1 /*- 2 * Copyright (c) 1980 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.proprietary.c% 6 * 7 * @(#)ex_tty.h 7.8 (Berkeley) 04/17/91 8 */ 9 10 /* 11 * Capabilities from termcap 12 * 13 * The description of terminals is a difficult business, and we only 14 * attempt to summarize the capabilities here; for a full description 15 * see the paper describing termcap. 16 * 17 * Capabilities from termcap are of three kinds - string valued options, 18 * numeric valued options, and boolean options. The string valued options 19 * are the most complicated, since they may include padding information, 20 * which we describe now. 21 * 22 * Intelligent terminals often require padding on intelligent operations 23 * at high (and sometimes even low) speed. This is specified by 24 * a number before the string in the capability, and has meaning for the 25 * capabilities which have a P at the front of their comment. 26 * This normally is a number of milliseconds to pad the operation. 27 * In the current system which has no true programmible delays, we 28 * do this by sending a sequence of pad characters (normally nulls, but 29 * specifiable as "pc"). In some cases, the pad is better computed 30 * as some number of milliseconds times the number of affected lines 31 * (to bottom of screen usually, except when terminals have insert modes 32 * which will shift several lines.) This is specified as '12*' e.g. 33 * before the capability to say 12 milliseconds per affected whatever 34 * (currently always line). Capabilities where this makes sense say P*. 35 */ 36 var char tspace[1024]; /* Space for capability strings */ 37 var char *aoftspace; /* Address of tspace for relocation */ 38 39 var char *AL; /* P* Add new blank line */ 40 var char *AL_PARM; /* P* Add n new blank lines */ 41 extern char *BC; /* Back cursor */ 42 var char *BT; /* P Back tab */ 43 var char *CD; /* P* Clear to end of display */ 44 var char *CE; /* P Clear to end of line */ 45 var char *CL; /* P* Clear screen */ 46 var char *CM; /* PG Cursor motion */ 47 var char *CS; /* PG Change scrolling region (vt100) */ 48 var char *xCR; /* P Carriage return */ 49 var char *DC; /* P* Delete character */ 50 var char *DL; /* P* Delete line sequence */ 51 var char *DL_PARM; /* P* Delete n lines */ 52 var char *DM; /* Delete mode (enter) */ 53 var char *DO; /* Down line sequence */ 54 var char *DOWN_PARM; /* Down n lines */ 55 var char *ED; /* End delete mode */ 56 var char *EI; /* End insert mode */ 57 var char *F0,*F1,*F2,*F3,*F4,*F5,*F6,*F7,*F8,*F9; 58 /* Strings sent by various function keys */ 59 var char *HO; /* Home cursor */ 60 var char *IC; /* P Insert character */ 61 var char *IM; /* Insert mode (give as ':im=:' if 'ic' */ 62 var char *IP; /* P* Insert pad after char ins'd using IM+IE */ 63 var char *KD; /* Keypad down arrow */ 64 var char *KE; /* Keypad don't xmit */ 65 var char *KH; /* Keypad home key */ 66 var char *KL; /* Keypad left arrow */ 67 var char *KR; /* Keypad right arrow */ 68 var char *KS; /* Keypad start xmitting */ 69 var char *KU; /* Keypad up arrow */ 70 var char *LEFT_PARM; /* Left n chars */ 71 var char *LL; /* Quick to last line, column 0 */ 72 var char *ND; /* Non-destructive space */ 73 var char *RIGHT_PARM; /* Right n spaces */ 74 var char *xNL; /* Line feed (new line) */ 75 extern char PC; /* Pad character */ 76 var char *RC; /* Restore cursor from last SC */ 77 var char *SC; /* Save cursor */ 78 var char *SE; /* Standout end (may leave space) */ 79 var char *SF; /* P Scroll forwards */ 80 var char *SO; /* Stand out begin (may leave space) */ 81 var char *SR; /* P Scroll backwards */ 82 var char *TA; /* P Tab (other than ^I or with padding) */ 83 var char *TE; /* Terminal end sequence */ 84 var char *TI; /* Terminal initial sequence */ 85 extern char *UP; /* Upline */ 86 var char *UP_PARM; /* Up n lines */ 87 var char *VB; /* Visible bell */ 88 var char *VE; /* Visual end sequence */ 89 var char *VS; /* Visual start sequence */ 90 var bool AM; /* Automatic margins */ 91 var bool BS; /* Backspace works */ 92 var bool CA; /* Cursor addressible */ 93 var bool DA; /* Display may be retained above */ 94 var bool DB; /* Display may be retained below */ 95 var bool EO; /* Can erase overstrikes with ' ' */ 96 var bool GT; /* Gtty indicates tabs */ 97 var bool HC; /* Hard copy terminal */ 98 var bool HZ; /* Hazeltine ~ braindamage */ 99 var bool IN; /* Insert-null blessing */ 100 var bool MI; /* can move in insert mode */ 101 var bool NC; /* No Cr - \r snds \r\n then eats \n (dm2500) */ 102 var bool NS; /* No scroll - linefeed at bottom won't scroll */ 103 var bool OS; /* Overstrike works */ 104 var bool UL; /* Underlining works even though !os */ 105 var bool XB; /* Beehive (no escape key, simulate with f1) */ 106 var bool XN; /* A newline gets eaten after wrap (concept) */ 107 var bool XT; /* Tabs are destructive */ 108 var bool XX; /* Tektronix 4025 insert line */ 109 /* X? is reserved for severely nauseous glitches */ 110 /* If there are enough of these we may need bit masks! */ 111 112 /* 113 * From the tty modes... 114 */ 115 var bool NONL; /* Terminal can't hack linefeeds doing a CR */ 116 var bool UPPERCASE; /* Ick! */ 117 extern short LINES; /* Number of lines on screen */ 118 extern short COLUMNS; 119 var short OCOLUMNS; /* Save COLUMNS for a hack in open mode */ 120 #ifdef TIOCGWINSZ 121 var struct winsize winsz; /* Save window size for stopping comparisons */ 122 #endif 123 124 var short outcol; /* Where the cursor is */ 125 var short outline; 126 127 var short destcol; /* Where the cursor should be */ 128 var short destline; 129 130 /* 131 * There are several kinds of tty drivers to contend with. These include: 132 * (1) V6: no CBREAK, no ioctl. (Include PWB V1 here). 133 * (2) V7 research: has CBREAK, has ioctl, and has the tchars (TIOCSETC) 134 * business to change start, stop, etc. chars. 135 * (3) USG V2: Basically like V6 but RAW mode is like V7 RAW. 136 * (We treat it as V6.) 137 * (4) USG V3: equivalent to V7 but totally incompatible. 138 * (5) Berkeley: has ltchars in addition to all of V7. 139 * 140 * The following attempts to decide what we are on, and declare 141 * some variables in the appropriate format. The wierd looking one (ttymode) 142 * is the thing we pass to ex_sTTY and family to turn "RAW" mode on or off 143 * when we go into or out of visual mode. In V7/V6 it's just the flags word 144 * to stty. In USG V3 it's the whole tty structure. 145 */ 146 #ifdef USG3TTY /* USG V3 */ 147 var struct termio tty; /* Use this one structure to change modes */ 148 typedef struct termio ttymode; /* Mode to contain tty flags */ 149 150 #else /* All others */ 151 var struct sgttyb tty; /* Always stty/gtty using this one structure */ 152 typedef int ttymode; /* Mode to contain tty flags */ 153 # ifdef TIOCSETC /* V7 */ 154 var struct tchars ottyc, nttyc; /* For V7 character masking */ 155 # endif 156 # ifdef TIOCLGET /* Berkeley */ 157 var struct ltchars olttyc, nlttyc; /* More of tchars style stuff */ 158 # endif 159 160 #endif 161 162 var ttymode normf; /* Restore tty flags to this (someday) */ 163 var bool normtty; /* Have to restore normal mode from normf */ 164 165 ttymode ostart(), setty(), unixex(); 166 167 var short costCM; /* # chars to output a typical CM, with padding etc. */ 168 var short costSR; /* likewise for scroll reverse */ 169 var short costAL; /* likewise for insert line */ 170 var short costDP; /* likewise for DOWN_PARM */ 171 var short costLP; /* likewise for LEFT_PARM */ 172 var short costRP; /* likewise for RIGHT_PARM */ 173 174 #ifdef VMUNIX 175 # define MAXNOMACS 128 /* max number of macros of each kind */ 176 # define MAXCHARMACS 2048 /* max # of chars total in macros */ 177 #else 178 # define MAXNOMACS 32 /* max number of macros of each kind */ 179 # define MAXCHARMACS 512 /* max # of chars total in macros */ 180 #endif 181 struct maps { 182 char *cap; /* pressing button that sends this.. */ 183 char *mapto; /* .. maps to this string */ 184 char *descr; /* legible description of key */ 185 }; 186 var struct maps arrows[MAXNOMACS]; /* macro defs - 1st 5 built in */ 187 var struct maps immacs[MAXNOMACS]; /* for while in insert mode */ 188 var struct maps abbrevs[MAXNOMACS]; /* for word abbreviations */ 189 var int ldisc; /* line discipline for ucb tty driver */ 190 var char mapspace[MAXCHARMACS]; 191 var char *msnext; /* next free location in mapspace */ 192 var int maphopcnt; /* check for infinite mapping loops */ 193 var bool anyabbrs; /* true if abbr or unabbr has been done */ 194 var char ttynbuf[20]; /* result of ttyname() */ 195 var int ttymesg; /* original mode of users tty */ 196