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/* $Id: tty-term.c,v 1.17 2009-03-07 10:29:06 nicm Exp $ */
/*
* 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" },
};
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[@");
}
}
#ifdef __FreeBSD__
if (strncmp(term->name, "cons", 4) == 0) {
/*
* FreeBSD's console wraps lines at $COLUMNS - 1 rather than
* $COLUMNS (the cursor can never be beyond $COLUMNS - 1) and
* does not appear to support changing this behaviour, or any
* of the obvious possibilities (turning off right margin
* wrapping, insert mode).
*
* 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.
*/
term->flags |= TERM_EARLYWRAP;
}
#endif
}
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(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(ent->name);
if (n == -1 || n == -2)
break;
code->type = TTYCODE_NUMBER;
code->value.number = n;
break;
case TTYCODE_FLAG:
n = tigetflag(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;
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(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(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);
}