Annotation of src/usr.bin/tmux/tty-term.c, Revision 1.8
1.8 ! nicm 1: /* $OpenBSD: tty-term.c,v 1.7 2009/08/05 19:05:02 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" },
46: { TTYC_CUD, TTYCODE_STRING, "cud" },
47: { TTYC_CUD1, TTYCODE_STRING, "cud1" },
48: { TTYC_CUP, TTYCODE_STRING, "cup" },
49: { TTYC_DCH, TTYCODE_STRING, "dch" },
50: { TTYC_DCH1, TTYCODE_STRING, "dch1" },
51: { TTYC_DIM, TTYCODE_STRING, "dim" },
52: { TTYC_DL, TTYCODE_STRING, "dl" },
53: { TTYC_DL1, TTYCODE_STRING, "dl1" },
54: { TTYC_EL, TTYCODE_STRING, "el" },
55: { TTYC_EL1, TTYCODE_STRING, "el1" },
56: { TTYC_ENACS, TTYCODE_STRING, "enacs" },
57: { TTYC_ICH, TTYCODE_STRING, "ich" },
58: { TTYC_ICH1, TTYCODE_STRING, "ich1" },
59: { TTYC_IL, TTYCODE_STRING, "il" },
60: { TTYC_IL1, TTYCODE_STRING, "il1" },
61: { TTYC_INVIS, TTYCODE_STRING, "invis" },
62: { TTYC_IS1, TTYCODE_STRING, "is1" },
63: { TTYC_IS2, TTYCODE_STRING, "is2" },
64: { TTYC_IS3, TTYCODE_STRING, "is3" },
65: { TTYC_KCBT, TTYCODE_STRING, "kcbt" },
66: { TTYC_KCUB1, TTYCODE_STRING, "kcub1" },
67: { TTYC_KCUD1, TTYCODE_STRING, "kcud1" },
68: { TTYC_KCUF1, TTYCODE_STRING, "kcuf1" },
69: { TTYC_KCUU1, TTYCODE_STRING, "kcuu1" },
70: { TTYC_KDCH1, TTYCODE_STRING, "kdch1" },
71: { TTYC_KEND, TTYCODE_STRING, "kend" },
72: { TTYC_KF1, TTYCODE_STRING, "kf1" },
73: { TTYC_KF10, TTYCODE_STRING, "kf10" },
74: { TTYC_KF11, TTYCODE_STRING, "kf11" },
75: { TTYC_KF12, TTYCODE_STRING, "kf12" },
76: { TTYC_KF13, TTYCODE_STRING, "kf13" },
77: { TTYC_KF14, TTYCODE_STRING, "kf14" },
78: { TTYC_KF15, TTYCODE_STRING, "kf15" },
79: { TTYC_KF16, TTYCODE_STRING, "kf16" },
80: { TTYC_KF17, TTYCODE_STRING, "kf17" },
81: { TTYC_KF18, TTYCODE_STRING, "kf18" },
82: { TTYC_KF19, TTYCODE_STRING, "kf19" },
83: { TTYC_KF20, TTYCODE_STRING, "kf20" },
84: { TTYC_KF2, TTYCODE_STRING, "kf2" },
85: { TTYC_KF3, TTYCODE_STRING, "kf3" },
86: { TTYC_KF4, TTYCODE_STRING, "kf4" },
87: { TTYC_KF5, TTYCODE_STRING, "kf5" },
88: { TTYC_KF6, TTYCODE_STRING, "kf6" },
89: { TTYC_KF7, TTYCODE_STRING, "kf7" },
90: { TTYC_KF8, TTYCODE_STRING, "kf8" },
91: { TTYC_KF9, TTYCODE_STRING, "kf9" },
92: { TTYC_KHOME, TTYCODE_STRING, "khome" },
93: { TTYC_KICH1, TTYCODE_STRING, "kich1" },
94: { TTYC_KMOUS, TTYCODE_STRING, "kmous" },
95: { TTYC_KNP, TTYCODE_STRING, "knp" },
96: { TTYC_KPP, TTYCODE_STRING, "kpp" },
97: { TTYC_OP, TTYCODE_STRING, "op" },
98: { TTYC_REV, TTYCODE_STRING, "rev" },
99: { TTYC_RI, TTYCODE_STRING, "ri" },
100: { TTYC_RMACS, TTYCODE_STRING, "rmacs" },
101: { TTYC_RMCUP, TTYCODE_STRING, "rmcup" },
102: { TTYC_RMIR, TTYCODE_STRING, "rmir" },
103: { TTYC_RMKX, TTYCODE_STRING, "rmkx" },
104: { TTYC_SETAB, TTYCODE_STRING, "setab" },
105: { TTYC_SETAF, TTYCODE_STRING, "setaf" },
106: { TTYC_SGR0, TTYCODE_STRING, "sgr0" },
107: { TTYC_SMACS, TTYCODE_STRING, "smacs" },
108: { TTYC_SMCUP, TTYCODE_STRING, "smcup" },
109: { TTYC_SMIR, TTYCODE_STRING, "smir" },
110: { TTYC_SMKX, TTYCODE_STRING, "smkx" },
111: { TTYC_SMSO, TTYCODE_STRING, "smso" },
112: { TTYC_SMUL, TTYCODE_STRING, "smul" },
113: { TTYC_XENL, TTYCODE_FLAG, "xenl" },
114: };
115:
116: char *
117: tty_term_strip(const char *s)
118: {
119: const char *ptr;
120: static char buf[BUFSIZ];
121: size_t len;
122:
123: /* Ignore strings with no padding. */
124: if (strchr(s, '$') == NULL)
125: return (xstrdup(s));
126:
127: len = 0;
128: for (ptr = s; *ptr != '\0'; ptr++) {
129: if (*ptr == '$' && *(ptr + 1) == '<') {
130: while (*ptr != '\0' && *ptr != '>')
131: ptr++;
132: if (*ptr == '>')
133: ptr++;
134: }
135:
136: buf[len++] = *ptr;
137: if (len == (sizeof buf) - 1)
138: break;
139: }
140: buf[len] = '\0';
141:
142: return (xstrdup(buf));
143: }
144:
145: void
1.5 nicm 146: tty_term_override(struct tty_term *term, const char *overrides)
1.1 nicm 147: {
1.5 nicm 148: struct tty_term_code_entry *ent;
149: struct tty_code *code;
150: char *termnext, *termstr, *entnext, *entstr;
151: char *s, *ptr, *val;
152: const char *errstr;
153: u_int i;
154: int n, removeflag;
155:
156: s = xstrdup(overrides);
157:
158: termnext = s;
159: while ((termstr = strsep(&termnext, ",")) != NULL) {
160: entnext = termstr;
161:
162: entstr = strsep(&entnext, ":");
163: if (entstr == NULL || entnext == NULL)
164: continue;
165: if (fnmatch(entstr, term->name, 0) != 0)
166: continue;
167: while ((entstr = strsep(&entnext, ":")) != NULL) {
168: if (*entstr == '\0')
169: continue;
170:
171: val = NULL;
172: removeflag = 0;
173: if ((ptr = strchr(entstr, '=')) != NULL) {
174: *ptr++ = '\0';
175: val = xstrdup(ptr);
176: if (strunvis(val, ptr) == NULL) {
177: xfree(val);
178: val = xstrdup(ptr);
179: }
180: } else if (entstr[strlen(entstr) - 1] == '@') {
181: entstr[strlen(entstr) - 1] = '\0';
182: removeflag = 1;
183: }
184:
185: for (i = 0; i < NTTYCODE; i++) {
186: ent = &tty_term_codes[i];
187: if (strcmp(entstr, ent->name) != 0)
188: continue;
189: code = &term->codes[ent->code];
190:
191: if (removeflag) {
192: code->type = TTYCODE_NONE;
193: continue;
194: }
195: switch (ent->type) {
196: case TTYCODE_NONE:
197: break;
198: case TTYCODE_STRING:
1.6 nicm 199: if (code->type == TTYCODE_STRING)
200: xfree(code->value.string);
1.5 nicm 201: code->value.string = xstrdup(val);
202: code->type = ent->type;
203: break;
204: case TTYCODE_NUMBER:
205: n = strtonum(val, 0, INT_MAX, &errstr);
206: if (errstr != NULL)
207: break;
208: code->value.number = n;
209: code->type = ent->type;
210: break;
211: case TTYCODE_FLAG:
212: code->value.flag = 1;
213: code->type = ent->type;
214: break;
215: }
216: }
217:
218: if (val != NULL)
219: xfree(val);
1.1 nicm 220: }
221: }
222:
1.5 nicm 223: xfree(s);
1.1 nicm 224: }
225:
226: struct tty_term *
1.5 nicm 227: tty_term_find(char *name, int fd, const char *overrides, char **cause)
1.1 nicm 228: {
229: struct tty_term *term;
230: struct tty_term_code_entry *ent;
231: struct tty_code *code;
232: u_int i;
233: int n, error;
234: char *s;
235:
236: SLIST_FOREACH(term, &tty_terms, entry) {
237: if (strcmp(term->name, name) == 0) {
238: term->references++;
239: return (term);
240: }
241: }
242:
243: log_debug("new term: %s", name);
244: term = xmalloc(sizeof *term);
245: term->name = xstrdup(name);
246: term->references = 1;
247: term->flags = 0;
1.7 nicm 248: memset(&term->codes, 0, sizeof term->codes);
1.1 nicm 249: SLIST_INSERT_HEAD(&tty_terms, term, entry);
250:
1.3 nicm 251: /* Set up curses terminal. */
1.1 nicm 252: if (setupterm(name, fd, &error) != OK) {
253: switch (error) {
1.4 matthieu 254: case 1:
255: xasprintf(cause, "can't use hardcopy terminal: %s", name);
256: break;
1.1 nicm 257: case 0:
1.4 matthieu 258: xasprintf(cause, "missing or unsuitable terminal: %s", name);
1.1 nicm 259: break;
1.4 matthieu 260: case -1:
1.1 nicm 261: xasprintf(cause, "can't find terminfo database");
262: break;
263: default:
264: xasprintf(cause, "unknown error");
265: break;
266: }
267: goto error;
268: }
269:
270: /* Fill in codes. */
271: for (i = 0; i < NTTYCODE; i++) {
272: ent = &tty_term_codes[i];
273:
274: code = &term->codes[ent->code];
275: code->type = TTYCODE_NONE;
276: switch (ent->type) {
277: case TTYCODE_NONE:
278: break;
279: case TTYCODE_STRING:
280: s = tigetstr((char *) ent->name);
281: if (s == NULL || s == (char *) -1)
282: break;
283: code->type = TTYCODE_STRING;
284: code->value.string = tty_term_strip(s);
285: break;
286: case TTYCODE_NUMBER:
287: n = tigetnum((char *) ent->name);
288: if (n == -1 || n == -2)
289: break;
290: code->type = TTYCODE_NUMBER;
291: code->value.number = n;
292: break;
293: case TTYCODE_FLAG:
294: n = tigetflag((char *) ent->name);
295: if (n == -1)
296: break;
297: code->type = TTYCODE_FLAG;
298: code->value.number = n;
299: break;
300: }
301: }
1.5 nicm 302: tty_term_override(term, overrides);
1.1 nicm 303:
1.3 nicm 304: /* Delete curses data. */
1.1 nicm 305: del_curterm(cur_term);
306:
307: /* These are always required. */
308: if (!tty_term_has(term, TTYC_CLEAR)) {
309: xasprintf(cause, "terminal does not support clear");
310: goto error;
311: }
312: if (!tty_term_has(term, TTYC_RI)) {
313: xasprintf(cause, "terminal does not support ri");
314: goto error;
315: }
316: if (!tty_term_has(term, TTYC_CUP)) {
317: xasprintf(cause, "terminal does not support cup");
318: goto error;
319: }
320:
321: /* These can be emulated so one of the two is required. */
322: if (!tty_term_has(term, TTYC_CUD1) && !tty_term_has(term, TTYC_CUD)) {
323: xasprintf(cause, "terminal does not support cud1 or cud");
324: goto error;
325: }
326: if (!tty_term_has(term, TTYC_IL1) && !tty_term_has(term, TTYC_IL)) {
327: xasprintf(cause, "terminal does not support il1 or il");
328: goto error;
329: }
330: if (!tty_term_has(term, TTYC_DL1) && !tty_term_has(term, TTYC_DL)) {
331: xasprintf(cause, "terminal does not support dl1 or dl");
332: goto error;
333: }
334: if (!tty_term_has(term, TTYC_ICH1) &&
335: !tty_term_has(term, TTYC_ICH) && (!tty_term_has(term, TTYC_SMIR) ||
336: !tty_term_has(term, TTYC_RMIR))) {
337: xasprintf(cause,
338: "terminal does not support ich1 or ich or smir and rmir");
339: goto error;
340: }
341:
342: /*
343: * Figure out if terminal support default colours. AX is a screen
344: * extension which indicates this. Also check if op (orig_pair) uses
345: * the default colours - if it does, this is a good indication the
346: * terminal supports them.
347: */
348: if (tty_term_flag(term, TTYC_AX))
349: term->flags |= TERM_HASDEFAULTS;
350: if (strcmp(tty_term_string(term, TTYC_OP), "\033[39;49m") == 0)
351: term->flags |= TERM_HASDEFAULTS;
352:
353: /*
354: * Try to figure out if we have 256 or 88 colours. The standard xterm
355: * definitions are broken (well, or the way they are parsed is: in any
356: * case they end up returning 8). So also do a hack.
357: */
358: if (tty_term_number(term, TTYC_COLORS) == 256)
359: term->flags |= TERM_256COLOURS;
360: if (tty_term_number(term, TTYC_COLORS) == 88)
361: term->flags |= TERM_88COLOURS;
362:
363: /*
364: * Terminals without xenl (eat newline glitch) wrap at at $COLUMNS - 1
365: * rather than $COLUMNS (the cursor can never be beyond $COLUMNS - 1).
366: *
367: * This is irritating, most notably because it is impossible to write
368: * to the very bottom-right of the screen without scrolling.
369: *
370: * Flag the terminal here and apply some workarounds in other places to
371: * do the best possible.
372: */
373: if (!tty_term_flag(term, TTYC_XENL))
374: term->flags |= TERM_EARLYWRAP;
375:
376: return (term);
377:
378: error:
379: tty_term_free(term);
380: return (NULL);
381: }
382:
383: void
384: tty_term_free(struct tty_term *term)
385: {
386: u_int i;
387:
388: if (--term->references != 0)
389: return;
390:
391: SLIST_REMOVE(&tty_terms, term, tty_term, entry);
392:
393: for (i = 0; i < NTTYCODE; i++) {
394: if (term->codes[i].type == TTYCODE_STRING)
395: xfree(term->codes[i].value.string);
396: }
397: xfree(term->name);
398: xfree(term);
399: }
400:
401: int
402: tty_term_has(struct tty_term *term, enum tty_code_code code)
403: {
404: return (term->codes[code].type != TTYCODE_NONE);
405: }
406:
407: const char *
408: tty_term_string(struct tty_term *term, enum tty_code_code code)
409: {
410: if (!tty_term_has(term, code))
411: return ("");
412: if (term->codes[code].type != TTYCODE_STRING)
413: log_fatalx("not a string: %d", code);
414: return (term->codes[code].value.string);
415: }
416:
1.3 nicm 417: /* No vtparm. Fucking curses. */
1.1 nicm 418: const char *
419: tty_term_string1(struct tty_term *term, enum tty_code_code code, int a)
420: {
421: return (tparm((char *) tty_term_string(term, code), a));
422: }
423:
424: const char *
425: tty_term_string2(struct tty_term *term, enum tty_code_code code, int a, int b)
426: {
427: return (tparm((char *) tty_term_string(term, code), a, b));
428: }
429:
430: int
431: tty_term_number(struct tty_term *term, enum tty_code_code code)
432: {
433: if (!tty_term_has(term, code))
434: return (0);
435: if (term->codes[code].type != TTYCODE_NUMBER)
436: log_fatalx("not a number: %d", code);
437: return (term->codes[code].value.number);
438: }
439:
440: int
441: tty_term_flag(struct tty_term *term, enum tty_code_code code)
442: {
443: if (!tty_term_has(term, code))
444: return (0);
445: if (term->codes[code].type != TTYCODE_FLAG)
446: log_fatalx("not a flag: %d", code);
447: return (term->codes[code].value.flag);
448: }
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