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1.1 root 1: /*
2: * Copyright (c) 1980 Regents of the University of California.
3: * All rights reserved. The Berkeley software License Agreement
4: * specifies the terms and conditions for redistribution.
5: *
6: * @(#)ex_tty.h 7.5 (Berkeley) 5/31/85
7: */
8:
9: /*
10: * Capabilities from termcap
11: *
12: * The description of terminals is a difficult business, and we only
13: * attempt to summarize the capabilities here; for a full description
14: * see the paper describing termcap.
15: *
16: * Capabilities from termcap are of three kinds - string valued options,
17: * numeric valued options, and boolean options. The string valued options
18: * are the most complicated, since they may include padding information,
19: * which we describe now.
20: *
21: * Intelligent terminals often require padding on intelligent operations
22: * at high (and sometimes even low) speed. This is specified by
23: * a number before the string in the capability, and has meaning for the
24: * capabilities which have a P at the front of their comment.
25: * This normally is a number of milliseconds to pad the operation.
26: * In the current system which has no true programmible delays, we
27: * do this by sending a sequence of pad characters (normally nulls, but
28: * specifiable as "pc"). In some cases, the pad is better computed
29: * as some number of milliseconds times the number of affected lines
30: * (to bottom of screen usually, except when terminals have insert modes
31: * which will shift several lines.) This is specified as '12*' e.g.
32: * before the capability to say 12 milliseconds per affected whatever
33: * (currently always line). Capabilities where this makes sense say P*.
34: */
35: var char tspace[256]; /* Space for capability strings */
36: var char *aoftspace; /* Address of tspace for relocation */
37:
38: var char *AL; /* P* Add new blank line */
39: var char *AL_PARM; /* P* Add n new blank lines */
40: extern char *BC; /* Back cursor */
41: var char *BT; /* P Back tab */
42: var char *CD; /* P* Clear to end of display */
43: var char *CE; /* P Clear to end of line */
44: var char *CL; /* P* Clear screen */
45: var char *CM; /* PG Cursor motion */
46: var char *CS; /* PG Change scrolling region (vt100) */
47: var char *xCR; /* P Carriage return */
48: var char *DC; /* P* Delete character */
49: var char *DL; /* P* Delete line sequence */
50: var char *DL_PARM; /* P* Delete n lines */
51: var char *DM; /* Delete mode (enter) */
52: var char *DO; /* Down line sequence */
53: var char *DOWN_PARM; /* Down n lines */
54: var char *ED; /* End delete mode */
55: var char *EI; /* End insert mode */
56: var char *F0,*F1,*F2,*F3,*F4,*F5,*F6,*F7,*F8,*F9;
57: /* Strings sent by various function keys */
58: var char *HO; /* Home cursor */
59: var char *IC; /* P Insert character */
60: var char *IM; /* Insert mode (give as ':im=:' if 'ic' */
61: var char *IP; /* P* Insert pad after char ins'd using IM+IE */
62: var char *KD; /* Keypad down arrow */
63: var char *KE; /* Keypad don't xmit */
64: var char *KH; /* Keypad home key */
65: var char *KL; /* Keypad left arrow */
66: var char *KR; /* Keypad right arrow */
67: var char *KS; /* Keypad start xmitting */
68: var char *KU; /* Keypad up arrow */
69: var char *LEFT_PARM; /* Left n chars */
70: var char *LL; /* Quick to last line, column 0 */
71: var char *ND; /* Non-destructive space */
72: var char *RIGHT_PARM; /* Right n spaces */
73: var char *xNL; /* Line feed (new line) */
74: extern char PC; /* Pad character */
75: var char *RC; /* Restore cursor from last SC */
76: var char *SC; /* Save cursor */
77: var char *SE; /* Standout end (may leave space) */
78: var char *SF; /* P Scroll forwards */
79: var char *SO; /* Stand out begin (may leave space) */
80: var char *SR; /* P Scroll backwards */
81: var char *TA; /* P Tab (other than ^I or with padding) */
82: var char *TE; /* Terminal end sequence */
83: var char *TI; /* Terminal initial sequence */
84: extern char *UP; /* Upline */
85: var char *UP_PARM; /* Up n lines */
86: var char *VB; /* Visible bell */
87: var char *VE; /* Visual end sequence */
88: var char *VS; /* Visual start sequence */
89: var bool AM; /* Automatic margins */
90: var bool BS; /* Backspace works */
91: var bool CA; /* Cursor addressible */
92: var bool DA; /* Display may be retained above */
93: var bool DB; /* Display may be retained below */
94: var bool EO; /* Can erase overstrikes with ' ' */
95: var bool GT; /* Gtty indicates tabs */
96: var bool HC; /* Hard copy terminal */
97: var bool HZ; /* Hazeltine ~ braindamage */
98: var bool IN; /* Insert-null blessing */
99: var bool MI; /* can move in insert mode */
100: var bool NC; /* No Cr - \r snds \r\n then eats \n (dm2500) */
101: var bool NS; /* No scroll - linefeed at bottom won't scroll */
102: var bool OS; /* Overstrike works */
103: var bool UL; /* Underlining works even though !os */
104: var bool XB; /* Beehive (no escape key, simulate with f1) */
105: var bool XN; /* A newline gets eaten after wrap (concept) */
106: var bool XT; /* Tabs are destructive */
107: var bool XX; /* Tektronix 4025 insert line */
108: /* X? is reserved for severely nauseous glitches */
109: /* If there are enough of these we may need bit masks! */
110:
111: /*
112: * From the tty modes...
113: */
114: var bool NONL; /* Terminal can't hack linefeeds doing a CR */
115: var bool UPPERCASE; /* Ick! */
116: extern short LINES; /* Number of lines on screen */
117: extern short COLUMNS;
118: var short OCOLUMNS; /* Save COLUMNS for a hack in open mode */
119: var struct winsize winsz; /* Save window size for stopping comparisons */
120:
121: var short outcol; /* Where the cursor is */
122: var short outline;
123:
124: var short destcol; /* Where the cursor should be */
125: var short destline;
126:
127: /*
128: * There are several kinds of tty drivers to contend with. These include:
129: * (1) V6: no CBREAK, no ioctl. (Include PWB V1 here).
130: * (2) V7 research: has CBREAK, has ioctl, and has the tchars (TIOCSETC)
131: * business to change start, stop, etc. chars.
132: * (3) USG V2: Basically like V6 but RAW mode is like V7 RAW.
133: * (We treat it as V6.)
134: * (4) USG V3: equivalent to V7 but totally incompatible.
135: * (5) Berkeley: has ltchars in addition to all of V7.
136: *
137: * The following attempts to decide what we are on, and declare
138: * some variables in the appropriate format. The wierd looking one (ttymode)
139: * is the thing we pass to sTTY and family to turn "RAW" mode on or off
140: * when we go into or out of visual mode. In V7/V6 it's just the flags word
141: * to stty. In USG V3 it's the whole tty structure.
142: */
143: #ifdef USG3TTY /* USG V3 */
144: var struct termio tty; /* Use this one structure to change modes */
145: typedef struct termio ttymode; /* Mode to contain tty flags */
146:
147: #else /* All others */
148: var struct sgttyb tty; /* Always stty/gtty using this one structure */
149: typedef int ttymode; /* Mode to contain tty flags */
150: # ifdef TIOCSETC /* V7 */
151: var struct tchars ottyc, nttyc; /* For V7 character masking */
152: # endif
153: # ifdef TIOCLGET /* Berkeley */
154: var struct ltchars olttyc, nlttyc; /* More of tchars style stuff */
155: # endif
156:
157: #endif
158:
159: var ttymode normf; /* Restore tty flags to this (someday) */
160: var bool normtty; /* Have to restore normal mode from normf */
161:
162: ttymode ostart(), setty(), unixex();
163:
164: var short costCM; /* # chars to output a typical CM, with padding etc. */
165: var short costSR; /* likewise for scroll reverse */
166: var short costAL; /* likewise for insert line */
167: var short costDP; /* likewise for DOWN_PARM */
168: var short costLP; /* likewise for LEFT_PARM */
169: var short costRP; /* likewise for RIGHT_PARM */
170:
171: #ifdef VMUNIX
172: # define MAXNOMACS 128 /* max number of macros of each kind */
173: # define MAXCHARMACS 2048 /* max # of chars total in macros */
174: #else
175: # define MAXNOMACS 32 /* max number of macros of each kind */
176: # define MAXCHARMACS 512 /* max # of chars total in macros */
177: #endif
178: struct maps {
179: char *cap; /* pressing button that sends this.. */
180: char *mapto; /* .. maps to this string */
181: char *descr; /* legible description of key */
182: };
183: var struct maps arrows[MAXNOMACS]; /* macro defs - 1st 5 built in */
184: var struct maps immacs[MAXNOMACS]; /* for while in insert mode */
185: var struct maps abbrevs[MAXNOMACS]; /* for word abbreviations */
186: var int ldisc; /* line discipline for ucb tty driver */
187: var char mapspace[MAXCHARMACS];
188: var char *msnext; /* next free location in mapspace */
189: var int maphopcnt; /* check for infinite mapping loops */
190: var bool anyabbrs; /* true if abbr or unabbr has been done */
191: var char ttynbuf[20]; /* result of ttyname() */
192: var int ttymesg; /* original mode of users tty */
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