diff options
Diffstat (limited to 'tty-term.c')
| -rw-r--r-- | tty-term.c | 393 |
1 files changed, 393 insertions, 0 deletions
diff --git a/tty-term.c b/tty-term.c new file mode 100644 index 00000000..200cc020 --- /dev/null +++ b/tty-term.c @@ -0,0 +1,393 @@ +/* $OpenBSD$ */ + +/* + * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net> + * + * 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 <sys/types.h> + +#include <ncurses.h> +#include <string.h> +#include <term.h> + +#include "tmux.h" + +void tty_term_quirks(struct tty_term *); +char *tty_term_strip(const char *); + +struct tty_terms tty_terms = SLIST_HEAD_INITIALIZER(tty_terms); + +struct tty_term_code_entry tty_term_codes[NTTYCODE] = { + { TTYC_AX, TTYCODE_FLAG, "AX" }, + { TTYC_ACSC, TTYCODE_STRING, "acsc" }, + { 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_CSR, TTYCODE_STRING, "csr" }, + { TTYC_CUD, TTYCODE_STRING, "cud" }, + { TTYC_CUD1, TTYCODE_STRING, "cud1" }, + { TTYC_CUP, TTYCODE_STRING, "cup" }, + { 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_EL, TTYCODE_STRING, "el" }, + { TTYC_EL1, TTYCODE_STRING, "el1" }, + { TTYC_ENACS, TTYCODE_STRING, "enacs" }, + { 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_KDCH1, TTYCODE_STRING, "kdch1" }, + { TTYC_KEND, TTYCODE_STRING, "kend" }, + { 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_KF20, TTYCODE_STRING, "kf20" }, + { TTYC_KF2, TTYCODE_STRING, "kf2" }, + { TTYC_KF3, TTYCODE_STRING, "kf3" }, + { TTYC_KF4, TTYCODE_STRING, "kf4" }, + { TTYC_KF5, TTYCODE_STRING, "kf5" }, + { TTYC_KF6, TTYCODE_STRING, "kf6" }, + { TTYC_KF7, TTYCODE_STRING, "kf7" }, + { TTYC_KF8, TTYCODE_STRING, "kf8" }, + { TTYC_KF9, TTYCODE_STRING, "kf9" }, + { TTYC_KHOME, TTYCODE_STRING, "khome" }, + { TTYC_KICH1, TTYCODE_STRING, "kich1" }, + { TTYC_KMOUS, TTYCODE_STRING, "kmous" }, + { TTYC_KNP, TTYCODE_STRING, "knp" }, + { TTYC_KPP, TTYCODE_STRING, "kpp" }, + { 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_RMIR, TTYCODE_STRING, "rmir" }, + { TTYC_RMKX, TTYCODE_STRING, "rmkx" }, + { TTYC_SETAB, TTYCODE_STRING, "setab" }, + { TTYC_SETAF, TTYCODE_STRING, "setaf" }, + { TTYC_SGR0, TTYCODE_STRING, "sgr0" }, + { TTYC_SMACS, TTYCODE_STRING, "smacs" }, + { TTYC_SMCUP, TTYCODE_STRING, "smcup" }, + { TTYC_SMIR, TTYCODE_STRING, "smir" }, + { TTYC_SMKX, TTYCODE_STRING, "smkx" }, + { TTYC_SMSO, TTYCODE_STRING, "smso" }, + { TTYC_SMUL, TTYCODE_STRING, "smul" }, + { TTYC_XENL, TTYCODE_FLAG, "xenl" }, +}; + +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_quirks(struct tty_term *term) +{ + if (strncmp(term->name, "rxvt", 4) == 0) { + /* rxvt supports dch1 but some termcap files do not have it. */ + if (!tty_term_has(term, TTYC_DCH1)) { + term->codes[TTYC_DCH1].type = TTYCODE_STRING; + term->codes[TTYC_DCH1].value.string = xstrdup("\033[P"); + } + } + + if (strncmp(term->name, "xterm", 5) == 0) { + /* xterm supports ich1 but some termcaps omit it. */ + if (!tty_term_has(term, TTYC_ICH1)) { + term->codes[TTYC_ICH1].type = TTYCODE_STRING; + term->codes[TTYC_ICH1].value.string = xstrdup("\033[@"); + } + } +} + +struct tty_term * +tty_term_find(char *name, int fd, char **cause) +{ + struct tty_term *term; + struct tty_term_code_entry *ent; + struct tty_code *code; + u_int i; + int n, error; + char *s; + + SLIST_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; + SLIST_INSERT_HEAD(&tty_terms, term, entry); + + /* Set up ncurses terminal. */ + if (setupterm(name, fd, &error) != OK) { + switch (error) { + case 0: + xasprintf(cause, "can't use hardcopy terminal"); + break; + case 1: + xasprintf(cause, "missing or unsuitable terminal"); + break; + case 2: + xasprintf(cause, "can't find terminfo database"); + break; + default: + xasprintf(cause, "unknown error"); + break; + } + goto error; + } + + /* Fill in codes. */ + memset(&term->codes, 0, sizeof term->codes); + for (i = 0; i < NTTYCODE; i++) { + ent = &tty_term_codes[i]; + + code = &term->codes[ent->code]; + 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; + } + } + tty_term_quirks(term); + + /* Delete ncurses 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_RI)) { + xasprintf(cause, "terminal does not support ri"); + 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; + } + if (!tty_term_has(term, TTYC_IL1) && !tty_term_has(term, TTYC_IL)) { + xasprintf(cause, "terminal does not support il1 or il"); + goto error; + } + if (!tty_term_has(term, TTYC_DL1) && !tty_term_has(term, TTYC_DL)) { + xasprintf(cause, "terminal does not support dl1 or dl"); + goto error; + } + if (!tty_term_has(term, TTYC_ICH1) && + !tty_term_has(term, TTYC_ICH) && (!tty_term_has(term, TTYC_SMIR) || + !tty_term_has(term, TTYC_RMIR))) { + xasprintf(cause, + "terminal does not support ich1 or ich or smir and rmir"); + goto error; + } + if (!tty_term_has(term, TTYC_DCH1) && !tty_term_has(term, TTYC_DCH)) { + xasprintf(cause, "terminal does not support dch1 or dch"); + goto error; + } + + /* + * Figure out if terminal support default colours. AX is a screen + * extension which indicates this. Also check if op (orig_pair) uses + * the default colours - if it does, this is a good indication the + * terminal supports them. + */ + if (tty_term_flag(term, TTYC_AX)) + term->flags |= TERM_HASDEFAULTS; + if (strcmp(tty_term_string(term, TTYC_OP), "\033[39;49m") == 0) + term->flags |= TERM_HASDEFAULTS; + + /* + * Try to figure out if we have 256 or 88 colours. The standard xterm + * definitions are broken (well, or the way they are parsed is: in any + * case they end up returning 8). So also do a hack. + */ + if (tty_term_number(term, TTYC_COLORS) == 256) + term->flags |= TERM_256COLOURS; + if (strstr(name, "256col") != NULL) /* XXX HACK */ + term->flags |= TERM_256COLOURS; + if (tty_term_number(term, TTYC_COLORS) == 88) + term->flags |= TERM_88COLOURS; + if (strstr(name, "88col") != NULL) /* XXX HACK */ + term->flags |= TERM_88COLOURS; + + /* + * 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; + + 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; + + SLIST_REMOVE(&tty_terms, term, tty_term, entry); + + for (i = 0; i < NTTYCODE; i++) { + if (term->codes[i].type == TTYCODE_STRING) + xfree(term->codes[i].value.string); + } + xfree(term->name); + xfree(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 ncurses. */ +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)); +} + +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); +} + |