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d52f579fd5
xterm-keys by default, generates \033[1;3A instead of \033\033[OA. Unfortunately this confuses vi, which doesn't understand xterm keys and now sees Escape+Up pressed within escape-time as Escape followed by A. The issue doesn't happen in xterm itself because it gets the keys from X and can distinguish between a genuine M-Up and Escape+Up. Because xterm can, tmux can too: xterm will give us \033[1;3A (that is, kUP3) for a real M-Up and \033\033OA for Escape+Up - in fact, we can be sure any \033 preceding an xterm key is a real Escape key press because Meta would be part of the xterm key instead of a separate \033. So change tmux to recognise both sequences as M-Up for its own purposes, but generate the xterm version of M-Up only if it originally received the xterm version from the terminal. This means we will return to sending \033\033OA instead of the xterm key for terminals that do not support xterm keys themselves, but there is no practical way around this because they do not allow us to distinguish between Escape+Up and M-Up. xterm style escape sequences are now the de facto standard for these keys in any case. Problem reported by jsing@ and subsequently by Cecile Tonglet in GitHub issue 907.
306 lines
8.9 KiB
C
306 lines
8.9 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
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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 <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tmux.h"
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/*
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* This file is rather misleadingly named, it contains the code which takes a
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* key code and translates it into something suitable to be sent to the
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* application running in a pane (similar to input.c does in the other
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* direction with output).
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*/
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static void input_key_mouse(struct window_pane *, struct mouse_event *);
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struct input_key_ent {
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key_code key;
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const char *data;
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int flags;
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#define INPUTKEY_KEYPAD 0x1 /* keypad key */
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#define INPUTKEY_CURSOR 0x2 /* cursor key */
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};
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static const struct input_key_ent input_keys[] = {
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/* Backspace key. */
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{ KEYC_BSPACE, "\177", 0 },
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/* Function keys. */
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{ KEYC_F1, "\033OP", 0 },
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{ KEYC_F2, "\033OQ", 0 },
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{ KEYC_F3, "\033OR", 0 },
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{ KEYC_F4, "\033OS", 0 },
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{ KEYC_F5, "\033[15~", 0 },
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{ KEYC_F6, "\033[17~", 0 },
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{ KEYC_F7, "\033[18~", 0 },
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{ KEYC_F8, "\033[19~", 0 },
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{ KEYC_F9, "\033[20~", 0 },
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{ KEYC_F10, "\033[21~", 0 },
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{ KEYC_F11, "\033[23~", 0 },
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{ KEYC_F12, "\033[24~", 0 },
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{ KEYC_F1|KEYC_SHIFT, "\033[25~", 0 },
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{ KEYC_F2|KEYC_SHIFT, "\033[26~", 0 },
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{ KEYC_F3|KEYC_SHIFT, "\033[28~", 0 },
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{ KEYC_F4|KEYC_SHIFT, "\033[29~", 0 },
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{ KEYC_F5|KEYC_SHIFT, "\033[31~", 0 },
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{ KEYC_F6|KEYC_SHIFT, "\033[32~", 0 },
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{ KEYC_F7|KEYC_SHIFT, "\033[33~", 0 },
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{ KEYC_F8|KEYC_SHIFT, "\033[34~", 0 },
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{ KEYC_IC, "\033[2~", 0 },
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{ KEYC_DC, "\033[3~", 0 },
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{ KEYC_HOME, "\033[1~", 0 },
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{ KEYC_END, "\033[4~", 0 },
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{ KEYC_NPAGE, "\033[6~", 0 },
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{ KEYC_PPAGE, "\033[5~", 0 },
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{ KEYC_BTAB, "\033[Z", 0 },
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/*
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* Arrow keys. Cursor versions must come first. The codes are toggled
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* between CSI and SS3 versions when ctrl is pressed.
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*/
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{ KEYC_UP|KEYC_CTRL, "\033[A", INPUTKEY_CURSOR },
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{ KEYC_DOWN|KEYC_CTRL, "\033[B", INPUTKEY_CURSOR },
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{ KEYC_RIGHT|KEYC_CTRL, "\033[C", INPUTKEY_CURSOR },
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{ KEYC_LEFT|KEYC_CTRL, "\033[D", INPUTKEY_CURSOR },
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{ KEYC_UP, "\033OA", INPUTKEY_CURSOR },
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{ KEYC_DOWN, "\033OB", INPUTKEY_CURSOR },
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{ KEYC_RIGHT, "\033OC", INPUTKEY_CURSOR },
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{ KEYC_LEFT, "\033OD", INPUTKEY_CURSOR },
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{ KEYC_UP|KEYC_CTRL, "\033OA", 0 },
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{ KEYC_DOWN|KEYC_CTRL, "\033OB", 0 },
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{ KEYC_RIGHT|KEYC_CTRL, "\033OC", 0 },
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{ KEYC_LEFT|KEYC_CTRL, "\033OD", 0 },
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{ KEYC_UP, "\033[A", 0 },
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{ KEYC_DOWN, "\033[B", 0 },
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{ KEYC_RIGHT, "\033[C", 0 },
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{ KEYC_LEFT, "\033[D", 0 },
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/* Keypad keys. Keypad versions must come first. */
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{ KEYC_KP_SLASH, "\033Oo", INPUTKEY_KEYPAD },
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{ KEYC_KP_STAR, "\033Oj", INPUTKEY_KEYPAD },
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{ KEYC_KP_MINUS, "\033Om", INPUTKEY_KEYPAD },
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{ KEYC_KP_SEVEN, "\033Ow", INPUTKEY_KEYPAD },
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{ KEYC_KP_EIGHT, "\033Ox", INPUTKEY_KEYPAD },
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{ KEYC_KP_NINE, "\033Oy", INPUTKEY_KEYPAD },
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{ KEYC_KP_PLUS, "\033Ok", INPUTKEY_KEYPAD },
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{ KEYC_KP_FOUR, "\033Ot", INPUTKEY_KEYPAD },
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{ KEYC_KP_FIVE, "\033Ou", INPUTKEY_KEYPAD },
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{ KEYC_KP_SIX, "\033Ov", INPUTKEY_KEYPAD },
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{ KEYC_KP_ONE, "\033Oq", INPUTKEY_KEYPAD },
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{ KEYC_KP_TWO, "\033Or", INPUTKEY_KEYPAD },
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{ KEYC_KP_THREE, "\033Os", INPUTKEY_KEYPAD },
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{ KEYC_KP_ENTER, "\033OM", INPUTKEY_KEYPAD },
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{ KEYC_KP_ZERO, "\033Op", INPUTKEY_KEYPAD },
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{ KEYC_KP_PERIOD, "\033On", INPUTKEY_KEYPAD },
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{ KEYC_KP_SLASH, "/", 0 },
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{ KEYC_KP_STAR, "*", 0 },
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{ KEYC_KP_MINUS, "-", 0 },
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{ KEYC_KP_SEVEN, "7", 0 },
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{ KEYC_KP_EIGHT, "8", 0 },
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{ KEYC_KP_NINE, "9", 0 },
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{ KEYC_KP_PLUS, "+", 0 },
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{ KEYC_KP_FOUR, "4", 0 },
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{ KEYC_KP_FIVE, "5", 0 },
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{ KEYC_KP_SIX, "6", 0 },
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{ KEYC_KP_ONE, "1", 0 },
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{ KEYC_KP_TWO, "2", 0 },
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{ KEYC_KP_THREE, "3", 0 },
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{ KEYC_KP_ENTER, "\n", 0 },
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{ KEYC_KP_ZERO, "0", 0 },
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{ KEYC_KP_PERIOD, ".", 0 },
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};
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/* Split a character into two UTF-8 bytes. */
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static size_t
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input_split2(u_int c, u_char *dst)
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{
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if (c > 0x7f) {
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dst[0] = (c >> 6) | 0xc0;
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dst[1] = (c & 0x3f) | 0x80;
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return (2);
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}
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dst[0] = c;
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return (1);
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}
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/* Translate a key code into an output key sequence. */
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void
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input_key(struct window_pane *wp, key_code key, struct mouse_event *m)
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{
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const struct input_key_ent *ike;
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u_int i;
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size_t dlen;
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char *out;
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key_code justkey;
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struct utf8_data ud;
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log_debug("writing key 0x%llx (%s) to %%%u", key,
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key_string_lookup_key(key), wp->id);
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/* If this is a mouse key, pass off to mouse function. */
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if (KEYC_IS_MOUSE(key)) {
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if (m != NULL && m->wp != -1 && (u_int)m->wp == wp->id)
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input_key_mouse(wp, m);
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return;
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}
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/*
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* If this is a normal 7-bit key, just send it, with a leading escape
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* if necessary. If it is a UTF-8 key, split it and send it.
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*/
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justkey = (key & ~KEYC_ESCAPE);
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if (justkey <= 0x7f) {
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if (key & KEYC_ESCAPE)
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bufferevent_write(wp->event, "\033", 1);
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ud.data[0] = justkey;
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bufferevent_write(wp->event, &ud.data[0], 1);
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return;
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}
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if (justkey > 0x7f && justkey < KEYC_BASE) {
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if (utf8_split(justkey, &ud) != UTF8_DONE)
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return;
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if (key & KEYC_ESCAPE)
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bufferevent_write(wp->event, "\033", 1);
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bufferevent_write(wp->event, ud.data, ud.size);
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return;
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}
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/*
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* Then try to look this up as an xterm key, if the flag to output them
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* is set.
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*/
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if (options_get_number(wp->window->options, "xterm-keys")) {
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if ((out = xterm_keys_lookup(key)) != NULL) {
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bufferevent_write(wp->event, out, strlen(out));
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free(out);
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return;
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}
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}
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key &= ~KEYC_XTERM;
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/* Otherwise look the key up in the table. */
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for (i = 0; i < nitems(input_keys); i++) {
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ike = &input_keys[i];
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if ((ike->flags & INPUTKEY_KEYPAD) &&
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!(wp->screen->mode & MODE_KKEYPAD))
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continue;
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if ((ike->flags & INPUTKEY_CURSOR) &&
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!(wp->screen->mode & MODE_KCURSOR))
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continue;
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if ((key & KEYC_ESCAPE) && (ike->key | KEYC_ESCAPE) == key)
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break;
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if (ike->key == key)
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break;
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}
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if (i == nitems(input_keys)) {
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log_debug("key 0x%llx missing", key);
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return;
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}
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dlen = strlen(ike->data);
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log_debug("found key 0x%llx: \"%s\"", key, ike->data);
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/* Prefix a \033 for escape. */
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if (key & KEYC_ESCAPE)
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bufferevent_write(wp->event, "\033", 1);
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bufferevent_write(wp->event, ike->data, dlen);
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}
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/* Translate mouse and output. */
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static void
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input_key_mouse(struct window_pane *wp, struct mouse_event *m)
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{
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struct screen *s = wp->screen;
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int mode = s->mode;
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char buf[40];
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size_t len;
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u_int x, y;
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if ((mode & ALL_MOUSE_MODES) == 0)
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return;
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if (!window_pane_visible(wp))
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return;
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if (cmd_mouse_at(wp, m, &x, &y, 0) != 0)
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return;
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/* If this pane is not in button or all mode, discard motion events. */
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if (MOUSE_DRAG(m->b) &&
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(mode & (MODE_MOUSE_BUTTON|MODE_MOUSE_ALL)) == 0)
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return;
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/*
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* If this event is a release event and not in all mode, discard it.
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* In SGR mode we can tell absolutely because a release is normally
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* shown by the last character. Without SGR, we check if the last
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* buttons was also a release.
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*/
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if (m->sgr_type != ' ') {
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if (MOUSE_DRAG(m->sgr_b) &&
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MOUSE_BUTTONS(m->sgr_b) == 3 &&
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(~mode & MODE_MOUSE_ALL))
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return;
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} else {
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if (MOUSE_DRAG(m->b) &&
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MOUSE_BUTTONS(m->b) == 3 &&
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MOUSE_BUTTONS(m->lb) == 3 &&
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(~mode & MODE_MOUSE_ALL))
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return;
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}
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/*
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* Use the SGR (1006) extension only if the application requested it
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* and the underlying terminal also sent the event in this format (this
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* is because an old style mouse release event cannot be converted into
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* the new SGR format, since the released button is unknown). Otherwise
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* pretend that tmux doesn't speak this extension, and fall back to the
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* UTF-8 (1005) extension if the application requested, or to the
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* legacy format.
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*/
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if (m->sgr_type != ' ' && (s->mode & MODE_MOUSE_SGR)) {
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len = xsnprintf(buf, sizeof buf, "\033[<%u;%u;%u%c",
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m->sgr_b, x + 1, y + 1, m->sgr_type);
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} else if (s->mode & MODE_MOUSE_UTF8) {
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if (m->b > 0x7ff - 32 || x > 0x7ff - 33 || y > 0x7ff - 33)
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return;
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len = xsnprintf(buf, sizeof buf, "\033[M");
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len += input_split2(m->b + 32, &buf[len]);
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len += input_split2(x + 33, &buf[len]);
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len += input_split2(y + 33, &buf[len]);
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} else {
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if (m->b > 223)
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return;
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len = xsnprintf(buf, sizeof buf, "\033[M");
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buf[len++] = m->b + 32;
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buf[len++] = x + 33;
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buf[len++] = y + 33;
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}
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log_debug("writing mouse %.*s to %%%u", (int)len, buf, wp->id);
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bufferevent_write(wp->event, buf, len);
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}
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