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/* $Id$ */

/*
* Copyright (c) 2007 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 <stdlib.h>
#include <string.h>

#include "tmux.h"

/*
* This file is rather misleadingly named, it contains the code which takes a
* key code and translates it into something suitable to be sent to the
* application running in a pane (similar to input.c does in the other
* direction with output).
*/

struct input_key_ent {
int key;
const char *data;

int flags;
#define INPUTKEY_KEYPAD 0x1 /* keypad key */
#define INPUTKEY_CURSOR 0x2 /* cursor key */
};

const struct input_key_ent input_keys[] = {
/* Backspace key. */
{ KEYC_BSPACE, "\177", 0 },

/* Function keys. */
{ KEYC_F1, "\033OP", 0 },
{ KEYC_F2, "\033OQ", 0 },
{ KEYC_F3, "\033OR", 0 },
{ KEYC_F4, "\033OS", 0 },
{ KEYC_F5, "\033[15~", 0 },
{ KEYC_F6, "\033[17~", 0 },
{ KEYC_F7, "\033[18~", 0 },
{ KEYC_F8, "\033[19~", 0 },
{ KEYC_F9, "\033[20~", 0 },
{ KEYC_F10, "\033[21~", 0 },
{ KEYC_F11, "\033[23~", 0 },
{ KEYC_F12, "\033[24~", 0 },
{ KEYC_F13, "\033[25~", 0 },
{ KEYC_F14, "\033[26~", 0 },
{ KEYC_F15, "\033[28~", 0 },
{ KEYC_F16, "\033[29~", 0 },
{ KEYC_F17, "\033[31~", 0 },
{ KEYC_F18, "\033[32~", 0 },
{ KEYC_F19, "\033[33~", 0 },
{ KEYC_F20, "\033[34~", 0 },
{ KEYC_IC, "\033[2~", 0 },
{ KEYC_DC, "\033[3~", 0 },
{ KEYC_HOME, "\033[1~", 0 },
{ KEYC_END, "\033[4~", 0 },
{ KEYC_NPAGE, "\033[6~", 0 },
{ KEYC_PPAGE, "\033[5~", 0 },
{ KEYC_BTAB, "\033[Z", 0 },

/*
* Arrow keys. Cursor versions must come first. The codes are toggled
* between CSI and SS3 versions when ctrl is pressed.
*/
{ KEYC_UP|KEYC_CTRL, "\033[A", INPUTKEY_CURSOR },
{ KEYC_DOWN|KEYC_CTRL, "\033[B", INPUTKEY_CURSOR },
{ KEYC_RIGHT|KEYC_CTRL, "\033[C", INPUTKEY_CURSOR },
{ KEYC_LEFT|KEYC_CTRL, "\033[D", INPUTKEY_CURSOR },

{ KEYC_UP, "\033OA", INPUTKEY_CURSOR },
{ KEYC_DOWN, "\033OB", INPUTKEY_CURSOR },
{ KEYC_RIGHT, "\033OC", INPUTKEY_CURSOR },
{ KEYC_LEFT, "\033OD", INPUTKEY_CURSOR },

{ KEYC_UP|KEYC_CTRL, "\033OA", 0 },
{ KEYC_DOWN|KEYC_CTRL, "\033OB", 0 },
{ KEYC_RIGHT|KEYC_CTRL, "\033OC", 0 },
{ KEYC_LEFT|KEYC_CTRL, "\033OD", 0 },

{ KEYC_UP, "\033[A", 0 },
{ KEYC_DOWN, "\033[B", 0 },
{ KEYC_RIGHT, "\033[C", 0 },
{ KEYC_LEFT, "\033[D", 0 },

/* Keypad keys. Keypad versions must come first. */
{ KEYC_KP_SLASH, "\033Oo", INPUTKEY_KEYPAD },
{ KEYC_KP_STAR, "\033Oj", INPUTKEY_KEYPAD },
{ KEYC_KP_MINUS, "\033Om", INPUTKEY_KEYPAD },
{ KEYC_KP_SEVEN, "\033Ow", INPUTKEY_KEYPAD },
{ KEYC_KP_EIGHT, "\033Ox", INPUTKEY_KEYPAD },
{ KEYC_KP_NINE, "\033Oy", INPUTKEY_KEYPAD },
{ KEYC_KP_PLUS, "\033Ok", INPUTKEY_KEYPAD },
{ KEYC_KP_FOUR, "\033Ot", INPUTKEY_KEYPAD },
{ KEYC_KP_FIVE, "\033Ou", INPUTKEY_KEYPAD },
{ KEYC_KP_SIX, "\033Ov", INPUTKEY_KEYPAD },
{ KEYC_KP_ONE, "\033Oq", INPUTKEY_KEYPAD },
{ KEYC_KP_TWO, "\033Or", INPUTKEY_KEYPAD },
{ KEYC_KP_THREE, "\033Os", INPUTKEY_KEYPAD },
{ KEYC_KP_ENTER, "\033OM", INPUTKEY_KEYPAD },
{ KEYC_KP_ZERO, "\033Op", INPUTKEY_KEYPAD },
{ KEYC_KP_PERIOD, "\033On", INPUTKEY_KEYPAD },

{ KEYC_KP_SLASH, "/", 0 },
{ KEYC_KP_STAR, "*", 0 },
{ KEYC_KP_MINUS, "-", 0 },
{ KEYC_KP_SEVEN, "7", 0 },
{ KEYC_KP_EIGHT, "8", 0 },
{ KEYC_KP_NINE, "9", 0 },
{ KEYC_KP_PLUS, "+", 0 },
{ KEYC_KP_FOUR, "4", 0 },
{ KEYC_KP_FIVE, "5", 0 },
{ KEYC_KP_SIX, "6", 0 },
{ KEYC_KP_ONE, "1", 0 },
{ KEYC_KP_TWO, "2", 0 },
{ KEYC_KP_THREE, "3", 0 },
{ KEYC_KP_ENTER, "\n", 0 },
{ KEYC_KP_ZERO, "0", 0 },
{ KEYC_KP_PERIOD, ".", 0 },
};

/* Translate a key code into an output key sequence. */
void
input_key(struct window_pane *wp, int key)
{
const struct input_key_ent *ike;
u_int i;
size_t dlen;
char *out;
u_char ch;

log_debug2("writing key 0x%x", key);

/*
* If this is a normal 7-bit key, just send it, with a leading escape
* if necessary.
*/
if (key != KEYC_NONE && (key & ~KEYC_ESCAPE) < 0x100) {
if (key & KEYC_ESCAPE)
bufferevent_write(wp->event, "\033", 1);
ch = key & ~KEYC_ESCAPE;
bufferevent_write(wp->event, &ch, 1);
return;
}

/*
* Then try to look this up as an xterm key, if the flag to output them
* is set.
*/
if (options_get_number(&wp->window->options, "xterm-keys")) {
if ((out = xterm_keys_lookup(key)) != NULL) {
bufferevent_write(wp->event, out, strlen(out));
free(out);
return;
}
}

/* Otherwise look the key up in the table. */
for (i = 0; i < nitems(input_keys); i++) {
ike = &input_keys[i];

if ((ike->flags & INPUTKEY_KEYPAD) &&
!(wp->screen->mode & MODE_KKEYPAD))
continue;
if ((ike->flags & INPUTKEY_CURSOR) &&
!(wp->screen->mode & MODE_KCURSOR))
continue;

if ((key & KEYC_ESCAPE) && (ike->key | KEYC_ESCAPE) == key)
break;
if (ike->key == key)
break;
}
if (i == nitems(input_keys)) {
log_debug2("key 0x%x missing", key);
return;
}
dlen = strlen(ike->data);
log_debug2("found key 0x%x: \"%s\"", key, ike->data);

/* Prefix a \033 for escape. */
if (key & KEYC_ESCAPE)
bufferevent_write(wp->event, "\033", 1);
bufferevent_write(wp->event, ike->data, dlen);
}

/* Translate mouse and output. */
void
input_mouse(struct window_pane *wp, struct mouse_event *m)
{
char buf[10];
size_t len;

if (wp->screen->mode & ALL_MOUSE_MODES) {
if (wp->screen->mode & MODE_MOUSE_UTF8) {
len = xsnprintf(buf, sizeof buf, "\033[M");
len += utf8_split2(m->b + 32, &buf[len]);
len += utf8_split2(m->x + 33, &buf[len]);
len += utf8_split2(m->y + 33, &buf[len]);
} else {
if (m->b > 223 || m->x >= 222 || m->y > 222)
return;
len = xsnprintf(buf, sizeof buf, "\033[M");
buf[len++] = m->b + 32;
buf[len++] = m->x + 33;
buf[len++] = m->y + 33;
}
bufferevent_write(wp->event, buf, len);
return;
}

if ((m->b & 3) != 1 &&
options_get_number(&wp->window->options, "mode-mouse") == 1) {
if (window_pane_set_mode(wp, &window_copy_mode) == 0) {
window_copy_init_from_pane(wp);
if (wp->mode->mouse != NULL)
wp->mode->mouse(wp, NULL, m);
}
return;
}
}
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