/*
* Process at least one key in the buffer and invoke tty->key_callback. Return
* 0 if there are no further keys, or 1 if there could be more in the buffer.
*/
int
tty_keys_next(struct tty *tty)
{
struct tty_key *tk;
struct timeval tv;
const char *buf;
size_t len, size;
cc_t bspace;
int key, delay;
buf = EVBUFFER_DATA(tty->event->input);
len = EVBUFFER_LENGTH(tty->event->input);
if (len == 0)
return (0);
log_debug("keys are %zu (%.*s)", len, (int) len, buf);
/* If a normal key, return it. */
if (*buf != '\033') {
key = (u_char) *buf;
evbuffer_drain(tty->event->input, 1);
/*
* Check for backspace key using termios VERASE - the terminfo
* kbs entry is extremely unreliable, so cannot be safely
* used. termios should have a better idea.
*/
bspace = tty->tio.c_cc[VERASE];
if (bspace != _POSIX_VDISABLE && key == bspace)
key = KEYC_BSPACE;
goto handle_key;
}
/* Is this device attributes response? */
switch (tty_keys_device(tty, buf, len, &size)) {
case 0: /* yes */
evbuffer_drain(tty->event->input, size);
key = KEYC_NONE;
goto handle_key;
case -1: /* no, or not valid */
break;
case 1: /* partial */
goto partial_key;
}
/* Is this a mouse key press? */
switch (tty_keys_mouse(tty, buf, len, &size)) {
case 0: /* yes */
evbuffer_drain(tty->event->input, size);
key = KEYC_MOUSE;
goto handle_key;
case -1: /* no, or not valid */
break;
case 1: /* partial */
goto partial_key;
}
/* Try to parse a key with an xterm-style modifier. */
switch (xterm_keys_find(buf, len, &size, &key)) {
case 0: /* found */
evbuffer_drain(tty->event->input, size);
goto handle_key;
case -1: /* not found */
break;
case 1:
goto partial_key;
}
/* Look for matching key string and return if found. */
tk = tty_keys_find(tty, buf + 1, len - 1, &size);
if (tk != NULL) {
key = tk->key;
goto found_key;
}
/* Skip the escape. */
buf++;
len--;
/* Is there a normal key following? */
if (len != 0 && *buf != '\033') {
key = *buf | KEYC_ESCAPE;
evbuffer_drain(tty->event->input, 2);
goto handle_key;
}
/* Or a key string? */
if (len > 1) {
tk = tty_keys_find(tty, buf + 1, len - 1, &size);
if (tk != NULL) {
key = tk->key | KEYC_ESCAPE;
size++; /* include escape */
goto found_key;
}
}
/* Escape and then nothing useful - fall through. */
partial_key:
/*
* Escape but no key string. If have already seen an escape and the
* timer has expired, give up waiting and send the escape.
*/
if ((tty->flags & TTY_ESCAPE) &&
!evtimer_pending(&tty->key_timer, NULL)) {
evbuffer_drain(tty->event->input, 1);
key = '\033';
goto handle_key;
}
/* Fall through to start the timer. */
start_timer:
/* If already waiting for timer, do nothing. */
if (evtimer_pending(&tty->key_timer, NULL))
return (0);
/* Start the timer and wait for expiry or more data. */
delay = options_get_number(&global_options, "escape-time");
tv.tv_sec = delay / 1000;
tv.tv_usec = (delay % 1000) * 1000L;
if (event_initialized(&tty->key_timer))
evtimer_del(&tty->key_timer);
evtimer_set(&tty->key_timer, tty_keys_callback, tty);
evtimer_add(&tty->key_timer, &tv);
tty->flags |= TTY_ESCAPE;
return (0);
found_key:
if (tk->next != NULL) {
/* Partial key. Start the timer if not already expired. */
if (!(tty->flags & TTY_ESCAPE))
goto start_timer;
/* Otherwise, if no key, send the escape alone. */
if (tk->key == KEYC_NONE)
goto partial_key;
/* Or fall through to send the partial key found. */
}
evbuffer_drain(tty->event->input, size + 1);
goto handle_key;
handle_key:
if (event_initialized(&tty->key_timer))
evtimer_del(&tty->key_timer);
if (key != KEYC_NONE)
server_client_handle_key(tty->client, key);
tty->flags &= ~TTY_ESCAPE;
return (1);
}
/*
* Process at least one key in the buffer and invoke tty->key_callback. Return
* 0 if there are no further keys, or 1 if there could be more in the buffer.
*/
int
tty_keys_next(struct tty *tty)
{
struct tty_key *tk;
struct timeval tv;
const char *buf;
size_t len, size;
cc_t bspace;
int key, delay;
/* Get key buffer. */
buf = EVBUFFER_DATA(tty->event->input);
len = EVBUFFER_LENGTH(tty->event->input);
if (len == 0)
return (0);
log_debug("keys are %zu (%.*s)", len, (int) len, buf);
/* Is this device attributes response? */
switch (tty_keys_device(tty, buf, len, &size)) {
case 0: /* yes */
key = KEYC_NONE;
goto complete_key;
case -1: /* no, or not valid */
break;
case 1: /* partial */
goto partial_key;
}
/* Is this a mouse key press? */
switch (tty_keys_mouse(tty, buf, len, &size)) {
case 0: /* yes */
key = KEYC_MOUSE;
goto complete_key;
case -1: /* no, or not valid */
break;
case 1: /* partial */
goto partial_key;
}
/* Try to parse a key with an xterm-style modifier. */
switch (xterm_keys_find(buf, len, &size, &key)) {
case 0: /* found */
goto complete_key;
case -1: /* not found */
break;
case 1:
goto partial_key;
}
/* Look for matching key string and return if found. */
tk = tty_keys_find(tty, buf, len, &size);
if (tk != NULL) {
if (tk->next != NULL)
goto partial_key;
key = tk->key;
goto complete_key;
}
/* Is this a meta key? */
if (len >= 2 && buf[0] == '\033') {
if (buf[1] != '\033') {
key = buf[1] | KEYC_ESCAPE;
size = 2;
goto complete_key;
}
tk = tty_keys_find(tty, buf + 1, len - 1, &size);
if (tk != NULL) {
size++; /* include escape */
if (tk->next != NULL)
goto partial_key;
key = tk->key;
if (key != KEYC_NONE)
key |= KEYC_ESCAPE;
goto complete_key;
}
}
first_key:
/* No key found, take first. */
key = (u_char) *buf;
size = 1;
/*
* Check for backspace key using termios VERASE - the terminfo
* kbs entry is extremely unreliable, so cannot be safely
* used. termios should have a better idea.
*/
bspace = tty->tio.c_cc[VERASE];
if (bspace != _POSIX_VDISABLE && key == bspace)
key = KEYC_BSPACE;
goto complete_key;
partial_key:
log_debug("partial key %.*s", (int) len, buf);
/* If timer is going, check for expiration. */
if (tty->flags & TTY_TIMER) {
if (evtimer_initialized(&tty->key_timer) &&
!evtimer_pending(&tty->key_timer, NULL))
goto first_key;
return (0);
}
/* Get the time period. */
delay = options_get_number(&global_options, "escape-time");
tv.tv_sec = delay / 1000;
tv.tv_usec = (delay % 1000) * 1000L;
/* Start the timer. */
if (event_initialized(&tty->key_timer))
evtimer_del(&tty->key_timer);
evtimer_set(&tty->key_timer, tty_keys_callback, tty);
evtimer_add(&tty->key_timer, &tv);
tty->flags |= TTY_TIMER;
return (0);
complete_key:
log_debug("complete key %.*s %#x", (int) size, buf, key);
/* Remove data from buffer. */
evbuffer_drain(tty->event->input, size);
/* Remove key timer. */
if (event_initialized(&tty->key_timer))
evtimer_del(&tty->key_timer);
tty->flags &= ~TTY_TIMER;
/* Fire the key. */
if (key != KEYC_NONE)
server_client_handle_key(tty->client, key);
return (1);
}
/*
* Process at least one key in the buffer and invoke tty->key_callback. Return
* 0 if there are no further keys, or 1 if there could be more in the buffer.
*/
key_code
tty_keys_next(struct tty *tty)
{
struct tty_key *tk;
struct timeval tv;
const char *buf;
size_t len, size;
cc_t bspace;
int delay, expired = 0;
key_code key;
struct utf8_data ud;
enum utf8_state more;
u_int i;
/* Get key buffer. */
buf = EVBUFFER_DATA(tty->event->input);
len = EVBUFFER_LENGTH(tty->event->input);
if (len == 0)
return (0);
log_debug("keys are %zu (%.*s)", len, (int) len, buf);
/* Is this a mouse key press? */
switch (tty_keys_mouse(tty, buf, len, &size)) {
case 0: /* yes */
key = KEYC_MOUSE;
goto complete_key;
case -1: /* no, or not valid */
break;
case -2: /* yes, but we don't care. */
key = KEYC_MOUSE;
goto discard_key;
case 1: /* partial */
goto partial_key;
}
/* Look for matching key string and return if found. */
tk = tty_keys_find(tty, buf, len, &size);
if (tk != NULL) {
if (tk->next != NULL)
goto partial_key;
key = tk->key;
goto complete_key;
}
/* Try to parse a key with an xterm-style modifier. */
switch (xterm_keys_find(buf, len, &size, &key)) {
case 0: /* found */
goto complete_key;
case -1: /* not found */
break;
case 1:
goto partial_key;
}
first_key:
/* Is this a meta key? */
if (len >= 2 && buf[0] == '\033') {
if (buf[1] != '\033') {
key = buf[1] | KEYC_ESCAPE;
size = 2;
goto complete_key;
}
tk = tty_keys_find(tty, buf + 1, len - 1, &size);
if (tk != NULL && (!expired || tk->next == NULL)) {
size++; /* include escape */
if (tk->next != NULL)
goto partial_key;
key = tk->key;
if (key != KEYC_NONE)
key |= KEYC_ESCAPE;
goto complete_key;
}
}
/* Is this valid UTF-8? */
if ((more = utf8_open(&ud, (u_char)*buf) == UTF8_MORE)) {
size = ud.size;
if (len < size) {
if (expired)
goto discard_key;
goto partial_key;
}
for (i = 1; i < size; i++)
more = utf8_append(&ud, (u_char)buf[i]);
if (more != UTF8_DONE)
goto discard_key;
key = utf8_combine(&ud);
log_debug("UTF-8 key %.*s %#llx", (int)size, buf, key);
goto complete_key;
}
/* No key found, take first. */
key = (u_char)*buf;
size = 1;
/*
* Check for backspace key using termios VERASE - the terminfo
* kbs entry is extremely unreliable, so cannot be safely
* used. termios should have a better idea.
*/
bspace = tty->tio.c_cc[VERASE];
if (bspace != _POSIX_VDISABLE && key == bspace)
key = KEYC_BSPACE;
goto complete_key;
partial_key:
log_debug("partial key %.*s", (int) len, buf);
/* If timer is going, check for expiration. */
if (tty->flags & TTY_TIMER) {
if (evtimer_initialized(&tty->key_timer) &&
!evtimer_pending(&tty->key_timer, NULL)) {
expired = 1;
goto first_key;
}
return (0);
}
/* Get the time period. */
delay = options_get_number(global_options, "escape-time");
tv.tv_sec = delay / 1000;
tv.tv_usec = (delay % 1000) * 1000L;
/* Start the timer. */
if (event_initialized(&tty->key_timer))
evtimer_del(&tty->key_timer);
evtimer_set(&tty->key_timer, tty_keys_callback, tty);
evtimer_add(&tty->key_timer, &tv);
tty->flags |= TTY_TIMER;
return (0);
complete_key:
log_debug("complete key %.*s %#llx", (int)size, buf, key);
/* Remove data from buffer. */
evbuffer_drain(tty->event->input, size);
/* Remove key timer. */
if (event_initialized(&tty->key_timer))
evtimer_del(&tty->key_timer);
tty->flags &= ~TTY_TIMER;
/* Check for focus events. */
if (key == KEYC_FOCUS_OUT) {
tty->client->flags &= ~CLIENT_FOCUSED;
return (1);
} else if (key == KEYC_FOCUS_IN) {
tty->client->flags |= CLIENT_FOCUSED;
return (1);
}
/* Fire the key. */
if (key != KEYC_NONE)
server_client_handle_key(tty->client, key);
return (1);
discard_key:
log_debug("discard key %.*s %#llx", (int)size, buf, key);
/* Remove data from buffer. */
evbuffer_drain(tty->event->input, size);
return (1);
}
/*
* Process at least one key in the buffer and invoke tty->key_callback. Return
* 0 if there are no further keys, or 1 if there could be more in the buffer.
*/
key_code
tty_keys_next(struct tty *tty)
{
struct timeval tv;
const char *buf;
size_t len, size;
cc_t bspace;
int delay, expired = 0, n;
key_code key;
/* Get key buffer. */
buf = EVBUFFER_DATA(tty->event->input);
len = EVBUFFER_LENGTH(tty->event->input);
if (len == 0)
return (0);
log_debug("keys are %zu (%.*s)", len, (int)len, buf);
/* Is this a mouse key press? */
switch (tty_keys_mouse(tty, buf, len, &size)) {
case 0: /* yes */
key = KEYC_MOUSE;
goto complete_key;
case -1: /* no, or not valid */
break;
case -2: /* yes, but we don't care. */
key = KEYC_MOUSE;
goto discard_key;
case 1: /* partial */
goto partial_key;
}
first_key:
/* Handle keys starting with escape. */
if (*buf == '\033') {
/* Look for a key without the escape. */
n = tty_keys_next1(tty, buf + 1, len - 1, &key, &size, expired);
if (n == 0) { /* found */
key |= KEYC_ESCAPE;
size++;
goto complete_key;
}
if (n == 1) /* partial */
goto partial_key;
}
/* Try to lookup key. */
n = tty_keys_next1(tty, buf, len, &key, &size, expired);
if (n == 0) /* found */
goto complete_key;
if (n == 1)
goto partial_key;
/* Is this an an xterm(1) key? */
n = xterm_keys_find(buf, len, &size, &key);
if (n == 0)
goto complete_key;
if (n == 1 && !expired)
goto partial_key;
/*
* At this point, we know the key is not partial (with or without
* escape). So pass it through even if the timer has not expired.
*/
if (*buf == '\033' && len >= 2) {
key = (u_char)buf[1] | KEYC_ESCAPE;
size = 2;
} else {
key = (u_char)buf[0];
size = 1;
}
goto complete_key;
partial_key:
log_debug("partial key %.*s", (int)len, buf);
/* If timer is going, check for expiration. */
if (tty->flags & TTY_TIMER) {
if (evtimer_initialized(&tty->key_timer) &&
!evtimer_pending(&tty->key_timer, NULL)) {
expired = 1;
goto first_key;
}
return (0);
}
/* Get the time period. */
delay = options_get_number(global_options, "escape-time");
tv.tv_sec = delay / 1000;
tv.tv_usec = (delay % 1000) * 1000L;
/* Start the timer. */
if (event_initialized(&tty->key_timer))
evtimer_del(&tty->key_timer);
evtimer_set(&tty->key_timer, tty_keys_callback, tty);
evtimer_add(&tty->key_timer, &tv);
tty->flags |= TTY_TIMER;
return (0);
complete_key:
log_debug("complete key %.*s %#llx", (int)size, buf, key);
/*
* Check for backspace key using termios VERASE - the terminfo
* kbs entry is extremely unreliable, so cannot be safely
* used. termios should have a better idea.
*/
bspace = tty->tio.c_cc[VERASE];
if (bspace != _POSIX_VDISABLE && (key & KEYC_MASK_KEY) == bspace)
key = (key & KEYC_MASK_MOD) | KEYC_BSPACE;
/* Remove data from buffer. */
evbuffer_drain(tty->event->input, size);
/* Remove key timer. */
if (event_initialized(&tty->key_timer))
evtimer_del(&tty->key_timer);
tty->flags &= ~TTY_TIMER;
/* Check for focus events. */
if (key == KEYC_FOCUS_OUT) {
tty->client->flags &= ~CLIENT_FOCUSED;
return (1);
} else if (key == KEYC_FOCUS_IN) {
tty->client->flags |= CLIENT_FOCUSED;
return (1);
}
/* Fire the key. */
if (key != KEYC_UNKNOWN)
server_client_handle_key(tty->client, key);
return (1);
discard_key:
log_debug("discard key %.*s %#llx", (int)size, buf, key);
/* Remove data from buffer. */
evbuffer_drain(tty->event->input, size);
return (1);
}
