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Handle partial xterm function key sequences.

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This commit is contained in:
Nicholas Marriott 2009-11-30 16:44:03 +00:00
parent 2182e1badc
commit 29a5931c6a
3 changed files with 32 additions and 16 deletions
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2
tmux.h
View File

@ -1647,7 +1647,7 @@ void input_mouse(struct window_pane *, struct mouse_event *);
/* xterm-keys.c */
char *xterm_keys_lookup(int);
int xterm_keys_find(const char *, size_t, size_t *);
int xterm_keys_find(const char *, size_t, size_t *, int *);
/* colour.c */
void colour_set_fg(struct grid_cell *, int);

9
tty-keys.c
View File

@ -472,12 +472,15 @@ tty_keys_next(struct tty *tty)
goto partial_key;
}
/* Not found. Try to parse a key with an xterm-style modifier. */
key = xterm_keys_find(buf, len, &size);
if (key != KEYC_NONE) {
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;
}
/* Skip the escape. */

35
xterm-keys.c
View File

@ -85,22 +85,28 @@ struct xterm_keys_entry xterm_keys_table[] = {
{ KEYC_DC, "\033[3;_~" },
};
/* Match key against buffer, treating _ as a wildcard. */
/*
* Match key against buffer, treating _ as a wildcard. Return -1 for no match,
* 0 for match, 1 if the end of the buffer is reached (need more data).
*/
int
xterm_keys_match(const char *template, const char *buf, size_t len)
{
size_t pos;
if (len == 0 || len < strlen(template))
if (len == 0)
return (0);
pos = 0;
do {
if (*template != '_' && buf[pos] != *template)
return (0);
return (-1);
} while (pos++ != len && *++template != '\0');
if (*template != '\0') /* partial */
return (1);
return (0);
}
/* Find modifiers based on template. */
@ -131,22 +137,29 @@ xterm_keys_modifiers(const char *template, const char *buf, size_t len)
return (0);
}
/* Lookup key from buffer against table. */
/*
* Lookup key from a buffer against the table. Returns 0 for found (and the
* key), -1 for not found, 1 for partial match.
*/
int
xterm_keys_find(const char *buf, size_t len, size_t *size)
xterm_keys_find(const char *buf, size_t len, size_t *size, int *key)
{
struct xterm_keys_entry *entry;
u_int i;
for (i = 0; i < nitems(xterm_keys_table); i++) {
entry = &xterm_keys_table[i];
if (xterm_keys_match(entry->template, buf, len))
break;
}
if (i == nitems(xterm_keys_table))
return (KEYC_NONE);
switch (xterm_keys_match(entry->template, buf, len)) {
case 0:
*size = strlen(entry->template);
return (entry->key | xterm_keys_modifiers(entry->template, buf, len));
*key = entry->key;
*key |= xterm_keys_modifiers(entry->template, buf, len);
return (0);
case 1:
return (1);
}
}
return (-1);
}
/* Lookup a key number from the table. */