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/* $OpenBSD: tt.h,v 1.4 2003/06/03 02:56:23 millert Exp $ */
/* $NetBSD: tt.h,v 1.3 1995/09/28 10:34:42 tls Exp $ */
/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)tt.h 8.1 (Berkeley) 6/6/93
*/
/*
* Interface structure for the terminal drivers.
*/
struct tt {
/* startup and cleanup */
int (*tt_start)();
int (*tt_reset)();
int (*tt_end)();
/* terminal functions */
int (*tt_move)();
int (*tt_insline)();
int (*tt_delline)();
int (*tt_inschar)();
int (*tt_insspace)();
int (*tt_delchar)();
int (*tt_write)(); /* write a whole block */
int (*tt_putc)(); /* write one character */
int (*tt_clreol)();
int (*tt_clreos)();
int (*tt_clear)();
int (*tt_scroll_down)();
int (*tt_scroll_up)();
int (*tt_setscroll)(); /* set scrolling region */
int (*tt_setmodes)(); /* set display modes */
int (*tt_set_token)(); /* define a token */
int (*tt_put_token)(); /* refer to a defined token */
int (*tt_compress)(); /* begin, end compression */
int (*tt_checksum)(); /* compute checksum */
int (*tt_checkpoint)(); /* checkpoint protocol */
int (*tt_rint)(); /* input processing */
/* internal variables */
char tt_modes; /* the current display modes */
char tt_nmodes; /* the new modes for next write */
char tt_insert; /* currently in insert mode */
int tt_row; /* cursor row */
int tt_col; /* cursor column */
int tt_scroll_top; /* top of scrolling region */
int tt_scroll_bot; /* bottom of scrolling region */
/* terminal info */
int tt_nrow; /* number of display rows */
int tt_ncol; /* number of display columns */
char tt_availmodes; /* the display modes supported */
char tt_wrap; /* has auto wrap around */
char tt_retain; /* can retain below (db flag) */
short tt_padc; /* the pad character */
int tt_ntoken; /* number of compression tokens */
int tt_token_min; /* minimun token size */
int tt_token_max; /* maximum token size */
int tt_set_token_cost; /* cost in addition to string */
int tt_put_token_cost; /* constant cost */
int tt_ack; /* checkpoint ack-nack flag */
/* the frame characters */
short *tt_frame;
/* ttflush() hook */
int (*tt_flush)();
};
struct tt tt;
/*
* tt_padc is used by the compression routine.
* It is a short to allow the driver to indicate that there is no padding.
*/
#define TT_PADC_NONE 0x100
/*
* List of terminal drivers.
*/
struct tt_tab {
char *tt_name;
int tt_len;
int (*tt_func)();
};
extern struct tt_tab tt_tab[];
/*
* Clean interface to termcap routines.
* Too may t's.
*/
char tt_strings[1024]; /* string buffer */
char *tt_strp; /* pointer for it */
struct tt_str {
char *ts_str;
int ts_n;
};
struct tt_str *tttgetstr();
struct tt_str *ttxgetstr(); /* tgetstr() and expand delays */
int tttputc();
#define tttputs(s, n) tputs((s)->ts_str, (n), tttputc)
#define ttxputs(s) ttwrite((s)->ts_str, (s)->ts_n)
/*
* Buffered output without stdio.
* These variables have different meanings from the ww_ob* variables.
* But I'm too lazy to think up different names.
*/
char *tt_ob;
char *tt_obp;
char *tt_obe;
#define ttputc(c) (tt_obp < tt_obe ? (*tt_obp++ = (c)) \
: (ttflush(), *tt_obp++ = (c)))
/*
* Convenience macros for the drivers
* They require char.h
*/
#define ttctrl(c) ttputc(ctrl(c))
#define ttesc(c) (ttctrl('['), ttputc(c))
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