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1.1 root 1: /* Copyright (c) 1980 Regents of the University of California */
2: /* sccs id: @(#)ex_tty.h 6.1 10/18/80 */
3: /*
4: * Capabilities from termcap
5: *
6: * The description of terminals is a difficult business, and we only
7: * attempt to summarize the capabilities here; for a full description
8: * see the paper describing termcap.
9: *
10: * Capabilities from termcap are of three kinds - string valued options,
11: * numeric valued options, and boolean options. The string valued options
12: * are the most complicated, since they may include padding information,
13: * which we describe now.
14: *
15: * Intelligent terminals often require padding on intelligent operations
16: * at high (and sometimes even low) speed. This is specified by
17: * a number before the string in the capability, and has meaning for the
18: * capabilities which have a P at the front of their comment.
19: * This normally is a number of milliseconds to pad the operation.
20: * In the current system which has no true programmible delays, we
21: * do this by sending a sequence of pad characters (normally nulls, but
22: * specifiable as "pc"). In some cases, the pad is better computed
23: * as some number of milliseconds times the number of affected lines
24: * (to bottom of screen usually, except when terminals have insert modes
25: * which will shift several lines.) This is specified as '12*' e.g.
26: * before the capability to say 12 milliseconds per affected whatever
27: * (currently always line). Capabilities where this makes sense say P*.
28: */
29: char tspace[256]; /* Space for capability strings */
30: char *aoftspace; /* Address of tspace for relocation */
31:
32: char *AL; /* P* Add new blank line */
33: char *BC; /* Back cursor */
34: char *BT; /* P Back tab */
35: char *CD; /* P* Clear to end of display */
36: char *CE; /* P Clear to end of line */
37: char *CL; /* P* Clear screen */
38: char *CM; /* P Cursor motion */
39: char *xCR; /* P Carriage return */
40: char *DC; /* P* Delete character */
41: char *DL; /* P* Delete line sequence */
42: char *DM; /* Delete mode (enter) */
43: char *DO; /* Down line sequence */
44: char *ED; /* End delete mode */
45: char *EI; /* End insert mode */
46: char *F0,*F1,*F2,*F3,*F4,*F5,*F6,*F7,*F8,*F9;
47: /* Strings sent by various function keys */
48: char *HO; /* Home cursor */
49: char *IC; /* P Insert character */
50: char *IM; /* Insert mode (give as ':im=:' if 'ic' */
51: char *IP; /* P* Insert pad after char ins'd using IM+IE */
52: char *KD; /* Keypad down arrow */
53: char *KE; /* Keypad don't xmit */
54: char *KH; /* Keypad home key */
55: char *KL; /* Keypad left arrow */
56: char *KR; /* Keypad right arrow */
57: char *KS; /* Keypad start xmitting */
58: char *KU; /* Keypad up arrow */
59: char *LL; /* Quick to last line, column 0 */
60: char *ND; /* Non-destructive space */
61: char *xNL; /* Line feed (new line) */
62: char PC; /* Pad character */
63: char *SE; /* Standout end (may leave space) */
64: char *SF; /* P Scroll forwards */
65: char *SO; /* Stand out begin (may leave space) */
66: char *SR; /* P Scroll backwards */
67: char *TA; /* P Tab (other than ^I or with padding) */
68: char *TE; /* Terminal end sequence */
69: char *TI; /* Terminal initial sequence */
70: char *UP; /* Upline */
71: char *VB; /* Visible bell */
72: char *VE; /* Visual end sequence */
73: char *VS; /* Visual start sequence */
74: bool AM; /* Automatic margins */
75: bool BS; /* Backspace works */
76: bool CA; /* Cursor addressible */
77: bool DA; /* Display may be retained above */
78: bool DB; /* Display may be retained below */
79: bool EO; /* Can erase overstrikes with ' ' */
80: bool GT; /* Gtty indicates tabs */
81: bool HC; /* Hard copy terminal */
82: bool HZ; /* Hazeltine ~ braindamage */
83: bool IN; /* Insert-null blessing */
84: bool MI; /* can move in insert mode */
85: bool NC; /* No Cr - \r snds \r\n then eats \n (dm2500) */
86: bool NS; /* No scroll - linefeed at bottom won't scroll */
87: bool OS; /* Overstrike works */
88: bool UL; /* Underlining works even though !os */
89: bool XB; /* Beehive (no escape key, simulate with f1) */
90: bool XN; /* A newline gets eaten after wrap (concept) */
91: bool XT; /* Tabs are destructive */
92: bool XX; /* Tektronix 4025 insert line */
93: /* X? is reserved for severely nauseous glitches */
94: /* If there are enough of these we may need bit masks! */
95:
96: /*
97: * From the tty modes...
98: */
99: bool NONL; /* Terminal can't hack linefeeds doing a CR */
100: bool UPPERCASE; /* Ick! */
101: short LINES; /* Number of lines on screen */
102: short COLUMNS;
103: short OCOLUMNS; /* Save COLUMNS for a hack in open mode */
104:
105: short outcol; /* Where the cursor is */
106: short outline;
107:
108: short destcol; /* Where the cursor should be */
109: short destline;
110:
111: /*
112: * There are several kinds of tty drivers to contend with. These include:
113: * (1) V6: no CBREAK, no ioctl. (Include PWB V1 here).
114: * (2) V7 research: has CBREAK, has ioctl, and has the tchars (TIOCSETC)
115: * business to change start, stop, etc. chars.
116: * (3) USG V2: Basically like V6 but RAW mode is like V7 RAW.
117: * (We treat it as V6.)
118: * (4) USG V3: equivalent to V7 but totally incompatible.
119: * (5) Berkeley: has ltchars in addition to all of V7.
120: *
121: * The following attempts to decide what we are on, and declare
122: * some variables in the appropriate format. The wierd looking one (ttymode)
123: * is the thing we pass to sTTY and family to turn "RAW" mode on or off
124: * when we go into or out of visual mode. In V7/V6 it's just the flags word
125: * to stty. In USG V3 it's the whole tty structure.
126: */
127: #ifdef USG3TTY /* USG V3 */
128: struct termio tty; /* Use this one structure to change modes */
129: typedef struct termio ttymode; /* Mode to contain tty flags */
130:
131: #else /* All others */
132: struct sgttyb tty; /* Always stty/gtty using this one structure */
133: typedef int ttymode; /* Mode to contain tty flags */
134: # ifdef TIOCSETC /* V7 */
135: struct tchars ottyc, nttyc; /* For V7 character masking */
136: # endif
137: # ifdef TIOCLGET /* Berkeley */
138: struct ltchars olttyc, nlttyc; /* More of tchars style stuff */
139: # endif
140:
141: #endif
142:
143: ttymode normf; /* Restore tty flags to this (someday) */
144: bool normtty; /* Have to restore normal mode from normf */
145:
146: ttymode ostart(), setty(), unixex();
147:
148: short WBOT;
149: short WECHO;
150:
151: short costCM; /* # chars to output a typical CM, with padding etc. */
152: short costSR; /* likewise */
153: short costAL;
154:
155: #ifdef VMUNIX
156: # define MAXNOMACS 128 /* max number of macros of each kind */
157: # define MAXCHARMACS 2048 /* max # of chars total in macros */
158: #else
159: # define MAXNOMACS 32 /* max number of macros of each kind */
160: # define MAXCHARMACS 512 /* max # of chars total in macros */
161: #endif
162: struct maps {
163: char *cap; /* pressing button that sends this.. */
164: char *mapto; /* .. maps to this string */
165: char *descr; /* legible description of key */
166: };
167: struct maps arrows[MAXNOMACS]; /* macro defs - 1st 5 built in */
168: struct maps immacs[MAXNOMACS]; /* for while in insert mode */
169: struct maps abbrevs[MAXNOMACS]; /* for word abbreviations */
170: int ldisc; /* line discipline for ucb tty driver */
171: char mapspace[MAXCHARMACS];
172: char *msnext; /* next free location in mapspace */
173: int maphopcnt; /* check for infinite mapping loops */
174: bool anyabbrs; /* true if abbr or unabbr has been done */
175: char ttynbuf[20]; /* result of ttyname() */
176: int ttymesg; /* original mode of users tty */
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