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curses_private.h revision 1.23
      1 /*	$NetBSD: curses_private.h,v 1.23 2002/06/26 18:37:28 itojun Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998-2000 Brett Lymn
      5  *                         (blymn (at) baea.com.au, brett_lymn (at) yahoo.com.au)
      6  * All rights reserved.
      7  *
      8  * This code has been donated to The NetBSD Foundation by the Author.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  *
     29  *
     30  */
     31 
     32 #include <termios.h>
     33 
     34 /* Private structure definitions for curses. */
     35 
     36 /* Termcap capabilities. */
     37 extern char	__tc_am, __tc_bs, __tc_cc, __tc_da, __tc_eo,
     38 		__tc_hc, __tc_hl, __tc_in, __tc_mi, __tc_ms,
     39 		__tc_nc, __tc_ns, __tc_os, __tc_ul, __tc_ut,
     40 		__tc_xb, __tc_xn, __tc_xt, __tc_xs, __tc_xx;
     41 extern char	__CA;
     42 extern int	__tc_pa, __tc_Co, __tc_NC;
     43 extern char	*__tc_ac, *__tc_AB, *__tc_ae, *__tc_AF, *__tc_AL,
     44 		*__tc_al, *__tc_as, *__tc_bc, *__tc_bl, *__tc_bt,
     45 		*__tc_cd, *__tc_ce, *__tc_cl, *__tc_cm, *__tc_cr,
     46 		*__tc_cs, *__tc_dc, *__tc_DL, *__tc_dl, *__tc_dm,
     47 		*__tc_DO, *__tc_do, *__tc_eA, *__tc_ed, *__tc_ei,
     48 		*__tc_ho, *__tc_Ic, *__tc_ic, *__tc_im, *__tc_Ip,
     49 		*__tc_ip, *__tc_k0, *__tc_k1, *__tc_k2, *__tc_k3,
     50 		*__tc_k4, *__tc_k5, *__tc_k6, *__tc_k7, *__tc_k8,
     51 		*__tc_k9, *__tc_kd, *__tc_ke, *__tc_kh, *__tc_kl,
     52 		*__tc_kr, *__tc_ks, *__tc_ku, *__tc_LE, *__tc_ll,
     53 		*__tc_ma, *__tc_mb, *__tc_md, *__tc_me, *__tc_mh,
     54 		*__tc_mk, *__tc_mm, *__tc_mo, *__tc_mp, *__tc_mr,
     55 		*__tc_nd, *__tc_nl, *__tc_oc, *__tc_op,
     56 		*__tc_rc, *__tc_RI, *__tc_Sb, *__tc_sc, *__tc_se,
     57 		*__tc_SF, *__tc_Sf, *__tc_sf, *__tc_so, *__tc_sp,
     58 		*__tc_SR, *__tc_sr, *__tc_ta, *__tc_te, *__tc_ti,
     59 		*__tc_uc, *__tc_ue, *__tc_UP, *__tc_up, *__tc_us,
     60 		*__tc_vb, *__tc_ve, *__tc_vi, *__tc_vs;
     61 
     62 /*
     63  * A window an array of __LINE structures pointed to by the 'lines' pointer.
     64  * A line is an array of __LDATA structures pointed to by the 'line' pointer.
     65  *
     66  * IMPORTANT: the __LDATA structure must NOT induce any padding, so if new
     67  * fields are added -- padding fields with *constant values* should ensure
     68  * that the compiler will not generate any padding when storing an array of
     69  *  __LDATA structures.  This is to enable consistent use of memcmp, and memcpy
     70  * for comparing and copying arrays.
     71  */
     72 
     73 struct __ldata {
     74 	wchar_t	ch;			/* Character */
     75 	attr_t	attr;			/* Attributes */
     76 	wchar_t	bch;			/* Background character */
     77 	attr_t	battr;			/* Background attributes */
     78 };
     79 
     80 #define __LDATASIZE	(sizeof(__LDATA))
     81 
     82 struct __line {
     83 #define	__ISDIRTY	0x01		/* Line is dirty. */
     84 #define __ISPASTEOL	0x02		/* Cursor is past end of line */
     85 	unsigned int flags;
     86 	unsigned int hash;		/* Hash value for the line. */
     87 	int *firstchp, *lastchp;	/* First and last chngd columns ptrs */
     88 	int firstch, lastch;		/* First and last changed columns. */
     89 	__LDATA *line;			/* Pointer to the line text. */
     90 };
     91 
     92 struct __window {		/* Window structure. */
     93 	struct __window	*nextp, *orig;	/* Subwindows list and parent. */
     94 	int begy, begx;			/* Window home. */
     95 	int cury, curx;			/* Current x, y coordinates. */
     96 	int maxy, maxx;			/* Maximum values for curx, cury. */
     97 	short ch_off;			/* x offset for firstch/lastch. */
     98 	__LINE **lines;			/* Array of pointers to the lines */
     99 	__LINE  *lspace;		/* line space (for cleanup) */
    100 	__LDATA *wspace;		/* window space (for cleanup) */
    101 
    102 #define	__ENDLINE	0x00000001	/* End of screen. */
    103 #define	__FLUSH		0x00000002	/* Fflush(stdout) after refresh. */
    104 #define	__FULLWIN	0x00000004	/* Window is a screen. */
    105 #define	__IDLINE	0x00000008	/* Insert/delete sequences. */
    106 #define	__SCROLLWIN	0x00000010	/* Last char will scroll window. */
    107 #define	__SCROLLOK	0x00000020	/* Scrolling ok. */
    108 #define	__CLEAROK	0x00000040	/* Clear on next refresh. */
    109 #define	__LEAVEOK	0x00000100	/* If cursor left */
    110 #define	__KEYPAD	0x00010000	/* If interpreting keypad codes */
    111 #define	__NOTIMEOUT	0x00020000	/* Wait indefinitely for func keys */
    112 	unsigned int flags;
    113 	int	delay;			/* delay for getch() */
    114 	attr_t	wattr;			/* Character attributes */
    115 	wchar_t	bch;			/* Background character */
    116 	attr_t	battr;			/* Background attributes */
    117 	int	scr_t, scr_b;		/* Scrolling region top, bottom */
    118 };
    119 
    120 /* Set of attributes unset by 'me' - 'mb', 'md', 'mh', 'mk', 'mp' and 'mr'. */
    121 #define	__TERMATTR \
    122 	(__REVERSE | __BLINK | __DIM | __BOLD | __BLANK | __PROTECT)
    123 
    124 struct __winlist {
    125 	struct __window		*winp;	/* The window. */
    126 	struct __winlist	*nextp;	/* Next window. */
    127 };
    128 
    129 struct __color {
    130 	short	num;
    131 	short	red;
    132 	short	green;
    133 	short	blue;
    134 	int	flags;
    135 };
    136 
    137 /* List of colour pairs */
    138 struct __pair {
    139 	short	fore;
    140 	short	back;
    141 	int	flags;
    142 };
    143 
    144 /* Maximum colours */
    145 #define	MAX_COLORS	64
    146 /* Maximum colour pairs - determined by number of colour bits in attr_t */
    147 #define	MAX_PAIRS	64	/* PAIR_NUMBER(__COLOR) + 1 */
    148 
    149 typedef struct keymap keymap_t;
    150 
    151 /* this is the encapsulation of the terminal definition, one for
    152  * each terminal that curses talks to.
    153  */
    154 struct __screen {
    155 	FILE    *infd, *outfd;  /* input and output file descriptors */
    156 	WINDOW	*curscr;	/* Current screen. */
    157 	WINDOW	*stdscr;	/* Standard screen. */
    158 	WINDOW	*__virtscr;	/* Virtual screen (for doupdate()). */
    159 	int      curwin;        /* current window for refresh */
    160 	short    lx, ly;        /* loop parameters for refresh */
    161 	int	 COLS;		/* Columns on the screen. */
    162 	int	 LINES;		/* Lines on the screen. */
    163 	int	 COLORS;	/* Maximum colors on the screen */
    164 	int	 COLOR_PAIRS;	/* Maximum color pairs on the screen */
    165 	int	 My_term;	/* Use Def_term regardless. */
    166 	char	 GT;		/* Gtty indicates tabs. */
    167 	char	 NONL;		/* Term can't hack LF doing a CR. */
    168 	char	 UPPERCASE;	/* Terminal is uppercase only. */
    169 
    170         /* BEWARE!!! The order of the following terminal capabilities */
    171         /* (tc_foo) is important - do not update without fixing the zap */
    172         /* function in setterm.c */
    173 	char	tc_am, tc_bs, tc_cc, tc_da, tc_eo, tc_hc, tc_hl, tc_in, tc_mi,
    174 		tc_ms, tc_nc, tc_ns, tc_os, tc_ul, tc_ut, tc_xb, tc_xn, tc_xt,
    175 		tc_xs, tc_xx;
    176 	int     flag_count;
    177 	int	tc_pa, tc_Co, tc_NC;
    178 	int     int_count;
    179 	char	*tc_AB, *tc_ac, *tc_ae, *tc_AF, *tc_AL,
    180 		*tc_al, *tc_as, *tc_bc, *tc_bl, *tc_bt,
    181 		*tc_cd, *tc_ce, *tc_cl, *tc_cm, *tc_cr,
    182 		*tc_cs, *tc_dc, *tc_DL, *tc_dl, *tc_dm,
    183 		*tc_DO, *tc_do, *tc_eA, *tc_ed, *tc_ei,
    184 		*tc_ho, *tc_Ic, *tc_ic, *tc_im, *tc_Ip,
    185 		*tc_ip, *tc_k0, *tc_k1, *tc_k2, *tc_k3,
    186 		*tc_k4, *tc_k5, *tc_k6, *tc_k7, *tc_k8,
    187 		*tc_k9, *tc_kd, *tc_ke, *tc_kh, *tc_kl,
    188 		*tc_kr, *tc_ks, *tc_ku, *tc_LE, *tc_ll,
    189 		*tc_ma, *tc_mb, *tc_md, *tc_me, *tc_mh,
    190 		*tc_mk, *tc_mm, *tc_mo, *tc_mp, *tc_mr,
    191 		*tc_nd, *tc_nl, *tc_oc, *tc_op, *tc_pc,
    192 		*tc_rc, *tc_RI, *tc_Sb, *tc_sc, *tc_se,
    193 		*tc_SF, *tc_Sf, *tc_sf, *tc_so, *tc_sp,
    194 		*tc_SR, *tc_sr, *tc_ta, *tc_te, *tc_ti,
    195 		*tc_uc, *tc_ue, *tc_UP, *tc_up, *tc_us,
    196 		*tc_vb, *tc_ve, *tc_vi, *tc_vs;
    197 	char CA;
    198 	int str_count;
    199 	chtype acs_char[NUM_ACS];
    200 	struct __color colours[MAX_COLORS];
    201 	struct __pair  colour_pairs[MAX_PAIRS];
    202 	attr_t	nca;
    203 
    204 /* Style of colour manipulation */
    205 #define COLOR_NONE	0
    206 #define COLOR_ANSI	1	/* ANSI/DEC-style colour manipulation */
    207 #define COLOR_HP	2	/* HP-style colour manipulation */
    208 #define COLOR_TEK	3	/* Tektronix-style colour manipulation */
    209 #define COLOR_OTHER	4	/* None of the others but can set fore/back */
    210 	int color_type;
    211 
    212 	attr_t mask_op;
    213 	attr_t mask_me;
    214 	attr_t mask_ue;
    215 	attr_t mask_se;
    216 	struct tinfo *cursesi_genbuf;
    217 	int old_mode; /* old cursor visibility state for terminal */
    218 	keymap_t *base_keymap;
    219 	int echoit;
    220 	int pfast;
    221 	int rawmode;
    222 	int noqch;
    223 	int clearok;
    224 	int useraw;
    225 	struct __winlist *winlistp;
    226 	struct   termios cbreakt, rawt, *curt, save_termios;
    227 	struct termios orig_termios, baset, savedtty;
    228 	int ovmin;
    229 	int ovtime;
    230 	char *stdbuf;
    231 	unsigned int len;
    232 	int meta_state;
    233 	char pad_char;
    234 	char ttytype[128];
    235 	int endwin;
    236 	int notty;
    237 };
    238 
    239 
    240 extern char	 __GT;			/* Gtty indicates tabs. */
    241 extern char	 __NONL;		/* Term can't hack LF doing a CR. */
    242 extern char	 __UPPERCASE;		/* Terminal is uppercase only. */
    243 extern int	 My_term;		/* Use Def_term regardless. */
    244 extern const char	*Def_term;	/* Default terminal type. */
    245 extern SCREEN   *_cursesi_screen;       /* The current screen in use */
    246 
    247 /* Private functions. */
    248 #ifdef DEBUG
    249 void	 __CTRACE(const char *, ...);
    250 #endif
    251 void     __cputchar_args(char, void *);
    252 void     _cursesi_free_keymap(keymap_t *);
    253 int      _cursesi_gettmode(SCREEN *);
    254 void     _cursesi_reset_acs(SCREEN *);
    255 void     _cursesi_resetterm(SCREEN *);
    256 int      _cursesi_setterm(char *, SCREEN *);
    257 int      _cursesi_wnoutrefresh(SCREEN *, WINDOW *);
    258 int	 __delay(void);
    259 u_int	 __hash_more(char *, size_t, u_int);
    260 #define	__hash(s, len)	__hash_more((s), (len), 0u)
    261 void	 __id_subwins(WINDOW *);
    262 void	 __init_getch(SCREEN *);
    263 void	 __init_acs(SCREEN *);
    264 char	*__longname(char *, char *);	/* Original BSD version */
    265 int	 __mvcur(int, int, int, int, int);
    266 WINDOW  *__newwin(SCREEN *, int, int, int, int);
    267 int	 __nodelay(void);
    268 int	 __notimeout(void);
    269 char	*__parse_cap(const char *, ...);
    270 void	 __restartwin(void);
    271 void	 __restore_colors(void);
    272 void     __restore_cursor_vis(void);
    273 void     __restore_meta_state(void);
    274 void	 __restore_termios(void);
    275 void	 __restore_stophandler(void);
    276 void	 __save_termios(void);
    277 void	 __set_color(attr_t attr);
    278 void	 __set_stophandler(void);
    279 void	 __set_subwin(WINDOW *, WINDOW *);
    280 void	 __startwin(SCREEN *);
    281 void	 __stop_signal_handler(int);
    282 int	 __stopwin(void);
    283 void	 __swflags(WINDOW *);
    284 int	 __timeout(int);
    285 int	 __touchline(WINDOW *, int, int, int);
    286 int	 __touchwin(WINDOW *);
    287 char	*__tscroll(const char *, int, int);
    288 void	 __unsetattr(int);
    289 int	 __waddch(WINDOW *, __LDATA *);
    290 int	 __wgetnstr(WINDOW *, char *, int);
    291 
    292 /* Private #defines. */
    293 #define	min(a,b)	((a) < (b) ? (a) : (b))
    294 #define	max(a,b)	((a) > (b) ? (a ): (b))
    295 
    296 /* Private externs. */
    297 extern int		 __echoit;
    298 extern int		 __endwin;
    299 extern int		 __pfast;
    300 extern int		 __rawmode;
    301 extern int		 __noqch;
    302 extern attr_t		 __nca;
    303 extern attr_t		 __mask_op, __mask_me, __mask_ue, __mask_se;
    304 extern struct __winlist	*__winlistp;
    305 extern WINDOW		*__virtscr;
    306