libpayload: Add PDCurses and ncurses' libform/libmenu

PDCurses provides an alternative implementation of the curses library
standard in addition to tinycurses.
Where tinycurses is really tiny, PDCurses is more complete and provides
virtually unlimited windows and the full API.
The PDCurses code is brought in "vanilla", with all local changes
residing in curses/pdcurses-backend/

In addition to a curses library, this change also provides libpanel (as
part of the PDCurses code), and libform and libmenu which were derived
from ncurses-5.9.
As they rely on ncurses internals (and PDCurses is not ncurses), more
changes were required for these libraries to work.

The build system is extended to install the right set of header files
depending on the selected curses implementation.

Change-Id: I9e5b920f94b6510da01da2f656196a993170d1c5
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/106
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>

1 files changed, 1317 insertions, 0 deletions

diff --git a/payloads/libpayload/curses/curses.priv.h b/payloads/libpayload/curses/curses.priv.h
new file mode 100644
index 0000000000..78b7ff3cc9
--- /dev/null
+++ b/payloads/libpayload/curses/curses.priv.h
@@ -0,0 +1,1317 @@
+/****************************************************************************
+ * Copyright (c) 1998-2005,2006 Free Software Foundation, Inc.              *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
+ *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
+ *     and: Thomas E. Dickey                        1996-on                 *
+ ****************************************************************************/
+
+
+/*
+ * $Id: curses.priv.h,v 1.314 2006/12/10 00:55:14 tom Exp $
+ *
+ *	curses.priv.h
+ *
+ *	Header file for curses library objects which are private to
+ *	the library.
+ *
+ */
+
+#ifndef _CURSES_PRIV_H
+#define _CURSES_PRIV_H 1
+
+//// #include <ncurses_dll.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+//// #include <ncurses_cfg.h>
+
+#if USE_RCS_IDS
+#define MODULE_ID(id) static const char Ident[] = id;
+#else
+#define MODULE_ID(id) /*nothing*/
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+//// #if HAVE_SYS_BSDTYPES_H
+//// #include <sys/bsdtypes.h>	/* needed for ISC */
+//// #endif
+
+#if HAVE_LIMITS_H
+# include <limits.h>
+//// #elif HAVE_SYS_PARAM_H
+//// # include <sys/param.h>
+#endif
+////
+//// #include <assert.h>
+#include <stdio.h>
+
+#include <errno.h>
+
+#if DECL_ERRNO
+extern int errno;
+#endif
+
+//// #include <nc_panel.h>
+////
+//// /* Some systems have a broken 'select()', but workable 'poll()'.  Use that */
+//// #if HAVE_WORKING_POLL
+//// #define USE_FUNC_POLL 1
+//// #if HAVE_POLL_H
+//// #include <poll.h>
+//// #else
+//// #include <sys/poll.h>
+//// #endif
+//// #else
+//// #define USE_FUNC_POLL 0
+//// #endif
+////
+//// /* include signal.h before curses.h to work-around defect in glibc 2.1.3 */
+//// #include <signal.h>
+
+/* Alessandro Rubini's GPM (general-purpose mouse) */
+#if HAVE_LIBGPM && HAVE_GPM_H
+#define USE_GPM_SUPPORT 1
+#else
+#define USE_GPM_SUPPORT 0
+#endif
+
+/* QNX mouse support */
+#if defined(__QNX__) && !defined(__QNXNTO__)
+#define USE_QNX_MOUSE 1
+#else
+#define USE_QNX_MOUSE 0
+#endif
+
+/* EMX mouse support */
+#ifdef __EMX__
+#define USE_EMX_MOUSE 1
+#else
+#define USE_EMX_MOUSE 0
+#endif
+
+#define DEFAULT_MAXCLICK 166
+#define EV_MAX		8	/* size of mouse circular event queue */
+
+/*
+ * If we don't have signals to support it, don't add a sigwinch handler.
+ * In any case, resizing is an extended feature.  Use it if we've got it.
+ */
+#if !NCURSES_EXT_FUNCS
+#undef HAVE_SIZECHANGE
+#define HAVE_SIZECHANGE 0
+#endif
+
+#if HAVE_SIZECHANGE && defined(SIGWINCH)
+#define USE_SIZECHANGE 1
+#else
+#define USE_SIZECHANGE 0
+#undef USE_SIGWINCH
+#define USE_SIGWINCH 0
+#endif
+
+/*
+ * If desired, one can configure this, disabling environment variables that
+ * point to custom terminfo/termcap locations.
+ */
+#ifdef USE_ROOT_ENVIRON
+#define use_terminfo_vars() 1
+#else
+#define use_terminfo_vars() _nc_env_access()
+extern NCURSES_EXPORT(int) _nc_env_access (void);
+#endif
+
+/*
+ * Not all platforms have memmove; some have an equivalent bcopy.  (Some may
+ * have neither).
+ */
+#if USE_OK_BCOPY
+#define memmove(d,s,n) bcopy(s,d,n)
+#elif USE_MY_MEMMOVE
+#define memmove(d,s,n) _nc_memmove(d,s,n)
+extern NCURSES_EXPORT(void *) _nc_memmove (void *, const void *, size_t);
+#endif
+
+/*
+ * Scroll hints are useless when hashmap is used
+ */
+//// #if !USE_SCROLL_HINTS
+//// #if !USE_HASHMAP
+//// #define USE_SCROLL_HINTS 1
+//// #else
+//// #define USE_SCROLL_HINTS 0
+//// #endif
+//// #endif
+
+#if USE_SCROLL_HINTS
+#define if_USE_SCROLL_HINTS(stmt) stmt
+#else
+#define if_USE_SCROLL_HINTS(stmt) /*nothing*/
+#endif
+
+/*
+ * Note:  ht/cbt expansion flakes out randomly under Linux 1.1.47, but only
+ * when we're throwing control codes at the screen at high volume.  To see
+ * this, re-enable USE_HARD_TABS and run worm for a while.  Other systems
+ * probably don't want to define this either due to uncertainties about tab
+ * delays and expansion in raw mode.
+ */
+
+struct tries {
+	struct tries    *child;     /* ptr to child.  NULL if none          */
+	struct tries    *sibling;   /* ptr to sibling.  NULL if none        */
+	unsigned char    ch;        /* character at this node               */
+	unsigned short   value;     /* code of string so far.  0 if none.   */
+};
+
+/*
+ * Common/troublesome character definitions
+ */
+#define L_BRACE '{'
+#define R_BRACE '}'
+#define S_QUOTE '\''
+#define D_QUOTE '"'
+
+#define VT_ACSC "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~"
+
+/*
+ * Structure for palette tables
+ */
+
+typedef struct
+{
+    short red, green, blue;	/* what color_content() returns */
+    short r, g, b;		/* params to init_color() */
+    int init;			/* true if we called init_color() */
+}
+color_t;
+
+#define MAXCOLUMNS    135
+#define MAXLINES      66
+#define FIFO_SIZE     MAXCOLUMNS+2  /* for nocbreak mode input */
+
+#define ACS_LEN       128
+
+#define WINDOWLIST struct _win_list
+
+#if USE_WIDEC_SUPPORT
+#define _nc_bkgd    _bkgrnd
+#else
+#undef _XOPEN_SOURCE_EXTENDED
+#define _nc_bkgd    _bkgd
+#define wgetbkgrnd(win, wch)	*wch = win->_bkgd
+#define wbkgrnd	    wbkgd
+#endif
+
+//// #include <curses.h>	/* we'll use -Ipath directive to get the right one! */
+//// #include <term.h>
+//// #include <term_entry.h>
+//// #include <nc_tparm.h>
+
+#if NCURSES_EXT_COLORS && USE_WIDEC_SUPPORT
+#define if_EXT_COLORS(stmt)	stmt
+#define NetPair(value,p)	(value).ext_color = (p), \
+				AttrOf(value) &= ALL_BUT_COLOR, \
+				AttrOf(value) |= (A_COLOR & COLOR_PAIR((p > 255) ? 255 : p))
+#define SetPair(value,p)	(value).ext_color = (p)
+#define GetPair(value)		(value).ext_color
+#define unColor(n)		(AttrOf(n) & ALL_BUT_COLOR)
+#define GET_WINDOW_PAIR(w)	(w)->_color
+#define SET_WINDOW_PAIR(w,p)	(w)->_color = (p)
+#define SameAttrOf(a,b)		(AttrOf(a) == AttrOf(b) && GetPair(a) == GetPair(b))
+#define VIDATTR(attr, pair)	vid_attr(attr, pair, 0)
+#else
+#define if_EXT_COLORS(stmt)	/* nothing */
+#define SetPair(value,p)	RemAttr(value, A_COLOR), \
+				SetAttr(value, AttrOf(value) | (A_COLOR & COLOR_PAIR(p)))
+#define GetPair(value)		PAIR_NUMBER(AttrOf(value))
+#define unColor(n)		(AttrOf(n) & ALL_BUT_COLOR)
+#define GET_WINDOW_PAIR(w)	PAIR_NUMBER(WINDOW_ATTRS(w))
+#define SET_WINDOW_PAIR(w,p)	WINDOW_ATTRS(w) &= ALL_BUT_COLOR, \
+				WINDOW_ATTRS(w) |= (A_COLOR & COLOR_PAIR(p))
+#define SameAttrOf(a,b)		(AttrOf(a) == AttrOf(b))
+#define VIDATTR(attr, pair)	vidattr(attr)
+#endif
+
+#define WINDOW_ATTRS(w)		((w)->_attrs)
+
+#define SCREEN_ATTRS(s)		(*((s)->_current_attr))
+#define GET_SCREEN_PAIR(s)	GetPair(SCREEN_ATTRS(s))
+#define SET_SCREEN_PAIR(s,p)	SetPair(SCREEN_ATTRS(s), p)
+
+/*
+ * Definitions for color pairs
+ */
+typedef unsigned colorpair_t;	/* type big enough to store PAIR_OF() */
+#define C_SHIFT 9		/* we need more bits than there are colors */
+#define C_MASK			((1 << C_SHIFT) - 1)
+#define PAIR_OF(fg, bg)		((((fg) & C_MASK) << C_SHIFT) | ((bg) & C_MASK))
+#define isDefaultColor(c)	((c) >= COLOR_DEFAULT || (c) < 0)
+
+#define COLOR_DEFAULT		C_MASK
+
+#if defined(USE_TERMLIB) && !defined(NEED_NCURSES_CH_T)
+
+#undef NCURSES_CH_T		/* this is not a termlib feature */
+#define NCURSES_CH_T void	/* ...but we need a pointer in SCREEN */
+
+#endif	/* USE_TERMLIB */
+
+#ifndef USE_TERMLIB
+struct ldat
+{
+	NCURSES_CH_T	*text;		/* text of the line */
+	NCURSES_SIZE_T	firstchar;	/* first changed character in the line */
+	NCURSES_SIZE_T	lastchar;	/* last changed character in the line */
+	NCURSES_SIZE_T	oldindex;	/* index of the line at last update */
+};
+#endif	/* USE_TERMLIB */
+
+typedef enum {
+	M_XTERM	= -1		/* use xterm's mouse tracking? */
+	,M_NONE = 0		/* no mouse device */
+#if USE_GPM_SUPPORT
+	,M_GPM			/* use GPM */
+#endif
+#if USE_SYSMOUSE
+	,M_SYSMOUSE		/* FreeBSD sysmouse on console */
+#endif
+} MouseType;
+
+/*
+ * Structures for scrolling.
+ */
+
+typedef struct {
+	unsigned long hashval;
+	int oldcount, newcount;
+	int oldindex, newindex;
+} HASHMAP;
+
+/*
+ * Structures for soft labels.
+ */
+
+struct _SLK;
+
+#ifndef USE_TERMLIB
+
+typedef struct
+{
+	char *ent_text;		/* text for the label */
+	char *form_text;	/* formatted text (left/center/...) */
+	int ent_x;		/* x coordinate of this field */
+	char dirty;		/* this label has changed */
+	char visible;		/* field is visible */
+} slk_ent;
+
+typedef struct _SLK {
+	char dirty;		/* all labels have changed */
+	char hidden;		/* soft labels are hidden */
+	WINDOW *win;
+	slk_ent *ent;
+	short  maxlab;		/* number of available labels */
+	short  labcnt;		/* number of allocated labels */
+	short  maxlen;		/* length of labels */
+	NCURSES_CH_T attr;	/* soft label attribute */
+} SLK;
+
+#endif	/* USE_TERMLIB */
+
+typedef	struct {
+	int	line;		/* lines to take, < 0 => from bottom*/
+	int	(*hook)(WINDOW *, int); /* callback for user	    */
+	WINDOW *w;		/* maybe we need this for cleanup   */
+} ripoff_t;
+
+#if USE_GPM_SUPPORT
+#undef buttons			/* term.h defines this, and gpm uses it! */
+#include <gpm.h>
+
+#ifdef HAVE_LIBDL
+/* link dynamically to GPM */
+typedef int *TYPE_gpm_fd;
+typedef int (*TYPE_Gpm_Open) (Gpm_Connect *, int);
+typedef int (*TYPE_Gpm_Close) (void);
+typedef int (*TYPE_Gpm_GetEvent) (Gpm_Event *);
+
+#define my_gpm_fd       SP->_mouse_gpm_fd
+#define my_Gpm_Open     SP->_mouse_Gpm_Open
+#define my_Gpm_Close    SP->_mouse_Gpm_Close
+#define my_Gpm_GetEvent SP->_mouse_Gpm_GetEvent
+#else
+/* link statically to GPM */
+#define my_gpm_fd       &gpm_fd
+#define my_Gpm_Open     Gpm_Open
+#define my_Gpm_Close    Gpm_Close
+#define my_Gpm_GetEvent Gpm_GetEvent
+#endif /* HAVE_LIBDL */
+#endif /* USE_GPM_SUPPORT */
+
+/*
+ * The SCREEN structure.
+ */
+
+struct screen {
+	int		_ifd;		/* input file ptr for screen	    */
+	FILE		*_ofp;		/* output file ptr for screen	    */
+	char		*_setbuf;	/* buffered I/O for output	    */
+	bool		_filtered;	/* filter() was called		    */
+	bool		_buffered;	/* setvbuf uses _setbuf data	    */
+	int		_checkfd;	/* filedesc for typeahead check	    */
+	//// TERMINAL	*_term;		/* terminal type information	    */
+	short		_lines;		/* screen lines			    */
+	short		_columns;	/* screen columns		    */
+
+	short		_lines_avail;	/* lines available for stdscr	    */
+	short		_topstolen;	/* lines stolen from top	    */
+	ripoff_t	_rippedoff[5];	/* list of lines stolen		    */
+	int		_rip_count;	/* ...and total lines stolen	    */
+
+	WINDOW		*_curscr;	/* current screen		    */
+	WINDOW		*_newscr;	/* virtual screen to be updated to  */
+	WINDOW		*_stdscr;	/* screen's full-window context	    */
+
+	struct tries	*_keytry;	/* "Try" for use with keypad mode   */
+	struct tries	*_key_ok;	/* Disabled keys via keyok(,FALSE)  */
+	bool		_tried;		/* keypad mode was initialized	    */
+	bool		_keypad_on;	/* keypad mode is currently on	    */
+
+	bool		_called_wgetch;	/* check for recursion in wgetch()  */
+	int		_fifo[FIFO_SIZE];	/* input push-back buffer   */
+	short		_fifohead,	/* head of fifo queue		    */
+			_fifotail,	/* tail of fifo queue		    */
+			_fifopeek,	/* where to peek for next char	    */
+			_fifohold;	/* set if breakout marked	    */
+
+	int		_endwin;	/* are we out of window mode?	    */
+	NCURSES_CH_T	*_current_attr; /* holds current attributes set	    */
+	int		_coloron;	/* is color enabled?		    */
+	int		_color_defs;	/* are colors modified		    */
+	int		_cursor;	/* visibility of the cursor	    */
+	int		_cursrow;	/* physical cursor row		    */
+	int		_curscol;	/* physical cursor column	    */
+	bool		_notty;		/* true if we cannot switch non-tty */
+	int		_nl;		/* True if NL -> CR/NL is on	    */
+	int		_raw;		/* True if in raw mode		    */
+	int		_cbreak;	/* 1 if in cbreak mode		    */
+					/* > 1 if in halfdelay mode	    */
+	int		_echo;		/* True if echo on		    */
+	int		_use_meta;	/* use the meta key?		    */
+	struct _SLK	*_slk;		/* ptr to soft key struct / NULL    */
+	int		slk_format;	/* selected format for this screen  */
+	/* cursor movement costs; units are 10ths of milliseconds */
+#if NCURSES_NO_PADDING
+	int		_no_padding;	/* flag to set if padding disabled  */
+#endif
+	int		_char_padding;	/* cost of character put	    */
+	int		_cr_cost;	/* cost of (carriage_return)	    */
+	int		_cup_cost;	/* cost of (cursor_address)	    */
+	int		_home_cost;	/* cost of (cursor_home)	    */
+	int		_ll_cost;	/* cost of (cursor_to_ll)	    */
+#if USE_HARD_TABS
+	int		_ht_cost;	/* cost of (tab)		    */
+	int		_cbt_cost;	/* cost of (backtab)		    */
+#endif /* USE_HARD_TABS */
+	int		_cub1_cost;	/* cost of (cursor_left)	    */
+	int		_cuf1_cost;	/* cost of (cursor_right)	    */
+	int		_cud1_cost;	/* cost of (cursor_down)	    */
+	int		_cuu1_cost;	/* cost of (cursor_up)		    */
+	int		_cub_cost;	/* cost of (parm_cursor_left)	    */
+	int		_cuf_cost;	/* cost of (parm_cursor_right)	    */
+	int		_cud_cost;	/* cost of (parm_cursor_down)	    */
+	int		_cuu_cost;	/* cost of (parm_cursor_up)	    */
+	int		_hpa_cost;	/* cost of (column_address)	    */
+	int		_vpa_cost;	/* cost of (row_address)	    */
+	/* used in tty_update.c, must be chars */
+	int		_ed_cost;	/* cost of (clr_eos)		    */
+	int		_el_cost;	/* cost of (clr_eol)		    */
+	int		_el1_cost;	/* cost of (clr_bol)		    */
+	int		_dch1_cost;	/* cost of (delete_character)	    */
+	int		_ich1_cost;	/* cost of (insert_character)	    */
+	int		_dch_cost;	/* cost of (parm_dch)		    */
+	int		_ich_cost;	/* cost of (parm_ich)		    */
+	int		_ech_cost;	/* cost of (erase_chars)	    */
+	int		_rep_cost;	/* cost of (repeat_char)	    */
+	int		_hpa_ch_cost;	/* cost of (column_address)	    */
+	int		_cup_ch_cost;	/* cost of (cursor_address)	    */
+	int		_cuf_ch_cost;	/* cost of (parm_cursor_right)	    */
+	int		_inline_cost;	/* cost of inline-move		    */
+	int		_smir_cost;	/* cost of (enter_insert_mode)	    */
+	int		_rmir_cost;	/* cost of (exit_insert_mode)	    */
+	int		_ip_cost;	/* cost of (insert_padding)	    */
+	/* used in lib_mvcur.c */
+	char *		_address_cursor;
+	/* used in tty_update.c */
+	int		_scrolling;	/* 1 if terminal's smart enough to  */
+
+	/* used in lib_color.c */
+	color_t		*_color_table;	/* screen's color palette	     */
+	int		_color_count;	/* count of colors in palette	     */
+	colorpair_t	*_color_pairs;	/* screen's color pair list	     */
+	int		_pair_count;	/* count of color pairs		     */
+#if NCURSES_EXT_FUNCS
+	bool		_default_color; /* use default colors		     */
+	bool		_has_sgr_39_49; /* has ECMA default color support    */
+	int		_default_fg;	/* assumed default foreground	     */
+	int		_default_bg;	/* assumed default background	     */
+#endif
+	chtype		_ok_attributes; /* valid attributes for terminal     */
+	chtype		_xmc_suppress;	/* attributes to suppress if xmc     */
+	chtype		_xmc_triggers;	/* attributes to process if xmc	     */
+	chtype *	_acs_map;	/* the real alternate-charset map    */
+	bool *		_screen_acs_map;
+
+
+	/* used in lib_vidattr.c */
+	bool		_use_rmso;	/* true if we may use 'rmso'	     */
+	bool		_use_rmul;	/* true if we may use 'rmul'	     */
+
+	/*
+	 * These data correspond to the state of the idcok() and idlok()
+	 * functions.  A caveat is in order here:  the XSI and SVr4
+	 * documentation specify that these functions apply to the window which
+	 * is given as an argument.  However, ncurses implements this logic
+	 * only for the newscr/curscr update process, _not_ per-window.
+	 */
+	bool		_nc_sp_idlok;
+	bool		_nc_sp_idcok;
+#define _nc_idlok SP->_nc_sp_idlok
+#define _nc_idcok SP->_nc_sp_idcok
+
+#ifdef NCURSES_MOUSE_VERSION
+	/*
+	 * These are the data that support the mouse interface.
+	 */
+	bool		_mouse_initialized;
+	MouseType	_mouse_type;
+	int		_maxclick;
+	bool		(*_mouse_event) (SCREEN *);
+	bool		(*_mouse_inline)(SCREEN *);
+	bool		(*_mouse_parse) (int);
+	void		(*_mouse_resume)(SCREEN *);
+	void		(*_mouse_wrap)	(SCREEN *);
+	int		_mouse_fd;	/* file-descriptor, if any */
+	bool		_mouse_active;	/* true if initialized */
+	mmask_t		_mouse_mask;
+	NCURSES_CONST char *_mouse_xtermcap; /* string to enable/disable mouse */
+	MEVENT		_mouse_events[EV_MAX];	/* hold the last mouse event seen */
+	MEVENT		*_mouse_eventp;	/* next free slot in event queue */
+#endif
+
+#if USE_GPM_SUPPORT
+	bool		_mouse_gpm_loaded;
+	bool		_mouse_gpm_found;
+#ifdef HAVE_LIBDL
+	TYPE_gpm_fd	_mouse_gpm_fd;
+	TYPE_Gpm_Open	_mouse_Gpm_Open;
+	TYPE_Gpm_Close	_mouse_Gpm_Close;
+	TYPE_Gpm_GetEvent _mouse_Gpm_GetEvent;
+#endif
+	Gpm_Connect	_mouse_gpm_connect;
+#endif /* USE_GPM_SUPPORT */
+
+#if USE_EMX_MOUSE
+	int		_emxmouse_wfd;
+	int		_emxmouse_thread;
+	int		_emxmouse_activated;
+	char		_emxmouse_buttons[4];
+#endif
+
+#if USE_SYSMOUSE
+	MEVENT		_sysmouse_fifo[FIFO_SIZE];
+	int		_sysmouse_head;
+	int		_sysmouse_tail;
+	int		_sysmouse_char_width;	/* character width */
+	int		_sysmouse_char_height;	/* character height */
+	int		_sysmouse_old_buttons;
+	int		_sysmouse_new_buttons;
+#endif
+
+	/*
+	 * This supports automatic resizing
+	 */
+#if USE_SIZECHANGE
+	int		(*_resize)(int,int);
+#endif
+
+	/*
+	 * These are data that support the proper handling of the panel stack on an
+	 * per screen basis.
+	 */
+	//// struct panelhook _panelHook;
+	/*
+	 * Linked-list of all windows, to support '_nc_resizeall()' and
+	 * '_nc_freeall()'
+	 */
+	WINDOWLIST	*_nc_sp_windows;
+#define _nc_windows SP->_nc_sp_windows
+
+	bool		_sig_winch;
+	SCREEN		*_next_screen;
+
+	/* hashes for old and new lines */
+	unsigned long	*oldhash, *newhash;
+	HASHMAP		*hashtab;
+	int		hashtab_len;
+
+	bool		_cleanup;	/* cleanup after int/quit signal */
+	int		(*_outch)(int); /* output handler if not putc */
+
+	int		_legacy_coding;	/* see use_legacy_coding() */
+
+	/*
+	 * ncurses/ncursesw are the same up to this point.
+	 */
+#if USE_WIDEC_SUPPORT
+	/* recent versions of 'screen' have partially-working support for
+	 * UTF-8, but do not permit ACS at the same time (see tty_update.c).
+	 */
+	bool		_screen_acs_fix;
+#endif
+};
+
+extern NCURSES_EXPORT_VAR(SCREEN *) _nc_screen_chain;
+
+	WINDOWLIST {
+	WINDOW	win;	/* first, so WINDOW_EXT() works */
+	WINDOWLIST *next;
+#ifdef _XOPEN_SOURCE_EXTENDED
+	char addch_work[(MB_LEN_MAX * 9) + 1];
+	unsigned addch_used;	/* number of bytes in addch_work[] */
+	int addch_x;		/* x-position for addch_work[] */
+	int addch_y;		/* y-position for addch_work[] */
+#endif
+};
+
+#define WINDOW_EXT(win,field) (((WINDOWLIST *)(win))->field)
+
+/* usually in <limits.h> */
+#ifndef UCHAR_MAX
+#define UCHAR_MAX 255
+#endif
+
+/* The terminfo source is assumed to be 7-bit ASCII */
+#define is7bits(c)	((unsigned)(c) < 128)
+
+/* Checks for isprint() should be done on 8-bit characters (non-wide) */
+#define is8bits(c)	((unsigned)(c) <= UCHAR_MAX)
+
+#ifndef min
+#define min(a,b)	((a) > (b)  ?  (b)  :  (a))
+#endif
+
+#ifndef max
+#define max(a,b)	((a) < (b)  ?  (b)  :  (a))
+#endif
+
+/* usually in <unistd.h> */
+#ifndef STDIN_FILENO
+#define STDIN_FILENO 0
+#endif
+
+#ifndef STDOUT_FILENO
+#define STDOUT_FILENO 1
+#endif
+
+#ifndef STDERR_FILENO
+#define STDERR_FILENO 2
+#endif
+
+#ifndef EXIT_SUCCESS
+#define EXIT_SUCCESS 0
+#endif
+
+#ifndef EXIT_FAILURE
+#define EXIT_FAILURE 1
+#endif
+
+#ifndef R_OK
+#define	R_OK	4		/* Test for read permission.  */
+#endif
+#ifndef W_OK
+#define	W_OK	2		/* Test for write permission.  */
+#endif
+#ifndef X_OK
+#define	X_OK	1		/* Test for execute permission.  */
+#endif
+#ifndef F_OK
+#define	F_OK	0		/* Test for existence.  */
+#endif
+
+#if HAVE_FCNTL_H
+//// #include <fcntl.h>		/* may define O_BINARY	*/
+#endif
+
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+#ifdef TRACE
+#define TRACE_OUTCHARS(n) _nc_outchars += (n);
+#else
+#define TRACE_OUTCHARS(n) /* nothing */
+#endif
+
+#define UChar(c)	((unsigned char)(c))
+#define ChCharOf(c)	((c) & (chtype)A_CHARTEXT)
+#define ChAttrOf(c)	((c) & (chtype)A_ATTRIBUTES)
+
+#ifndef MB_LEN_MAX
+#define MB_LEN_MAX 8 /* should be >= MB_CUR_MAX, but that may be a function */
+#endif
+
+#if USE_WIDEC_SUPPORT /* { */
+#define isEILSEQ(status) ((status == (size_t)-1) && (errno == EILSEQ))
+
+#define init_mb(state)	memset(&state, 0, sizeof(state))
+
+#if NCURSES_EXT_COLORS
+#define NulColor	, 0
+#else
+#define NulColor	/* nothing */
+#endif
+
+#define NulChar		0,0,0,0	/* FIXME: see CCHARW_MAX */
+#define CharOf(c)	((c).chars[0])
+#define AttrOf(c)	((c).attr)
+#define AddAttr(c,a)	AttrOf(c) |= ((a) & A_ATTRIBUTES)
+#define RemAttr(c,a)	AttrOf(c) &= ~((a) & A_ATTRIBUTES)
+#define SetAttr(c,a)	AttrOf(c) = ((a) & A_ATTRIBUTES)
+#define NewChar2(c,a)	{ a, { c, NulChar } NulColor }
+#define NewChar(ch)	NewChar2(ChCharOf(ch), ChAttrOf(ch))
+#define CharEq(a,b)	(!memcmp(&(a), &(b), sizeof(a)))
+#define SetChar(ch,c,a) do {							    \
+			    NCURSES_CH_T *_cp = &ch;				    \
+			    memset(_cp, 0, sizeof(ch));				    \
+			    _cp->chars[0] = (c);					    \
+			    _cp->attr = (a);					    \
+			    if_EXT_COLORS(SetPair(ch, PAIR_NUMBER(a)));		    \
+			} while (0)
+#define CHREF(wch)	(&wch)
+#define CHDEREF(wch)	(*wch)
+#define ARG_CH_T	NCURSES_CH_T *
+#define CARG_CH_T	const NCURSES_CH_T *
+#define PUTC_DATA	char PUTC_buf[MB_LEN_MAX]; int PUTC_i, PUTC_n; \
+			mbstate_t PUT_st; wchar_t PUTC_ch
+#define PUTC_INIT	init_mb (PUT_st)
+#define PUTC(ch,b)	do { if(!isWidecExt(ch)) {				    \
+			if (Charable(ch)) {					    \
+			    fputc(CharOf(ch), b);				    \
+			    TRACE_OUTCHARS(1);					    \
+			} else {						    \
+			    PUTC_INIT;						    \
+			    for (PUTC_i = 0; PUTC_i < CCHARW_MAX; ++PUTC_i) {	    \
+				PUTC_ch = (ch).chars[PUTC_i];			    \
+				if (PUTC_ch == L'\0')				    \
+				    break;					    \
+				PUTC_n = wcrtomb(PUTC_buf,			    \
+						 (ch).chars[PUTC_i], &PUT_st);	    \
+				if (PUTC_n <= 0) {				    \
+				    if (PUTC_ch && is8bits(PUTC_ch) && PUTC_i == 0) \
+					putc(PUTC_ch,b);			    \
+				    break;					    \
+				}						    \
+				fwrite(PUTC_buf, (unsigned) PUTC_n, 1, b);	    \
+			    }							    \
+			    TRACE_OUTCHARS(PUTC_i);				    \
+			} } } while (0)
+
+#define BLANK		{ WA_NORMAL, {' '} NulColor }
+#define ZEROS		{ WA_NORMAL, {'\0'} NulColor }
+#define ISBLANK(ch)	((ch).chars[0] == L' ' && (ch).chars[1] == L'\0')
+
+	/*
+	 * Wide characters cannot be represented in the A_CHARTEXT mask of
+	 * attr_t's but an application might have set a narrow character there.
+	 * But even in that case, it would only be a printable character, or
+	 * zero.  Otherwise we can use those bits to tell if a cell is the
+	 * first or extension part of a wide character.
+	 */
+#define WidecExt(ch)	(AttrOf(ch) & A_CHARTEXT)
+#define isWidecBase(ch)	(WidecExt(ch) == 1)
+#define isWidecExt(ch)	(WidecExt(ch) > 1 && WidecExt(ch) < 32)
+#define SetWidecExt(dst, ext)	AttrOf(dst) &= ~A_CHARTEXT,		\
+				AttrOf(dst) |= (ext + 1)
+
+#define if_WIDEC(code)  code
+#define Charable(ch)	((SP != 0 && SP->_legacy_coding)		\
+			 || (AttrOf(ch) & A_ALTCHARSET)			\
+			 || (!isWidecExt(ch) &&				\
+			     (ch).chars[1] == L'\0' &&			\
+			     _nc_is_charable(CharOf(ch))))
+
+#define L(ch)		L ## ch
+#else /* }{ */
+#define CharOf(c)	ChCharOf(c)
+#define AttrOf(c)	ChAttrOf(c)
+#define AddAttr(c,a)	c |= (a)
+#define RemAttr(c,a)	c &= ~((a) & A_ATTRIBUTES)
+#define SetAttr(c,a)	c = ((c) & ~A_ATTRIBUTES) | (a)
+#define NewChar(ch)	(ch)
+#define NewChar2(c,a)	((c) | (a))
+#define CharEq(a,b)	((a) == (b))
+#define SetChar(ch,c,a)	ch = (c) | (a)
+#define CHREF(wch)	wch
+#define CHDEREF(wch)	wch
+#define ARG_CH_T	NCURSES_CH_T
+#define CARG_CH_T	NCURSES_CH_T
+#define PUTC_DATA	int data = 0
+#define PUTC(ch,b)	do { data = CharOf(ch); putc(data,b); } while (0)
+
+#define BLANK		(' '|A_NORMAL)
+#define ZEROS		('\0'|A_NORMAL)
+#define ISBLANK(ch)	(CharOf(ch) == ' ')
+
+#define isWidecExt(ch)	(0)
+#define if_WIDEC(code) /* nothing */
+
+#define L(ch)		ch
+#endif /* } */
+
+#define AttrOfD(ch)	AttrOf(CHDEREF(ch))
+#define CharOfD(ch)	CharOf(CHDEREF(ch))
+#define SetChar2(wch,ch)    SetChar(wch,ChCharOf(ch),ChAttrOf(ch))
+
+#define BLANK_ATTR	A_NORMAL
+#define BLANK_TEXT	L(' ')
+
+#define CHANGED     -1
+
+#define LEGALYX(w, y, x) \
+	      ((w) != 0 && \
+		((x) >= 0 && (x) <= (w)->_maxx && \
+		 (y) >= 0 && (y) <= (w)->_maxy))
+
+#define CHANGED_CELL(line,col) \
+	if (line->firstchar == _NOCHANGE) \
+		line->firstchar = line->lastchar = col; \
+	else if ((col) < line->firstchar) \
+		line->firstchar = col; \
+	else if ((col) > line->lastchar) \
+		line->lastchar = col
+
+#define CHANGED_RANGE(line,start,end) \
+	if (line->firstchar == _NOCHANGE \
+	 || line->firstchar > (start)) \
+		line->firstchar = start; \
+	if (line->lastchar == _NOCHANGE \
+	 || line->lastchar < (end)) \
+		line->lastchar = end
+
+#define CHANGED_TO_EOL(line,start,end) \
+	if (line->firstchar == _NOCHANGE \
+	 || line->firstchar > (start)) \
+		line->firstchar = start; \
+	line->lastchar = end
+
+#define SIZEOF(v) (sizeof(v)/sizeof(v[0]))
+
+#define FreeIfNeeded(p)  if ((p) != 0) free(p)
+
+/* FreeAndNull() is not a comma-separated expression because some compilers
+ * do not accept a mixture of void with values.
+ */
+#define FreeAndNull(p)   free(p); p = 0
+
+//// #include <nc_alloc.h>
+
+/*
+ * TTY bit definition for converting tabs to spaces.
+ */
+#ifdef TAB3
+# define OFLAGS_TABS TAB3	/* POSIX specifies TAB3 */
+#else
+# ifdef XTABS
+#  define OFLAGS_TABS XTABS	/* XTABS is usually the "same" */
+# else
+#  ifdef OXTABS
+#   define OFLAGS_TABS OXTABS	/* the traditional BSD equivalent */
+#  else
+#   define OFLAGS_TABS 0
+#  endif
+# endif
+#endif
+
+/*
+ * Prefixes for call/return points of library function traces.  We use these to
+ * instrument the public functions so that the traces can be easily transformed
+ * into regression scripts.
+ */
+#define T_CALLED(fmt) "called {" fmt
+#define T_CREATE(fmt) "create :" fmt
+#define T_RETURN(fmt) "return }" fmt
+
+#ifdef TRACE
+
+#define START_TRACE() \
+	if ((_nc_tracing & TRACE_MAXIMUM) == 0) { \
+	    int t = _nc_getenv_num("NCURSES_TRACE"); \
+	    if (t >= 0) \
+		trace((unsigned) t); \
+	}
+
+#define TR(n, a)	if (_nc_tracing & (n)) _tracef a
+#define T(a)		TR(TRACE_CALLS, a)
+#define TPUTS_TRACE(s)	_nc_tputs_trace = s;
+#define TRACE_RETURN(value,type) return _nc_retrace_##type(value)
+
+#define returnAttr(code)	TRACE_RETURN(code,attr_t)
+#define returnBits(code)	TRACE_RETURN(code,unsigned)
+#define returnBool(code)	TRACE_RETURN(code,bool)
+#define returnCPtr(code)	TRACE_RETURN(code,cptr)
+#define returnCVoidPtr(code)	TRACE_RETURN(code,cvoid_ptr)
+#define returnChar(code)	TRACE_RETURN(code,chtype)
+#define returnCode(code)	TRACE_RETURN(code,int)
+#define returnPtr(code)		TRACE_RETURN(code,ptr)
+#define returnSP(code)		TRACE_RETURN(code,sp)
+#define returnVoid		T((T_RETURN(""))); return
+#define returnVoidPtr(code)	TRACE_RETURN(code,void_ptr)
+#define returnWin(code)		TRACE_RETURN(code,win)
+
+extern NCURSES_EXPORT(NCURSES_BOOL)     _nc_retrace_bool (NCURSES_BOOL);
+extern NCURSES_EXPORT(NCURSES_CONST void *) _nc_retrace_cvoid_ptr (NCURSES_CONST void *);
+extern NCURSES_EXPORT(SCREEN *)         _nc_retrace_sp (SCREEN *);
+extern NCURSES_EXPORT(WINDOW *)         _nc_retrace_win (WINDOW *);
+extern NCURSES_EXPORT(attr_t)           _nc_retrace_attr_t (attr_t);
+extern NCURSES_EXPORT(char *)           _nc_retrace_ptr (char *);
+extern NCURSES_EXPORT(char *)           _nc_trace_ttymode(TTY *tty);
+extern NCURSES_EXPORT(char *)           _nc_varargs (const char *, va_list);
+extern NCURSES_EXPORT(chtype)           _nc_retrace_chtype (chtype);
+extern NCURSES_EXPORT(const char *)     _nc_altcharset_name(attr_t, chtype);
+extern NCURSES_EXPORT(const char *)     _nc_retrace_cptr (const char *);
+extern NCURSES_EXPORT(int)              _nc_retrace_int (int);
+extern NCURSES_EXPORT(unsigned)         _nc_retrace_unsigned (unsigned);
+extern NCURSES_EXPORT(void *)           _nc_retrace_void_ptr (void *);
+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);
+#endif
+
+extern NCURSES_EXPORT(const char *) _nc_viscbuf2 (int, const NCURSES_CH_T *, int);
+extern NCURSES_EXPORT(const char *) _nc_viscbuf (const NCURSES_CH_T *, int);
+
+#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 returnCPtr(code)	return code
+#define returnCVoidPtr(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 returnVoidPtr(code)	return code
+#define returnWin(code)		return code
+
+#endif /* TRACE/!TRACE */
+
+/*
+ * Return-codes for tgetent() and friends.
+ */
+#define TGETENT_YES  1		/* entry is found */
+#define TGETENT_NO   0		/* entry is not found */
+#define TGETENT_ERR -1		/* an error occurred */
+
+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 NONBLANK_ATTR (A_NORMAL|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 (PAIR_NUMBER(at) > 0) {\
+      (S) &= ~(at|A_COLOR);\
+   } else {\
+      (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 + SP->_ip_cost) * count) \
+		    : INFINITY)))
+
+#if USE_XMC_SUPPORT
+#define UpdateAttrs(c)	if (!SameAttrOf(SCREEN_ATTRS(SP), c)) { \
+				attr_t chg = AttrOf(SCREEN_ATTRS(SP)); \
+				VIDATTR(AttrOf(c), GetPair(c)); \
+				if (magic_cookie_glitch > 0 \
+				 && XMC_CHANGES((chg ^ AttrOf(SCREEN_ATTRS(SP))))) { \
+					T(("%s @%d before glitch %d,%d", \
+						__FILE__, __LINE__, \
+						SP->_cursrow, \
+						SP->_curscol)); \
+					_nc_do_xmc_glitch(chg); \
+				} \
+			}
+#else
+#define UpdateAttrs(c)	if (!SameAttrOf(SCREEN_ATTRS(SP), c)) \
+				VIDATTR(AttrOf(c), GetPair(c));
+#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 (NCURSES_CH_T);
+
+#else
+
+extern NCURSES_EXPORT(void) _nc_expanded (void);
+
+#endif
+
+#if !HAVE_GETCWD
+#define getcwd(buf,len) getwd(buf)
+#endif
+
+/* charable.c */
+#if USE_WIDEC_SUPPORT
+extern NCURSES_EXPORT(bool) _nc_is_charable(wchar_t);
+extern NCURSES_EXPORT(int) _nc_to_char(wint_t);
+extern NCURSES_EXPORT(wint_t) _nc_to_widechar(int);
+#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_addch.c */
+#if USE_WIDEC_SUPPORT
+NCURSES_EXPORT(int) _nc_build_wch(WINDOW *win, ARG_CH_T ch);
+#endif
+
+/* lib_addstr.c */
+#if USE_WIDEC_SUPPORT && !defined(USE_TERMLIB)
+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_insch.c */
+extern NCURSES_EXPORT(int) _nc_insert_ch(WINDOW *, chtype);
+
+/* 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 */
+#define BAUDBYTE	9	/* 9 = 7 bits + 1 parity + 1 stop */
+
+/* lib_setup.c */
+extern NCURSES_EXPORT(char *) _nc_get_locale(void);
+extern NCURSES_EXPORT(int) _nc_unicode_locale(void);
+extern NCURSES_EXPORT(int) _nc_locale_breaks_acs(void);
+extern NCURSES_EXPORT(int) _nc_setupterm(NCURSES_CONST char *, int, int *, bool);
+
+/* lib_tstp.c */
+#if USE_SIGWINCH
+extern NCURSES_EXPORT(int) _nc_handle_sigwinch(int);
+#else
+#define _nc_handle_sigwinch(a) /* nothing */
+#endif
+
+/* lib_wacs.c */
+#if USE_WIDEC_SUPPORT
+extern NCURSES_EXPORT(void) _nc_init_wacs(void);
+#endif
+
+typedef struct {
+    char *s_head;	/* beginning of the string (may be null) */
+    char *s_tail;	/* end of the string (may be null) */
+    size_t s_size;	/* current remaining size available */
+    size_t s_init;	/* total size available */
+} 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 *);
+
+#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);
+extern NCURSES_EXPORT(char *) _nc_expand_try (struct tries *, unsigned, int *, size_t);
+extern NCURSES_EXPORT(int) _nc_remove_key (struct tries **, unsigned);
+extern NCURSES_EXPORT(int) _nc_remove_string (struct tries **, const char *);
+
+/* elsewhere ... */
+//// extern NCURSES_EXPORT(ENTRY *) _nc_delink_entry(ENTRY *, TERMTYPE *);
+extern NCURSES_EXPORT(WINDOW *) _nc_makenew (int, int, int, int, int);
+extern NCURSES_EXPORT(char *) _nc_trace_buf (int, size_t);
+extern NCURSES_EXPORT(char *) _nc_trace_bufcat (int, const char *);
+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_read_termcap_entry (const char *const, TERMTYPE *const);
+extern NCURSES_EXPORT(int) _nc_setupscreen (int, int, FILE *, bool, int);
+extern NCURSES_EXPORT(int) _nc_timed_wait(int, int, int * EVENTLIST_2nd(_nc_eventlist *));
+extern NCURSES_EXPORT(void) _nc_do_color (short, short, bool, int (*)(int));
+extern NCURSES_EXPORT(void) _nc_flush (void);
+//// extern NCURSES_EXPORT(void) _nc_free_entry(ENTRY *, TERMTYPE *);
+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_scroll_oldhash (int n, int top, int bot);
+extern NCURSES_EXPORT(void) _nc_scroll_optimize (void);
+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 NO_LEAKS
+extern NCURSES_EXPORT(void) _nc_alloc_entry_leaks(void);
+extern NCURSES_EXPORT(void) _nc_captoinfo_leaks(void);
+extern NCURSES_EXPORT(void) _nc_comp_scan_leaks(void);
+extern NCURSES_EXPORT(void) _nc_keyname_leaks(void);
+extern NCURSES_EXPORT(void) _nc_tgetent_leaks(void);
+#endif
+
+#ifndef USE_TERMLIB
+extern NCURSES_EXPORT(NCURSES_CH_T) _nc_render (WINDOW *, NCURSES_CH_T);
+extern NCURSES_EXPORT(int) _nc_waddch_nosync (WINDOW *, const NCURSES_CH_T);
+extern NCURSES_EXPORT(void) _nc_scroll_window (WINDOW *, int const, NCURSES_SIZE_T const, NCURSES_SIZE_T const, NCURSES_CH_T);
+#endif
+
+#if USE_WIDEC_SUPPORT && !defined(USE_TERMLIB)
+#ifdef linux
+extern NCURSES_EXPORT(size_t) _nc_wcrtomb (char *, wchar_t, mbstate_t *);
+#else
+#define _nc_wcrtomb(s,wc,ps) wcrtomb(s,wc,ps)
+#endif
+#endif
+
+#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) _nc_set_buffer(SP->_ofp, flag)
+
+#define NC_OUTPUT ((SP != 0) ? SP->_ofp : 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 */