/* $OpenBSD: tty-term.c,v 1.38 2015/07/28 15:18:10 nicm Exp $ */ /* * Copyright (c) 2008 Nicholas Marriott * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include "tmux.h" void tty_term_override(struct tty_term *, const char *); char *tty_term_strip(const char *); struct tty_terms tty_terms = LIST_HEAD_INITIALIZER(tty_terms); enum tty_code_type { TTYCODE_NONE = 0, TTYCODE_STRING, TTYCODE_NUMBER, TTYCODE_FLAG, }; struct tty_code { enum tty_code_type type; union { char *string; int number; int flag; } value; }; struct tty_term_code_entry { enum tty_code_type type; const char *name; }; const struct tty_term_code_entry tty_term_codes[] = { [TTYC_ACSC] = { TTYCODE_STRING, "acsc" }, [TTYC_AX] = { TTYCODE_FLAG, "AX" }, [TTYC_BCE] = { TTYCODE_FLAG, "bce" }, [TTYC_BEL] = { TTYCODE_STRING, "bel" }, [TTYC_BLINK] = { TTYCODE_STRING, "blink" }, [TTYC_BOLD] = { TTYCODE_STRING, "bold" }, [TTYC_CIVIS] = { TTYCODE_STRING, "civis" }, [TTYC_CLEAR] = { TTYCODE_STRING, "clear" }, [TTYC_CNORM] = { TTYCODE_STRING, "cnorm" }, [TTYC_COLORS] = { TTYCODE_NUMBER, "colors" }, [TTYC_CR] = { TTYCODE_STRING, "Cr" }, [TTYC_CS] = { TTYCODE_STRING, "Cs" }, [TTYC_CSR] = { TTYCODE_STRING, "csr" }, [TTYC_CUB] = { TTYCODE_STRING, "cub" }, [TTYC_CUB1] = { TTYCODE_STRING, "cub1" }, [TTYC_CUD] = { TTYCODE_STRING, "cud" }, [TTYC_CUD1] = { TTYCODE_STRING, "cud1" }, [TTYC_CUF] = { TTYCODE_STRING, "cuf" }, [TTYC_CUF1] = { TTYCODE_STRING, "cuf1" }, [TTYC_CUP] = { TTYCODE_STRING, "cup" }, [TTYC_CUU] = { TTYCODE_STRING, "cuu" }, [TTYC_CUU1] = { TTYCODE_STRING, "cuu1" }, [TTYC_CVVIS] = { TTYCODE_STRING, "cvvis" }, [TTYC_DCH] = { TTYCODE_STRING, "dch" }, [TTYC_DCH1] = { TTYCODE_STRING, "dch1" }, [TTYC_DIM] = { TTYCODE_STRING, "dim" }, [TTYC_DL] = { TTYCODE_STRING, "dl" }, [TTYC_DL1] = { TTYCODE_STRING, "dl1" }, [TTYC_E3] = { TTYCODE_STRING, "E3" }, [TTYC_ECH] = { TTYCODE_STRING, "ech" }, [TTYC_EL] = { TTYCODE_STRING, "el" }, [TTYC_EL1] = { TTYCODE_STRING, "el1" }, [TTYC_ENACS] = { TTYCODE_STRING, "enacs" }, [TTYC_FSL] = { TTYCODE_STRING, "fsl" }, [TTYC_HOME] = { TTYCODE_STRING, "home" }, [TTYC_HPA] = { TTYCODE_STRING, "hpa" }, [TTYC_ICH] = { TTYCODE_STRING, "ich" }, [TTYC_ICH1] = { TTYCODE_STRING, "ich1" }, [TTYC_IL] = { TTYCODE_STRING, "il" }, [TTYC_IL1] = { TTYCODE_STRING, "il1" }, [TTYC_INVIS] = { TTYCODE_STRING, "invis" }, [TTYC_IS1] = { TTYCODE_STRING, "is1" }, [TTYC_IS2] = { TTYCODE_STRING, "is2" }, [TTYC_IS3] = { TTYCODE_STRING, "is3" }, [TTYC_KCBT] = { TTYCODE_STRING, "kcbt" }, [TTYC_KCUB1] = { TTYCODE_STRING, "kcub1" }, [TTYC_KCUD1] = { TTYCODE_STRING, "kcud1" }, [TTYC_KCUF1] = { TTYCODE_STRING, "kcuf1" }, [TTYC_KCUU1] = { TTYCODE_STRING, "kcuu1" }, [TTYC_KDC2] = { TTYCODE_STRING, "kDC" }, [TTYC_KDC3] = { TTYCODE_STRING, "kDC3" }, [TTYC_KDC4] = { TTYCODE_STRING, "kDC4" }, [TTYC_KDC5] = { TTYCODE_STRING, "kDC5" }, [TTYC_KDC6] = { TTYCODE_STRING, "kDC6" }, [TTYC_KDC7] = { TTYCODE_STRING, "kDC7" }, [TTYC_KDCH1] = { TTYCODE_STRING, "kdch1" }, [TTYC_KDN2] = { TTYCODE_STRING, "kDN" }, [TTYC_KDN3] = { TTYCODE_STRING, "kDN3" }, [TTYC_KDN4] = { TTYCODE_STRING, "kDN4" }, [TTYC_KDN5] = { TTYCODE_STRING, "kDN5" }, [TTYC_KDN6] = { TTYCODE_STRING, "kDN6" }, [TTYC_KDN7] = { TTYCODE_STRING, "kDN7" }, [TTYC_KEND] = { TTYCODE_STRING, "kend" }, [TTYC_KEND2] = { TTYCODE_STRING, "kEND" }, [TTYC_KEND3] = { TTYCODE_STRING, "kEND3" }, [TTYC_KEND4] = { TTYCODE_STRING, "kEND4" }, [TTYC_KEND5] = { TTYCODE_STRING, "kEND5" }, [TTYC_KEND6] = { TTYCODE_STRING, "kEND6" }, [TTYC_KEND7] = { TTYCODE_STRING, "kEND7" }, [TTYC_KF1] = { TTYCODE_STRING, "kf1" }, [TTYC_KF10] = { TTYCODE_STRING, "kf10" }, [TTYC_KF11] = { TTYCODE_STRING, "kf11" }, [TTYC_KF12] = { TTYCODE_STRING, "kf12" }, [TTYC_KF13] = { TTYCODE_STRING, "kf13" }, [TTYC_KF14] = { TTYCODE_STRING, "kf14" }, [TTYC_KF15] = { TTYCODE_STRING, "kf15" }, [TTYC_KF16] = { TTYCODE_STRING, "kf16" }, [TTYC_KF17] = { TTYCODE_STRING, "kf17" }, [TTYC_KF18] = { TTYCODE_STRING, "kf18" }, [TTYC_KF19] = { TTYCODE_STRING, "kf19" }, [TTYC_KF2] = { TTYCODE_STRING, "kf2" }, [TTYC_KF20] = { TTYCODE_STRING, "kf20" }, [TTYC_KF21] = { TTYCODE_STRING, "kf21" }, [TTYC_KF22] = { TTYCODE_STRING, "kf22" }, [TTYC_KF23] = { TTYCODE_STRING, "kf23" }, [TTYC_KF24] = { TTYCODE_STRING, "kf24" }, [TTYC_KF25] = { TTYCODE_STRING, "kf25" }, [TTYC_KF26] = { TTYCODE_STRING, "kf26" }, [TTYC_KF27] = { TTYCODE_STRING, "kf27" }, [TTYC_KF28] = { TTYCODE_STRING, "kf28" }, [TTYC_KF29] = { TTYCODE_STRING, "kf29" }, [TTYC_KF3] = { TTYCODE_STRING, "kf3" }, [TTYC_KF30] = { TTYCODE_STRING, "kf30" }, [TTYC_KF31] = { TTYCODE_STRING, "kf31" }, [TTYC_KF32] = { TTYCODE_STRING, "kf32" }, [TTYC_KF33] = { TTYCODE_STRING, "kf33" }, [TTYC_KF34] = { TTYCODE_STRING, "kf34" }, [TTYC_KF35] = { TTYCODE_STRING, "kf35" }, [TTYC_KF36] = { TTYCODE_STRING, "kf36" }, [TTYC_KF37] = { TTYCODE_STRING, "kf37" }, [TTYC_KF38] = { TTYCODE_STRING, "kf38" }, [TTYC_KF39] = { TTYCODE_STRING, "kf39" }, [TTYC_KF4] = { TTYCODE_STRING, "kf4" }, [TTYC_KF40] = { TTYCODE_STRING, "kf40" }, [TTYC_KF41] = { TTYCODE_STRING, "kf41" }, [TTYC_KF42] = { TTYCODE_STRING, "kf42" }, [TTYC_KF43] = { TTYCODE_STRING, "kf43" }, [TTYC_KF44] = { TTYCODE_STRING, "kf44" }, [TTYC_KF45] = { TTYCODE_STRING, "kf45" }, [TTYC_KF46] = { TTYCODE_STRING, "kf46" }, [TTYC_KF47] = { TTYCODE_STRING, "kf47" }, [TTYC_KF48] = { TTYCODE_STRING, "kf48" }, [TTYC_KF49] = { TTYCODE_STRING, "kf49" }, [TTYC_KF5] = { TTYCODE_STRING, "kf5" }, [TTYC_KF50] = { TTYCODE_STRING, "kf50" }, [TTYC_KF51] = { TTYCODE_STRING, "kf51" }, [TTYC_KF52] = { TTYCODE_STRING, "kf52" }, [TTYC_KF53] = { TTYCODE_STRING, "kf53" }, [TTYC_KF54] = { TTYCODE_STRING, "kf54" }, [TTYC_KF55] = { TTYCODE_STRING, "kf55" }, [TTYC_KF56] = { TTYCODE_STRING, "kf56" }, [TTYC_KF57] = { TTYCODE_STRING, "kf57" }, [TTYC_KF58] = { TTYCODE_STRING, "kf58" }, [TTYC_KF59] = { TTYCODE_STRING, "kf59" }, [TTYC_KF6] = { TTYCODE_STRING, "kf6" }, [TTYC_KF60] = { TTYCODE_STRING, "kf60" }, [TTYC_KF61] = { TTYCODE_STRING, "kf61" }, [TTYC_KF62] = { TTYCODE_STRING, "kf62" }, [TTYC_KF63] = { TTYCODE_STRING, "kf63" }, [TTYC_KF7] = { TTYCODE_STRING, "kf7" }, [TTYC_KF8] = { TTYCODE_STRING, "kf8" }, [TTYC_KF9] = { TTYCODE_STRING, "kf9" }, [TTYC_KHOM2] = { TTYCODE_STRING, "kHOM" }, [TTYC_KHOM3] = { TTYCODE_STRING, "kHOM3" }, [TTYC_KHOM4] = { TTYCODE_STRING, "kHOM4" }, [TTYC_KHOM5] = { TTYCODE_STRING, "kHOM5" }, [TTYC_KHOM6] = { TTYCODE_STRING, "kHOM6" }, [TTYC_KHOM7] = { TTYCODE_STRING, "kHOM7" }, [TTYC_KHOME] = { TTYCODE_STRING, "khome" }, [TTYC_KIC2] = { TTYCODE_STRING, "kIC" }, [TTYC_KIC3] = { TTYCODE_STRING, "kIC3" }, [TTYC_KIC4] = { TTYCODE_STRING, "kIC4" }, [TTYC_KIC5] = { TTYCODE_STRING, "kIC5" }, [TTYC_KIC6] = { TTYCODE_STRING, "kIC6" }, [TTYC_KIC7] = { TTYCODE_STRING, "kIC7" }, [TTYC_KICH1] = { TTYCODE_STRING, "kich1" }, [TTYC_KLFT2] = { TTYCODE_STRING, "kLFT" }, [TTYC_KLFT3] = { TTYCODE_STRING, "kLFT3" }, [TTYC_KLFT4] = { TTYCODE_STRING, "kLFT4" }, [TTYC_KLFT5] = { TTYCODE_STRING, "kLFT5" }, [TTYC_KLFT6] = { TTYCODE_STRING, "kLFT6" }, [TTYC_KLFT7] = { TTYCODE_STRING, "kLFT7" }, [TTYC_KMOUS] = { TTYCODE_STRING, "kmous" }, [TTYC_KNP] = { TTYCODE_STRING, "knp" }, [TTYC_KNXT2] = { TTYCODE_STRING, "kNXT" }, [TTYC_KNXT3] = { TTYCODE_STRING, "kNXT3" }, [TTYC_KNXT4] = { TTYCODE_STRING, "kNXT4" }, [TTYC_KNXT5] = { TTYCODE_STRING, "kNXT5" }, [TTYC_KNXT6] = { TTYCODE_STRING, "kNXT6" }, [TTYC_KNXT7] = { TTYCODE_STRING, "kNXT7" }, [TTYC_KPP] = { TTYCODE_STRING, "kpp" }, [TTYC_KPRV2] = { TTYCODE_STRING, "kPRV" }, [TTYC_KPRV3] = { TTYCODE_STRING, "kPRV3" }, [TTYC_KPRV4] = { TTYCODE_STRING, "kPRV4" }, [TTYC_KPRV5] = { TTYCODE_STRING, "kPRV5" }, [TTYC_KPRV6] = { TTYCODE_STRING, "kPRV6" }, [TTYC_KPRV7] = { TTYCODE_STRING, "kPRV7" }, [TTYC_KRIT2] = { TTYCODE_STRING, "kRIT" }, [TTYC_KRIT3] = { TTYCODE_STRING, "kRIT3" }, [TTYC_KRIT4] = { TTYCODE_STRING, "kRIT4" }, [TTYC_KRIT5] = { TTYCODE_STRING, "kRIT5" }, [TTYC_KRIT6] = { TTYCODE_STRING, "kRIT6" }, [TTYC_KRIT7] = { TTYCODE_STRING, "kRIT7" }, [TTYC_KUP2] = { TTYCODE_STRING, "kUP" }, [TTYC_KUP3] = { TTYCODE_STRING, "kUP3" }, [TTYC_KUP4] = { TTYCODE_STRING, "kUP4" }, [TTYC_KUP5] = { TTYCODE_STRING, "kUP5" }, [TTYC_KUP6] = { TTYCODE_STRING, "kUP6" }, [TTYC_KUP7] = { TTYCODE_STRING, "kUP7" }, [TTYC_MS] = { TTYCODE_STRING, "Ms" }, [TTYC_OP] = { TTYCODE_STRING, "op" }, [TTYC_REV] = { TTYCODE_STRING, "rev" }, [TTYC_RI] = { TTYCODE_STRING, "ri" }, [TTYC_RMACS] = { TTYCODE_STRING, "rmacs" }, [TTYC_RMCUP] = { TTYCODE_STRING, "rmcup" }, [TTYC_RMKX] = { TTYCODE_STRING, "rmkx" }, [TTYC_SE] = { TTYCODE_STRING, "Se" }, [TTYC_SETAB] = { TTYCODE_STRING, "setab" }, [TTYC_SETAF] = { TTYCODE_STRING, "setaf" }, [TTYC_SGR0] = { TTYCODE_STRING, "sgr0" }, [TTYC_SITM] = { TTYCODE_STRING, "sitm" }, [TTYC_SMACS] = { TTYCODE_STRING, "smacs" }, [TTYC_SMCUP] = { TTYCODE_STRING, "smcup" }, [TTYC_SMKX] = { TTYCODE_STRING, "smkx" }, [TTYC_SMSO] = { TTYCODE_STRING, "smso" }, [TTYC_SMUL] = { TTYCODE_STRING, "smul" }, [TTYC_SS] = { TTYCODE_STRING, "Ss" }, [TTYC_TSL] = { TTYCODE_STRING, "tsl" }, [TTYC_VPA] = { TTYCODE_STRING, "vpa" }, [TTYC_XENL] = { TTYCODE_FLAG, "xenl" }, [TTYC_XT] = { TTYCODE_FLAG, "XT" }, }; u_int tty_term_ncodes(void) { return (nitems(tty_term_codes)); } char * tty_term_strip(const char *s) { const char *ptr; static char buf[BUFSIZ]; size_t len; /* Ignore strings with no padding. */ if (strchr(s, '$') == NULL) return (xstrdup(s)); len = 0; for (ptr = s; *ptr != '\0'; ptr++) { if (*ptr == '$' && *(ptr + 1) == '<') { while (*ptr != '\0' && *ptr != '>') ptr++; if (*ptr == '>') ptr++; } buf[len++] = *ptr; if (len == (sizeof buf) - 1) break; } buf[len] = '\0'; return (xstrdup(buf)); } void tty_term_override(struct tty_term *term, const char *overrides) { const struct tty_term_code_entry *ent; struct tty_code *code; char *termnext, *termstr; char *entnext, *entstr; char *s, *ptr, *val; const char *errstr; u_int i; int n, removeflag; s = xstrdup(overrides); termnext = s; while ((termstr = strsep(&termnext, ",")) != NULL) { entnext = termstr; entstr = strsep(&entnext, ":"); if (entstr == NULL || entnext == NULL) continue; if (fnmatch(entstr, term->name, 0) != 0) continue; while ((entstr = strsep(&entnext, ":")) != NULL) { if (*entstr == '\0') continue; val = NULL; removeflag = 0; if ((ptr = strchr(entstr, '=')) != NULL) { *ptr++ = '\0'; val = xstrdup(ptr); if (strunvis(val, ptr) == -1) { free(val); val = xstrdup(ptr); } } else if (entstr[strlen(entstr) - 1] == '@') { entstr[strlen(entstr) - 1] = '\0'; removeflag = 1; } else val = xstrdup(""); log_debug("%s override: %s %s", term->name, entstr, removeflag ? "@" : val); for (i = 0; i < tty_term_ncodes(); i++) { ent = &tty_term_codes[i]; if (strcmp(entstr, ent->name) != 0) continue; code = &term->codes[i]; if (removeflag) { code->type = TTYCODE_NONE; continue; } switch (ent->type) { case TTYCODE_NONE: break; case TTYCODE_STRING: if (code->type == TTYCODE_STRING) free(code->value.string); code->value.string = xstrdup(val); code->type = ent->type; break; case TTYCODE_NUMBER: n = strtonum(val, 0, INT_MAX, &errstr); if (errstr != NULL) break; code->value.number = n; code->type = ent->type; break; case TTYCODE_FLAG: code->value.flag = 1; code->type = ent->type; break; } } free(val); } } free(s); } struct tty_term * tty_term_find(char *name, int fd, char **cause) { struct tty_term *term; const struct tty_term_code_entry *ent; struct tty_code *code; u_int i; int n, error; char *s; const char *acs; LIST_FOREACH(term, &tty_terms, entry) { if (strcmp(term->name, name) == 0) { term->references++; return (term); } } log_debug("new term: %s", name); term = xmalloc(sizeof *term); term->name = xstrdup(name); term->references = 1; term->flags = 0; term->codes = xcalloc (tty_term_ncodes(), sizeof *term->codes); LIST_INSERT_HEAD(&tty_terms, term, entry); /* Set up curses terminal. */ if (setupterm(name, fd, &error) != OK) { switch (error) { case 1: xasprintf( cause, "can't use hardcopy terminal: %s", name); break; case 0: xasprintf( cause, "missing or unsuitable terminal: %s", name); break; case -1: xasprintf(cause, "can't find terminfo database"); break; default: xasprintf(cause, "unknown error"); break; } goto error; } /* Fill in codes. */ for (i = 0; i < tty_term_ncodes(); i++) { ent = &tty_term_codes[i]; code = &term->codes[i]; code->type = TTYCODE_NONE; switch (ent->type) { case TTYCODE_NONE: break; case TTYCODE_STRING: s = tigetstr((char *) ent->name); if (s == NULL || s == (char *) -1) break; code->type = TTYCODE_STRING; code->value.string = tty_term_strip(s); break; case TTYCODE_NUMBER: n = tigetnum((char *) ent->name); if (n == -1 || n == -2) break; code->type = TTYCODE_NUMBER; code->value.number = n; break; case TTYCODE_FLAG: n = tigetflag((char *) ent->name); if (n == -1) break; code->type = TTYCODE_FLAG; code->value.number = n; break; } } /* Apply terminal overrides. */ s = options_get_string(&global_options, "terminal-overrides"); tty_term_override(term, s); /* Delete curses data. */ del_curterm(cur_term); /* These are always required. */ if (!tty_term_has(term, TTYC_CLEAR)) { xasprintf(cause, "terminal does not support clear"); goto error; } if (!tty_term_has(term, TTYC_CUP)) { xasprintf(cause, "terminal does not support cup"); goto error; } /* These can be emulated so one of the two is required. */ if (!tty_term_has(term, TTYC_CUD1) && !tty_term_has(term, TTYC_CUD)) { xasprintf(cause, "terminal does not support cud1 or cud"); goto error; } /* Figure out if we have 256. */ if (tty_term_number(term, TTYC_COLORS) == 256) term->flags |= TERM_256COLOURS; /* * Terminals without xenl (eat newline glitch) wrap at at $COLUMNS - 1 * rather than $COLUMNS (the cursor can never be beyond $COLUMNS - 1). * * This is irritating, most notably because it is impossible to write * to the very bottom-right of the screen without scrolling. * * Flag the terminal here and apply some workarounds in other places to * do the best possible. */ if (!tty_term_flag(term, TTYC_XENL)) term->flags |= TERM_EARLYWRAP; /* Generate ACS table. If none is present, use nearest ASCII. */ memset(term->acs, 0, sizeof term->acs); if (tty_term_has(term, TTYC_ACSC)) acs = tty_term_string(term, TTYC_ACSC); else acs = "a#j+k+l+m+n+o-p-q-r-s-t+u+v+w+x|y~."; for (; acs[0] != '\0' && acs[1] != '\0'; acs += 2) term->acs[(u_char) acs[0]][0] = acs[1]; /* On terminals with xterm titles (XT), fill in tsl and fsl. */ if (tty_term_flag(term, TTYC_XT) && !tty_term_has(term, TTYC_TSL) && !tty_term_has(term, TTYC_FSL)) { code = &term->codes[TTYC_TSL]; code->value.string = xstrdup("\033]0;"); code->type = TTYCODE_STRING; code = &term->codes[TTYC_FSL]; code->value.string = xstrdup("\007"); code->type = TTYCODE_STRING; } return (term); error: tty_term_free(term); return (NULL); } void tty_term_free(struct tty_term *term) { u_int i; if (--term->references != 0) return; LIST_REMOVE(term, entry); for (i = 0; i < tty_term_ncodes(); i++) { if (term->codes[i].type == TTYCODE_STRING) free(term->codes[i].value.string); } free(term->codes); free(term->name); free(term); } int tty_term_has(struct tty_term *term, enum tty_code_code code) { return (term->codes[code].type != TTYCODE_NONE); } const char * tty_term_string(struct tty_term *term, enum tty_code_code code) { if (!tty_term_has(term, code)) return (""); if (term->codes[code].type != TTYCODE_STRING) log_fatalx("not a string: %d", code); return (term->codes[code].value.string); } /* No vtparm. Fucking curses. */ const char * tty_term_string1(struct tty_term *term, enum tty_code_code code, int a) { return (tparm((char *) tty_term_string(term, code), a)); } const char * tty_term_string2(struct tty_term *term, enum tty_code_code code, int a, int b) { return (tparm((char *) tty_term_string(term, code), a, b)); } const char * tty_term_ptr1(struct tty_term *term, enum tty_code_code code, const void *a) { return (tparm((char *) tty_term_string(term, code), a)); } const char * tty_term_ptr2(struct tty_term *term, enum tty_code_code code, const void *a, const void *b) { return (tparm((char *) tty_term_string(term, code), a, b)); } int tty_term_number(struct tty_term *term, enum tty_code_code code) { if (!tty_term_has(term, code)) return (0); if (term->codes[code].type != TTYCODE_NUMBER) log_fatalx("not a number: %d", code); return (term->codes[code].value.number); } int tty_term_flag(struct tty_term *term, enum tty_code_code code) { if (!tty_term_has(term, code)) return (0); if (term->codes[code].type != TTYCODE_FLAG) log_fatalx("not a flag: %d", code); return (term->codes[code].value.flag); } const char * tty_term_describe(struct tty_term *term, enum tty_code_code code) { static char s[256]; char out[128]; switch (term->codes[code].type) { case TTYCODE_NONE: xsnprintf(s, sizeof s, "%4u: %s: [missing]", code, tty_term_codes[code].name); break; case TTYCODE_STRING: strnvis(out, term->codes[code].value.string, sizeof out, VIS_OCTAL|VIS_TAB|VIS_NL); xsnprintf(s, sizeof s, "%4u: %s: (string) %s", code, tty_term_codes[code].name, out); break; case TTYCODE_NUMBER: xsnprintf(s, sizeof s, "%4u: %s: (number) %d", code, tty_term_codes[code].name, term->codes[code].value.number); break; case TTYCODE_FLAG: xsnprintf(s, sizeof s, "%4u: %s: (flag) %s", code, tty_term_codes[code].name, term->codes[code].value.flag ? "true" : "false"); break; } return (s); }