/* Convert a key code into string format, with prefix if necessary. */
const char *
key_string_lookup_key(key_code key)
{
static char out[24];
char tmp[8];
u_int i;
struct utf8_data ud;
*out = '\0';
/* Handle no key. */
if (key == KEYC_NONE)
return ("None");
/* Handle special keys. */
if (key == KEYC_UNKNOWN)
return ("Unknown");
if (key == KEYC_MOUSE)
return ("Mouse");
/*
* Special case: display C-@ as C-Space. Could do this below in
* the (key >= 0 && key <= 32), but this way we let it be found
* in key_string_table, for the unlikely chance that we might
* change its name.
*/
if ((key & KEYC_MASK_KEY) == 0)
key = ' ' | KEYC_CTRL | (key & KEYC_MASK_MOD);
/* Fill in the modifiers. */
if (key & KEYC_CTRL)
strlcat(out, "C-", sizeof out);
if (key & KEYC_ESCAPE)
strlcat(out, "M-", sizeof out);
if (key & KEYC_SHIFT)
strlcat(out, "S-", sizeof out);
key &= KEYC_MASK_KEY;
/* Try the key against the string table. */
for (i = 0; i < nitems(key_string_table); i++) {
if (key == key_string_table[i].key)
break;
}
if (i != nitems(key_string_table)) {
strlcat(out, key_string_table[i].string, sizeof out);
return (out);
}
/* Is this a UTF-8 key? */
if (key > 127 && key < KEYC_BASE) {
if (utf8_split(key, &ud) == UTF8_DONE) {
memcpy(out, ud.data, ud.size);
out[ud.size] = '\0';
return (out);
}
}
/* Invalid keys are errors. */
if (key == 127 || key > 255) {
snprintf(out, sizeof out, "Invalid#%llx", key);
return (out);
}
/* Check for standard or control key. */
if (key <= 32) {
if (key == 0 || key > 26)
xsnprintf(tmp, sizeof tmp, "C-%c", (int)(64 + key));
else
xsnprintf(tmp, sizeof tmp, "C-%c", (int)(96 + key));
} else if (key >= 32 && key <= 126) {
tmp[0] = key;
tmp[1] = '\0';
} else if (key >= 128)
xsnprintf(tmp, sizeof tmp, "\\%llo", key);
strlcat(out, tmp, sizeof out);
return (out);
}
/* Translate a key code into an output key sequence. */
void
input_key(struct window_pane *wp, key_code key, struct mouse_event *m)
{
const struct input_key_ent *ike;
u_int i;
size_t dlen;
char *out;
key_code justkey;
struct utf8_data ud;
log_debug("writing key 0x%llx (%s) to %%%u", key,
key_string_lookup_key(key), wp->id);
/* If this is a mouse key, pass off to mouse function. */
if (KEYC_IS_MOUSE(key)) {
if (m != NULL && m->wp != -1 && (u_int)m->wp == wp->id)
input_key_mouse(wp, m);
return;
}
/*
* If this is a normal 7-bit key, just send it, with a leading escape
* if necessary. If it is a UTF-8 key, split it and send it.
*/
justkey = (key & ~KEYC_ESCAPE);
if (justkey <= 0x7f) {
if (key & KEYC_ESCAPE)
bufferevent_write(wp->event, "\033", 1);
ud.data[0] = justkey;
bufferevent_write(wp->event, &ud.data[0], 1);
return;
}
if (justkey > 0x7f && justkey < KEYC_BASE) {
if (utf8_split(justkey, &ud) != UTF8_DONE)
return;
if (key & KEYC_ESCAPE)
bufferevent_write(wp->event, "\033", 1);
bufferevent_write(wp->event, ud.data, ud.size);
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_debug("key 0x%llx missing", key);
return;
}
dlen = strlen(ike->data);
log_debug("found key 0x%llx: \"%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);
}
