* 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 7.7 (Berkeley) %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*.
var
char tspace
[1024]; /* 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 HZ
; /* Hazeltine ~ braindamage */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! */
var
bool NONL
; /* Terminal can't hack linefeeds doing a CR */var
bool UPPERCASE
; /* Ick! */extern short LINES
; /* Number of lines on screen */
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 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 ex_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 termio tty
; /* Use this one structure to change modes */ typedef struct termio ttymode
; /* Mode to contain tty flags */
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 */# ifdef TIOCLGET /* Berkeley */
var
struct ltchars olttyc
, nlttyc
; /* More of tchars style stuff */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 */# 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 */
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 */
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