Commit | Line | Data |
---|---|---|
80cfacb7 KB |
1 | /*- |
2 | * Copyright (c) 1991 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * %sccs.include.redist.c% | |
6 | */ | |
7 | ||
8 | #ifndef lint | |
1a3a6d35 | 9 | static char sccsid[] = "@(#)set.c 5.2 (Berkeley) %G%"; |
80cfacb7 KB |
10 | #endif /* not lint */ |
11 | ||
12 | #include <termios.h> | |
13 | #include <unistd.h> | |
14 | #include <stdio.h> | |
15 | #include "extern.h" | |
16 | ||
17 | #define CHK(val, dft) (val <= 0 ? dft : val) | |
18 | ||
19 | int set_tabs __P((void)); | |
20 | ||
21 | /* | |
22 | * Reset the terminal mode bits to a sensible state. Very useful after | |
23 | * a child program dies in raw mode. | |
24 | */ | |
25 | void | |
26 | reset_mode() | |
27 | { | |
28 | tcgetattr(STDERR_FILENO, &mode); | |
29 | ||
30 | #if defined(VDISCARD) && defined(CDISCARD) | |
31 | mode.c_cc[VDISCARD] = CHK(mode.c_cc[VDISCARD], CDISCARD); | |
32 | #endif | |
33 | mode.c_cc[VEOF] = CHK(mode.c_cc[VEOF], CEOF); | |
34 | mode.c_cc[VERASE] = CHK(mode.c_cc[VERASE], CERASE); | |
35 | #if defined(VFLUSH) && defined(CFLUSH) | |
36 | mode.c_cc[VFLUSH] = CHK(mode.c_cc[VFLUSH], CFLUSH); | |
37 | #endif | |
38 | mode.c_cc[VINTR] = CHK(mode.c_cc[VINTR], CINTR); | |
39 | mode.c_cc[VKILL] = CHK(mode.c_cc[VKILL], CKILL); | |
40 | #if defined(VLNEXT) && defined(CLNEXT) | |
41 | mode.c_cc[VLNEXT] = CHK(mode.c_cc[VLNEXT], CLNEXT); | |
42 | #endif | |
43 | mode.c_cc[VQUIT] = CHK(mode.c_cc[VQUIT], CQUIT); | |
44 | #if defined(VREPRINT) && defined(CRPRNT) | |
45 | mode.c_cc[VREPRINT] = CHK(mode.c_cc[VREPRINT], CRPRNT); | |
46 | #endif | |
47 | mode.c_cc[VSTART] = CHK(mode.c_cc[VSTART], CSTART); | |
48 | mode.c_cc[VSTOP] = CHK(mode.c_cc[VSTOP], CSTOP); | |
49 | mode.c_cc[VSUSP] = CHK(mode.c_cc[VSUSP], CSUSP); | |
50 | #if defined(VWERASE) && defined(CWERASE) | |
51 | mode.c_cc[VWERASE] = CHK(mode.c_cc[VWERASE], CWERASE); | |
52 | #endif | |
53 | ||
54 | mode.c_iflag &= ~(IGNBRK | PARMRK | INPCK | ISTRIP | INLCR | IGNCR | |
55 | #ifdef IUCLC | |
56 | | IUCLC | |
57 | #endif | |
58 | #ifdef IXANY | |
59 | | IXANY | |
60 | #endif | |
61 | | IXOFF); | |
62 | ||
63 | mode.c_iflag |= (BRKINT | IGNPAR | ICRNL | IXON | |
64 | #ifdef IMAXBEL | |
65 | | IMAXBEL | |
66 | #endif | |
67 | ); | |
68 | ||
69 | mode.c_oflag &= ~(0 | |
70 | #ifdef OLCUC | |
71 | | OLCUC | |
72 | #endif | |
73 | #ifdef OCRNL | |
74 | | OCRNL | |
75 | #endif | |
76 | #ifdef ONOCR | |
77 | | ONOCR | |
78 | #endif | |
79 | #ifdef ONLRET | |
80 | | ONLRET | |
81 | #endif | |
82 | #ifdef OFILL | |
83 | | OFILL | |
84 | #endif | |
85 | #ifdef OFDEL | |
86 | | OFDEL | |
87 | #endif | |
88 | #ifdef NLDLY | |
89 | | NLDLY | CRDLY | TABDLY | BSDLY | VTDLY | FFDLY | |
90 | #endif | |
91 | ); | |
92 | ||
93 | mode.c_oflag |= (OPOST | |
94 | #ifdef ONLCR | |
95 | | ONLCR | |
96 | #endif | |
97 | ); | |
98 | ||
99 | mode.c_cflag &= ~(CSIZE | CSTOPB | PARENB | PARODD | CLOCAL); | |
100 | mode.c_cflag |= (CS8 | CREAD); | |
101 | mode.c_lflag &= ~(ECHONL | NOFLSH | TOSTOP | |
102 | #ifdef ECHOPTR | |
103 | | ECHOPRT | |
104 | #endif | |
105 | #ifdef XCASE | |
106 | | XCASE | |
107 | #endif | |
108 | ); | |
109 | ||
110 | mode.c_lflag |= (ISIG | ICANON | ECHO | ECHOE | ECHOK | |
111 | #ifdef ECHOCTL | |
112 | | ECHOCTL | |
113 | #endif | |
114 | #ifdef ECHOKE | |
115 | | ECHOKE | |
116 | #endif | |
117 | ); | |
118 | ||
119 | tcsetattr(STDERR_FILENO, TCSADRAIN, &mode); | |
120 | } | |
121 | ||
122 | /* | |
123 | * Determine the erase, interrupt, and kill characters from the termcap | |
124 | * entry and command line and update their values in 'mode'. | |
125 | */ | |
126 | void | |
127 | set_control_chars() | |
128 | { | |
129 | char *bp, *p, bs_char, buf[1024]; | |
130 | ||
131 | bp = buf; | |
132 | p = tgetstr("kb", &bp); | |
133 | if (p == NULL || p[1] != '\0') | |
134 | p = tgetstr("bc", &bp); | |
135 | if (p != NULL && p[1] == '\0') | |
136 | bs_char = p[0]; | |
137 | else if (tgetflag("bs")) | |
138 | bs_char = CTRL('h'); | |
139 | else | |
140 | bs_char = 0; | |
141 | ||
142 | if (erasechar == 0 && !tgetflag("os") && mode.c_cc[VERASE] == CERASE) { | |
143 | if (tgetflag("bs") || bs_char != 0) | |
144 | erasechar = -1; | |
145 | } | |
146 | if (erasechar < 0) | |
147 | erasechar = (bs_char != 0) ? bs_char : CTRL('h'); | |
1a3a6d35 | 148 | |
80cfacb7 KB |
149 | if (mode.c_cc[VERASE] == 0 || erasechar != 0) |
150 | mode.c_cc[VERASE] = erasechar ? erasechar : CERASE; | |
1a3a6d35 | 151 | |
80cfacb7 KB |
152 | if (mode.c_cc[VINTR] == 0 || intrchar != 0) |
153 | mode.c_cc[VINTR] = intrchar ? intrchar : CINTR; | |
1a3a6d35 | 154 | |
80cfacb7 KB |
155 | if (mode.c_cc[VKILL] == 0 || killchar != 0) |
156 | mode.c_cc[VKILL] = killchar ? killchar : CKILL; | |
157 | } | |
158 | ||
159 | /* | |
160 | * Set up various conversions in 'mode', including parity, tabs, returns, | |
161 | * echo, and case, according to the termcap entry. If the program we're | |
162 | * running was named with a leading upper-case character, map external | |
163 | * uppercase to internal lowercase. | |
164 | */ | |
165 | void | |
166 | set_conversions(usingupper) | |
167 | int usingupper; | |
168 | { | |
169 | if (tgetflag("UC") || usingupper) { | |
170 | #ifdef IUCLC | |
171 | mode.c_iflag |= IUCLC; | |
172 | mode.c_oflag |= OLCUC; | |
173 | #endif | |
174 | } else if (tgetflag("LC")) { | |
175 | #ifdef IUCLC | |
176 | mode.c_iflag &= ~IUCLC; | |
177 | mode.c_oflag &= ~OLCUC; | |
178 | #endif | |
179 | } | |
180 | mode.c_iflag &= ~(PARMRK | INPCK); | |
181 | mode.c_lflag |= ICANON; | |
182 | if (tgetflag("EP")) { | |
183 | mode.c_cflag |= PARENB; | |
184 | mode.c_cflag &= ~PARODD; | |
185 | } | |
186 | if (tgetflag("OP")) { | |
187 | mode.c_cflag |= PARENB; | |
188 | mode.c_cflag |= PARODD; | |
189 | } | |
1a3a6d35 | 190 | |
80cfacb7 KB |
191 | #ifdef ONLCR |
192 | mode.c_oflag |= ONLCR; | |
193 | #endif | |
194 | mode.c_iflag |= ICRNL; | |
195 | mode.c_lflag |= ECHO; | |
196 | mode.c_oflag |= OXTABS; | |
197 | if (tgetflag("NL")) { /* Newline, not linefeed. */ | |
198 | #ifdef ONLCR | |
199 | mode.c_oflag &= ~ONLCR; | |
200 | #endif | |
201 | mode.c_iflag &= ~ICRNL; | |
202 | } | |
203 | if (tgetflag("HD")) /* Half duplex. */ | |
204 | mode.c_lflag &= ~ECHO; | |
205 | if (tgetflag("pt")) /* Print tabs. */ | |
206 | mode.c_oflag &= ~OXTABS; | |
207 | mode.c_lflag |= (ECHOE | ECHOK); | |
208 | } | |
209 | ||
210 | /* Output startup string. */ | |
211 | void | |
212 | set_init() | |
213 | { | |
214 | char *bp, buf[1024]; | |
215 | int settle; | |
216 | ||
217 | bp = buf; | |
218 | if (tgetstr("pc", &bp) != 0) /* Get/set pad character. */ | |
219 | PC = buf[0]; | |
220 | ||
221 | #ifdef TAB3 | |
222 | if (oldmode.c_oflag & (TAB3 | ONLCR | OCRNL | ONLRET)) { | |
223 | oldmode.c_oflag &= (TAB3 | ONLCR | OCRNL | ONLRET); | |
224 | tcsetattr(STDERR_FILENO, TCSADRAIN, &oldmode); | |
225 | } | |
226 | #endif | |
227 | settle = set_tabs(); | |
228 | ||
229 | if (isreset) { | |
230 | if (tgetstr("rs", &bp) != 0 || tgetstr("is", &bp) != 0) { | |
231 | tputs(buf, 0, outc); | |
232 | settle = 1; | |
233 | } | |
234 | if (tgetstr("rf", &bp) != 0 || tgetstr("if", &bp) != 0) { | |
235 | cat(buf); | |
236 | settle = 1; | |
237 | } | |
238 | } | |
1a3a6d35 | 239 | |
80cfacb7 KB |
240 | if (settle) { |
241 | (void)putc('\r', stderr); | |
242 | (void)fflush(stderr); | |
243 | (void)sleep(1); /* Settle the terminal. */ | |
244 | } | |
245 | } | |
246 | ||
247 | /* | |
248 | * Set the hardware tabs on the terminal, using the ct (clear all tabs), | |
249 | * st (set one tab) and ch (horizontal cursor addressing) capabilities. | |
250 | * This is done before if and is, so they can patch in case we blow this. | |
251 | * Return nonzero if we set any tab stops, zero if not. | |
252 | */ | |
253 | int | |
254 | set_tabs() | |
255 | { | |
256 | int c; | |
257 | char *capsp, *clear_tabs; | |
258 | char *set_column, *set_pos, *set_tab, *tg_out; | |
259 | char caps[1024]; | |
260 | ||
261 | capsp = caps; | |
262 | set_tab = tgetstr("st", &capsp); | |
263 | ||
264 | if (set_tab && (clear_tabs = tgetstr("ct", &capsp))) { | |
265 | (void)putc('\r', stderr); /* Force to left margin. */ | |
266 | tputs(clear_tabs, 0, outc); | |
267 | } | |
268 | ||
269 | set_column = tgetstr("ch", &capsp); | |
270 | set_pos = set_column ? NULL : tgetstr("cm", &capsp); | |
271 | ||
272 | if (set_tab) { | |
273 | for (c = 8; c < columns; c += 8) { | |
274 | /* | |
275 | * Get to the right column. "OOPS" is returned by | |
276 | * tgoto() if it can't do the job. (*snarl*) | |
277 | */ | |
278 | tg_out = "OOPS"; | |
279 | if (set_column) | |
280 | tg_out = tgoto(set_column, 0, c); | |
281 | if (*tg_out == 'O' && set_pos) | |
282 | tg_out = tgoto(set_pos, c, lines - 1); | |
283 | if (*tg_out != 'O') | |
284 | tputs(tg_out, 1, outc); | |
285 | else | |
286 | (void)fprintf(stderr, "%s", " "); | |
287 | /* Set the tab. */ | |
288 | tputs(set_tab, 0, outc); | |
289 | } | |
290 | putc('\r', stderr); | |
291 | return (1); | |
292 | } | |
293 | return (0); | |
294 | } |