row_address)	    */
1181 	/* used in tty_update.c, must be chars */
1182 	int		_ed_cost;	/* cost of (clr_eos)		    */
1183 	int		_el_cost;	/* cost of (clr_eol)		    */
1184 	int		_el1_cost;	/* cost of (clr_bol)		    */
1185 	int		_dch1_cost;	/* cost of (delete_character)	    */
1186 	int		_ich1_cost;	/* cost of (insert_character)	    */
1187 	int		_dch_cost;	/* cost of (parm_dch)		    */
1188 	int		_ich_cost;	/* cost of (parm_ich)		    */
1189 	int		_ech_cost;	/* cost of (erase_chars)	    */
1190 	int		_rep_cost;	/* cost of (repeat_char)	    */
1191 	int		_hpa_ch_cost;	/* cost of (column_address)	    */
1192 	int		_cup_ch_cost;	/* cost of (cursor_address)	    */
1193 	int		_cuf_ch_cost;	/* cost of (parm_cursor_right)	    */
1194 	int		_inline_cost;	/* cost of inline-move		    */
1195 	int		_smir_cost;	/* cost of (enter_insert_mode)	    */
1196 	int		_rmir_cost;	/* cost of (exit_insert_mode)	    */
1197 	int		_ip_cost;	/* cost of (insert_padding)	    */
1198 	/* used in lib_mvcur.c */
1199 	char *		_address_cursor;
1200 	/* used in tty_update.c */
1201 	int		_scrolling;	/* 1 if terminal's smart enough to  */
1202 
1203 	/* used in lib_color.c */
1204 	rgb_bits_t	_direct_color;	/* RGB overrides color-table	     */
1205 	color_t		*_color_table;	/* screen's color palette	     */
1206 	int		_color_count;	/* count of colors in palette	     */
1207 	colorpair_t	*_color_pairs;	/* screen's color pair list	     */
1208 	int		_pair_count;	/* same as COLOR_PAIRS               */
1209 	int		_pair_limit;	/* actual limit of color-pairs       */
1210 	int		_pair_alloc;	/* current table-size of color-pairs */
1211 	chtype		_ok_attributes; /* valid attributes for terminal     */
1212 	chtype		_xmc_suppress;	/* attributes to suppress if xmc     */
1213 	chtype		_xmc_triggers;	/* attributes to process if xmc	     */
1214 	chtype *	_acs_map;	/* the real alternate-charset map    */
1215 	bool *		_screen_acs_map;
1216 
1217 
1218 	/* used in lib_vidattr.c */
1219 	bool		_use_rmso;	/* true if we may use 'rmso'	     */
1220 	bool		_use_rmul;	/* true if we may use 'rmul'	     */
1221 
1222 	/*
1223 	 * These data correspond to the state of the idcok() and idlok()
1224 	 * functions.  A caveat is in order here:  the XSI and SVr4
1225 	 * documentation specify that these functions apply to the window which
1226 	 * is given as an argument.  However, ncurses implements this logic
1227 	 * only for the newscr/curscr update process, _not_ per-window.
1228 	 */
1229 	bool		_nc_sp_idlok;
1230 	bool		_nc_sp_idcok;
1231 
1232 	/*
1233 	 * These are the data that support the mouse interface.
1234 	 */
1235 	bool		_mouse_initialized;
1236 	MouseType	_mouse_type;
1237 	int		_maxclick;
1238 	bool		(*_mouse_event) (SCREEN *);
1239 	bool		(*_mouse_inline)(SCREEN *);
1240 	bool		(*_mouse_parse) (SCREEN *, int);
1241 	void		(*_mouse_resume)(SCREEN *);
1242 	void		(*_mouse_wrap)	(SCREEN *);
1243 	int		_mouse_fd;	/* file-descriptor, if any */
1244 	bool		_mouse_active;	/* true if initialized */
1245 	mmask_t		_mouse_mask;	/* set via mousemask() */
1246 	mmask_t		_mouse_mask2;	/* OR's in press/release bits */
1247 	mmask_t		_mouse_bstate;
1248 	MouseFormat	_mouse_format;	/* type of xterm mouse protocol */
1249 	NCURSES_CONST char *_mouse_xtermcap; /* string to enable/disable mouse */
1250 	MEVENT		_mouse_events[EV_MAX];	/* hold the last mouse event seen */
1251 	MEVENT		*_mouse_eventp;	/* next free slot in event queue */
1252 
1253 	/*
1254 	 * These are data that support the proper handling of the panel stack on an
1255 	 * per screen basis.
1256 	 */
1257 	struct panelhook _panelHook;
1258 
1259 	bool		_sig_winch;
1260 	SCREEN		*_next_screen;
1261 
1262 	/* hashes for old and new lines */
1263 	unsigned long	*oldhash, *newhash;
1264 	HASHMAP		*hashtab;
1265 	int		hashtab_len;
1266 	int		*_oldnum_list;
1267 	int		_oldnum_size;
1268 
1269 	NCURSES_SP_OUTC	_outch;		/* output handler if not putc */
1270 	NCURSES_OUTC	jump;
1271 
1272 	ripoff_t	rippedoff[N_RIPS];
1273 	ripoff_t	*rsp;
1274 
1275 	int		_legacy_coding;	/* see use_legacy_coding() */
1276 
1277 #if NCURSES_NO_PADDING
1278 	bool		_no_padding;	/* flag to set if padding disabled  */
1279 #endif
1280 
1281 #if USE_HARD_TABS
1282 	int		_ht_cost;	/* cost of (tab)		    */
1283 	int		_cbt_cost;	/* cost of (backtab)		    */
1284 #endif /* USE_HARD_TABS */
1285 
1286 	/* used in lib_vidattr.c */
1287 #if USE_ITALIC
1288 	bool		_use_ritm;	/* true if we may use 'ritm'	     */
1289 #endif
1290 
1291 	/* used in getch/twait */
1292 #if USE_KLIBC_KBD
1293 	bool		_extended_key;	/* true if an extended key	     */
1294 #endif
1295 
1296 	/* used in lib_color.c */
1297 #if NCURSES_EXT_FUNCS
1298 	bool		_assumed_color; /* use assumed colors		     */
1299 	bool		_default_color; /* use default colors		     */
1300 	bool		_has_sgr_39_49; /* has ECMA default color support    */
1301 	int		_default_fg;	/* assumed default foreground	     */
1302 	int		_default_bg;	/* assumed default background	     */
1303 	int		_default_pairs;	/* count pairs using default color   */
1304 #endif
1305 
1306 	/* system-dependent mouse data */
1307 #if USE_GPM_SUPPORT
1308 	bool		_mouse_gpm_loaded;
1309 	bool		_mouse_gpm_found;
1310 #ifdef HAVE_LIBDL
1311 	void		*_dlopen_gpm;
1312 	TYPE_gpm_fd	_mouse_gpm_fd;
1313 	TYPE_Gpm_Open	_mouse_Gpm_Open;
1314 	TYPE_Gpm_Close	_mouse_Gpm_Close;
1315 	TYPE_Gpm_GetEvent _mouse_Gpm_GetEvent;
1316 #endif
1317 	Gpm_Connect	_mouse_gpm_connect;
1318 #endif /* USE_GPM_SUPPORT */
1319 
1320 #if USE_EMX_MOUSE
1321 	int		_emxmouse_wfd;
1322 	int		_emxmouse_thread;
1323 	int		_emxmouse_activated;
1324 	char		_emxmouse_buttons[4];
1325 #endif
1326 
1327 #if USE_SYSMOUSE
1328 	MEVENT		_sysmouse_fifo[FIFO_SIZE];
1329 	int		_sysmouse_head;
1330 	int		_sysmouse_tail;
1331 	int		_sysmouse_char_width;	/* character width */
1332 	int		_sysmouse_char_height;	/* character height */
1333 	int		_sysmouse_old_buttons;
1334 	int		_sysmouse_new_buttons;
1335 #endif
1336 
1337 #ifdef USE_TERM_DRIVER
1338 	MEVENT		_drv_mouse_fifo[FIFO_SIZE];
1339 	int		_drv_mouse_head;
1340 	int		_drv_mouse_tail;
1341 	int		_drv_mouse_old_buttons;
1342 	int		_drv_mouse_new_buttons;
1343 #endif
1344 	/*
1345 	 * This supports automatic resizing
1346 	 */
1347 #if USE_SIZECHANGE
1348 	int		(*_resize)(NCURSES_SP_DCLx int y, int x);
1349 	int		(*_ungetch)(SCREEN *, int);
1350 #endif
1351 
1352 #ifdef USE_SP_WINDOWLIST
1353 	WINDOWLIST*	_windowlist;
1354 #define WindowList(sp)  (sp)->_windowlist
1355 #endif
1356 
1357 #if USE_REENTRANT
1358 	char		_ttytype[NAMESIZE];
1359 	int		_ESCDELAY;
1360 	int		_TABSIZE;
1361 	int		_LINES;
1362 	int		_COLS;
1363 #endif
1364 
1365 #if NCURSES_SP_FUNCS
1366 	bool		use_tioctl;
1367 #endif
1368 
1369 	/*
1370 	 * ncurses/ncursesw are the same up to this point.
1371 	 */
1372 #if USE_WIDEC_SUPPORT
1373 	/* recent versions of 'screen' have partially-working support for
1374 	 * UTF-8, but do not permit ACS at the same time (see tty_update.c).
1375 	 */
1376 	bool		_screen_acs_fix;
1377 	bool		_screen_unicode;
1378 #endif
1379 
1380 #if NCURSES_EXT_FUNCS && NCURSES_EXT_COLORS
1381 	void		*_ordered_pairs; /* index used by alloc_pair()	     */
1382 	int		_pairs_used;	/* actual number of color-pairs used */
1383 	int		_recent_pair;	/* number for most recent free-pair  */
1384 #endif
1385 
1386 #ifdef TRACE
1387 	char		tracechr_buf[40];
1388 	char		tracemse_buf[TRACEMSE_MAX];
1389 #if USE_REENTRANT
1390 	long		_outchars;
1391 	const char	*_tputs_trace;
1392 #endif
1393 #endif
1394 };
1395 
1396 extern NCURSES_EXPORT_VAR(SCREEN *) _nc_screen_chain;
1397 extern NCURSES_EXPORT_VAR(SIG_ATOMIC_T) _nc_have_sigwinch;
1398 
1399 	WINDOWLIST {
1400 	WINDOWLIST *next;
1401 	SCREEN *screen;		/* screen containing the window */
1402 	WINDOW	win;		/* WINDOW_EXT() needs to account for offset */
1403 #if NCURSES_WIDECHAR
1404 	char addch_work[(MB_LEN_MAX * 9) + 1];
1405 	unsigned addch_used;	/* number of bytes in addch_work[] */
1406 	int addch_x;		/* x-position for addch_work[] */
1407 	int addch_y;		/* y-position for addch_work[] */
1408 #endif
1409 };
1410 
1411 #define WINDOW_EXT(w,m) (((WINDOWLIST *)((void *)((char *)(w) - offsetof(WINDOWLIST, win))))->m)
1412 
1413 #ifdef USE_SP_WINDOWLIST
1414 #define SP_INIT_WINDOWLIST(sp)	WindowList(sp) = 0
1415 #else
1416 #define SP_INIT_WINDOWLIST(sp)	/* nothing */
1417 #endif
1418 
1419 #define SP_PRE_INIT(sp)                         \
1420     sp->_cursrow = -1;                          \
1421     sp->_curscol = -1;                          \
1422     sp->_nl = TRUE;                             \
1423     sp->_raw = FALSE;                           \
1424     sp->_cbreak = 0;                            \
1425     sp->_echo = TRUE;                           \
1426     sp->_fifohead = -1;                         \
1427     sp->_endwin = ewSuspend;                    \
1428     sp->_cursor = -1;                           \
1429     SP_INIT_WINDOWLIST(sp);                     \
1430     sp->_outch = NCURSES_OUTC_FUNC;             \
1431     sp->jump = 0                                \
1432 
1433 /* usually in <limits.h> */
1434 #ifndef UCHAR_MAX
1435 #define UCHAR_MAX 255
1436 #endif
1437 
1438 /* The terminfo source is assumed to be 7-bit ASCII */
1439 #define is7bits(c)	((unsigned)(c) < 128)
1440 
1441 /* Checks for isprint() should be done on 8-bit characters (non-wide) */
1442 #define is8bits(c)	((unsigned)(c) <= UCHAR_MAX)
1443 
1444 #ifndef min
1445 #define min(a,b)	((a) > (b)  ?  (b)  :  (a))
1446 #endif
1447 
1448 #ifndef max
1449 #define max(a,b)	((a) < (b)  ?  (b)  :  (a))
1450 #endif
1451 
1452 /* usually in <unistd.h> */
1453 #ifndef STDIN_FILENO
1454 #define STDIN_FILENO 0
1455 #endif
1456 
1457 #ifndef STDOUT_FILENO
1458 #define STDOUT_FILENO 1
1459 #endif
1460 
1461 #ifndef STDERR_FILENO
1462 #define STDERR_FILENO 2
1463 #endif
1464 
1465 #ifndef EXIT_SUCCESS
1466 #define EXIT_SUCCESS 0
1467 #endif
1468 
1469 #ifndef EXIT_FAILURE
1470 #define EXIT_FAILURE 1
1471 #endif
1472 
1473 #ifndef R_OK
1474 #define	R_OK	4		/* Test for read permission.  */
1475 #endif
1476 #ifndef W_OK
1477 #define	W_OK	2		/* Test for write permission.  */
1478 #endif
1479 #ifndef X_OK
1480 #define	X_OK	1		/* Test for execute permission.  */
1481 #endif
1482 #ifndef F_OK
1483 #define	F_OK	0		/* Test for existence.  */
1484 #endif
1485 
1486 #if HAVE_FCNTL_H
1487 #include <fcntl.h>		/* may define O_BINARY	*/
1488 #endif
1489 
1490 #ifndef O_BINARY
1491 #define O_BINARY 0
1492 #endif
1493 
1494 #ifdef TRACE
1495 #if USE_REENTRANT
1496 #define COUNT_OUTCHARS(n) _nc_count_outchars(n);
1497 #else
1498 #define COUNT_OUTCHARS(n) _nc_outchars += (n);
1499 #endif
1500 #else
1501 #define COUNT_OUTCHARS(n) /* nothing */
1502 #endif
1503 
1504 #define RESET_OUTCHARS() COUNT_OUTCHARS(-_nc_outchars)
1505 
1506 #define UChar(c)	((unsigned char)(c))
1507 #define UShort(c)	((unsigned short)(c))
1508 #define ChCharOf(c)	((chtype)(c) & (chtype)A_CHARTEXT)
1509 #define ChAttrOf(c)	((chtype)(c) & (chtype)A_ATTRIBUTES)
1510 
1511 #define TR_PUTC(c)	TR(TRACE_CHARPUT, ("PUTC %#x", UChar(c)))
1512 
1513 #ifndef MB_LEN_MAX
1514 #define MB_LEN_MAX 8 /* should be >= MB_CUR_MAX, but that may be a function */
1515 #endif
1516 
1517 #if USE_WIDEC_SUPPORT /* { */
1518 #define isEILSEQ(status) (((size_t)status == (size_t)-1) && (errno == EILSEQ))
1519 
1520 #define init_mb(state)	memset(&state, 0, sizeof(state))
1521 
1522 #if NCURSES_EXT_COLORS
1523 #define NulColor	, 0
1524 #else
1525 #define NulColor	/* nothing */
1526 #endif
1527 
1528 #define NulChar		0,0,0,0	/* FIXME: see CCHARW_MAX */
1529 #define CharOf(c)	((c).chars[0])
1530 #define AttrOf(c)	((c).attr)
1531 
1532 #define AddAttr(c,a)	AttrOf(c) |=  ((a) & A_ATTRIBUTES)
1533 #define RemAttr(c,a)	AttrOf(c) &= ~((a) & A_ATTRIBUTES)
1534 #define SetAttr(c,a)	AttrOf(c) =   ((a) & A_ATTRIBUTES) | WidecExt(c)
1535 
1536 #define NewChar2(c,a)	{ a, { c, NulChar } NulColor }
1537 #define NewChar(ch)	NewChar2(ChCharOf(ch), ChAttrOf(ch))
1538 
1539 #if CCHARW_MAX == 5
1540 #define CharEq(a,b)	(((a).attr == (b).attr) \
1541 		       && (a).chars[0] == (b).chars[0] \
1542 		       && (a).chars[1] == (b).chars[1] \
1543 		       && (a).chars[2] == (b).chars[2] \
1544 		       && (a).chars[3] == (b).chars[3] \
1545 		       && (a).chars[4] == (b).chars[4] \
1546 			if_EXT_COLORS(&& (a).ext_color == (b).ext_color))
1547 #elif CCHARW_MAX > 0
1548 #error Inconsistent values for CCHARW_MAX
1549 #else
1550 #define CharEq(a,b)	(!memcmp(&(a), &(b), sizeof(a)))
1551 #endif
1552 
1553 #define SetChar(ch,c,a) do {							    \
1554 			    NCURSES_CH_T *_cp = &ch;				    \
1555 			    memset(_cp, 0, sizeof(ch));				    \
1556 			    _cp->chars[0] = (wchar_t) (c);			    \
1557 			    _cp->attr = (a);					    \
1558 			    if_EXT_COLORS(SetPair(ch, PairNumber(a)));		    \
1559 			} while (0)
1560 #define CHREF(wch)	(&wch)
1561 #define CHDEREF(wch)	(*wch)
1562 #define ARG_CH_T	NCURSES_CH_T *
1563 #define CARG_CH_T	const NCURSES_CH_T *
1564 #define PUTC_DATA	char PUTC_buf[MB_LEN_MAX]; int PUTC_i, PUTC_n; \
1565 			mbstate_t PUT_st; wchar_t PUTC_ch
1566 #define PUTC_INIT	init_mb (PUT_st)
1567 #define PUTC(ch)	do { if(!isWidecExt(ch)) {				    \
1568 			if (Charable(ch)) {					    \
1569 			    TR_PUTC(CharOf(ch));				    \
1570 			    NCURSES_OUTC_FUNC (NCURSES_SP_ARGx CharOf(ch));	    \
1571 			    COUNT_OUTCHARS(1);					    \
1572 			} else {						    \
1573 			    for (PUTC_i = 0; PUTC_i < CCHARW_MAX; ++PUTC_i) {	    \
1574 				PUTC_ch = (ch).chars[PUTC_i];			    \
1575 				if (PUTC_ch == L'\0')				    \
1576 				    break;					    \
1577 				PUTC_INIT;					    \
1578 				PUTC_n = (int) wcrtomb(PUTC_buf,		    \
1579 						       (ch).chars[PUTC_i], &PUT_st); \
1580 				if (PUTC_n <= 0) {				    \
1581 				    if (PUTC_ch && is8bits(PUTC_ch) && PUTC_i == 0) { \
1582 					TR_PUTC(CharOf(ch));			    \
1583 					NCURSES_OUTC_FUNC (NCURSES_SP_ARGx CharOf(ch)); \
1584 				    }						    \
1585 				    break;					    \
1586 				} else {					    \
1587 				    int PUTC_j;					    \
1588 				    for (PUTC_j = 0; PUTC_j < PUTC_n; ++PUTC_j) {   \
1589 					TR_PUTC(PUTC_buf[PUTC_j]);		    \
1590 					NCURSES_OUTC_FUNC (NCURSES_SP_ARGx PUTC_buf[PUTC_j]); \
1591 				    }						    \
1592 				}						    \
1593 			    }							    \
1594 			    COUNT_OUTCHARS(PUTC_i);				    \
1595 			} } } while (0)
1596 
1597 #define BLANK		NewChar2(' ', WA_NORMAL)
1598 #define ZEROS		NewChar2('\0', WA_NORMAL)
1599 #define ISBLANK(ch)	((ch).chars[0] == L' ' && (ch).chars[1] == L'\0')
1600 
1601 	/*
1602 	 * Wide characters cannot be represented in the A_CHARTEXT mask of
1603 	 * attr_t's but an application might have set a narrow character there.
1604 	 * But even in that case, it would only be a printable character, or
1605 	 * zero.  Otherwise we can use those bits to tell if a cell is the
1606 	 * first or extension part of a wide character.
1607 	 */
1608 #define WidecExt(ch)	(int) (AttrOf(ch) & A_CHARTEXT)
1609 #define isWidecBase(ch)	(WidecExt(ch) == 1)
1610 #define isWidecExt(ch)	(WidecExt(ch) > 1 && WidecExt(ch) < 32)
1611 #define SetWidecExt(dst, ext)	AttrOf(dst) &= ~A_CHARTEXT,		\
1612 				AttrOf(dst) |= (attr_t) (ext + 1)
1613 
1614 #define if_WIDEC(code)  code
1615 #define Charable(ch)	(((SP_PARM->_legacy_coding)			\
1616 			 || (AttrOf(ch) & A_ALTCHARSET)			\
1617 			 || (!isWidecExt(ch))) &&			\
1618 			     (ch).chars[1] == L'\0' &&			\
1619 			     _nc_is_charable(CharOf(ch)))
1620 
1621 #define L(ch)		L ## ch
1622 #else /* }{ */
1623 #define CharOf(c)	ChCharOf(c)
1624 #define AttrOf(c)	ChAttrOf(c)
1625 #define AddAttr(c,a)	c |= (a)
1626 #define RemAttr(c,a)	c &= ~((a) & A_ATTRIBUTES)
1627 #define SetAttr(c,a)	c = ((c) & ~A_ATTRIBUTES) | (a)
1628 #define NewChar(ch)	(ch)
1629 #define NewChar2(c,a)	((c) | (a))
1630 #define CharEq(a,b)	((a) == (b))
1631 #define SetChar(ch,c,a)	ch = (c) | (a)
1632 #define CHREF(wch)	wch
1633 #define CHDEREF(wch)	wch
1634 #define ARG_CH_T	NCURSES_CH_T
1635 #define CARG_CH_T	NCURSES_CH_T
1636 #define PUTC_DATA	/* nothing */
1637 #define PUTC(ch)	{ \
1638 			    TR_PUTC(ch); \
1639 			    NCURSES_OUTC_FUNC (NCURSES_SP_ARGx (int) ch); \
1640 			}
1641 
1642 #define BLANK		(' '|A_NORMAL)
1643 #define ZEROS		('\0'|A_NORMAL)
1644 #define ISBLANK(ch)	(CharOf(ch) == ' ')
1645 
1646 #define isWidecExt(ch)	(0)
1647 #define if_WIDEC(code) /* nothing */
1648 
1649 #define Charable(ch)	((ch) >= ' ' && (ch) <= '~')
1650 #define L(ch)		ch
1651 #endif /* } */
1652 
1653 #define AttrOfD(ch)	AttrOf(CHDEREF(ch))
1654 #define CharOfD(ch)	CharOf(CHDEREF(ch))
1655 #define SetChar2(wch,ch)    SetChar(wch,ChCharOf(ch),ChAttrOf(ch))
1656 
1657 #define BLANK_ATTR	A_NORMAL
1658 #define BLANK_TEXT	L(' ')
1659 
1660 #define CHANGED     -1
1661 
1662 #define LEGALYX(w, y, x) \
1663 	      ((w) != 0 && \
1664 		((x) >= 0 && (x) <= (w)->_maxx && \
1665 		 (y) >= 0 && (y) <= (w)->_maxy))
1666 
1667 #define CHANGED_CELL(line,col) \
1668 	if (line->firstchar == _NOCHANGE) \
1669 		line->firstchar = line->lastchar = (NCURSES_SIZE_T) (col); \
1670 	else if ((col) < line->firstchar) \
1671 		line->firstchar = (NCURSES_SIZE_T) (col); \
1672 	else if ((col) > line->lastchar) \
1673 		line->lastchar = (NCURSES_SIZE_T) (col)
1674 
1675 #define CHANGED_RANGE(line,start,end) \
1676 	if (line->firstchar == _NOCHANGE \
1677 	 || line->firstchar > (start)) \
1678 		line->firstchar = (NCURSES_SIZE_T) (start); \
1679 	if (line->lastchar == _NOCHANGE \
1680 	 || line->lastchar < (end)) \
1681 		line->lastchar = (NCURSES_SIZE_T) (end)
1682 
1683 #define CHANGED_TO_EOL(line,start,end) \
1684 	if (line->firstchar == _NOCHANGE \
1685 	 || line->firstchar > (start)) \
1686 		line->firstchar = (NCURSES_SIZE_T) (start); \
1687 	line->lastchar = (NCURSES_SIZE_T) (end)
1688 
1689 #define SIZEOF(v) (sizeof(v)/sizeof(v[0]))
1690 
1691 #define FreeIfNeeded(p)  if ((p) != 0) free(p)
1692 
1693 /* FreeAndNull() is not a comma-separated expression because some compilers
1694  * do not accept a mixture of void with values.
1695  */
1696 #define FreeAndNull(p)   do { free(p); p = 0; } while (0)
1697 
1698 #include <nc_alloc.h>
1699 
1700 /*
1701  * Use these for tic/infocmp malloc failures.  Generally the ncurses library
1702  * tries to limp along after a failure.
1703  */
1704 #define TYPE_MALLOC(type, size, name) \
1705 	do { \
1706 	    name = typeMalloc(type, size); \
1707 	    if (name == 0) \
1708 		_nc_err_abort(MSG_NO_MEMORY); \
1709 	} while (0)
1710 
1711 #define TYPE_REALLOC(type, size, name) \
1712 	do { \
1713 	    name = typeRealloc(type, size, name); \
1714 	    if (name == 0) \
1715 		_nc_err_abort(MSG_NO_MEMORY); \
1716 	} while (0)
1717 
1718 /*
1719  * TTY bit definition for converting tabs to spaces.
1720  */
1721 #ifdef TAB3
1722 # define OFLAGS_TABS TAB3	/* POSIX specifies TAB3 */
1723 #else
1724 # ifdef XTABS
1725 #  define OFLAGS_TABS XTABS	/* XTABS is usually the "same" */
1726 # else
1727 #  ifdef OXTABS
1728 #   define OFLAGS_TABS OXTABS	/* the traditional BSD equivalent */
1729 #  else
1730 #   define OFLAGS_TABS 0
1731 #  endif
1732 # endif
1733 #endif
1734 
1735 #ifdef __TANDEM
1736 #define ROOT_UID 65535
1737 #endif
1738 
1739 #ifndef ROOT_UID
1740 #define ROOT_UID 0
1741 #endif
1742 
1743 /*
1744  * Standardize/simplify common loops
1745  */
1746 #define each_screen(p) p = _nc_screen_chain; p != 0; p = (p)->_next_screen
1747 #define each_window(sp,p) p = WindowList(sp); p != 0; p = (p)->next
1748 #define each_ripoff(p) p = safe_ripoff_stack; (p - safe_ripoff_stack) < N_RIPS; ++p
1749 
1750 /*
1751  * Prefixes for call/return points of library function traces.  We use these to
1752  * instrument the public functions so that the traces can be easily transformed
1753  * into regression scripts.
1754  */
1755 #define T_CALLED(fmt) "called {" fmt
1756 #define T_CREATE(fmt) "create :" fmt
1757 #define T_RETURN(fmt) "return }" fmt
1758 
1759 #define NonNull(s)              ((s) != 0 ? s : "<null>")
1760 #define NonEmpty(s)             ((s) != 0 && *(s) != '\0')
1761 
1762 #ifdef TRACE
1763 
1764 #if USE_REENTRANT
1765 #define TPUTS_TRACE(s)	_nc_set_tputs_trace(s);
1766 #else
1767 #define TPUTS_TRACE(s)	_nc_tputs_trace = s;
1768 #endif
1769 
1770 #ifdef HAVE_CONSISTENT_GETENV
1771 #define START_TRACE() \
1772 	if ((_nc_tracing & TRACE_MAXIMUM) == 0) { \
1773 	    int t = _nc_getenv_num("NCURSES_TRACE"); \
1774 	    if (t >= 0) \
1775 		curses_trace((unsigned) t); \
1776 	}
1777 #else
1778 #define START_TRACE() /* nothing */
1779 #endif
1780 
1781 /*
1782  * Many of the _tracef() calls use static buffers; lock the trace state before
1783  * trying to fill them.
1784  */
1785 #if USE_REENTRANT
1786 #define USE_TRACEF(mask) _nc_use_tracef(mask)
1787 extern NCURSES_EXPORT(int)	_nc_use_tracef (unsigned);
1788 extern NCURSES_EXPORT(void)	_nc_locked_tracef (const char *, ...) GCC_PRINTFLIKE(1,2);
1789 #else
1790 #define USE_TRACEF(mask) (_nc_tracing & (mask))
1791 #define _nc_locked_tracef _tracef
1792 #endif
1793 
1794 #define TR(n, a)	if (USE_TRACEF(n)) _nc_locked_tracef a
1795 #define T(a)		TR(TRACE_CALLS, a)
1796 #define TRACE_RETURN(value,type)     return _nc_retrace_##type((type)(value))
1797 #define TRACE_RETURN1(value,dst)     return _nc_retrace_##dst(value)
1798 #define TRACE_RETURN2(value,dst,src) return _nc_retrace_##dst##_##src(value)
1799 #define TRACE_RETURN_SP(value,type)  return _nc_retrace_##type(SP_PARM, value)
1800 
1801 typedef void VoidFunc(void);
1802 
1803 #define TR_FUNC_LEN		((sizeof(void *) + sizeof(void (*)(void))) * 2 + 4)
1804 #define TR_FUNC_BFR(max)	char tr_func_data[max][TR_FUNC_LEN]
1805 #define TR_FUNC_ARG(num,func)	_nc_fmt_funcptr(&tr_func_data[num][0], (const char *)&(func), sizeof((func)))
1806 
1807 #define returnAttr(code)	TRACE_RETURN(code,attr_t)
1808 #define returnBits(code)	TRACE_RETURN(code,unsigned)
1809 #define returnBool(code)	TRACE_RETURN(code,bool)
1810 #define returnCPtr(code)	TRACE_RETURN1(code,cptr)
1811 #define returnCVoidPtr(code)	TRACE_RETURN1(code,cvoid_ptr)
1812 #define returnChar(code)	TRACE_RETURN(code,char)
1813 #define returnChtype(code)	TRACE_RETURN(code,chtype)
1814 #define returnCode(code)	TRACE_RETURN(code,int)
1815 #define returnIntAttr(code)	TRACE_RETURN2(code,int,attr_t)
1816 #define returnMMask(code)	TRACE_RETURN_SP(code,mmask_t)
1817 #define returnPtr(code)		TRACE_RETURN1(code,ptr)
1818 #define returnSP(code)		TRACE_RETURN1(code,sp)
1819 #define returnVoid		T((T_RETURN(""))); return
1820 #define returnVoidPtr(code)	TRACE_RETURN1(code,void_ptr)
1821 #define returnWin(code)		TRACE_RETURN1(code,win)
1822 
1823 #define returnDB(rc)		do { TR(TRACE_DATABASE,(T_RETURN("code %d"), (rc))); return (rc); } while (0)
1824 
1825 extern NCURSES_EXPORT(NCURSES_BOOL)     _nc_retrace_bool (int);
1826 extern NCURSES_EXPORT(NCURSES_CONST void *) _nc_retrace_cvoid_ptr (NCURSES_CONST void *);
1827 extern NCURSES_EXPORT(SCREEN *)         _nc_retrace_sp (SCREEN *);
1828 extern NCURSES_EXPORT(WINDOW *)         _nc_retrace_win (WINDOW *);
1829 extern NCURSES_EXPORT(attr_t)           _nc_retrace_attr_t (attr_t);
1830 extern NCURSES_EXPORT(char *)           _nc_retrace_ptr (char *);
1831 extern NCURSES_EXPORT(char *)           _nc_trace_ttymode(TTY *tty);
1832 extern NCURSES_EXPORT(char *)           _nc_varargs (const char *, va_list);
1833 extern NCURSES_EXPORT(chtype)           _nc_retrace_chtype (chtype);
1834 extern NCURSES_EXPORT(const char *)     _nc_altcharset_name(attr_t, chtype);
1835 extern NCURSES_EXPORT(const char *)     _nc_retrace_cptr (const char *);
1836 extern NCURSES_EXPORT(char)             _nc_retrace_char (int);
1837 extern NCURSES_EXPORT(int)              _nc_retrace_int (int);
1838 extern NCURSES_EXPORT(int)              _nc_retrace_int_attr_t (attr_t);
1839 extern NCURSES_EXPORT(mmask_t)          _nc_retrace_mmask_t (SCREEN *, mmask_t);
1840 extern NCURSES_EXPORT(unsigned)         _nc_retrace_unsigned (unsigned);
1841 extern NCURSES_EXPORT(void *)           _nc_retrace_void_ptr (void *);
1842 extern NCURSES_EXPORT(void)             _nc_fifo_dump (SCREEN *);
1843 
1844 extern NCURSES_EXPORT(char *)           _nc_fmt_funcptr(char *, const char *, size_t);
1845 
1846 #if USE_REENTRANT
1847 NCURSES_WRAPPED_VAR(long, _nc_outchars);
1848 NCURSES_WRAPPED_VAR(const char *, _nc_tputs_trace);
1849 #define _nc_outchars       NCURSES_PUBLIC_VAR(_nc_outchars())
1850 #define _nc_tputs_trace    NCURSES_PUBLIC_VAR(_nc_tputs_trace())
1851 extern NCURSES_EXPORT(void)		_nc_set_tputs_trace (const char *);
1852 extern NCURSES_EXPORT(void)		_nc_count_outchars (long);
1853 #else
1854 extern NCURSES_EXPORT_VAR(const char *) _nc_tputs_trace;
1855 extern NCURSES_EXPORT_VAR(long)         _nc_outchars;
1856 #endif
1857 
1858 extern NCURSES_EXPORT_VAR(unsigned)     _nc_tracing;
1859 
1860 extern NCURSES_EXPORT(char *) _nc_tracebits (void);
1861 extern NCURSES_EXPORT(char *) _tracemouse (const MEVENT *);
1862 extern NCURSES_EXPORT(void) _tracedump (const char *, WINDOW *);
1863 
1864 #if USE_WIDEC_SUPPORT
1865 extern NCURSES_EXPORT(const char *) _nc_viswbuf2 (int, const wchar_t *);
1866 extern NCURSES_EXPORT(const char *) _nc_viswbufn (const wchar_t *, int);
1867 #endif
1868 
1869 extern NCURSES_EXPORT(const char *) _nc_viscbuf2 (int, const NCURSES_CH_T *, int);
1870 extern NCURSES_EXPORT(const char *) _nc_viscbuf (const NCURSES_CH_T *, int);
1871 
1872 #else /* !TRACE */
1873 
1874 #define START_TRACE() /* nothing */
1875 
1876 #define T(a)
1877 #define TR(n, a)
1878 #define TPUTS_TRACE(s)
1879 #define TR_FUNC_BFR(max)
1880 
1881 #define returnAttr(code)	return code
1882 #define returnBits(code)	return code
1883 #define returnBool(code)	return code
1884 #define returnCPtr(code)	return code
1885 #define returnCVoidPtr(code)	return code
1886 #define returnChar(code)	return ((char) code)
1887 #define returnChtype(code)	return code
1888 #define returnCode(code)	return code
1889 #define returnIntAttr(code)	return code
1890 #define returnMMask(code)	return code
1891 #define returnPtr(code)		return code
1892 #define returnSP(code)		return code
1893 #define returnVoid		return
1894 #define returnVoidPtr(code)	return code
1895 #define returnWin(code)		return code
1896 
1897 #define returnDB(code)		return code
1898 
1899 #endif /* TRACE/!TRACE */
1900 
1901 /*
1902  * Workaround for defective implementation of gcc attribute warn_unused_result
1903  */
1904 #if defined(__GNUC__) && defined(_FORTIFY_SOURCE)
1905 #define IGNORE_RC(func) errno = (int) func
1906 #else
1907 #define IGNORE_RC(func) (void) func
1908 #endif /* gcc workarounds */
1909 
1910 /*
1911  * Return-codes for tgetent() and friends.
1912  */
1913 #define TGETENT_YES  1		/* entry is found */
1914 #define TGETENT_NO   0		/* entry is not found */
1915 #define TGETENT_ERR -1		/* an error occurred */
1916 
1917 extern NCURSES_EXPORT(const char *) _nc_visbuf2 (int, const char *);
1918 extern NCURSES_EXPORT(const char *) _nc_visbufn (const char *, int);
1919 
1920 #define EMPTY_MODULE(name) \
1921 extern	NCURSES_EXPORT(void) name (void); \
1922 	NCURSES_EXPORT(void) name (void) { }
1923 
1924 #define ALL_BUT_COLOR ((chtype)~(A_COLOR))
1925 #define NONBLANK_ATTR (A_BOLD | A_DIM | A_BLINK | A_ITALIC)
1926 #define TPARM_ATTR    (A_STANDOUT | A_UNDERLINE | A_REVERSE | A_BLINK | A_DIM | A_BOLD | A_ALTCHARSET | A_INVIS | A_PROTECT)
1927 #define XMC_CONFLICT  (A_STANDOUT | A_UNDERLINE | A_REVERSE | A_BLINK | A_DIM | A_BOLD | A_INVIS | A_PROTECT | A_ITALIC)
1928 #define XMC_CHANGES(c) ((c) & SP_PARM->_xmc_suppress)
1929 
1930 #define toggle_attr_on(S,at) {\
1931    if (PairNumber(at) > 0) {\
1932       (S) = ((S) & ALL_BUT_COLOR) | (attr_t) (at);\
1933    } else {\
1934       (S) |= (attr_t) (at);\
1935    }\
1936    TR(TRACE_ATTRS, ("new attribute is %s", _traceattr((S))));}
1937 
1938 
1939 #define toggle_attr_off(S,at) {\
1940    if (PairNumber(at) > 0) {\
1941       (S) &= ~(at|A_COLOR);\
1942    } else {\
1943       (S) &= ~(at);\
1944    }\
1945    TR(TRACE_ATTRS, ("new attribute is %s", _traceattr((S))));}
1946 
1947 #define DelCharCost(sp,count) \
1948 		((parm_dch != 0) \
1949 		? sp->_dch_cost \
1950 		: ((delete_character != 0) \
1951 			? (sp->_dch1_cost * count) \
1952 			: INFINITY))
1953 
1954 #define InsCharCost(sp,count) \
1955 		((parm_ich != 0) \
1956 		? sp->_ich_cost \
1957 		: ((enter_insert_mode && exit_insert_mode) \
1958 		  ? sp->_smir_cost + sp->_rmir_cost + (sp->_ip_cost * count) \
1959 		  : ((insert_character != 0) \
1960 		    ? ((sp->_ich1_cost + sp->_ip_cost) * count) \
1961 		    : INFINITY)))
1962 
1963 #if USE_XMC_SUPPORT
1964 #define UpdateAttrs(sp,c) if (!SameAttrOf(SCREEN_ATTRS(sp), c)) { \
1965 				attr_t chg = AttrOf(SCREEN_ATTRS(sp)); \
1966 				VIDPUTS(sp, AttrOf(c), GetPair(c)); \
1967 				if (magic_cookie_glitch > 0 \
1968 				 && XMC_CHANGES((chg ^ AttrOf(SCREEN_ATTRS(sp))))) { \
1969 					T(("%s @%d before glitch %d,%d", \
1970 						__FILE__, __LINE__, \
1971 						sp->_cursrow, \
1972 						sp->_curscol)); \
1973 					NCURSES_SP_NAME(_nc_do_xmc_glitch)(NCURSES_SP_ARGx chg); \
1974 				} \
1975 			}
1976 #else
1977 #define UpdateAttrs(sp,c) if (!SameAttrOf(SCREEN_ATTRS(sp), c)) { \
1978 				    VIDPUTS(sp, AttrOf(c), GetPair(c)); \
1979 			}
1980 #endif
1981 
1982 /*
1983  * Macros to make additional parameter to implement wgetch_events()
1984  */
1985 #ifdef NCURSES_WGETCH_EVENTS
1986 #define EVENTLIST_0th(param) param
1987 #define EVENTLIST_1st(param) param
1988 #define EVENTLIST_2nd(param) , param
1989 #define TWAIT_MASK (TW_ANY | TW_EVENT)
1990 #else
1991 #define EVENTLIST_0th(param) void
1992 #define EVENTLIST_1st(param) /* nothing */
1993 #define EVENTLIST_2nd(param) /* nothing */
1994 #define TWAIT_MASK TW_ANY
1995 #endif
1996 
1997 #if NCURSES_EXPANDED && NCURSES_EXT_FUNCS
1998 
1999 #undef  toggle_attr_on
2000 #define toggle_attr_on(S,at) _nc_toggle_attr_on(&(S), at)
2001 extern NCURSES_EXPORT(void) _nc_toggle_attr_on (attr_t *, attr_t);
2002 
2003 #undef  toggle_attr_off
2004 #define toggle_attr_off(S,at) _nc_toggle_attr_off(&(S), at)
2005 extern NCURSES_EXPORT(void) _nc_toggle_attr_off (attr_t *, attr_t);
2006 
2007 #undef  DelCharCost
2008 #define DelCharCost(sp, count) NCURSES_SP_NAME(_nc_DelCharCost)(NCURSES_SP_ARGx count)
2009 
2010 #undef  InsCharCost
2011 #define InsCharCost(sp, count) NCURSES_SP_NAME(_nc_InsCharCost)(NCURSES_SP_ARGx count)
2012 
2013 extern NCURSES_EXPORT(int) NCURSES_SP_NAME(_nc_DelCharCost) (NCURSES_SP_DCLx int _c);
2014 extern NCURSES_EXPORT(int) NCURSES_SP_NAME(_nc_InsCharCost) (NCURSES_SP_DCLx int _c);
2015 
2016 #undef  UpdateAttrs
2017 #define UpdateAttrs(sp,c) NCURSES_SP_NAME(_nc_UpdateAttrs)(NCURSES_SP_ARGx CHREF(c))
2018 
2019 #if USE_WIDEC_SUPPORT || defined(NEED_NCURSES_CH_T)
2020 extern NCURSES_EXPORT(void) NCURSES_SP_NAME(_nc_UpdateAttrs) (NCURSES_SP_DCLx CARG_CH_T _c);
2021 #else
2022 extern NCURSES_EXPORT(void) NCURSES_SP_NAME(_nc_UpdateAttrs) (NCURSES_SP_DCLx chtype c);
2023 #endif
2024 
2025 #if NCURSES_SP_FUNCS
2026 extern NCURSES_EXPORT(int) _nc_DelCharCost (int);
2027 extern NCURSES_EXPORT(int) _nc_InsCharCost (int);
2028 extern NCURSES_EXPORT(void) _nc_UpdateAttrs (CARG_CH_T);
2029 #endif /* NCURSES_SP_FUNCS */
2030 
2031 #else
2032 
2033 extern NCURSES_EXPORT(void) _nc_expanded (void);
2034 
2035 #endif
2036 
2037 #if !NCURSES_EXT_FUNCS
2038 #define set_escdelay(value) ESCDELAY = value
2039 #endif
2040 
2041 #if !HAVE_GETCWD
2042 #define getcwd(buf,len) getwd(buf)
2043 #endif
2044 
2045 #define save_ttytype(termp) \
2046 	if (TerminalType(termp).term_names != 0) { \
2047 	    _nc_STRNCPY(ttytype, \
2048 	    		TerminalType(termp).term_names, \
2049 			NAMESIZE - 1); \
2050 	    ttytype[NAMESIZE - 1] = '\0'; \
2051 	}
2052 
2053 #if !NCURSES_WCWIDTH_GRAPHICS
2054 extern NCURSES_EXPORT(int) _nc_wacs_width(unsigned);
2055 #else
2056 #define _nc_wacs_width(ch) wcwidth(ch)
2057 #endif
2058 
2059 /* charable.c */
2060 #if USE_WIDEC_SUPPORT
2061 extern NCURSES_EXPORT(bool) _nc_is_charable(wchar_t);
2062 extern NCURSES_EXPORT(int) _nc_to_char(wint_t);
2063 extern NCURSES_EXPORT(wint_t) _nc_to_widechar(int);
2064 #endif
2065 
2066 /* comp_captab.c */
2067 typedef struct {
2068 	short	nte_name;	/* offset of name to hash on */
2069 	int	nte_type;	/* BOOLEAN, NUMBER or STRING */
2070 	short	nte_index;	/* index of associated variable in its array */
2071 	short	nte_link;	/* index in table of next hash, or -1 */
2072 } name_table_data;
2073 
2074 typedef struct
2075 {
2076 	short	from;
2077 	short	to;
2078 	short	source;
2079 } alias_table_data;
2080 
2081 /* comp_userdefs.c */
2082 typedef struct {
2083 	short	ute_name;	/* offset of name to hash on */
2084 	unsigned ute_type;	/* mask (BOOLEAN, NUMBER, STRING) */
2085 	unsigned ute_argc;	/* number of parameters */
2086 	unsigned ute_args;	/* bit-mask for string parameters */
2087 	short	ute_index;	/* index of associated variable in its array */
2088 	short	ute_link;	/* index in table of next hash, or -1 */
2089 } user_table_data;
2090 
2091 /* doupdate.c */
2092 #if USE_XMC_SUPPORT
2093 extern NCURSES_EXPORT(void) _nc_do_xmc_glitch (attr_t);
2094 #endif
2095 
2096 /* hardscroll.c */
2097 #if defined(TRACE) || defined(SCROLLDEBUG) || defined(HASHDEBUG)
2098 extern NCURSES_EXPORT(void) _nc_linedump (void);
2099 #endif
2100 
2101 /* lib_acs.c */
2102 extern NCURSES_EXPORT(void) _nc_init_acs (void); /* corresponds to traditional 'init_acs()' */
2103 extern NCURSES_EXPORT(int)  _nc_msec_cost (const char *const, int);  /* used by 'tack' program */
2104 
2105 /* lib_addch.c */
2106 #if USE_WIDEC_SUPPORT
2107 NCURSES_EXPORT(int) _nc_build_wch(WINDOW *win, ARG_CH_T ch);
2108 #endif
2109 
2110 /* lib_addstr.c */
2111 #if USE_WIDEC_SUPPORT && !(defined(USE_TERMLIB) || defined(USE_BUILD_CC))
2112 extern NCURSES_EXPORT(int) _nc_wchstrlen(const cchar_t *);
2113 #endif
2114 
2115 /* lib_color.c */
2116 extern NCURSES_EXPORT(int) _nc_init_color(SCREEN *, int, int, int, int);
2117 extern NCURSES_EXPORT(int) _nc_init_pair(SCREEN *, int, int, int);
2118 extern NCURSES_EXPORT(int) _nc_pair_content(SCREEN *, int, int *, int *);
2119 extern NCURSES_EXPORT(bool) _nc_reset_colors(void);
2120 extern NCURSES_EXPORT(void) _nc_reserve_pairs(SCREEN *, int);
2121 extern NCURSES_EXPORT(void) _nc_change_pair(SCREEN *, int);
2122 
2123 #define ReservePairs(sp,want) \
2124 	    if ((sp->_color_pairs == 0) || (want >= sp->_pair_alloc)) \
2125 		_nc_reserve_pairs(sp, want)
2126 
2127 /* lib_getch.c */
2128 extern NCURSES_EXPORT(int) _nc_wgetch(WINDOW *, int *, int EVENTLIST_2nd(_nc_eventlist *));
2129 
2130 /* lib_insch.c */
2131 extern NCURSES_EXPORT(int) _nc_insert_ch(SCREEN *, WINDOW *, chtype);
2132 
2133 /* lib_mvcur.c */
2134 #define INFINITY	1000000	/* cost: too high to use */
2135 
2136 extern NCURSES_EXPORT(int) _nc_mvcur(int yold, int xold, int ynew, int xnew);
2137 
2138 extern NCURSES_EXPORT(void) _nc_mvcur_init (void);
2139 extern NCURSES_EXPORT(void) _nc_mvcur_resume (void);
2140 extern NCURSES_EXPORT(void) _nc_mvcur_wrap (void);
2141 
2142 extern NCURSES_EXPORT(int) _nc_scrolln (int, int, int, int);
2143 
2144 extern NCURSES_EXPORT(void) _nc_screen_init (void);
2145 extern NCURSES_EXPORT(void) _nc_screen_resume (void);
2146 extern NCURSES_EXPORT(void) _nc_screen_wrap (void);
2147 
2148 /* lib_mouse.c */
2149 extern NCURSES_EXPORT(bool) _nc_has_mouse (SCREEN *);
2150 
2151 /* lib_mvcur.c */
2152 #define INFINITY	1000000	/* cost: too high to use */
2153 #define BAUDBYTE	9	/* 9 = 7 bits + 1 parity + 1 stop */
2154 
2155 /* lib_setup.c */
2156 extern NCURSES_EXPORT(char *) _nc_get_locale(void);
2157 extern NCURSES_EXPORT(int)    _nc_unicode_locale(void);
2158 extern NCURSES_EXPORT(int)    _nc_locale_breaks_acs(TERMINAL *);
2159 extern NCURSES_EXPORT(int)    _nc_setupterm(const char *, int, int *, int);
2160 extern NCURSES_EXPORT(void)   _nc_tinfo_cmdch(TERMINAL *, int);
2161 
2162 #ifdef USE_PTHREADS
2163 extern NCURSES_EXPORT(SCREEN *) _nc_find_prescr(void);
2164 extern NCURSES_EXPORT(void)   _nc_forget_prescr(void);
2165 #else
2166 #define _nc_find_prescr()     _nc_prescreen.allocated
2167 #define _nc_forget_prescr()   _nc_prescreen.allocated = 0
2168 #endif
2169 
2170 /* lib_set_term.c */
2171 extern NCURSES_EXPORT(int)    _nc_ripoffline(int, int(*)(WINDOW*, int));
2172 
2173 /* lib_setup.c */
2174 #define ExitTerminfo(code)    exit_terminfo(code)
2175 
2176 #define SETUP_FAIL ERR
2177 
2178 #define ret_error(rc, fmt, p, q)	if (errret) {\
2179 					    *errret = rc;\
2180 					    q;\
2181 					    returnCode(SETUP_FAIL);\
2182 					} else {\
2183 					    fprintf(stderr, fmt, p);\
2184 					    q;\
2185 					    ExitTerminfo(EXIT_FAILURE);\
2186 					}
2187 
2188 #define ret_error1(rc, fmt, p, q)	ret_error(rc, "'%s': " fmt, p, q)
2189 
2190 #define ret_error0(rc, msg)		if (errret) {\
2191 					    *errret = rc;\
2192 					    returnCode(SETUP_FAIL);\
2193 					} else {\
2194 					    fprintf(stderr, msg);\
2195 					    ExitTerminfo(EXIT_FAILURE);\
2196 					}
2197 
2198 /* lib_tstp.c */
2199 #if USE_SIGWINCH
2200 extern NCURSES_EXPORT(int) _nc_handle_sigwinch(SCREEN *);
2201 #else
2202 #define _nc_handle_sigwinch(a) /* nothing */
2203 #endif
2204 
2205 /* lib_wacs.c */
2206 #if USE_WIDEC_SUPPORT
2207 extern NCURSES_EXPORT(void) _nc_init_wacs(void);
2208 #endif
2209 
2210 typedef struct {
2211     char *s_head;	/* beginning of the string (may be null) */
2212     char *s_tail;	/* end of the string (may be null) */
2213     size_t s_size;	/* current remaining size available */
2214     size_t s_init;	/* total size available */
2215 } string_desc;
2216 
2217 /* strings.c */
2218 extern NCURSES_EXPORT(string_desc *) _nc_str_init (string_desc *, char *, size_t);
2219 extern NCURSES_EXPORT(string_desc *) _nc_str_null (string_desc *, size_t);
2220 extern NCURSES_EXPORT(string_desc *) _nc_str_copy (string_desc *, string_desc *);
2221 extern NCURSES_EXPORT(bool) _nc_safe_strcat (string_desc *, const char *);
2222 extern NCURSES_EXPORT(bool) _nc_safe_strcpy (string_desc *, const char *);
2223 
2224 #if !HAVE_STRSTR
2225 #define strstr _nc_strstr
2226 extern NCURSES_EXPORT(char *) _nc_strstr (const char *, const char *);
2227 #endif
2228 
2229 /* safe_sprintf.c */
2230 extern NCURSES_EXPORT(char *) _nc_printf_string (const char *, va_list);
2231 
2232 /* tries.c */
2233 extern NCURSES_EXPORT(int) _nc_add_to_try (TRIES **, const char *, unsigned);
2234 extern NCURSES_EXPORT(char *) _nc_expand_try (TRIES *, unsigned, int *, size_t);
2235 extern NCURSES_EXPORT(int) _nc_remove_key (TRIES **, unsigned);
2236 extern NCURSES_EXPORT(int) _nc_remove_string (TRIES **, const char *);
2237 
2238 /* elsewhere ... */
2239 extern NCURSES_EXPORT(SCREEN *) _nc_screen_of (WINDOW *);
2240 extern NCURSES_EXPORT(TERMINAL*) _nc_get_cur_term (void);
2241 extern NCURSES_EXPORT(WINDOW *) _nc_makenew (int, int, int, int, int);
2242 extern NCURSES_EXPORT(char *) _nc_trace_buf (int, size_t);
2243 extern NCURSES_EXPORT(char *) _nc_trace_bufcat (int, const char *);
2244 extern NCURSES_EXPORT(char *) _nc_tracechar (SCREEN *, int);
2245 extern NCURSES_EXPORT(char *) _nc_tracemouse (SCREEN *, MEVENT const *);
2246 extern NCURSES_EXPORT(char *) _nc_trace_mmask_t (SCREEN *, mmask_t);
2247 extern NCURSES_EXPORT(int) _nc_access (const char *, int);
2248 extern NCURSES_EXPORT(int) _nc_baudrate (int);
2249 extern NCURSES_EXPORT(int) _nc_freewin (WINDOW *);
2250 extern NCURSES_EXPORT(int) _nc_getenv_num (const char *);
2251 extern NCURSES_EXPORT(int) _nc_keypad (SCREEN *, int);
2252 extern NCURSES_EXPORT(int) _nc_ospeed (int);
2253 extern NCURSES_EXPORT(int) _nc_outch (int);
2254 extern NCURSES_EXPORT(int) _nc_putchar (int);
2255 extern NCURSES_EXPORT(int) _nc_putp(const char *, const char *);
2256 extern NCURSES_EXPORT(int) _nc_putp_flush(const char *, const char *);
2257 extern NCURSES_EXPORT(int) _nc_read_termcap_entry (const char *const, TERMTYPE2 *const);
2258 extern NCURSES_EXPORT(int) _nc_setup_tinfo(const char *, TERMTYPE2 *);
2259 extern NCURSES_EXPORT(int) _nc_setupscreen (int, int, FILE *, int, int);
2260 extern NCURSES_EXPORT(int) _nc_timed_wait (SCREEN *, int, int, int * EVENTLIST_2nd(_nc_eventlist *));
2261 extern NCURSES_EXPORT(void) _nc_init_termtype (TERMTYPE2 *const);
2262 extern NCURSES_EXPORT(void) _nc_do_color (int, int, int, NCURSES_OUTC);
2263 extern NCURSES_EXPORT(void) _nc_flush (void);
2264 extern NCURSES_EXPORT(void) _nc_free_entry (ENTRY *, TERMTYPE2 *);
2265 extern NCURSES_EXPORT(void) _nc_freeall (void);
2266 extern NCURSES_EXPORT(void) _nc_hash_map (void);
2267 extern NCURSES_EXPORT(void) _nc_init_keytry (SCREEN *);
2268 extern NCURSES_EXPORT(void) _nc_keep_tic_dir (const char *);
2269 extern NCURSES_EXPORT(void) _nc_make_oldhash (int i);
2270 extern NCURSES_EXPORT(void) _nc_scroll_oldhash (int n, int top, int bot);
2271 extern NCURSES_EXPORT(void) _nc_scroll_optimize (void);
2272 extern NCURSES_EXPORT(void) _nc_set_buffer (FILE *, int);
2273 extern NCURSES_EXPORT(void) _nc_setenv_num (const char *, int);
2274 extern NCURSES_EXPORT(void) _nc_signal_handler (int);
2275 extern NCURSES_EXPORT(void) _nc_synchook (WINDOW *);
2276 extern NCURSES_EXPORT(void) _nc_trace_tries (TRIES *);
2277 
2278 #if NCURSES_EXT_NUMBERS
2279 extern NCURSES_EXPORT(const TERMTYPE2 *) _nc_fallback2 (const char *);
2280 #else
2281 #define _nc_fallback2(tp) _nc_fallback(tp)
2282 #endif
2283 
2284 #if NCURSES_EXT_NUMBERS
2285 extern NCURSES_EXPORT(void) _nc_copy_termtype2 (TERMTYPE2 *, const TERMTYPE2 *);
2286 extern NCURSES_EXPORT(void) _nc_export_termtype2(TERMTYPE *, const TERMTYPE2 *);
2287 #else
2288 #define _nc_copy_termtype2(dst,src) _nc_copy_termtype((dst),(src))
2289 #define _nc_export_termtype2(dst,src) /* nothing */
2290 #define _nc_free_termtype2(t) _nc_free_termtype(t)
2291 /* also... */
2292 #define _nc_read_entry2 _nc_read_entry
2293 #endif
2294 
2295 #if NO_LEAKS
2296 extern NCURSES_EXPORT(void) _nc_alloc_entry_leaks(void);
2297 extern NCURSES_EXPORT(void) _nc_captoinfo_leaks(void);
2298 extern NCURSES_EXPORT(void) _nc_codes_leaks(void);
2299 extern NCURSES_EXPORT(void) _nc_comp_captab_leaks(void);
2300 extern NCURSES_EXPORT(void) _nc_comp_error_leaks(void);
2301 extern NCURSES_EXPORT(void) _nc_comp_scan_leaks(void);
2302 extern NCURSES_EXPORT(void) _nc_comp_userdefs_leaks(void);
2303 extern NCURSES_EXPORT(void) _nc_db_iterator_leaks(void);
2304 extern NCURSES_EXPORT(void) _nc_keyname_leaks(void);
2305 extern NCURSES_EXPORT(void) _nc_names_leaks(void);
2306 extern NCURSES_EXPORT(void) _nc_tgetent_leak(TERMINAL *);
2307 extern NCURSES_EXPORT(void) _nc_tgetent_leaks(void);
2308 #endif
2309 
2310 #if !(defined(USE_TERMLIB) || defined(USE_BUILD_CC))
2311 extern NCURSES_EXPORT(NCURSES_CH_T) _nc_render (WINDOW *, NCURSES_CH_T);
2312 extern NCURSES_EXPORT(int) _nc_waddch_nosync (WINDOW *, const NCURSES_CH_T);
2313 extern NCURSES_EXPORT(void) _nc_scroll_window (WINDOW *, int const, int const, int const, NCURSES_CH_T);
2314 #endif
2315 
2316 #if USE_WIDEC_SUPPORT
2317 extern NCURSES_EXPORT(int) _nc_insert_wch(WINDOW *, const cchar_t *);
2318 #endif
2319 
2320 #if USE_WIDEC_SUPPORT && !(defined(USE_TERMLIB) || defined(USE_BUILD_CC))
2321 extern NCURSES_EXPORT(size_t) _nc_wcrtomb (char *, wchar_t, mbstate_t *);
2322 #endif
2323 
2324 #if USE_SIZECHANGE
2325 extern NCURSES_EXPORT(void) _nc_update_screensize (SCREEN *);
2326 #endif
2327 
2328 #if HAVE_RESIZETERM
2329 extern NCURSES_EXPORT(void) _nc_resize_margins (WINDOW *);
2330 #else
2331 #define _nc_resize_margins(wp) /* nothing */
2332 #endif
2333 
2334 #ifdef NCURSES_WGETCH_EVENTS
2335 extern NCURSES_EXPORT(int) _nc_eventlist_timeout(_nc_eventlist *);
2336 #else
2337 #define wgetch_events(win, evl) wgetch(win)
2338 #define wgetnstr_events(win, str, maxlen, evl) wgetnstr(win, str, maxlen)
2339 #endif
2340 
2341 /*
2342  * Wide-character macros to hide some platform-differences.
2343  */
2344 #if USE_WIDEC_SUPPORT
2345 
2346 #if defined(_WIN32)
2347 /*
2348  * MinGW has wide-character functions, but they do not work correctly.
2349  */
2350 
2351 extern int __MINGW_NOTHROW _nc_wctomb(char *, wchar_t);
2352 #define wctomb(s,wc) _nc_wctomb(s,wc)
2353 #define wcrtomb(s,wc,n) _nc_wctomb(s,wc)
2354 
2355 extern int __MINGW_NOTHROW _nc_mbtowc(wchar_t *, const char *, size_t);
2356 #define mbtowc(pwc,s,n) _nc_mbtowc(pwc,s,n)
2357 
2358 extern int __MINGW_NOTHROW _nc_mblen(const char *, size_t);
2359 #define mblen(s,n) _nc_mblen(s, n)
2360 
2361 #endif /* _WIN32 */
2362 
2363 #if HAVE_MBTOWC && HAVE_MBLEN
2364 #define reset_mbytes(state) IGNORE_RC(mblen(NULL, (size_t) 0)), IGNORE_RC(mbtowc(NULL, NULL, (size_t) 0))
2365 #define count_mbytes(buffer,length,state) mblen(buffer,length)
2366 #define check_mbytes(wch,buffer,length,state) \
2367 	(int) mbtowc(&wch, buffer, length)
2368 #define state_unused
2369 #elif HAVE_MBRTOWC && HAVE_MBRLEN
2370 #define reset_mbytes(state) init_mb(state)
2371 #define count_mbytes(buffer,length,state) mbrlen(buffer,length,&state)
2372 #define check_mbytes(wch,buffer,length,state) \
2373 	(int) mbrtowc(&wch, buffer, length, &state)
2374 #else
2375 make an error
2376 #endif
2377 
2378 #endif /* USE_WIDEC_SUPPORT */
2379 
2380 /*
2381  * Not everyone has vsscanf(), but we'd like to use it for scanw().
2382  */
2383 #if !HAVE_VSSCANF
2384 extern int vsscanf(const char *str, const char *format, va_list __arg);
2385 #endif
2386 
2387 /* scroll indices */
2388 extern NCURSES_EXPORT_VAR(int *) _nc_oldnums;
2389 
2390 #define USE_SETBUF_0 0
2391 
2392 #define NC_OUTPUT(sp) ((sp != 0 && sp->_ofp != 0) ? sp->_ofp : stdout)
2393 
2394 /*
2395  * On systems with a broken linker, define 'SP' as a function to force the
2396  * linker to pull in the data-only module with 'SP'.
2397  */
2398 #define _nc_alloc_screen_sp() typeCalloc(SCREEN, 1)
2399 
2400 #if BROKEN_LINKER
2401 #define SP _nc_screen()
2402 extern NCURSES_EXPORT(SCREEN *) _nc_screen (void);
2403 extern NCURSES_EXPORT(int)      _nc_alloc_screen (void);
2404 extern NCURSES_EXPORT(void)     _nc_set_screen (SCREEN *);
2405 #define CURRENT_SCREEN          _nc_screen()
2406 #else
2407 /* current screen is private data; avoid possible linking conflicts too */
2408 extern NCURSES_EXPORT_VAR(SCREEN *) SP;
2409 #define CURRENT_SCREEN SP
2410 #define _nc_alloc_screen()      ((SP = _nc_alloc_screen_sp()) != 0)
2411 #define _nc_set_screen(sp)      SP = sp
2412 #endif
2413 
2414 #if NCURSES_SP_FUNCS
2415 #define CURRENT_SCREEN_PRE      (IsPreScreen(CURRENT_SCREEN) ? CURRENT_SCREEN : new_prescr())
2416 #else
2417 #define CURRENT_SCREEN_PRE      CURRENT_SCREEN
2418 #endif
2419 
2420 /*
2421  * We don't want to use the lines or columns capabilities internally, because
2422  * if the application is running multiple screens under X, it's quite possible
2423  * they could all have type xterm but have different sizes!  So...
2424  */
2425 #define screen_lines(sp)        (sp)->_lines
2426 #define screen_columns(sp)      (sp)->_columns
2427 
2428 extern NCURSES_EXPORT(int) _nc_slk_initialize (WINDOW *, int);
2429 extern NCURSES_EXPORT(int) _nc_format_slks (NCURSES_SP_DCLx int _c);
2430 
2431 /*
2432  * Some constants related to SLK's
2433  */
2434 #define MAX_SKEY_OLD	   8	/* count of soft keys */
2435 #define MAX_SKEY_LEN_OLD   8	/* max length of soft key text */
2436 #define MAX_SKEY_PC       12    /* This is what most PC's have */
2437 #define MAX_SKEY_LEN_PC    5
2438 
2439 /* Macro to check whether or not we use a standard format */
2440 #define SLK_STDFMT(fmt) (fmt < 3)
2441 /* Macro to determine height of label window */
2442 #define SLK_LINES(fmt)  (SLK_STDFMT(fmt) ? 1 : ((fmt) - 2))
2443 
2444 #define MAX_SKEY(fmt)     (SLK_STDFMT(fmt)? MAX_SKEY_OLD : MAX_SKEY_PC)
2445 #define MAX_SKEY_LEN(fmt) (SLK_STDFMT(fmt)? MAX_SKEY_LEN_OLD : MAX_SKEY_LEN_PC)
2446 
2447 /*
2448  * Common error messages
2449  */
2450 #define MSG_NO_MEMORY "Out of memory"
2451 #define MSG_NO_INPUTS "Premature EOF"
2452 
2453 extern NCURSES_EXPORT(int) _nc_set_tty_mode(TTY *);
2454 extern NCURSES_EXPORT(int) _nc_get_tty_mode(TTY *);
2455 
2456 /* timed_wait flag definitions */
2457 #define TW_NONE    0
2458 #define TW_INPUT   1
2459 #define TW_MOUSE   2
2460 #define TW_ANY     (TW_INPUT | TW_MOUSE)
2461 #define TW_EVENT   4
2462 
2463 #define SetSafeOutcWrapper(outc)	    \
2464     SCREEN* sp = CURRENT_SCREEN;            \
2465     struct screen outc_wrapper;		    \
2466     if (sp==0) {                            \
2467 	sp = &outc_wrapper;                 \
2468 	memset(sp,0,sizeof(struct screen)); \
2469 	sp->_outch = _nc_outc_wrapper;      \
2470     }\
2471     sp->jump = outc
2472 
2473 #ifdef USE_TERM_DRIVER
2474 
2475 typedef struct _termInfo
2476 {
2477     bool caninit;
2478 
2479     bool hascolor;
2480     bool initcolor;
2481     bool canchange;
2482 
2483     int  tabsize;
2484 
2485     int  maxcolors;
2486     int  maxpairs;
2487     int  nocolorvideo;
2488 
2489     int  numbuttons;
2490     int  numlabels;
2491     int  labelwidth;
2492     int  labelheight;
2493 
2494     const color_t* defaultPalette;
2495 } TerminalInfo;
2496 
2497 typedef struct term_driver {
2498     bool   isTerminfo;
2499     const char* (*td_name)(struct DriverTCB*);
2500     bool   (*td_CanHandle)(struct DriverTCB*, const char*, int*);
2501     void   (*td_init)(struct DriverTCB*);
2502     void   (*td_release)(struct DriverTCB*);
2503     int    (*td_size)(struct DriverTCB*, int* Line, int *Cols);
2504     int    (*td_sgmode)(struct DriverTCB*, int setFlag, TTY*);
2505     chtype (*td_conattr)(struct DriverTCB*);
2506     int    (*td_hwcur)(struct DriverTCB*, int yold, int xold, int y, int x);
2507     int    (*td_mode)(struct DriverTCB*, int progFlag, int defFlag);
2508     bool   (*td_rescol)(struct DriverTCB*);
2509     bool   (*td_rescolors)(struct DriverTCB*);
2510     void   (*td_color)(struct DriverTCB*, int fore, int color, int(*)(SCREEN*, int));
2511     int    (*td_doBeepOrFlash)(struct DriverTCB*, int);
2512     void   (*td_initpair)(struct DriverTCB*, int, int, int);
2513     void   (*td_initcolor)(struct DriverTCB*, int, int, int, int);
2514     void   (*td_docolor)(struct DriverTCB*, int, int, int, int(*)(SCREEN*, int));
2515     void   (*td_initmouse)(struct DriverTCB*);
2516     int    (*td_testmouse)(struct DriverTCB*, int EVENTLIST_2nd(_nc_eventlist*));
2517     void   (*td_setfilter)(struct DriverTCB*);
2518     void   (*td_hwlabel)(struct DriverTCB*, int, char*);
2519     void   (*td_hwlabelOnOff)(struct DriverTCB*, int);
2520     int    (*td_update)(struct DriverTCB*);
2521     int    (*td_defaultcolors)(struct DriverTCB*, int, int);
2522     int    (*td_print)(struct DriverTCB*, char*, int);
2523     int    (*td_getsize)(struct DriverTCB*, int*, int*);
2524     int    (*td_setsize)(struct DriverTCB*, int, int);
2525     void   (*td_initacs)(struct DriverTCB*, chtype*, chtype*);
2526     void   (*td_scinit)(SCREEN *);
2527     void   (*td_scexit)(SCREEN *);
2528     int    (*td_twait)(struct DriverTCB*, int, int, int* EVENTLIST_2nd(_nc_eventlist*));
2529     int    (*td_read)(struct DriverTCB*, int*);
2530     int    (*td_nap)(struct DriverTCB*, int);
2531     int    (*td_kpad)(struct DriverTCB*, int);
2532     int    (*td_kyOk)(struct DriverTCB*, int, int);
2533     bool   (*td_kyExist)(struct DriverTCB*, int);
2534     int    (*td_cursorSet)(struct DriverTCB*, int);
2535 } TERM_DRIVER;
2536 
2537 typedef struct DriverTCB
2538 {
2539     TERMINAL      term;   /* needs to be the first Element !!! */
2540     TERM_DRIVER*  drv;    /* The driver for that Terminal */
2541     SCREEN*       csp;    /* The screen that owns that Terminal */
2542     TerminalInfo  info;   /* Driver independent core capabilities of the Terminal */
2543     void*         prop;   /* Driver dependent property storage to be used by the Driver */
2544     long          magic;
2545 } TERMINAL_CONTROL_BLOCK;
2546 
2547 #define NCDRV_MAGIC(id) (0x47110000 | (id&0xffff))
2548 #define NCDRV_TINFO      0x01
2549 #define NCDRV_WINCONSOLE 0x02
2550 
2551 #define TCBOf(sp)    ((TERMINAL_CONTROL_BLOCK*)(TerminalOf(sp)))
2552 #define InfoOf(sp)   TCBOf(sp)->info
2553 #define CallDriver(sp,method)                        TCBOf(sp)->drv->method(TCBOf(sp))
2554 #define CallDriver_1(sp,method,arg1)                 TCBOf(sp)->drv->method(TCBOf(sp),arg1)
2555 #define CallDriver_2(sp,method,arg1,arg2)            TCBOf(sp)->drv->method(TCBOf(sp),arg1,arg2)
2556 #define CallDriver_3(sp,method,arg1,arg2,arg3)       TCBOf(sp)->drv->method(TCBOf(sp),arg1,arg2,arg3)
2557 #define CallDriver_4(sp,method,arg1,arg2,arg3,arg4)  TCBOf(sp)->drv->method(TCBOf(sp),arg1,arg2,arg3,arg4)
2558 
2559 extern NCURSES_EXPORT_VAR(const color_t*) _nc_cga_palette;
2560 extern NCURSES_EXPORT_VAR(const color_t*) _nc_hls_palette;
2561 
2562 extern NCURSES_EXPORT(int)      _nc_get_driver(TERMINAL_CONTROL_BLOCK*, const char*, int*);
2563 extern NCURSES_EXPORT(void)     _nc_get_screensize_ex(SCREEN *, TERMINAL *, int *, int *);
2564 #endif /* USE_TERM_DRIVER */
2565 
2566 /*
2567  * Entrypoints which are actually provided in the terminal driver, which would
2568  * be an sp-name otherwise.
2569  */
2570 #ifdef USE_TERM_DRIVER
2571 #define TINFO_HAS_KEY           _nc_tinfo_has_key
2572 #define TINFO_DOUPDATE          _nc_tinfo_doupdate
2573 #define TINFO_MVCUR             _nc_tinfo_mvcur
2574 extern NCURSES_EXPORT(int)      TINFO_HAS_KEY(SCREEN*, int);
2575 extern NCURSES_EXPORT(int)      TINFO_DOUPDATE(SCREEN *);
2576 extern NCURSES_EXPORT(int)      TINFO_MVCUR(SCREEN*, int, int, int, int);
2577 #else
2578 #define TINFO_HAS_KEY           NCURSES_SP_NAME(has_key)
2579 #define TINFO_DOUPDATE          NCURSES_SP_NAME(doupdate)
2580 #define TINFO_MVCUR             NCURSES_SP_NAME(_nc_mvcur)
2581 #endif
2582 
2583 /*
2584  * Entrypoints using an extra parameter with the terminal driver.
2585  */
2586 #ifdef USE_TERM_DRIVER
2587 extern NCURSES_EXPORT(void)   _nc_get_screensize(SCREEN *, TERMINAL *, int *, int *);
2588 extern NCURSES_EXPORT(int)    _nc_setupterm_ex(TERMINAL **, const char *, int , int *, int);
2589 #define TINFO_GET_SIZE(sp, tp, lp, cp) \
2590 	_nc_get_screensize(sp, tp, lp, cp)
2591 #define TINFO_SET_CURTERM(sp, tp) \
2592 	NCURSES_SP_NAME(set_curterm)(sp, tp)
2593 #define TINFO_SETUP_TERM(tpp, name, fd, err, reuse) \
2594 	_nc_setupterm_ex(tpp, name, fd, err, reuse)
2595 #else /* !USE_TERM_DRIVER */
2596 extern NCURSES_EXPORT(void)   _nc_get_screensize(SCREEN *, int *, int *);
2597 #define TINFO_GET_SIZE(sp, tp, lp, cp) \
2598 	_nc_get_screensize(sp, lp, cp)
2599 #define TINFO_SET_CURTERM(sp, tp) \
2600 	set_curterm(tp)
2601 #define TINFO_SETUP_TERM(tpp, name, fd, err, reuse) \
2602 	_nc_setupterm(name, fd, err, reuse)
2603 #endif /* !USE_TERM_DRIVER */
2604 
2605 #ifdef USE_TERM_DRIVER
2606 #if defined(USE_WIN32CON_DRIVER)
2607 #include <nc_mingw.h>
2608 extern NCURSES_EXPORT_VAR(TERM_DRIVER) _nc_WIN_DRIVER;
2609 extern NCURSES_EXPORT(int)  _nc_mingw_isatty(int fd);
2610 extern NCURSES_EXPORT(int)  _nc_mingw_isconsole(int fd);
2611 extern NCURSES_EXPORT(int) _nc_mingw_console_read(
2612     SCREEN *sp,
2613     HANDLE  fd,
2614     int *buf);
2615 extern NCURSES_EXPORT(int) _nc_mingw_testmouse(
2616     SCREEN * sp,
2617     HANDLE fd,
2618     int delay EVENTLIST_2nd(_nc_eventlist*));
2619 #else
2620 #endif
2621 extern NCURSES_EXPORT_VAR(TERM_DRIVER) _nc_TINFO_DRIVER;
2622 #endif
2623 
2624 #if defined(USE_TERM_DRIVER) && defined(USE_WIN32CON_DRIVER)
2625 #define NC_ISATTY(fd) _nc_mingw_isatty(fd)
2626 #else
2627 #define NC_ISATTY(fd) isatty(fd)
2628 #endif
2629 
2630 #ifdef USE_TERM_DRIVER
2631 #  define IsTermInfo(sp)       ((TCBOf(sp) != 0) && ((TCBOf(sp)->drv->isTerminfo)))
2632 #  define HasTInfoTerminal(sp) ((0 != TerminalOf(sp)) && IsTermInfo(sp))
2633 #  if defined(USE_WIN32CON_DRIVER)
2634 #    define IsTermInfoOnConsole(sp) (IsTermInfo(sp)&&_nc_mingw_isconsole(TerminalOf(sp)->Filedes))
2635 #else
2636 #    define IsTermInfoOnConsole(sp) FALSE
2637 #  endif
2638 #else
2639 #  define IsTermInfo(sp)       TRUE
2640 #  define HasTInfoTerminal(sp) (0 != TerminalOf(sp))
2641 #  define IsTermInfoOnConsole(sp) FALSE
2642 #endif
2643 
2644 #define IsValidTIScreen(sp)  (HasTInfoTerminal(sp))
2645 
2646 /*
2647  * Exported entrypoints beyond the published API
2648  */
2649 #if NCURSES_SP_FUNCS
2650 extern NCURSES_EXPORT(WINDOW *) _nc_curscr_of(SCREEN*);
2651 extern NCURSES_EXPORT(WINDOW *) _nc_newscr_of(SCREEN*);
2652 extern NCURSES_EXPORT(WINDOW *) _nc_stdscr_of(SCREEN*);
2653 extern NCURSES_EXPORT(int)      _nc_outc_wrapper(SCREEN*,int);
2654 
2655 #if USE_REENTRANT
2656 extern NCURSES_EXPORT(int)       NCURSES_SP_NAME(_nc_TABSIZE)(SCREEN*);
2657 extern NCURSES_EXPORT(char *)    NCURSES_SP_NAME(longname)(SCREEN*);
2658 #endif
2659 
2660 #if NCURSES_EXT_FUNCS
2661 extern NCURSES_EXPORT(int)      NCURSES_SP_NAME(_nc_set_tabsize)(SCREEN*, int);
2662 #endif
2663 
2664 /*
2665  * We put the safe versions of various calls here as they are not published
2666  * part of the API up to now
2667  */
2668 extern NCURSES_EXPORT(TERMINAL*) NCURSES_SP_NAME(_nc_get_cur_term) (SCREEN *sp);
2669 extern NCURSES_EXPORT(WINDOW *) NCURSES_SP_NAME(_nc_makenew) (SCREEN*, int, int, int, int, int);
2670 extern NCURSES_EXPORT(bool)     NCURSES_SP_NAME(_nc_reset_colors)(SCREEN*);
2671 extern NCURSES_EXPORT(char *)   NCURSES_SP_NAME(_nc_printf_string)(SCREEN*, const char *, va_list);
2672 extern NCURSES_EXPORT(chtype)   NCURSES_SP_NAME(_nc_acs_char)(SCREEN*,int);
2673 extern NCURSES_EXPORT(int)      NCURSES_SP_NAME(_nc_get_tty_mode)(SCREEN*,TTY*);
2674 extern NCURSES_EXPORT(int)      NCURSES_SP_NAME(_nc_mcprint)(SCREEN*,char*, int);
2675 extern NCURSES_EXPORT(int)      NCURSES_SP_NAME(_nc_msec_cost)(SCREEN*, const char *, int);
2676 extern NCURSES_EXPORT(int)      NCURSES_SP_NAME(_nc_mvcur)(SCREEN*, int, int, int, int);
2677 extern NCURSES_EXPORT(int)      NCURSES_SP_NAME(_nc_outch)(SCREEN*, int);
2678 extern NCURSES_EXPORT(int)      NCURSES_SP_NAME(_nc_putchar)(SCREEN*, int);
2679 extern NCURSES_EXPORT(int)      NCURSES_SP_NAME(_nc_putp)(SCREEN*, const char *, const char*);
2680 extern NCURSES_EXPORT(int)      NCURSES_SP_NAME(_nc_putp_flush)(SCREEN*, const char *, const char *);
2681 extern NCURSES_EXPORT(int)      NCURSES_SP_NAME(_nc_ripoffline)(SCREEN*, int, int (*)(WINDOW *,int));
2682 extern NCURSES_EXPORT(int)      NCURSES_SP_NAME(_nc_scrolln)(SCREEN*, int, int, int, int);
2683 extern NCURSES_EXPORT(int)      NCURSES_SP_NAME(_nc_set_tty_mode)(SCREEN*, TTY*);
2684 extern NCURSES_EXPORT(int)      NCURSES_SP_NAME(_nc_setupscreen)(SCREEN**, int, int, FILE *, int, int);
2685 extern NCURSES_EXPORT(int)      NCURSES_SP_NAME(_nc_tgetent)(SCREEN*,char*,const char *);
2686 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_do_color)(SCREEN*, int, int, int, NCURSES_SP_OUTC);
2687 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_do_xmc_glitch)(SCREEN*, attr_t);
2688 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_flush)(SCREEN*);
2689 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_free_and_exit)(SCREEN*, int) GCC_NORETURN;
2690 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_freeall)(SCREEN*);
2691 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_hash_map)(SCREEN*);
2692 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_init_acs)(SCREEN*);
2693 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_make_oldhash)(SCREEN*, int i);
2694 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_mvcur_init)(SCREEN*);
2695 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_mvcur_resume)(SCREEN*);
2696 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_mvcur_wrap)(SCREEN*);
2697 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_screen_init)(SCREEN*);
2698 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_screen_resume)(SCREEN*);
2699 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_screen_wrap)(SCREEN*);
2700 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_scroll_oldhash)(SCREEN*, int n, int top, int bot);
2701 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_scroll_optimize)(SCREEN*);
2702 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_set_buffer)(SCREEN*, FILE *, int);
2703 
2704 extern NCURSES_EXPORT(void)     _nc_cookie_init(SCREEN *sp);
2705 
2706 #if defined(TRACE) || defined(SCROLLDEBUG) || defined(HASHDEBUG)
2707 extern NCURSES_EXPORT(void)     NCURSES_SP_NAME(_nc_linedump)(SCREEN*);
2708 #endif
2709 
2710 #if USE_WIDEC_SUPPORT
2711 extern NCURSES_EXPORT(wchar_t *) NCURSES_SP_NAME(_nc_wunctrl)(SCREEN*, cchar_t *);
2712 #endif
2713 
2714 #endif /* NCURSES_SP_FUNCS */
2715 
2716 #if NCURSES_SP_FUNCS
2717 
2718 #define safe_keyname NCURSES_SP_NAME(keyname)
2719 #define safe_unctrl  NCURSES_SP_NAME(unctrl)
2720 #define safe_ungetch NCURSES_SP_NAME(ungetch)
2721 
2722 #else
2723 
2724 #define safe_keyname _nc_keyname
2725 #define safe_unctrl  _nc_unctrl
2726 #define safe_ungetch _nc_ungetch
2727 
2728 extern NCURSES_EXPORT(NCURSES_CONST char *) _nc_keyname (SCREEN *, int);
2729 extern NCURSES_EXPORT(int) _nc_ungetch (SCREEN *, int);
2730 extern NCURSES_EXPORT(NCURSES_CONST char *) _nc_unctrl (SCREEN *, chtype);
2731 
2732 #endif
2733 
2734 #ifdef EXP_XTERM_1005
2735 NCURSES_EXPORT(int) _nc_conv_to_utf8(unsigned char *, unsigned, unsigned);
2736 NCURSES_EXPORT(int) _nc_conv_to_utf32(unsigned *, const char *, unsigned);
2737 #endif
2738 
2739 #ifdef __cplusplus
2740 }
2741 #endif
2742 
2743 /* *INDENT-ON* */
2744 
2745 #endif /* CURSES_PRIV_H */
2746