/****************************************************************************
* Copyright (c) 1998 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> *
****************************************************************************/
/*
* $Id: curses.priv.h,v 1.144 1999/10/22 23:15:37 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
#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
#ifndef PATH_MAX
# if defined(_POSIX_PATH_MAX)
# define PATH_MAX _POSIX_PATH_MAX
# elif defined(MAXPATHLEN)
# define PATH_MAX MAXPATHLEN
# else
# define PATH_MAX 255 /* the Posix minimum path-size */
# endif
#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_POLL && HAVE_SYS_STROPTS_H && HAVE_POLL_H
#define USE_FUNC_POLL 1
#else
#define USE_FUNC_POLL 0
#endif
/* 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
#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.
*/
#ifndef NCURSES_EXT_FUNCS
#undef HAVE_SIZECHANGE
#endif
#if HAVE_SIZECHANGE
#define USE_SIZECHANGE 1
#else
#undef USE_SIGWINCH
#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 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. */
};
/*
* Definitions for color pairs
*/
#define C_SHIFT 8 /* 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))
/*
* Common/troublesome character definitions
*/
#define L_BRACE '{'
#define R_BRACE '}'
#define S_QUOTE '\''
/*
* Structure for palette tables
*/
typedef struct
{
short red, green, blue;
}
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
#include <curses.h> /* we'll use -Ipath directive to get the right one! */
/*
* Structure for soft labels.
*/
typedef struct
{
char *text; /* text for the label */
char *form_text; /* formatted text (left/center/...) */
int x; /* x coordinate of this field */
char dirty; /* this label has changed */
char visible; /* field is visible */
} slk_ent;
typedef struct {
char dirty; /* all labels have changed */
char hidden; /* soft labels are hidden */
struct _win_st *win;
slk_ent *ent;
char* buffer; /* buffer for labels */
short maxlab; /* number of available labels */
short labcnt; /* number of allocated labels */
short maxlen; /* length of labels */
chtype attr; /* soft label attribute */
} SLK;
struct screen {
int _ifd; /* input file ptr for screen */
FILE *_ofp; /* output file ptr for screen */
char *_setbuf; /* buffered I/O for output */
int _buffered; /* setvbuf uses _setbuf data */
int _checkfd; /* filedesc for typeahead check */
struct term *_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 */
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) */
int _tried; /* keypad mode was initialized */
unsigned 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? */
unsigned long _current_attr; /* terminal attribute current set */
int _coloron; /* is color enabled? */
int _cursor; /* visibility of the cursor */
int _cursrow; /* physical cursor row */
int _curscol; /* physical cursor column */
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? */
SLK *_slk; /* ptr to soft key struct / NULL */
int slk_format; /* selected format for this screen */
/* cursor movement costs; units are 10ths of milliseconds */
#ifdef 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 lib_doupdate.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 _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;
int _carriage_return_length;
int _cursor_home_length;
int _cursor_to_ll_length;
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 */
unsigned short *_color_pairs; /* screen's color pair list */
int _pair_count; /* count of color pairs */
int _default_color; /* use default colors */
chtype _xmc_suppress; /* attributes to suppress if xmc */
chtype _xmc_triggers; /* attributes to process if xmc */
chtype _acs_map[ACS_LEN];
/* 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
/*
* These are the data that support the mouse interface.
*/
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 */
/*
* 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;
bool _cleanup; /* cleanup after int/quit signal */
};
extern SCREEN *_nc_screen_chain;
#ifdef NCURSES_NOMACROS
#include <nomacros.h>
#endif
WINDOWLIST {
WINDOWLIST *next;
WINDOW *win;
};
typedef struct {
int line; /* lines to take, < 0 => from bottom*/
int (*hook)(struct _win_st *, int); /* callback for user */
struct _win_st *w; /* maybe we need this for cleanup */
} ripoff_t;
/* The terminfo source is assumed to be 7-bit ASCII */
#define is7bits(c) ((unsigned)(c) < 128)
#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
#define TextOf(c) ((c) & (chtype)A_CHARTEXT)
#define AttrOf(c) ((c) & (chtype)A_ATTRIBUTES)
#define BLANK (' '|A_NORMAL)
#define CHANGED -1
#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 typeMalloc(type,elts) (type *)malloc((elts)*sizeof(type))
#define typeCalloc(type,elts) (type *)calloc((elts),sizeof(type))
#define typeRealloc(type,elts,ptr) (type *)_nc_doalloc(ptr, (elts)*sizeof(type))
#define FreeIfNeeded(p) if(p != 0) free(p)
#define FreeAndNull(p) free(p); p = 0
#include <nc_alloc.h>
/*
* 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 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 returnCode(code) TRACE_RETURN(code,int)
#define returnPtr(code) TRACE_RETURN(code,ptr)
#define returnVoid T((T_RETURN(""))); return
#define returnWin(code) TRACE_RETURN(code,win)
extern WINDOW * _nc_retrace_win(WINDOW *);
extern attr_t _nc_retrace_attr_t(attr_t);
extern char *_nc_retrace_ptr(char *);
extern const char *_nc_tputs_trace;
extern int _nc_retrace_int(int);
extern long _nc_outchars;
extern void _nc_fifo_dump(void);
#else
#define T(a)
#define TR(n, a)
#define TPUTS_TRACE(s)
#define returnAttr(code) return code
#define returnCode(code) return code
#define returnPtr(code) return code
#define returnVoid return
#define returnWin(code) return code
#endif
extern unsigned _nc_tracing;
extern const char *_nc_visbuf2(int, const char *);
#define _trace_key(ch) ((ch > KEY_MIN) ? keyname(ch) : _tracechar((unsigned char)ch))
#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);\
T(("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);\
}\
T(("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(c) if (SP->_current_attr != AttrOf(c)) { \
attr_t chg = SP->_current_attr; \
vidattr(AttrOf(c)); \
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(c) if (SP->_current_attr != AttrOf(c)) \
vidattr(AttrOf(c));
#endif
/*
* Check whether the given character can be output by clearing commands. This
* includes test for being a space and not including any 'bad' attributes, such
* as A_REVERSE. All attribute flags which don't affect appearance of a space
* or can be output by clearing (A_COLOR in case of bce-terminal) are excluded.
*/
#define can_clear_with(ch) \
((ch & ~(NONBLANK_ATTR|(back_color_erase ? A_COLOR:0))) == BLANK)
#ifdef NCURSES_EXPANDED
#undef toggle_attr_on
#define toggle_attr_on(S,at) _nc_toggle_attr_on(&(S), at)
extern 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 void _nc_toggle_attr_off(attr_t *, attr_t);
#undef can_clear_with
#define can_clear_with(ch) _nc_can_clear_with(ch)
extern int _nc_can_clear_with(chtype);
#undef DelCharCost
#define DelCharCost(count) _nc_DelCharCost(count)
extern int _nc_DelCharCost(int);
#undef InsCharCost
#define InsCharCost(count) _nc_InsCharCost(count)
extern int _nc_InsCharCost(int);
#undef UpdateAttrs
#define UpdateAttrs(c) _nc_UpdateAttrs(c)
extern void _nc_UpdateAttrs(chtype);
#else
extern void _nc_expanded(void);
#endif
#if !HAVE_GETCWD
#define getcwd(buf,len) getwd(buf)
#endif
/* doalloc.c */
extern void *_nc_doalloc(void *, size_t);
#if !HAVE_STRDUP
#define strdup _nc_strdup
extern char *_nc_strdup(const char *);
#endif
/* doupdate.c */
#if USE_XMC_SUPPORT
extern void _nc_do_xmc_glitch(attr_t);
#endif
/* hardscroll.c */
#if defined(TRACE) || defined(SCROLLDEBUG) || defined(HASHDEBUG)
extern void _nc_linedump(void);
#endif
/* lib_acs.c */
extern void _nc_init_acs(void); /* corresponds to traditional 'init_acs()' */
extern int _nc_msec_cost(const char *const, int); /* used by 'tack' program */
/* lib_mvcur.c */
#define INFINITY 1000000 /* cost: too high to use */
extern void _nc_mvcur_init(void);
extern void _nc_mvcur_resume(void);
extern void _nc_mvcur_wrap(void);
extern int _nc_scrolln(int, int, int, int);
extern void _nc_screen_init(void);
extern void _nc_screen_resume(void);
extern void _nc_screen_wrap(void);
#if !HAVE_STRSTR
#define strstr _nc_strstr
extern char *_nc_strstr(const char *, const char *);
#endif
/* lib_mouse.c */
extern int _nc_has_mouse(void);
/* safe_sprintf.c */
extern char * _nc_printf_string(const char *fmt, va_list ap);
/* tries.c */
extern void _nc_add_to_try(struct tries **tree, char *str, unsigned short code);
extern char *_nc_expand_try(struct tries *tree, unsigned short code, int *count, size_t len);
extern int _nc_remove_key(struct tries **tree, unsigned short code);
extern int _nc_remove_string(struct tries **tree, char *string);
/* elsewhere ... */
extern WINDOW *_nc_makenew(int, int, int, int, int);
extern char *_nc_home_terminfo(void);
extern char *_nc_trace_buf(int, size_t);
extern chtype _nc_background(WINDOW *);
extern chtype _nc_render(WINDOW *, chtype);
extern int _nc_access(const char *, int);
extern int _nc_baudrate(int);
extern int _nc_getenv_num(const char *);
extern int _nc_keypad(bool);
extern int _nc_ospeed(int);
extern int _nc_outch(int);
extern int _nc_setupscreen(short, short const, FILE *);
extern int _nc_timed_wait(int, int, int *);
extern int _nc_waddch_nosync(WINDOW *, const chtype);
extern void _nc_do_color(int, bool, int (*)(int));
extern void _nc_freeall(void);
extern void _nc_freewin(WINDOW *win);
extern void _nc_hash_map(void);
extern void _nc_init_keytry(void);
extern void _nc_keep_tic_dir(const char *);
extern void _nc_make_oldhash(int i);
extern void _nc_outstr(const char *str);
extern void _nc_scroll_oldhash(int n, int top, int bot);
extern void _nc_scroll_optimize(void);
extern void _nc_scroll_window(WINDOW *, int const, short const, short const, chtype);
extern void _nc_set_buffer(FILE *ofp, bool buffered);
extern void _nc_signal_handler(bool);
extern void _nc_synchook(WINDOW *win);
extern void _nc_trace_tries(struct tries *tree);
#if USE_SIZECHANGE
extern void _nc_update_screensize(void);
#endif
/* scroll indices */
extern 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 ((SP != 0) ? SP->_ofp : stdout)
#define _nc_flush() (void)fflush(NC_OUTPUT)
/*
* On systems with a broken linker, define 'SP' as a function to force the
* linker to pull in the data-only module with 'SP'.
*/
#ifndef BROKEN_LINKER
#define BROKEN_LINKER 0
#endif
#if BROKEN_LINKER
#define SP _nc_screen()
extern SCREEN *_nc_screen(void);
extern int _nc_alloc_screen(void);
extern void _nc_set_screen(SCREEN *);
#else
/* current screen is private data; avoid possible linking conflicts too */
extern 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 windows, 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 int _nc_slk_format; /* != 0 if slk_init() called */
extern 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 int _nc_ripoffline(int line, int (*init)(WINDOW *,int));
#ifdef __cplusplus
}
#endif
#endif /* CURSES_PRIV_H */
