Annotation of src/usr.bin/tmux/tty-term.c, Revision 1.11
1.11 ! nicm 1: /* $OpenBSD: tty-term.c,v 1.10 2009/10/12 13:01:18 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
1.3 nicm 21: #include <curses.h>
1.5 nicm 22: #include <fnmatch.h>
23: #include <stdlib.h>
1.1 nicm 24: #include <string.h>
25: #include <term.h>
1.5 nicm 26: #include <vis.h>
1.1 nicm 27:
28: #include "tmux.h"
29:
1.5 nicm 30: void tty_term_override(struct tty_term *, const char *);
1.1 nicm 31: char *tty_term_strip(const char *);
32:
33: struct tty_terms tty_terms = SLIST_HEAD_INITIALIZER(tty_terms);
34:
35: struct tty_term_code_entry tty_term_codes[NTTYCODE] = {
36: { TTYC_AX, TTYCODE_FLAG, "AX" },
37: { TTYC_ACSC, TTYCODE_STRING, "acsc" },
38: { TTYC_BEL, TTYCODE_STRING, "bel" },
39: { TTYC_BLINK, TTYCODE_STRING, "blink" },
40: { TTYC_BOLD, TTYCODE_STRING, "bold" },
41: { TTYC_CIVIS, TTYCODE_STRING, "civis" },
42: { TTYC_CLEAR, TTYCODE_STRING, "clear" },
43: { TTYC_CNORM, TTYCODE_STRING, "cnorm" },
44: { TTYC_COLORS, TTYCODE_NUMBER, "colors" },
45: { TTYC_CSR, TTYCODE_STRING, "csr" },
1.10 nicm 46: { TTYC_CUB, TTYCODE_STRING, "cub" },
47: { TTYC_CUB1, TTYCODE_STRING, "cub1" },
1.1 nicm 48: { TTYC_CUD, TTYCODE_STRING, "cud" },
49: { TTYC_CUD1, TTYCODE_STRING, "cud1" },
1.10 nicm 50: { TTYC_CUF, TTYCODE_STRING, "cuf" },
51: { TTYC_CUF1, TTYCODE_STRING, "cuf1" },
1.1 nicm 52: { TTYC_CUP, TTYCODE_STRING, "cup" },
1.10 nicm 53: { TTYC_CUU, TTYCODE_STRING, "cuu" },
54: { TTYC_CUU1, TTYCODE_STRING, "cuu1" },
1.1 nicm 55: { TTYC_DCH, TTYCODE_STRING, "dch" },
56: { TTYC_DCH1, TTYCODE_STRING, "dch1" },
57: { TTYC_DIM, TTYCODE_STRING, "dim" },
58: { TTYC_DL, TTYCODE_STRING, "dl" },
59: { TTYC_DL1, TTYCODE_STRING, "dl1" },
60: { TTYC_EL, TTYCODE_STRING, "el" },
61: { TTYC_EL1, TTYCODE_STRING, "el1" },
62: { TTYC_ENACS, TTYCODE_STRING, "enacs" },
1.10 nicm 63: { TTYC_HOME, TTYCODE_STRING, "home" },
64: { TTYC_HPA, TTYCODE_STRING, "hpa" },
1.1 nicm 65: { TTYC_ICH, TTYCODE_STRING, "ich" },
66: { TTYC_ICH1, TTYCODE_STRING, "ich1" },
67: { TTYC_IL, TTYCODE_STRING, "il" },
68: { TTYC_IL1, TTYCODE_STRING, "il1" },
69: { TTYC_INVIS, TTYCODE_STRING, "invis" },
70: { TTYC_IS1, TTYCODE_STRING, "is1" },
71: { TTYC_IS2, TTYCODE_STRING, "is2" },
72: { TTYC_IS3, TTYCODE_STRING, "is3" },
73: { TTYC_KCBT, TTYCODE_STRING, "kcbt" },
74: { TTYC_KCUB1, TTYCODE_STRING, "kcub1" },
75: { TTYC_KCUD1, TTYCODE_STRING, "kcud1" },
76: { TTYC_KCUF1, TTYCODE_STRING, "kcuf1" },
77: { TTYC_KCUU1, TTYCODE_STRING, "kcuu1" },
78: { TTYC_KDCH1, TTYCODE_STRING, "kdch1" },
79: { TTYC_KEND, TTYCODE_STRING, "kend" },
80: { TTYC_KF1, TTYCODE_STRING, "kf1" },
81: { TTYC_KF10, TTYCODE_STRING, "kf10" },
82: { TTYC_KF11, TTYCODE_STRING, "kf11" },
83: { TTYC_KF12, TTYCODE_STRING, "kf12" },
84: { TTYC_KF13, TTYCODE_STRING, "kf13" },
85: { TTYC_KF14, TTYCODE_STRING, "kf14" },
86: { TTYC_KF15, TTYCODE_STRING, "kf15" },
87: { TTYC_KF16, TTYCODE_STRING, "kf16" },
88: { TTYC_KF17, TTYCODE_STRING, "kf17" },
89: { TTYC_KF18, TTYCODE_STRING, "kf18" },
90: { TTYC_KF19, TTYCODE_STRING, "kf19" },
1.10 nicm 91: { TTYC_KF2, TTYCODE_STRING, "kf2" },
1.1 nicm 92: { TTYC_KF20, TTYCODE_STRING, "kf20" },
93: { TTYC_KF3, TTYCODE_STRING, "kf3" },
94: { TTYC_KF4, TTYCODE_STRING, "kf4" },
95: { TTYC_KF5, TTYCODE_STRING, "kf5" },
96: { TTYC_KF6, TTYCODE_STRING, "kf6" },
97: { TTYC_KF7, TTYCODE_STRING, "kf7" },
98: { TTYC_KF8, TTYCODE_STRING, "kf8" },
99: { TTYC_KF9, TTYCODE_STRING, "kf9" },
100: { TTYC_KHOME, TTYCODE_STRING, "khome" },
101: { TTYC_KICH1, TTYCODE_STRING, "kich1" },
102: { TTYC_KMOUS, TTYCODE_STRING, "kmous" },
103: { TTYC_KNP, TTYCODE_STRING, "knp" },
104: { TTYC_KPP, TTYCODE_STRING, "kpp" },
105: { TTYC_OP, TTYCODE_STRING, "op" },
106: { TTYC_REV, TTYCODE_STRING, "rev" },
107: { TTYC_RI, TTYCODE_STRING, "ri" },
108: { TTYC_RMACS, TTYCODE_STRING, "rmacs" },
109: { TTYC_RMCUP, TTYCODE_STRING, "rmcup" },
110: { TTYC_RMIR, TTYCODE_STRING, "rmir" },
111: { TTYC_RMKX, TTYCODE_STRING, "rmkx" },
112: { TTYC_SETAB, TTYCODE_STRING, "setab" },
113: { TTYC_SETAF, TTYCODE_STRING, "setaf" },
114: { TTYC_SGR0, TTYCODE_STRING, "sgr0" },
115: { TTYC_SMACS, TTYCODE_STRING, "smacs" },
116: { TTYC_SMCUP, TTYCODE_STRING, "smcup" },
117: { TTYC_SMIR, TTYCODE_STRING, "smir" },
118: { TTYC_SMKX, TTYCODE_STRING, "smkx" },
119: { TTYC_SMSO, TTYCODE_STRING, "smso" },
120: { TTYC_SMUL, TTYCODE_STRING, "smul" },
1.10 nicm 121: { TTYC_VPA, TTYCODE_STRING, "vpa" },
1.1 nicm 122: { TTYC_XENL, TTYCODE_FLAG, "xenl" },
123: };
124:
125: char *
126: tty_term_strip(const char *s)
127: {
128: const char *ptr;
129: static char buf[BUFSIZ];
130: size_t len;
131:
132: /* Ignore strings with no padding. */
133: if (strchr(s, '$') == NULL)
134: return (xstrdup(s));
135:
136: len = 0;
137: for (ptr = s; *ptr != '\0'; ptr++) {
138: if (*ptr == '$' && *(ptr + 1) == '<') {
139: while (*ptr != '\0' && *ptr != '>')
140: ptr++;
141: if (*ptr == '>')
142: ptr++;
143: }
144:
145: buf[len++] = *ptr;
146: if (len == (sizeof buf) - 1)
147: break;
148: }
149: buf[len] = '\0';
150:
151: return (xstrdup(buf));
152: }
153:
154: void
1.5 nicm 155: tty_term_override(struct tty_term *term, const char *overrides)
1.1 nicm 156: {
1.5 nicm 157: struct tty_term_code_entry *ent;
158: struct tty_code *code;
159: char *termnext, *termstr, *entnext, *entstr;
160: char *s, *ptr, *val;
161: const char *errstr;
162: u_int i;
163: int n, removeflag;
164:
165: s = xstrdup(overrides);
166:
167: termnext = s;
168: while ((termstr = strsep(&termnext, ",")) != NULL) {
169: entnext = termstr;
170:
171: entstr = strsep(&entnext, ":");
172: if (entstr == NULL || entnext == NULL)
173: continue;
174: if (fnmatch(entstr, term->name, 0) != 0)
175: continue;
176: while ((entstr = strsep(&entnext, ":")) != NULL) {
177: if (*entstr == '\0')
178: continue;
179:
180: val = NULL;
181: removeflag = 0;
182: if ((ptr = strchr(entstr, '=')) != NULL) {
183: *ptr++ = '\0';
184: val = xstrdup(ptr);
1.9 nicm 185: if (strunvis(val, ptr) == -1) {
1.5 nicm 186: xfree(val);
187: val = xstrdup(ptr);
188: }
189: } else if (entstr[strlen(entstr) - 1] == '@') {
190: entstr[strlen(entstr) - 1] = '\0';
191: removeflag = 1;
192: }
193:
194: for (i = 0; i < NTTYCODE; i++) {
195: ent = &tty_term_codes[i];
196: if (strcmp(entstr, ent->name) != 0)
197: continue;
198: code = &term->codes[ent->code];
199:
200: if (removeflag) {
201: code->type = TTYCODE_NONE;
202: continue;
203: }
204: switch (ent->type) {
205: case TTYCODE_NONE:
206: break;
207: case TTYCODE_STRING:
1.6 nicm 208: if (code->type == TTYCODE_STRING)
209: xfree(code->value.string);
1.5 nicm 210: code->value.string = xstrdup(val);
211: code->type = ent->type;
212: break;
213: case TTYCODE_NUMBER:
214: n = strtonum(val, 0, INT_MAX, &errstr);
215: if (errstr != NULL)
216: break;
217: code->value.number = n;
218: code->type = ent->type;
219: break;
220: case TTYCODE_FLAG:
221: code->value.flag = 1;
222: code->type = ent->type;
223: break;
224: }
225: }
226:
227: if (val != NULL)
228: xfree(val);
1.1 nicm 229: }
230: }
231:
1.5 nicm 232: xfree(s);
1.1 nicm 233: }
234:
235: struct tty_term *
1.5 nicm 236: tty_term_find(char *name, int fd, const char *overrides, char **cause)
1.1 nicm 237: {
238: struct tty_term *term;
239: struct tty_term_code_entry *ent;
240: struct tty_code *code;
241: u_int i;
242: int n, error;
243: char *s;
244:
245: SLIST_FOREACH(term, &tty_terms, entry) {
246: if (strcmp(term->name, name) == 0) {
247: term->references++;
248: return (term);
249: }
250: }
251:
252: log_debug("new term: %s", name);
253: term = xmalloc(sizeof *term);
254: term->name = xstrdup(name);
255: term->references = 1;
256: term->flags = 0;
1.7 nicm 257: memset(&term->codes, 0, sizeof term->codes);
1.1 nicm 258: SLIST_INSERT_HEAD(&tty_terms, term, entry);
259:
1.3 nicm 260: /* Set up curses terminal. */
1.1 nicm 261: if (setupterm(name, fd, &error) != OK) {
262: switch (error) {
1.4 matthieu 263: case 1:
264: xasprintf(cause, "can't use hardcopy terminal: %s", name);
265: break;
1.1 nicm 266: case 0:
1.4 matthieu 267: xasprintf(cause, "missing or unsuitable terminal: %s", name);
1.1 nicm 268: break;
1.4 matthieu 269: case -1:
1.1 nicm 270: xasprintf(cause, "can't find terminfo database");
271: break;
272: default:
273: xasprintf(cause, "unknown error");
274: break;
275: }
276: goto error;
277: }
278:
279: /* Fill in codes. */
280: for (i = 0; i < NTTYCODE; i++) {
281: ent = &tty_term_codes[i];
282:
283: code = &term->codes[ent->code];
284: code->type = TTYCODE_NONE;
285: switch (ent->type) {
286: case TTYCODE_NONE:
287: break;
288: case TTYCODE_STRING:
289: s = tigetstr((char *) ent->name);
290: if (s == NULL || s == (char *) -1)
291: break;
292: code->type = TTYCODE_STRING;
293: code->value.string = tty_term_strip(s);
294: break;
295: case TTYCODE_NUMBER:
296: n = tigetnum((char *) ent->name);
297: if (n == -1 || n == -2)
298: break;
299: code->type = TTYCODE_NUMBER;
300: code->value.number = n;
301: break;
302: case TTYCODE_FLAG:
303: n = tigetflag((char *) ent->name);
304: if (n == -1)
305: break;
306: code->type = TTYCODE_FLAG;
307: code->value.number = n;
308: break;
309: }
310: }
1.5 nicm 311: tty_term_override(term, overrides);
1.1 nicm 312:
1.3 nicm 313: /* Delete curses data. */
1.1 nicm 314: del_curterm(cur_term);
315:
316: /* These are always required. */
317: if (!tty_term_has(term, TTYC_CLEAR)) {
318: xasprintf(cause, "terminal does not support clear");
319: goto error;
320: }
321: if (!tty_term_has(term, TTYC_RI)) {
322: xasprintf(cause, "terminal does not support ri");
323: goto error;
324: }
325: if (!tty_term_has(term, TTYC_CUP)) {
326: xasprintf(cause, "terminal does not support cup");
327: goto error;
328: }
329:
330: /* These can be emulated so one of the two is required. */
331: if (!tty_term_has(term, TTYC_CUD1) && !tty_term_has(term, TTYC_CUD)) {
332: xasprintf(cause, "terminal does not support cud1 or cud");
333: goto error;
334: }
335: if (!tty_term_has(term, TTYC_IL1) && !tty_term_has(term, TTYC_IL)) {
336: xasprintf(cause, "terminal does not support il1 or il");
337: goto error;
338: }
339: if (!tty_term_has(term, TTYC_DL1) && !tty_term_has(term, TTYC_DL)) {
340: xasprintf(cause, "terminal does not support dl1 or dl");
341: goto error;
342: }
343: if (!tty_term_has(term, TTYC_ICH1) &&
344: !tty_term_has(term, TTYC_ICH) && (!tty_term_has(term, TTYC_SMIR) ||
345: !tty_term_has(term, TTYC_RMIR))) {
346: xasprintf(cause,
347: "terminal does not support ich1 or ich or smir and rmir");
348: goto error;
349: }
350:
351: /*
352: * Figure out if terminal support default colours. AX is a screen
353: * extension which indicates this. Also check if op (orig_pair) uses
354: * the default colours - if it does, this is a good indication the
355: * terminal supports them.
356: */
357: if (tty_term_flag(term, TTYC_AX))
358: term->flags |= TERM_HASDEFAULTS;
359: if (strcmp(tty_term_string(term, TTYC_OP), "\033[39;49m") == 0)
360: term->flags |= TERM_HASDEFAULTS;
361:
1.11 ! nicm 362: /* Figure out if we have 256 or 88 colours. */
1.1 nicm 363: if (tty_term_number(term, TTYC_COLORS) == 256)
364: term->flags |= TERM_256COLOURS;
365: if (tty_term_number(term, TTYC_COLORS) == 88)
366: term->flags |= TERM_88COLOURS;
367:
368: /*
369: * Terminals without xenl (eat newline glitch) wrap at at $COLUMNS - 1
370: * rather than $COLUMNS (the cursor can never be beyond $COLUMNS - 1).
371: *
372: * This is irritating, most notably because it is impossible to write
373: * to the very bottom-right of the screen without scrolling.
374: *
375: * Flag the terminal here and apply some workarounds in other places to
376: * do the best possible.
377: */
378: if (!tty_term_flag(term, TTYC_XENL))
379: term->flags |= TERM_EARLYWRAP;
380:
381: return (term);
382:
383: error:
384: tty_term_free(term);
385: return (NULL);
386: }
387:
388: void
389: tty_term_free(struct tty_term *term)
390: {
391: u_int i;
392:
393: if (--term->references != 0)
394: return;
395:
396: SLIST_REMOVE(&tty_terms, term, tty_term, entry);
397:
398: for (i = 0; i < NTTYCODE; i++) {
399: if (term->codes[i].type == TTYCODE_STRING)
400: xfree(term->codes[i].value.string);
401: }
402: xfree(term->name);
403: xfree(term);
404: }
405:
406: int
407: tty_term_has(struct tty_term *term, enum tty_code_code code)
408: {
409: return (term->codes[code].type != TTYCODE_NONE);
410: }
411:
412: const char *
413: tty_term_string(struct tty_term *term, enum tty_code_code code)
414: {
415: if (!tty_term_has(term, code))
416: return ("");
417: if (term->codes[code].type != TTYCODE_STRING)
418: log_fatalx("not a string: %d", code);
419: return (term->codes[code].value.string);
420: }
421:
1.3 nicm 422: /* No vtparm. Fucking curses. */
1.1 nicm 423: const char *
424: tty_term_string1(struct tty_term *term, enum tty_code_code code, int a)
425: {
426: return (tparm((char *) tty_term_string(term, code), a));
427: }
428:
429: const char *
430: tty_term_string2(struct tty_term *term, enum tty_code_code code, int a, int b)
431: {
432: return (tparm((char *) tty_term_string(term, code), a, b));
433: }
434:
435: int
436: tty_term_number(struct tty_term *term, enum tty_code_code code)
437: {
438: if (!tty_term_has(term, code))
439: return (0);
440: if (term->codes[code].type != TTYCODE_NUMBER)
441: log_fatalx("not a number: %d", code);
442: return (term->codes[code].value.number);
443: }
444:
445: int
446: tty_term_flag(struct tty_term *term, enum tty_code_code code)
447: {
448: if (!tty_term_has(term, code))
449: return (0);
450: if (term->codes[code].type != TTYCODE_FLAG)
451: log_fatalx("not a flag: %d", code);
452: return (term->codes[code].value.flag);
453: }
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