/* Copyright (c) 1980 Regents of the University of California */
/* sccs id: @(#)ex_tty.h 6.1 %G% */
* 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,
* 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*.
char tspace
[256]; /* Space for capability strings */
char *aoftspace
; /* Address of tspace for relocation */
char *AL
; /* P* Add new blank line */
char *BC
; /* Back cursor */
char *BT
; /* P Back tab */
char *CD
; /* P* Clear to end of display */
char *CE
; /* P Clear to end of line */
char *CL
; /* P* Clear screen */
char *CM
; /* P Cursor motion */
char *xCR
; /* P Carriage return */
char *DC
; /* P* Delete character */
char *DL
; /* P* Delete line sequence */
char *DM
; /* Delete mode (enter) */
char *DO
; /* Down line sequence */
char *ED
; /* End delete mode */
char *EI
; /* End insert mode */
char *F0
,*F1
,*F2
,*F3
,*F4
,*F5
,*F6
,*F7
,*F8
,*F9
;
/* Strings sent by various function keys */
char *HO
; /* Home cursor */
char *IC
; /* P Insert character */
char *IM
; /* Insert mode (give as ':im=:' if 'ic' */
char *IP
; /* P* Insert pad after char ins'd using IM+IE */
char *KD
; /* Keypad down arrow */
char *KE
; /* Keypad don't xmit */
char *KH
; /* Keypad home key */
char *KL
; /* Keypad left arrow */
char *KR
; /* Keypad right arrow */
char *KS
; /* Keypad start xmitting */
char *KU
; /* Keypad up arrow */
char *LL
; /* Quick to last line, column 0 */
char *ND
; /* Non-destructive space */
char *xNL
; /* Line feed (new line) */
char PC
; /* Pad character */
char *SE
; /* Standout end (may leave space) */
char *SF
; /* P Scroll forwards */
char *SO
; /* Stand out begin (may leave space) */
char *SR
; /* P Scroll backwards */
char *TA
; /* P Tab (other than ^I or with padding) */
char *TE
; /* Terminal end sequence */
char *TI
; /* Terminal initial sequence */
char *VB
; /* Visible bell */
char *VE
; /* Visual end sequence */
char *VS
; /* Visual start sequence */
bool AM
; /* Automatic margins */
bool BS
; /* Backspace works */
bool CA
; /* Cursor addressible */
bool DA
; /* Display may be retained above */
bool DB
; /* Display may be retained below */
bool EO
; /* Can erase overstrikes with ' ' */
bool GT
; /* Gtty indicates tabs */
bool HC
; /* Hard copy terminal */
bool HZ
; /* Hazeltine ~ braindamage */
bool IN
; /* Insert-null blessing */
bool MI
; /* can move in insert mode */
bool NC
; /* No Cr - \r snds \r\n then eats \n (dm2500) */
bool NS
; /* No scroll - linefeed at bottom won't scroll */
bool OS
; /* Overstrike works */
bool UL
; /* Underlining works even though !os */
bool XB
; /* Beehive (no escape key, simulate with f1) */
bool XN
; /* A newline gets eaten after wrap (concept) */
bool XT
; /* Tabs are destructive */
bool XX
; /* Tektronix 4025 insert line */
/* X? is reserved for severely nauseous glitches */
/* If there are enough of these we may need bit masks! */
bool NONL
; /* Terminal can't hack linefeeds doing a CR */
bool UPPERCASE
; /* Ick! */
short LINES
; /* Number of lines on screen */
short OCOLUMNS
; /* Save COLUMNS for a hack in open mode */
short outcol
; /* Where the cursor is */
short destcol
; /* Where the cursor should be */
* 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.
* (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 */
struct termio tty
; /* Use this one structure to change modes */
typedef struct termio ttymode
; /* Mode to contain tty flags */
struct sgttyb tty
; /* Always stty/gtty using this one structure */
typedef int ttymode
; /* Mode to contain tty flags */
# ifdef TIOCSETC /* V7 */
struct tchars ottyc
, nttyc
; /* For V7 character masking */
# ifdef TIOCLGET /* Berkeley */
struct ltchars olttyc
, nlttyc
; /* More of tchars style stuff */
ttymode normf
; /* Restore tty flags to this (someday) */bool normtty
; /* Have to restore normal mode from normf */
ttymode
ostart(), setty(), unixex();short costCM
; /* # chars to output a typical CM, with padding etc. */
short costSR
; /* likewise */
# define MAXNOMACS 128 /* max number of macros of each kind */
# define MAXCHARMACS 2048 /* max # of chars total in macros */
# define MAXNOMACS 32 /* max number of macros of each kind */
# define MAXCHARMACS 512 /* max # of chars total in macros */
char *cap
; /* pressing button that sends this.. */
char *mapto
; /* .. maps to this string */
char *descr
; /* legible description of key */
struct maps arrows
[MAXNOMACS
]; /* macro defs - 1st 5 built in */
struct maps immacs
[MAXNOMACS
]; /* for while in insert mode */
struct maps abbrevs
[MAXNOMACS
]; /* for word abbreviations */
int ldisc
; /* line discipline for ucb tty driver */
char mapspace
[MAXCHARMACS
];
char *msnext
; /* next free location in mapspace */
int maphopcnt
; /* check for infinite mapping loops */
bool anyabbrs
; /* true if abbr or unabbr has been done */
char ttynbuf
[20]; /* result of ttyname() */
int ttymesg
; /* original mode of users tty */
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