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6fbec236 MH |
1 | /* Copyright (c) 1979 Regents of the University of California */ |
2 | /* | |
3 | * Capabilities from termcap | |
4 | * | |
5 | * The description of terminals is a difficult business, and we only | |
6 | * attempt to summarize the capabilities here; for a full description | |
7 | * see the paper describing termcap. | |
8 | * | |
9 | * Capabilities from termcap are of three kinds - string valued options, | |
10 | * numeric valued options, and boolean options. The string valued options | |
11 | * are the most complicated, since they may include padding information, | |
12 | * which we describe now. | |
13 | * | |
14 | * Intelligent terminals often require padding on intelligent operations | |
15 | * at high (and sometimes even low) speed. This is specified by | |
16 | * a number before the string in the capability, and has meaning for the | |
17 | * capabilities which have a P at the front of their comment. | |
18 | * This normally is a number of milliseconds to pad the operation. | |
19 | * In the current system which has no true programmible delays, we | |
20 | * do this by sending a sequence of pad characters (normally nulls, but | |
21 | * specifiable as "pc"). In some cases, the pad is better computed | |
22 | * as some number of milliseconds times the number of affected lines | |
23 | * (to bottom of screen usually, except when terminals have insert modes | |
24 | * which will shift several lines.) This is specified as '12*' e.g. | |
25 | * before the capability to say 12 milliseconds per affected whatever | |
26 | * (currently always line). Capabilities where this makes sense say P*. | |
27 | */ | |
28 | char tspace[256]; /* Space for capability strings */ | |
29 | char *aoftspace; /* Address of tspace for relocation */ | |
30 | ||
31 | char *AL; /* P* Add new blank line */ | |
32 | char *BC; /* Back cursor */ | |
33 | char *BT; /* P Back tab */ | |
34 | char *CD; /* P* Clear to end of display */ | |
35 | char *CE; /* P Clear to end of line */ | |
36 | char *CL; /* P* Clear screen */ | |
37 | char *CM; /* P Cursor motion */ | |
d266c416 | 38 | char *xCR; /* P Carriage return */ |
6fbec236 MH |
39 | char *DC; /* P* Delete character */ |
40 | char *DL; /* P* Delete line sequence */ | |
41 | char *DM; /* Delete mode (enter) */ | |
42 | char *DO; /* Down line sequence */ | |
43 | char *ED; /* End delete mode */ | |
44 | char *EI; /* End insert mode */ | |
45 | char *F0,*F1,*F2,*F3,*F4,*F5,*F6,*F7,*F8,*F9; | |
46 | /* Strings sent by various function keys */ | |
47 | char *HO; /* Home cursor */ | |
48 | char *IC; /* P Insert character */ | |
49 | char *IM; /* Insert mode (give as ':im=:' if 'ic' */ | |
50 | char *IP; /* P* Insert pad after char ins'd using IM+IE */ | |
51 | char *KD; /* Keypad down arrow */ | |
52 | char *KE; /* Keypad don't xmit */ | |
53 | char *KH; /* Keypad home key */ | |
54 | char *KL; /* Keypad left arrow */ | |
55 | char *KR; /* Keypad right arrow */ | |
56 | char *KS; /* Keypad start xmitting */ | |
57 | char *KU; /* Keypad up arrow */ | |
58 | char *LL; /* Quick to last line, column 0 */ | |
59 | char *ND; /* Non-destructive space */ | |
d266c416 | 60 | char *xNL; /* Line feed (new line) */ |
6fbec236 MH |
61 | char PC; /* Pad character */ |
62 | char *SE; /* Standout end (may leave space) */ | |
63 | char *SF; /* P Scroll forwards */ | |
64 | char *SO; /* Stand out begin (may leave space) */ | |
65 | char *SR; /* P Scroll backwards */ | |
66 | char *TA; /* P Tab (other than ^I or with padding) */ | |
67 | char *TE; /* Terminal end sequence */ | |
68 | char *TI; /* Terminal initial sequence */ | |
69 | char *UP; /* Upline */ | |
70 | char *VB; /* Visible bell */ | |
71 | char *VE; /* Visual end sequence */ | |
72 | char *VS; /* Visual start sequence */ | |
73 | bool AM; /* Automatic margins */ | |
74 | bool BS; /* Backspace works */ | |
75 | bool CA; /* Cursor addressible */ | |
76 | bool DA; /* Display may be retained above */ | |
77 | bool DB; /* Display may be retained below */ | |
78 | bool EO; /* Can erase overstrikes with ' ' */ | |
79 | bool GT; /* Gtty indicates tabs */ | |
80 | bool HC; /* Hard copy terminal */ | |
81 | bool HZ; /* Hazeltine ~ braindamage */ | |
82 | bool IN; /* Insert-null blessing */ | |
83 | bool MI; /* can move in insert mode */ | |
84 | bool NC; /* No Cr - \r snds \r\n then eats \n (dm2500) */ | |
d266c416 | 85 | bool NS; /* No scroll - linefeed at bottom won't scroll */ |
6fbec236 MH |
86 | bool OS; /* Overstrike works */ |
87 | bool UL; /* Underlining works even though !os */ | |
d266c416 | 88 | bool XB; /* Beehive (no escape key, simulate with f1) */ |
6fbec236 MH |
89 | bool XN; /* A newline gets eaten after wrap (concept) */ |
90 | bool XT; /* Tabs are destructive */ | |
d266c416 | 91 | bool XX; /* Tektronix 4025 insert line */ |
6fbec236 MH |
92 | /* X? is reserved for severely nauseous glitches */ |
93 | /* If there are enough of these we may need bit masks! */ | |
94 | ||
95 | /* | |
96 | * From the tty modes... | |
97 | */ | |
98 | bool NONL; /* Terminal can't hack linefeeds doing a CR */ | |
99 | bool UPPERCASE; /* Ick! */ | |
100 | short LINES; /* Number of lines on screen */ | |
101 | short COLUMNS; | |
102 | short OCOLUMNS; /* Save COLUMNS for a hack in open mode */ | |
103 | ||
104 | short outcol; /* Where the cursor is */ | |
105 | short outline; | |
106 | ||
107 | short destcol; /* Where the cursor should be */ | |
108 | short destline; | |
109 | ||
d266c416 MH |
110 | /* |
111 | * There are several kinds of tty drivers to contend with. These include: | |
112 | * (1) V6: no CBREAK, no ioctl. (Include PWB V1 here). | |
113 | * (2) V7 research: has CBREAK, has ioctl, and has the tchars (TIOCSETC) | |
114 | * business to change start, stop, etc. chars. | |
115 | * (3) USG V2: Basically like V6 but RAW mode is like V7 RAW. | |
116 | * (We treat it as V6.) | |
117 | * (4) USG V3: equivalent to V7 but totally incompatible. | |
118 | * (5) Berkeley: has ltchars in addition to all of V7. | |
119 | * | |
120 | * The following attempts to decide what we are on, and declare | |
121 | * some variables in the appropriate format. The wierd looking one (ttymode) | |
122 | * is the thing we pass to sTTY and family to turn "RAW" mode on or off | |
123 | * when we go into or out of visual mode. In V7/V6 it's just the flags word | |
124 | * to stty. In USG V3 it's the whole tty structure. | |
125 | */ | |
126 | #ifdef USG3TTY /* USG V3 */ | |
127 | struct termio tty; /* Use this one structure to change modes */ | |
128 | typedef struct termio ttymode; /* Mode to contain tty flags */ | |
129 | ||
130 | #else /* All others */ | |
131 | struct sgttyb tty; /* Always stty/gtty using this one structure */ | |
132 | typedef int ttymode; /* Mode to contain tty flags */ | |
133 | # ifdef TIOCSETC /* V7 */ | |
134 | struct tchars ottyc, nttyc; /* For V7 character masking */ | |
135 | # endif | |
136 | # ifdef TIOCLGET /* Berkeley */ | |
137 | struct ltchars olttyc, nlttyc; /* More of tchars style stuff */ | |
138 | # endif | |
139 | ||
6fbec236 | 140 | #endif |
d266c416 MH |
141 | |
142 | ttymode normf; /* Restore tty flags to this (someday) */ | |
143 | bool normtty; /* Have to restore normal mode from normf */ | |
144 | ||
145 | ttymode ostart(), setty(), unixex(); | |
6fbec236 MH |
146 | |
147 | short WBOT; | |
148 | short WECHO; | |
149 | ||
150 | short costCM; | |
151 | ||
887e3e0d MH |
152 | #ifdef VMUNIX |
153 | # define MAXNOMACS 128 /* max number of macros of each kind */ | |
154 | # define MAXCHARMACS 2048 /* max # of chars total in macros */ | |
155 | #else | |
156 | # define MAXNOMACS 32 /* max number of macros of each kind */ | |
157 | # define MAXCHARMACS 512 /* max # of chars total in macros */ | |
158 | #endif | |
6fbec236 MH |
159 | struct maps { |
160 | char *cap; /* pressing button that sends this.. */ | |
161 | char *mapto; /* .. maps to this string */ | |
162 | char *descr; /* legible description of key */ | |
163 | }; | |
164 | struct maps arrows[MAXNOMACS]; /* macro defs - 1st 5 built in */ | |
887e3e0d | 165 | struct maps immacs[MAXNOMACS]; /* for while in insert mode */ |
d266c416 MH |
166 | struct maps abbrevs[MAXNOMACS]; /* for word abbreviations */ |
167 | int ldisc; /* line discipline for ucb tty driver */ | |
6fbec236 MH |
168 | char mapspace[MAXCHARMACS]; |
169 | char *msnext; /* next free location in mapspace */ | |
d266c416 MH |
170 | int maphopcnt; /* check for infinite mapping loops */ |
171 | bool anyabbrs; /* true if abbr or unabbr has been done */ | |
172 | char ttynbuf[20]; /* result of ttyname() */ | |
173 | int ttymesg; /* original mode of users tty */ |