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415 lines
11 KiB
C
415 lines
11 KiB
C
/* $Id: tty-keys.c,v 1.25 2009-04-17 12:36:21 nicm Exp $ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/time.h>
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#include <string.h>
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#include "tmux.h"
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void tty_keys_add(struct tty *, const char *, int, int);
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int tty_keys_parse_xterm(struct tty *, char *, size_t, size_t *);
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int tty_keys_parse_mouse(struct tty *, char *, size_t, size_t *, u_char *);
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struct tty_key_ent {
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enum tty_code_code code;
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const char *string;
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int key;
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int flags;
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};
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struct tty_key_ent tty_keys[] = {
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/* Function keys. */
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{ TTYC_KF1, NULL, KEYC_F1, TTYKEY_CTRL },
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{ TTYC_KF2, NULL, KEYC_F2, TTYKEY_CTRL },
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{ TTYC_KF3, NULL, KEYC_F3, TTYKEY_CTRL },
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{ TTYC_KF4, NULL, KEYC_F4, TTYKEY_CTRL },
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{ TTYC_KF5, NULL, KEYC_F5, TTYKEY_CTRL },
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{ TTYC_KF6, NULL, KEYC_F6, TTYKEY_CTRL },
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{ TTYC_KF7, NULL, KEYC_F7, TTYKEY_CTRL },
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{ TTYC_KF8, NULL, KEYC_F8, TTYKEY_CTRL },
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{ TTYC_KF9, NULL, KEYC_F9, TTYKEY_CTRL },
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{ TTYC_KF10, NULL, KEYC_F10, TTYKEY_CTRL },
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{ TTYC_KF11, NULL, KEYC_F11, TTYKEY_CTRL },
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{ TTYC_KF12, NULL, KEYC_F12, TTYKEY_CTRL },
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{ TTYC_KF13, NULL, KEYC_F13, TTYKEY_CTRL },
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{ TTYC_KF14, NULL, KEYC_F14, TTYKEY_CTRL },
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{ TTYC_KF15, NULL, KEYC_F15, TTYKEY_CTRL },
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{ TTYC_KF16, NULL, KEYC_F16, TTYKEY_CTRL },
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{ TTYC_KF17, NULL, KEYC_F17, TTYKEY_CTRL },
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{ TTYC_KF18, NULL, KEYC_F18, TTYKEY_CTRL },
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{ TTYC_KF19, NULL, KEYC_F19, TTYKEY_CTRL },
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{ TTYC_KF20, NULL, KEYC_F20, TTYKEY_CTRL },
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{ TTYC_KICH1, NULL, KEYC_IC, TTYKEY_CTRL },
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{ TTYC_KDCH1, NULL, KEYC_DC, TTYKEY_CTRL },
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{ TTYC_KHOME, NULL, KEYC_HOME, TTYKEY_CTRL },
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{ TTYC_KEND, NULL, KEYC_END, TTYKEY_CTRL },
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{ TTYC_KNP, NULL, KEYC_NPAGE, TTYKEY_CTRL },
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{ TTYC_KPP, NULL, KEYC_PPAGE, TTYKEY_CTRL },
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{ TTYC_KCBT, NULL, KEYC_BTAB, TTYKEY_CTRL },
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/* Arrow keys. */
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{ 0, "\033OA", KEYC_UP, TTYKEY_RAW },
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{ 0, "\033OB", KEYC_DOWN, TTYKEY_RAW },
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{ 0, "\033OC", KEYC_RIGHT, TTYKEY_RAW },
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{ 0, "\033OD", KEYC_LEFT, TTYKEY_RAW },
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{ 0, "\033[A", KEYC_UP, TTYKEY_RAW },
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{ 0, "\033[B", KEYC_DOWN, TTYKEY_RAW },
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{ 0, "\033[C", KEYC_RIGHT, TTYKEY_RAW },
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{ 0, "\033[D", KEYC_LEFT, TTYKEY_RAW },
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{ 0, "\033Oa", KEYC_ADDCTL(KEYC_UP), TTYKEY_RAW },
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{ 0, "\033Ob", KEYC_ADDCTL(KEYC_DOWN), TTYKEY_RAW },
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{ 0, "\033Oc", KEYC_ADDCTL(KEYC_RIGHT), TTYKEY_RAW },
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{ 0, "\033Od", KEYC_ADDCTL(KEYC_LEFT), TTYKEY_RAW },
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{ 0, "\033[a", KEYC_ADDSFT(KEYC_UP), TTYKEY_RAW },
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{ 0, "\033[b", KEYC_ADDSFT(KEYC_DOWN), TTYKEY_RAW },
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{ 0, "\033[c", KEYC_ADDSFT(KEYC_RIGHT), TTYKEY_RAW },
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{ 0, "\033[d", KEYC_ADDSFT(KEYC_LEFT), TTYKEY_RAW },
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{ TTYC_KCUU1, NULL, KEYC_UP, TTYKEY_CTRL },
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{ TTYC_KCUD1, NULL, KEYC_DOWN, TTYKEY_CTRL },
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{ TTYC_KCUB1, NULL, KEYC_LEFT, TTYKEY_CTRL },
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{ TTYC_KCUF1, NULL, KEYC_RIGHT, TTYKEY_CTRL },
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/*
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* Numeric keypad. termcap and terminfo are totally confusing for this.
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* There are definitions for some keypad keys and for function keys,
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* but these seem to now be used for the real function keys rather than
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* for the keypad keys in application mode (which is different from
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* what it says in the termcap file). So, we just hardcode the vt100
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* escape sequences here and always put the terminal into keypad_xmit
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* mode. Translation of numbers mode/applications mode is done in
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* input-keys.c.
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*/
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{ 0, "\033Oo", KEYC_KP0_1, TTYKEY_RAW },
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{ 0, "\033Oj", KEYC_KP0_2, TTYKEY_RAW },
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{ 0, "\033Om", KEYC_KP0_3, TTYKEY_RAW },
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{ 0, "\033Ow", KEYC_KP1_0, TTYKEY_RAW },
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{ 0, "\033Ox", KEYC_KP1_1, TTYKEY_RAW },
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{ 0, "\033Oy", KEYC_KP1_2, TTYKEY_RAW },
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{ 0, "\033Ok", KEYC_KP1_3, TTYKEY_RAW },
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{ 0, "\033Ot", KEYC_KP2_0, TTYKEY_RAW },
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{ 0, "\033Ou", KEYC_KP2_1, TTYKEY_RAW },
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{ 0, "\033Ov", KEYC_KP2_2, TTYKEY_RAW },
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{ 0, "\033Oq", KEYC_KP3_0, TTYKEY_RAW },
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{ 0, "\033Or", KEYC_KP3_1, TTYKEY_RAW },
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{ 0, "\033Os", KEYC_KP3_2, TTYKEY_RAW },
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{ 0, "\033OM", KEYC_KP3_3, TTYKEY_RAW },
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{ 0, "\033Op", KEYC_KP4_0, TTYKEY_RAW },
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{ 0, "\033On", KEYC_KP4_2, TTYKEY_RAW },
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};
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RB_GENERATE(tty_keys, tty_key, entry, tty_keys_cmp);
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struct tty_key *tty_keys_find(struct tty *, char *, size_t, size_t *);
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int
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tty_keys_cmp(struct tty_key *k1, struct tty_key *k2)
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{
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return (strcmp(k1->string, k2->string));
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}
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void
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tty_keys_add(struct tty *tty, const char *s, int key, int flags)
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{
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struct tty_key *tk, tl;
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tl.string = s;
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if ((tk = RB_FIND(tty_keys, &tty->ktree, &tl)) != NULL) {
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log_debug("already key matching: %s (old %x, new %x)",
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tk->string, tk->key, key);
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return;
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}
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tk = xmalloc(sizeof *tk);
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tk->string = xstrdup(s);
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tk->key = key;
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tk->flags = flags;
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if (strlen(tk->string) > tty->ksize)
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tty->ksize = strlen(tk->string);
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RB_INSERT(tty_keys, &tty->ktree, tk);
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log_debug("new key %x: size now %zu (%s)", key, tty->ksize, tk->string);
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}
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void
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tty_keys_init(struct tty *tty)
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{
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struct tty_key_ent *tke;
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u_int i;
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const char *s;
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char tmp[64];
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RB_INIT(&tty->ktree);
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tty->ksize = 0;
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for (i = 0; i < nitems(tty_keys); i++) {
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tke = &tty_keys[i];
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if (tke->flags & TTYKEY_RAW)
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s = tke->string;
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else {
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if (!tty_term_has(tty->term, tke->code))
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continue;
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s = tty_term_string(tty->term, tke->code);
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if (s[0] != '\033' || s[1] == '\0')
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continue;
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}
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tty_keys_add(tty, s + 1, tke->key, tke->flags);
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if (tke->flags & TTYKEY_CTRL) {
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if (strlcpy(tmp, s, sizeof tmp) >= sizeof tmp)
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continue;
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tmp[strlen(tmp) - 1] ^= 0x20;
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tty_keys_add(tty, tmp + 1, KEYC_ADDCTL(tke->key), 0);
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}
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}
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}
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void
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tty_keys_free(struct tty *tty)
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{
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struct tty_key *tk;
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while (!RB_EMPTY(&tty->ktree)) {
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tk = RB_ROOT(&tty->ktree);
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RB_REMOVE(tty_keys, &tty->ktree, tk);
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xfree(tk->string);
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xfree(tk);
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}
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}
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struct tty_key *
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tty_keys_find(struct tty *tty, char *buf, size_t len, size_t *size)
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{
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struct tty_key *tk, tl;
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char *s;
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if (len == 0)
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return (NULL);
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s = xmalloc(tty->ksize + 1);
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for (*size = tty->ksize; (*size) > 0; (*size)--) {
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if ((*size) > len)
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continue;
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memcpy(s, buf, *size);
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s[*size] = '\0';
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log_debug2("looking for key: %s", s);
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tl.string = s;
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tk = RB_FIND(tty_keys, &tty->ktree, &tl);
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if (tk != NULL) {
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log_debug2("got key: 0x%x", tk->key);
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xfree(s);
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return (tk);
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}
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}
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xfree(s);
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return (NULL);
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}
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int
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tty_keys_next(struct tty *tty, int *key, u_char *mouse)
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{
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struct tty_key *tk;
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struct timeval tv;
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char *buf;
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size_t len, size;
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buf = BUFFER_OUT(tty->in);
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len = BUFFER_USED(tty->in);
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if (len == 0)
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return (1);
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log_debug("keys are %zu (%.*s)", len, (int) len, buf);
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/* If a normal key, return it. */
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if (*buf != '\033') {
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*key = buffer_read8(tty->in);
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goto found;
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}
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/* Look for matching key string and return if found. */
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tk = tty_keys_find(tty, buf + 1, len - 1, &size);
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if (tk != NULL) {
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buffer_remove(tty->in, size + 1);
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*key = tk->key;
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goto found;
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}
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/* Not found. Is this a mouse key press? */
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*key = tty_keys_parse_mouse(tty, buf, len, &size, mouse);
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if (*key != KEYC_NONE) {
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buffer_remove(tty->in, size);
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goto found;
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}
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/* Not found. Try to parse xterm-type arguments. */
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*key = tty_keys_parse_xterm(tty, buf, len, &size);
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if (*key != KEYC_NONE) {
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buffer_remove(tty->in, size);
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goto found;
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}
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/* Escape but no key string. If the timer isn't started, start it. */
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if (!(tty->flags & TTY_ESCAPE)) {
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tv.tv_sec = 0;
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tv.tv_usec = ESCAPE_PERIOD * 1000L;
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if (gettimeofday(&tty->key_timer, NULL) != 0)
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fatal("gettimeofday");
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timeradd(&tty->key_timer, &tv, &tty->key_timer);
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tty->flags |= TTY_ESCAPE;
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return (1);
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}
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/* Skip the escape. */
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buf++;
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len--;
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/* Is there a normal key following? */
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if (len != 0 && *buf != '\033') {
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buffer_remove(tty->in, 1);
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*key = KEYC_ADDESC(buffer_read8(tty->in));
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goto found;
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}
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/* Or a key string? */
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if (len > 1) {
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tk = tty_keys_find(tty, buf + 1, len - 1, &size);
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if (tk != NULL) {
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buffer_remove(tty->in, size + 2);
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*key = KEYC_ADDESC(tk->key);
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goto found;
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}
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}
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/* If the timer hasn't expired, keep waiting. */
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if (gettimeofday(&tv, NULL) != 0)
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fatal("gettimeofday");
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if (timercmp(&tty->key_timer, &tv, >))
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return (1);
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/* Give up and return the escape. */
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buffer_remove(tty->in, 1);
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*key = '\033';
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found:
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tty->flags &= ~TTY_ESCAPE;
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return (0);
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}
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int
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tty_keys_parse_mouse(
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unused struct tty *tty, char *buf, size_t len, size_t *size, u_char *mouse)
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{
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/*
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* Mouse sequences are \033[M followed by three characters indicating
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* buttons, X and Y, all based at 32 with 1,1 top-left.
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*/
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log_debug("mouse input is: %.*s", (int) len, buf);
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if (len != 6 || memcmp(buf, "\033[M", 3) != 0)
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return (KEYC_NONE);
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*size = 6;
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if (buf[3] < 32 || buf[4] < 33 || buf[5] < 33)
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return (KEYC_NONE);
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mouse[0] = buf[3] - 32;
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mouse[1] = buf[4] - 33;
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mouse[2] = buf[5] - 33;
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return (KEYC_MOUSE);
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}
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int
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tty_keys_parse_xterm(struct tty *tty, char *buf, size_t len, size_t *size)
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{
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struct tty_key *tk;
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char tmp[5];
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size_t tmplen;
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int key;
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/*
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* xterm sequences with modifier keys are of the form:
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*
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* ^[[1;xD becomes ^[[D
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* ^[[5;x~ becomes ^[[5~
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*
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* This function is a bit of a hack. Need to figure out what exact
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* format and meaning xterm outputs and fix it. XXX
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*/
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log_debug("xterm input is: %.*s", (int) len, buf);
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if (len != 6 || memcmp(buf, "\033[1;", 4) != 0)
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return (KEYC_NONE);
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*size = 6;
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tmplen = 0;
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tmp[tmplen++] = '[';
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if (buf[5] == '~') {
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tmp[tmplen++] = buf[2];
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tmp[tmplen++] = '~';
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} else
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tmp[tmplen++] = buf[5];
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log_debug("xterm output is: %.*s", (int) tmplen, tmp);
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tk = tty_keys_find(tty, tmp, tmplen, size);
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if (tk == NULL)
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return (KEYC_NONE);
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key = tk->key;
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switch (buf[4]) {
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case '8':
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key = KEYC_ADDSFT(key);
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key = KEYC_ADDESC(key);
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key = KEYC_ADDCTL(key);
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break;
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case '7':
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key = KEYC_ADDESC(key);
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key = KEYC_ADDCTL(key);
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break;
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case '6':
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key = KEYC_ADDSFT(key);
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key = KEYC_ADDCTL(key);
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break;
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case '5':
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key = KEYC_ADDCTL(key);
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break;
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case '4':
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key = KEYC_ADDSFT(key);
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key = KEYC_ADDESC(key);
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break;
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case '3':
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key = KEYC_ADDESC(key);
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break;
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case '2':
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key = KEYC_ADDSFT(key);
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break;
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}
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*size = 6;
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return (key);
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}
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