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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 7.7 (Berkeley) 3/9/87
- * @(#)ex_tty.h 1.2 (Bellcore) 87/04/24
- */
-
- /*
- * 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[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 */
- #ifdef HZ
- #undef HZ
- #endif
- 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! */
-
- /*
- * From the tty modes...
- */
- var bool NONL; /* Terminal can't hack linefeeds doing a CR */
- var bool UPPERCASE; /* Ick! */
- extern short LINES; /* Number of lines on screen */
- extern short COLUMNS;
- var short OCOLUMNS; /* Save COLUMNS for a hack in open mode */
- #ifdef TIOCGWINSZ
- var struct winsize winsz; /* Save window size for stopping comparisons */
- #endif
-
- 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 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 */
-
- #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 32 /* max number of macros of each kind */
- # define MAXCHARMACS 512 /* 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 */
-