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