Annotation of src/usr.bin/tmux/tty-term.c, Revision 1.5
1.5 ! nicm 1: /* $OpenBSD: tty-term.c,v 1.4 2009/08/02 20:47:35 matthieu 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:
! 199: xfree(code->value.string);
! 200: code->value.string = xstrdup(val);
! 201: code->type = ent->type;
! 202: break;
! 203: case TTYCODE_NUMBER:
! 204: n = strtonum(val, 0, INT_MAX, &errstr);
! 205: if (errstr != NULL)
! 206: break;
! 207: code->value.number = n;
! 208: code->type = ent->type;
! 209: break;
! 210: case TTYCODE_FLAG:
! 211: code->value.flag = 1;
! 212: code->type = ent->type;
! 213: break;
! 214: }
! 215: }
! 216:
! 217: if (val != NULL)
! 218: xfree(val);
1.1 nicm 219: }
220: }
221:
1.5 ! nicm 222: xfree(s);
1.1 nicm 223: }
224:
225: struct tty_term *
1.5 ! nicm 226: tty_term_find(char *name, int fd, const char *overrides, char **cause)
1.1 nicm 227: {
228: struct tty_term *term;
229: struct tty_term_code_entry *ent;
230: struct tty_code *code;
231: u_int i;
232: int n, error;
233: char *s;
234:
235: SLIST_FOREACH(term, &tty_terms, entry) {
236: if (strcmp(term->name, name) == 0) {
237: term->references++;
238: return (term);
239: }
240: }
241:
242: log_debug("new term: %s", name);
243: term = xmalloc(sizeof *term);
244: term->name = xstrdup(name);
245: term->references = 1;
246: term->flags = 0;
247: SLIST_INSERT_HEAD(&tty_terms, term, entry);
248:
1.3 nicm 249: /* Set up curses terminal. */
1.1 nicm 250: if (setupterm(name, fd, &error) != OK) {
251: switch (error) {
1.4 matthieu 252: case 1:
253: xasprintf(cause, "can't use hardcopy terminal: %s", name);
254: break;
1.1 nicm 255: case 0:
1.4 matthieu 256: xasprintf(cause, "missing or unsuitable terminal: %s", name);
1.1 nicm 257: break;
1.4 matthieu 258: case -1:
1.1 nicm 259: xasprintf(cause, "can't find terminfo database");
260: break;
261: default:
262: xasprintf(cause, "unknown error");
263: break;
264: }
265: goto error;
266: }
267:
268: /* Fill in codes. */
269: memset(&term->codes, 0, sizeof term->codes);
270: for (i = 0; i < NTTYCODE; i++) {
271: ent = &tty_term_codes[i];
272:
273: code = &term->codes[ent->code];
274: code->type = TTYCODE_NONE;
275: switch (ent->type) {
276: case TTYCODE_NONE:
277: break;
278: case TTYCODE_STRING:
279: s = tigetstr((char *) ent->name);
280: if (s == NULL || s == (char *) -1)
281: break;
282: code->type = TTYCODE_STRING;
283: code->value.string = tty_term_strip(s);
284: break;
285: case TTYCODE_NUMBER:
286: n = tigetnum((char *) ent->name);
287: if (n == -1 || n == -2)
288: break;
289: code->type = TTYCODE_NUMBER;
290: code->value.number = n;
291: break;
292: case TTYCODE_FLAG:
293: n = tigetflag((char *) ent->name);
294: if (n == -1)
295: break;
296: code->type = TTYCODE_FLAG;
297: code->value.number = n;
298: break;
299: }
300: }
1.5 ! nicm 301: tty_term_override(term, overrides);
1.1 nicm 302:
1.3 nicm 303: /* Delete curses data. */
1.1 nicm 304: del_curterm(cur_term);
305:
306: /* These are always required. */
307: if (!tty_term_has(term, TTYC_CLEAR)) {
308: xasprintf(cause, "terminal does not support clear");
309: goto error;
310: }
311: if (!tty_term_has(term, TTYC_RI)) {
312: xasprintf(cause, "terminal does not support ri");
313: goto error;
314: }
315: if (!tty_term_has(term, TTYC_CUP)) {
316: xasprintf(cause, "terminal does not support cup");
317: goto error;
318: }
319:
320: /* These can be emulated so one of the two is required. */
321: if (!tty_term_has(term, TTYC_CUD1) && !tty_term_has(term, TTYC_CUD)) {
322: xasprintf(cause, "terminal does not support cud1 or cud");
323: goto error;
324: }
325: if (!tty_term_has(term, TTYC_IL1) && !tty_term_has(term, TTYC_IL)) {
326: xasprintf(cause, "terminal does not support il1 or il");
327: goto error;
328: }
329: if (!tty_term_has(term, TTYC_DL1) && !tty_term_has(term, TTYC_DL)) {
330: xasprintf(cause, "terminal does not support dl1 or dl");
331: goto error;
332: }
333: if (!tty_term_has(term, TTYC_ICH1) &&
334: !tty_term_has(term, TTYC_ICH) && (!tty_term_has(term, TTYC_SMIR) ||
335: !tty_term_has(term, TTYC_RMIR))) {
336: xasprintf(cause,
337: "terminal does not support ich1 or ich or smir and rmir");
338: goto error;
339: }
340: if (!tty_term_has(term, TTYC_DCH1) && !tty_term_has(term, TTYC_DCH)) {
341: xasprintf(cause, "terminal does not support dch1 or dch");
342: goto error;
343: }
344:
345: /*
346: * Figure out if terminal support default colours. AX is a screen
347: * extension which indicates this. Also check if op (orig_pair) uses
348: * the default colours - if it does, this is a good indication the
349: * terminal supports them.
350: */
351: if (tty_term_flag(term, TTYC_AX))
352: term->flags |= TERM_HASDEFAULTS;
353: if (strcmp(tty_term_string(term, TTYC_OP), "\033[39;49m") == 0)
354: term->flags |= TERM_HASDEFAULTS;
355:
356: /*
357: * Try to figure out if we have 256 or 88 colours. The standard xterm
358: * definitions are broken (well, or the way they are parsed is: in any
359: * case they end up returning 8). So also do a hack.
360: */
361: if (tty_term_number(term, TTYC_COLORS) == 256)
362: term->flags |= TERM_256COLOURS;
363: if (tty_term_number(term, TTYC_COLORS) == 88)
364: term->flags |= TERM_88COLOURS;
365:
366: /*
367: * Terminals without xenl (eat newline glitch) wrap at at $COLUMNS - 1
368: * rather than $COLUMNS (the cursor can never be beyond $COLUMNS - 1).
369: *
370: * This is irritating, most notably because it is impossible to write
371: * to the very bottom-right of the screen without scrolling.
372: *
373: * Flag the terminal here and apply some workarounds in other places to
374: * do the best possible.
375: */
376: if (!tty_term_flag(term, TTYC_XENL))
377: term->flags |= TERM_EARLYWRAP;
378:
379: return (term);
380:
381: error:
382: tty_term_free(term);
383: return (NULL);
384: }
385:
386: void
387: tty_term_free(struct tty_term *term)
388: {
389: u_int i;
390:
391: if (--term->references != 0)
392: return;
393:
394: SLIST_REMOVE(&tty_terms, term, tty_term, entry);
395:
396: for (i = 0; i < NTTYCODE; i++) {
397: if (term->codes[i].type == TTYCODE_STRING)
398: xfree(term->codes[i].value.string);
399: }
400: xfree(term->name);
401: xfree(term);
402: }
403:
404: int
405: tty_term_has(struct tty_term *term, enum tty_code_code code)
406: {
407: return (term->codes[code].type != TTYCODE_NONE);
408: }
409:
410: const char *
411: tty_term_string(struct tty_term *term, enum tty_code_code code)
412: {
413: if (!tty_term_has(term, code))
414: return ("");
415: if (term->codes[code].type != TTYCODE_STRING)
416: log_fatalx("not a string: %d", code);
417: return (term->codes[code].value.string);
418: }
419:
1.3 nicm 420: /* No vtparm. Fucking curses. */
1.1 nicm 421: const char *
422: tty_term_string1(struct tty_term *term, enum tty_code_code code, int a)
423: {
424: return (tparm((char *) tty_term_string(term, code), a));
425: }
426:
427: const char *
428: tty_term_string2(struct tty_term *term, enum tty_code_code code, int a, int b)
429: {
430: return (tparm((char *) tty_term_string(term, code), a, b));
431: }
432:
433: int
434: tty_term_number(struct tty_term *term, enum tty_code_code code)
435: {
436: if (!tty_term_has(term, code))
437: return (0);
438: if (term->codes[code].type != TTYCODE_NUMBER)
439: log_fatalx("not a number: %d", code);
440: return (term->codes[code].value.number);
441: }
442:
443: int
444: tty_term_flag(struct tty_term *term, enum tty_code_code code)
445: {
446: if (!tty_term_has(term, code))
447: return (0);
448: if (term->codes[code].type != TTYCODE_FLAG)
449: log_fatalx("not a flag: %d", code);
450: return (term->codes[code].value.flag);
451: }
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