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/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)ex_tty.h 7.5.1 (2.11BSD GTE) 12/9/94
*/
/*
* Capabilities from termcap
*
* The description of terminals is a difficult business, and we only
* attempt to summarize the capabilities here; for a full description
* see the paper describing termcap.
*
* Capabilities from termcap are of three kinds - string valued options,
* numeric valued options, and boolean options. The string valued options
* are the most complicated, since they may include padding information,
* which we describe now.
*
* Intelligent terminals often require padding on intelligent operations
* at high (and sometimes even low) speed. This is specified by
* a number before the string in the capability, and has meaning for the
* capabilities which have a P at the front of their comment.
* This normally is a number of milliseconds to pad the operation.
* In the current system which has no true programmible delays, we
* do this by sending a sequence of pad characters (normally nulls, but
* specifiable as "pc"). In some cases, the pad is better computed
* as some number of milliseconds times the number of affected lines
* (to bottom of screen usually, except when terminals have insert modes
* which will shift several lines.) This is specified as '12*' e.g.
* before the capability to say 12 milliseconds per affected whatever
* (currently always line). Capabilities where this makes sense say P*.
*/
var char tspace[256]; /* Space for capability strings */
var char *aoftspace; /* Address of tspace for relocation */
var char *AL; /* P* Add new blank line */
var char *AL_PARM; /* P* Add n new blank lines */
extern char *BC; /* Back cursor */
var char *BT; /* P Back tab */
var char *CD; /* P* Clear to end of display */
var char *CE; /* P Clear to end of line */
var char *CL; /* P* Clear screen */
var char *CM; /* PG Cursor motion */
var char *CS; /* PG Change scrolling region (vt100) */
var char *xCR; /* P Carriage return */
var char *DC; /* P* Delete character */
var char *DL; /* P* Delete line sequence */
var char *DL_PARM; /* P* Delete n lines */
var char *DM; /* Delete mode (enter) */
var char *DO; /* Down line sequence */
var char *DOWN_PARM; /* Down n lines */
var char *ED; /* End delete mode */
var char *EI; /* End insert mode */
var char *F0,*F1,*F2,*F3,*F4,*F5,*F6,*F7,*F8,*F9;
/* Strings sent by various function keys */
var char *HO; /* Home cursor */
var char *IC; /* P Insert character */
var char *IM; /* Insert mode (give as ':im=:' if 'ic' */
var char *IP; /* P* Insert pad after char ins'd using IM+IE */
var char *KD; /* Keypad down arrow */
var char *KE; /* Keypad don't xmit */
var char *KH; /* Keypad home key */
var char *KL; /* Keypad left arrow */
var char *KR; /* Keypad right arrow */
var char *KS; /* Keypad start xmitting */
var char *KU; /* Keypad up arrow */
var char *LEFT_PARM; /* Left n chars */
var char *LL; /* Quick to last line, column 0 */
var char *ND; /* Non-destructive space */
var char *RIGHT_PARM; /* Right n spaces */
var char *xNL; /* Line feed (new line) */
extern char PC; /* Pad character */
var char *RC; /* Restore cursor from last SC */
var char *SC; /* Save cursor */
var char *SE; /* Standout end (may leave space) */
var char *SF; /* P Scroll forwards */
var char *SO; /* Stand out begin (may leave space) */
var char *SR; /* P Scroll backwards */
var char *TA; /* P Tab (other than ^I or with padding) */
var char *TE; /* Terminal end sequence */
var char *TI; /* Terminal initial sequence */
extern char *UP; /* Upline */
var char *UP_PARM; /* Up n lines */
var char *VB; /* Visible bell */
var char *VE; /* Visual end sequence */
var char *VS; /* Visual start sequence */
var bool AM; /* Automatic margins */
var bool BS; /* Backspace works */
var bool CA; /* Cursor addressible */
var bool DA; /* Display may be retained above */
var bool DB; /* Display may be retained below */
var bool EO; /* Can erase overstrikes with ' ' */
var bool GT; /* Gtty indicates tabs */
var bool HC; /* Hard copy terminal */
var bool IN; /* Insert-null blessing */
var bool MI; /* can move in insert mode */
var bool NC; /* No Cr - \r snds \r\n then eats \n (dm2500) */
var bool NS; /* No scroll - linefeed at bottom won't scroll */
var bool OS; /* Overstrike works */
var bool UL; /* Underlining works even though !os */
var bool XB; /* Beehive (no escape key, simulate with f1) */
var bool XN; /* A newline gets eaten after wrap (concept) */
var bool XT; /* Tabs are destructive */
var bool XX; /* Tektronix 4025 insert line */
/* X? is reserved for severely nauseous glitches */
/* If there are enough of these we may need bit masks! */
/*
* From the tty modes...
*/
var bool NONL; /* Terminal can't hack linefeeds doing a CR */
extern short LINES; /* Number of lines on screen */
extern short COLUMNS;
var short OCOLUMNS; /* Save COLUMNS for a hack in open mode */
var struct winsize winsz; /* Save window size for stopping comparisons */
var short outcol; /* Where the cursor is */
var short outline;
var short destcol; /* Where the cursor should be */
var short destline;
/*
* There are several kinds of tty drivers to contend with. These include:
* (1) V6: no CBREAK, no ioctl. (Include PWB V1 here).
* (2) V7 research: has CBREAK, has ioctl, and has the tchars (TIOCSETC)
* business to change start, stop, etc. chars.
* (3) USG V2: Basically like V6 but RAW mode is like V7 RAW.
* (We treat it as V6.)
* (4) USG V3: equivalent to V7 but totally incompatible.
* (5) Berkeley: has ltchars in addition to all of V7.
*
* The following attempts to decide what we are on, and declare
* some variables in the appropriate format. The wierd looking one (ttymode)
* is the thing we pass to sTTY and family to turn "RAW" mode on or off
* when we go into or out of visual mode. In V7/V6 it's just the flags word
* to stty. In USG V3 it's the whole tty structure.
*/
#ifdef USG3TTY /* USG V3 */
var struct termios tty; /* Use this one structure to change modes */
typedef struct termios ttymode; /* Mode to contain tty flags */
#else /* All others */
var struct sgttyb tty; /* Always stty/gtty using this one structure */
typedef int ttymode; /* Mode to contain tty flags */
# ifdef TIOCSETC /* V7 */
var struct tchars ottyc, nttyc; /* For V7 character masking */
# endif
# ifdef TIOCLGET /* Berkeley */
var struct ltchars olttyc, nlttyc; /* More of tchars style stuff */
# endif
#endif
var ttymode normf; /* Restore tty flags to this (someday) */
var bool normtty; /* Have to restore normal mode from normf */
ttymode ostart(), setty(), unixex();
var short costCM; /* # chars to output a typical CM, with padding etc. */
var short costSR; /* likewise for scroll reverse */
var short costAL; /* likewise for insert line */
var short costDP; /* likewise for DOWN_PARM */
var short costLP; /* likewise for LEFT_PARM */
var short costRP; /* likewise for RIGHT_PARM */
#ifdef VMUNIX
# define MAXNOMACS 128 /* max number of macros of each kind */
# define MAXCHARMACS 2048 /* max # of chars total in macros */
#else
# define MAXNOMACS 48 /* max number of macros of each kind */
# define MAXCHARMACS 1536 /* max # of chars total in macros */
#endif
struct maps {
char *cap; /* pressing button that sends this.. */
char *mapto; /* .. maps to this string */
char *descr; /* legible description of key */
};
var struct maps arrows[MAXNOMACS]; /* macro defs - 1st 5 built in */
var struct maps immacs[MAXNOMACS]; /* for while in insert mode */
var struct maps abbrevs[MAXNOMACS]; /* for word abbreviations */
var int ldisc; /* line discipline for ucb tty driver */
var char mapspace[MAXCHARMACS];
var char *msnext; /* next free location in mapspace */
var int maphopcnt; /* check for infinite mapping loops */
var bool anyabbrs; /* true if abbr or unabbr has been done */
var char ttynbuf[20]; /* result of ttyname() */
var int ttymesg; /* original mode of users tty */