/* * Copyright (c) 1983 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 are permitted provided * that: (1) source distributions retain this entire copyright notice and * comment, and (2) distributions including binaries display the following * acknowledgement: ``This product includes software developed by the * University of California, Berkeley and its contributors'' in the * documentation or other materials provided with the distribution and in * all advertising materials mentioning features or use of this software. * 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. * * @(#)tt.h 3.27 (Berkeley) 6/6/90 */ /* * Interface structure for the terminal drivers. */ struct tt { /* startup and cleanup */ int (*tt_start)(); 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 */ /* 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 */ /* the frame characters */ short *tt_frame; /* the output routine */ 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)) \ : ((*tt.tt_flush)(), *tt_obp++ = (c))) /* * Convenience macros for the drivers * They require char.h */ #define ttctrl(c) ttputc(ctrl(c)) #define ttesc(c) (ttctrl('['), ttputc(c))