curses_p.h

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extern NCURSES_EXPORT(void)             _nc_fifo_dump (void);
extern NCURSES_EXPORT_VAR(const char *) _nc_tputs_trace;
extern NCURSES_EXPORT_VAR(long)         _nc_outchars;
extern NCURSES_EXPORT_VAR(unsigned)     _nc_tracing;

#if USE_WIDEC_SUPPORT
extern NCURSES_EXPORT(const char *) _nc_viswbuf2 (int, const wchar_t *);
extern NCURSES_EXPORT(const char *) _nc_viswbufn (const wchar_t *, int);
extern NCURSES_EXPORT(const char *) _nc_viscbuf2 (int, const cchar_t *, int);
extern NCURSES_EXPORT(const char *) _nc_viscbuf (const cchar_t *, int);
#endif

#else /* !TRACE */

#define START_TRACE() /* nothing */

#define T(a)
#define TR(n, a)
#define TPUTS_TRACE(s)

#define returnAttr(code) return code
#define returnBits(code) return code
#define returnBool(code) return code
#define returnChar(code) return code
#define returnCode(code) return code
#define returnPtr(code)  return code
#define returnSP(code)   return code
#define returnVoid       return
#define returnWin(code)  return code

#endif /* TRACE/!TRACE */

extern NCURSES_EXPORT(const char *) _nc_visbuf2 (int, const char *);
extern NCURSES_EXPORT(const char *) _nc_visbufn (const char *, int);

#define empty_module(name) \
extern	NCURSES_EXPORT(void) name (void); \
	NCURSES_EXPORT(void) name (void) { }

#define ALL_BUT_COLOR ((chtype)~(A_COLOR))
#define IGNORE_COLOR_OFF FALSE
#define NONBLANK_ATTR (A_BOLD|A_DIM|A_BLINK)
#define XMC_CHANGES(c) ((c) & SP->_xmc_suppress)

#define toggle_attr_on(S,at) {\
   if (PAIR_NUMBER(at) > 0)\
      (S) = ((S) & ALL_BUT_COLOR) | (at);\
   else\
      (S) |= (at);\
   TR(TRACE_ATTRS, ("new attribute is %s", _traceattr((S))));}


#define toggle_attr_off(S,at) {\
   if (IGNORE_COLOR_OFF == TRUE) {\
      if (PAIR_NUMBER(at) == 0xff) /* turn off color */\
	 (S) &= ~(at);\
      else /* leave color alone */\
	 (S) &= ~((at)&ALL_BUT_COLOR);\
   } else {\
      if (PAIR_NUMBER(at) > 0x00) /* turn off color */\
	 (S) &= ~(at|A_COLOR);\
      else /* leave color alone */\
	 (S) &= ~(at);\
   }\
   TR(TRACE_ATTRS, ("new attribute is %s", _traceattr((S))));}

#define DelCharCost(count) \
		((parm_dch != 0) \
		? SP->_dch_cost \
		: ((delete_character != 0) \
			? (SP->_dch1_cost * count) \
			: INFINITY))

#define InsCharCost(count) \
		((parm_ich != 0) \
		? SP->_ich_cost \
		: ((enter_insert_mode && exit_insert_mode) \
		  ? SP->_smir_cost + SP->_rmir_cost + (SP->_ip_cost * count) \
		  : ((insert_character != 0) \
		    ? (SP->_ich1_cost * count) \
		    : INFINITY)))

#if USE_XMC_SUPPORT
#define UpdateAttrs(a)	if (SP->_current_attr != (a)) { \
				attr_t chg = SP->_current_attr; \
				vidattr((a)); \
				if (magic_cookie_glitch > 0 \
				 && XMC_CHANGES((chg ^ SP->_current_attr))) { \
					T(("%s @%d before glitch %d,%d", \
						__FILE__, __LINE__, \
						SP->_cursrow, \
						SP->_curscol)); \
					_nc_do_xmc_glitch(chg); \
				} \
			}
#else
#define UpdateAttrs(a)	if (SP->_current_attr != (a)) \
				vidattr((a));
#endif

/*
 * Macros to make additional parameter to implement wgetch_events()
 */
#ifdef NCURSES_WGETCH_EVENTS
#define EVENTLIST_0th(param) param
#define EVENTLIST_1st(param) param
#define EVENTLIST_2nd(param) , param
#else
#define EVENTLIST_0th(param) void
#define EVENTLIST_1st(param) /* nothing */
#define EVENTLIST_2nd(param) /* nothing */
#endif

#if NCURSES_EXPANDED && NCURSES_EXT_FUNCS

#undef  toggle_attr_on
#define toggle_attr_on(S,at) _nc_toggle_attr_on(&(S), at)
extern NCURSES_EXPORT(void) _nc_toggle_attr_on (attr_t *, attr_t);

#undef  toggle_attr_off
#define toggle_attr_off(S,at) _nc_toggle_attr_off(&(S), at)
extern NCURSES_EXPORT(void) _nc_toggle_attr_off (attr_t *, attr_t);

#undef  DelCharCost
#define DelCharCost(count) _nc_DelCharCost(count)
extern NCURSES_EXPORT(int) _nc_DelCharCost (int);

#undef  InsCharCost
#define InsCharCost(count) _nc_InsCharCost(count)
extern NCURSES_EXPORT(int) _nc_InsCharCost (int);

#undef  UpdateAttrs
#define UpdateAttrs(c) _nc_UpdateAttrs(c)
extern NCURSES_EXPORT(void) _nc_UpdateAttrs (chtype);

#else

extern NCURSES_EXPORT(void) _nc_expanded (void);

#endif

#if !HAVE_GETCWD
#define getcwd(buf,len) getwd(buf)
#endif

/* doupdate.c */
#if USE_XMC_SUPPORT
extern NCURSES_EXPORT(void) _nc_do_xmc_glitch (attr_t);
#endif

/* hardscroll.c */
#if defined(TRACE) || defined(SCROLLDEBUG) || defined(HASHDEBUG)
extern NCURSES_EXPORT(void) _nc_linedump (void);
#endif

/* lib_acs.c */
extern NCURSES_EXPORT(void) _nc_init_acs (void);	/* corresponds to traditional 'init_acs()' */
extern NCURSES_EXPORT(int) _nc_msec_cost (const char *const, int);  /* used by 'tack' program */

/* lib_addstr.c */
#if USE_WIDEC_SUPPORT
extern NCURSES_EXPORT(int) _nc_wchstrlen(const cchar_t *);
#endif

/* lib_color.c */
extern NCURSES_EXPORT(bool) _nc_reset_colors(void);

/* lib_getch.c */
extern NCURSES_EXPORT(int) _nc_wgetch(WINDOW *, unsigned long *, int EVENTLIST_2nd(_nc_eventlist *));

/* lib_mvcur.c */
#define INFINITY	1000000	/* cost: too high to use */

extern NCURSES_EXPORT(void) _nc_mvcur_init (void);
extern NCURSES_EXPORT(void) _nc_mvcur_resume (void);
extern NCURSES_EXPORT(void) _nc_mvcur_wrap (void);

extern NCURSES_EXPORT(int) _nc_scrolln (int, int, int, int);

extern NCURSES_EXPORT(void) _nc_screen_init (void);
extern NCURSES_EXPORT(void) _nc_screen_resume (void);
extern NCURSES_EXPORT(void) _nc_screen_wrap (void);

/* lib_mouse.c */
extern NCURSES_EXPORT(int) _nc_has_mouse (void);

/* lib_mvcur.c */
#define INFINITY	1000000	/* cost: too high to use */

/* lib_wacs.c */
#if USE_WIDEC_SUPPORT
extern NCURSES_EXPORT(void) _nc_init_wacs(void);
#endif

typedef struct {
    char *s_head;
    char *s_tail;
    size_t s_size;
} string_desc;

/* strings.c */
extern NCURSES_EXPORT(string_desc *) _nc_str_init (string_desc *, char *, size_t);
extern NCURSES_EXPORT(string_desc *) _nc_str_null (string_desc *, size_t);
extern NCURSES_EXPORT(string_desc *) _nc_str_copy (string_desc *, string_desc *);
extern NCURSES_EXPORT(bool) _nc_safe_strcat (string_desc *, const char *);
extern NCURSES_EXPORT(bool) _nc_safe_strcpy (string_desc *, const char *);

extern NCURSES_EXPORT(void) _nc_mvcur_init (void);
extern NCURSES_EXPORT(void) _nc_mvcur_resume (void);
extern NCURSES_EXPORT(void) _nc_mvcur_wrap (void);

extern NCURSES_EXPORT(int) _nc_scrolln (int, int, int, int);

extern NCURSES_EXPORT(void) _nc_screen_init (void);
extern NCURSES_EXPORT(void) _nc_screen_resume (void);
extern NCURSES_EXPORT(void) _nc_screen_wrap (void);

#if !HAVE_STRSTR
#define strstr _nc_strstr
extern NCURSES_EXPORT(char *) _nc_strstr (const char *, const char *);
#endif

/* safe_sprintf.c */
extern NCURSES_EXPORT(char *) _nc_printf_string (const char *, va_list);

/* tries.c */
extern NCURSES_EXPORT(void) _nc_add_to_try (struct tries **, const char *, unsigned short);
extern NCURSES_EXPORT(char *) _nc_expand_try (struct tries *, unsigned short, int *, size_t);
extern NCURSES_EXPORT(int) _nc_remove_key (struct tries **, unsigned short);
extern NCURSES_EXPORT(int) _nc_remove_string (struct tries **, char *);

/* elsewhere ... */
extern NCURSES_EXPORT(WINDOW *) _nc_makenew (int, int, int, int, int);
extern NCURSES_EXPORT(char *) _nc_home_terminfo (void);
extern NCURSES_EXPORT(char *) _nc_trace_buf (int, size_t);
extern NCURSES_EXPORT(NCURSES_CH_T) _nc_render (WINDOW *, NCURSES_CH_T);
extern NCURSES_EXPORT(int)  _nc_access (const char *, int);
extern NCURSES_EXPORT(int) _nc_baudrate (int);
extern NCURSES_EXPORT(int) _nc_freewin (WINDOW *);
extern NCURSES_EXPORT(int) _nc_getenv_num (const char *);
extern NCURSES_EXPORT(int) _nc_keypad (bool);
extern NCURSES_EXPORT(int) _nc_ospeed (int);
extern NCURSES_EXPORT(int) _nc_outch (int);
extern NCURSES_EXPORT(int) _nc_setupscreen (short, short const, FILE *);
extern NCURSES_EXPORT(int) _nc_timed_wait(int, int, int * EVENTLIST_2nd(_nc_eventlist *));
extern NCURSES_EXPORT(int) _nc_waddch_nosync (WINDOW *, const NCURSES_CH_T);
extern NCURSES_EXPORT(void) _nc_do_color (int, int, bool, int (*)(int));
extern NCURSES_EXPORT(void) _nc_flush (void);
extern NCURSES_EXPORT(void) _nc_freeall (void);
extern NCURSES_EXPORT(void) _nc_hash_map (void);
extern NCURSES_EXPORT(void) _nc_init_keytry (void);
extern NCURSES_EXPORT(void) _nc_keep_tic_dir (const char *);
extern NCURSES_EXPORT(void) _nc_make_oldhash (int i);
extern NCURSES_EXPORT(void) _nc_outstr (const char *str);
extern NCURSES_EXPORT(void) _nc_scroll_oldhash (int n, int top, int bot);
extern NCURSES_EXPORT(void) _nc_scroll_optimize (void);
extern NCURSES_EXPORT(void) _nc_scroll_window (WINDOW *, int const, short const, short const, NCURSES_CH_T);
extern NCURSES_EXPORT(void) _nc_set_buffer (FILE *, bool);
extern NCURSES_EXPORT(void) _nc_signal_handler (bool);
extern NCURSES_EXPORT(void) _nc_synchook (WINDOW *);
extern NCURSES_EXPORT(void) _nc_trace_tries (struct tries *);

#if USE_SIZECHANGE
extern NCURSES_EXPORT(void) _nc_update_screensize (void);
#endif

#if HAVE_RESIZETERM
extern NCURSES_EXPORT(void) _nc_resize_margins (WINDOW *);
#else
#define _nc_resize_margins(wp) /* nothing */
#endif

#ifdef NCURSES_WGETCH_EVENTS
extern NCURSES_EXPORT(int) _nc_eventlist_timeout(_nc_eventlist *);
#else
#define wgetch_events(win, evl) wgetch(win)
#define wgetnstr_events(win, str, maxlen, evl) wgetnstr(win, str, maxlen)
#endif

/*
 * Not everyone has vsscanf(), but we'd like to use it for scanw().
 */
#if !HAVE_VSSCANF
extern int vsscanf(const char *str, const char *format, va_list __arg);
#endif

/* scroll indices */
extern NCURSES_EXPORT_VAR(int *) _nc_oldnums;

#define USE_SETBUF_0 0

#define NC_BUFFERED(flag) \
	if ((SP->_buffered != 0) != flag) \
		_nc_set_buffer(SP->_ofp, flag)

#define NC_OUTPUT stdout

/*
 * On systems with a broken linker, define 'SP' as a function to force the
 * linker to pull in the data-only module with 'SP'.
 */
#if BROKEN_LINKER
#define SP _nc_screen()
extern NCURSES_EXPORT(SCREEN *) _nc_screen (void);
extern NCURSES_EXPORT(int) _nc_alloc_screen (void);
extern NCURSES_EXPORT(void) _nc_set_screen (SCREEN *);
#else
/* current screen is private data; avoid possible linking conflicts too */
extern NCURSES_EXPORT_VAR(SCREEN *) SP;
#define _nc_alloc_screen() ((SP = typeCalloc(SCREEN, 1)) != 0)
#define _nc_set_screen(sp) SP = sp
#endif

/*
 * We don't want to use the lines or columns capabilities internally, because
 * if the application is running multiple screens under X, it's quite possible
 * they could all have type xterm but have different sizes!  So...
 */
#define screen_lines	SP->_lines
#define screen_columns	SP->_columns

extern NCURSES_EXPORT_VAR(int) _nc_slk_format;  /* != 0 if slk_init() called */
extern NCURSES_EXPORT(int) _nc_slk_initialize (WINDOW *, int);

/*
 * Some constants related to SLK's
 */
#define MAX_SKEY_OLD	   8	/* count of soft keys */
#define MAX_SKEY_LEN_OLD   8	/* max length of soft key text */
#define MAX_SKEY_PC       12    /* This is what most PC's have */
#define MAX_SKEY_LEN_PC    5

/* Macro to check whether or not we use a standard format */
#define SLK_STDFMT(fmt) (fmt < 3)
/* Macro to determine height of label window */
#define SLK_LINES(fmt)  (SLK_STDFMT(fmt) ? 1 : ((fmt) - 2))

#define MAX_SKEY(fmt)     (SLK_STDFMT(fmt)? MAX_SKEY_OLD : MAX_SKEY_PC)
#define MAX_SKEY_LEN(fmt) (SLK_STDFMT(fmt)? MAX_SKEY_LEN_OLD : MAX_SKEY_LEN_PC)

extern NCURSES_EXPORT(int) _nc_ripoffline (int line, int (*init)(WINDOW *,int));

/*
 * Common error messages
 */
#define MSG_NO_MEMORY "Out of memory"
#define MSG_NO_INPUTS "Premature EOF"

#ifdef __cplusplus
}
#endif

#endif /* CURSES_PRIV_H */