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      1 /* $NetBSD: vt100_base.h,v 1.1 2010/02/10 19:39:39 drochner Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1998
      5  *	Matthias Drochner.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  *
     27  */
     28 
     29 #define	VT100_EMUL_NARGS	10	/* max # of args to a command */
     30 
     31 struct vt100base_data {
     32 	const struct wsdisplay_emulops *emulops;
     33 	void *emulcookie;
     34 	int scrcapabilities;
     35 	u_int nrows, ncols, crow, ccol;
     36 	struct wsdisplay_msgattrs msgattrs;
     37 	long defattr;			/* default attribute */
     38 
     39 	void *cbcookie;
     40 
     41 	int flags;
     42 #define VTFL_LASTCHAR	0x001	/* printed last char on line (below cursor) */
     43 #define VTFL_INSERTMODE	0x002
     44 #define VTFL_APPLKEYPAD	0x004
     45 #define VTFL_APPLCURSOR	0x008
     46 #define VTFL_DECOM	0x010	/* origin mode */
     47 #define VTFL_DECAWM	0x020	/* auto wrap */
     48 #define VTFL_CURSORON	0x040
     49 #define VTFL_NATCHARSET	0x080	/* national replacement charset mode */
     50 #define VTFL_SAVEDCURS	0x100	/* we have a saved cursor state */
     51 	long curattr, bkgdattr;		/* currently used attribute */
     52 	int attrflags, fgcol, bgcol;	/* properties of curattr */
     53 	u_int scrreg_startrow;
     54 	u_int scrreg_nrows;
     55 	char *tabs;
     56 	char *dblwid;
     57 	int dw;
     58 
     59 	int nargs;
     60 	u_int args[VT100_EMUL_NARGS]; /* numeric command args (CSI/DCS) */
     61 
     62 	char modif1;	/* {>?} in VT100_EMUL_STATE_CSI */
     63 	char modif2;	/* {!"$&} in VT100_EMUL_STATE_CSI */
     64 
     65 	int dcstype;		/* substate in VT100_EMUL_STATE_STRING */
     66 	char *dcsarg;
     67 	int dcspos;
     68 #define DCS_MAXLEN 256 /* ??? */
     69 #define DCSTYPE_TABRESTORE 1 /* DCS2$t */
     70 };
     71 
     72 /* some useful utility macros */
     73 #define	ARG(d, n)			((d)->args[(n)])
     74 #define	DEF1_ARG(d, n)		(ARG(d, n) ? ARG(d, n) : 1)
     75 #define	DEFx_ARG(d, n, x)		(ARG(d, n) ? ARG(d, n) : (x))
     76 /* the following two can be negative if we are outside the scrolling region */
     77 #define ROWS_ABOVE(d)	((int)(d)->crow - (int)(d)->scrreg_startrow)
     78 #define ROWS_BELOW(d)	((int)((d)->scrreg_startrow + (d)->scrreg_nrows) \
     79 					- (int)(d)->crow - 1)
     80 #define CHECK_DW(d) do { \
     81 	if ((d)->dblwid && (d)->dblwid[(d)->crow]) { \
     82 		(d)->dw = 1; \
     83 		if ((d)->ccol > ((d)->ncols >> 1) - 1) \
     84 			(d)->ccol = ((d)->ncols >> 1) - 1; \
     85 	} else \
     86 		(d)->dw = 0; \
     87 } while (0)
     88 #define NCOLS(d)	((d)->ncols >> (d)->dw)
     89 #define	COLS_LEFT(d)	(NCOLS(d) - (d)->ccol - 1)
     90 #define COPYCOLS(d, f, t, n) (*(d)->emulops->copycols)((d)->emulcookie, \
     91 	(d)->crow, (f) << (d)->dw, (t) << (d)->dw, (n) << (d)->dw)
     92 #define ERASECOLS(d, f, n, a) (*(d)->emulops->erasecols)((d)->emulcookie, \
     93 	(d)->crow, (f) << (d)->dw, (n) << (d)->dw, a)
     94 
     95 /*
     96  * response to primary DA request
     97  * operating level: 61 = VT100, 62 = VT200, 63 = VT300
     98  * extensions: 1 = 132 cols, 2 = printer port, 6 = selective erase,
     99  *	7 = soft charset, 8 = UDKs, 9 = NRC sets
    100  * VT100 = "033[?1;2c"
    101  */
    102 #define WSEMUL_VT_ID1 "\033[?62;6c"
    103 /*
    104  * response to secondary DA request
    105  * ident code: 24 = VT320
    106  * firmware version
    107  * hardware options: 0 = no options
    108  */
    109 #define WSEMUL_VT_ID2 "\033[>24;20;0c"
    110 
    111 void wsemul_vt100_scrollup(struct vt100base_data *, int);
    112 void wsemul_vt100_scrolldown(struct vt100base_data *, int);
    113 void wsemul_vt100_ed(struct vt100base_data *, int);
    114 void wsemul_vt100_el(struct vt100base_data *, int);
    115 void wsemul_vt100_handle_csi(struct vt100base_data *, u_char);
    116 void wsemul_vt100_handle_dcs(struct vt100base_data *);
    117