mirror of
https://github.com/tmux/tmux.git
synced 2024-12-13 01:48:47 +00:00
Sync OpenBSD patchset 513:
Switch the tty key tree over to an (unbalanced) ternary tree which allows partial matches to be done (they wait for further data or a timer to expire, like a naked escape). Mouse and xterm-style keys still expect to be atomic.
This commit is contained in:
Tiago Cunha
parent
f18b224983
commit
181e1cc711
15
tmux.h
15
tmux.h
@ -1,4 +1,4 @@
|
||||
/* $Id: tmux.h,v 1.510 2009-11-08 23:29:34 tcunha Exp $ */
|
||||
/* $Id: tmux.h,v 1.511 2009-11-08 23:32:39 tcunha Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
|
||||
@ -935,10 +935,13 @@ ARRAY_DECL(sessions, struct session *);
|
||||
|
||||
/* TTY information. */
|
||||
struct tty_key {
|
||||
char ch;
|
||||
int key;
|
||||
char *string;
|
||||
|
||||
RB_ENTRY(tty_key) entry;
|
||||
struct tty_key *left;
|
||||
struct tty_key *right;
|
||||
|
||||
struct tty_key *next;
|
||||
};
|
||||
|
||||
struct tty_term {
|
||||
@ -997,9 +1000,7 @@ struct tty {
|
||||
void (*key_callback)(int, struct mouse_event *, void *);
|
||||
void *key_data;
|
||||
struct event key_timer;
|
||||
|
||||
size_t ksize; /* maximum key size */
|
||||
RB_HEAD(tty_keys, tty_key) ktree;
|
||||
struct tty_key *key_tree;
|
||||
};
|
||||
|
||||
/* TTY command context and function pointer. */
|
||||
@ -1350,8 +1351,6 @@ int tty_term_number(struct tty_term *, enum tty_code_code);
|
||||
int tty_term_flag(struct tty_term *, enum tty_code_code);
|
||||
|
||||
/* tty-keys.c */
|
||||
int tty_keys_cmp(struct tty_key *, struct tty_key *);
|
||||
RB_PROTOTYPE(tty_keys, tty_key, entry, tty_keys_cmp);
|
||||
void tty_keys_init(struct tty *);
|
||||
void tty_keys_free(struct tty *);
|
||||
int tty_keys_next(struct tty *);
|
||||
|
||||
244
tty-keys.c
244
tty-keys.c
@ -1,4 +1,4 @@
|
||||
/* $Id: tty-keys.c,v 1.41 2009-11-08 23:29:34 tcunha Exp $ */
|
||||
/* $Id: tty-keys.c,v 1.42 2009-11-08 23:32:39 tcunha Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
|
||||
@ -26,10 +26,17 @@
|
||||
#include "tmux.h"
|
||||
|
||||
/*
|
||||
* Handle keys input from the outside terminal.
|
||||
* Handle keys input from the outside terminal. tty_keys[] is a base table of
|
||||
* supported keys which are looked up in terminfo(5) and translated into a
|
||||
* ternary tree (a binary tree of binary trees).
|
||||
*/
|
||||
|
||||
void tty_keys_add1(struct tty_key **, const char *, int);
|
||||
void tty_keys_add(struct tty *, const char *, int);
|
||||
void tty_keys_free1(struct tty_key *);
|
||||
struct tty_key *tty_keys_find1(
|
||||
struct tty_key *, const char *, size_t, size_t *);
|
||||
struct tty_key *tty_keys_find(struct tty *, const char *, size_t, size_t *);
|
||||
void tty_keys_callback(int, short, void *);
|
||||
int tty_keys_mouse(char *, size_t, size_t *, struct mouse_event *);
|
||||
|
||||
@ -43,6 +50,11 @@ struct tty_key_ent {
|
||||
#define TTYKEY_RAW 0x2
|
||||
};
|
||||
|
||||
/*
|
||||
* Default key tables. Those flagged with TTYKEY_RAW are inserted directly,
|
||||
* otherwise they are looked up in terminfo(5). Any keys marked TTYKEY_CTRL
|
||||
* have their last byte twiddled and are inserted as a Ctrl key as well.
|
||||
*/
|
||||
struct tty_key_ent tty_keys[] = {
|
||||
/* Function keys. */
|
||||
{ TTYC_KF1, NULL, KEYC_F1, TTYKEY_CTRL },
|
||||
@ -186,37 +198,56 @@ struct tty_key_ent tty_keys[] = {
|
||||
{ TTYC_KUP7, NULL, KEYC_UP|KEYC_ESCAPE|KEYC_CTRL, 0 },
|
||||
};
|
||||
|
||||
RB_GENERATE(tty_keys, tty_key, entry, tty_keys_cmp);
|
||||
|
||||
struct tty_key *tty_keys_find(struct tty *, char *, size_t, size_t *);
|
||||
|
||||
int
|
||||
tty_keys_cmp(struct tty_key *k1, struct tty_key *k2)
|
||||
{
|
||||
return (strcmp(k1->string, k2->string));
|
||||
}
|
||||
|
||||
void
|
||||
tty_keys_add(struct tty *tty, const char *s, int key)
|
||||
{
|
||||
struct tty_key *tk, *tl;
|
||||
size_t size;
|
||||
|
||||
tk = xmalloc(sizeof *tk);
|
||||
tk->string = xstrdup(s);
|
||||
if (tty_keys_find(tty, s, strlen(s), &size) == NULL) {
|
||||
log_debug("new key 0x%x: %s", key, s);
|
||||
tty_keys_add1(&tty->key_tree, s, key);
|
||||
}
|
||||
}
|
||||
|
||||
/* Add next node to the tree. */
|
||||
void
|
||||
tty_keys_add1(struct tty_key **tkp, const char *s, int key)
|
||||
{
|
||||
struct tty_key *tk;
|
||||
|
||||
/* Allocate a tree entry if there isn't one already. */
|
||||
tk = *tkp;
|
||||
if (tk == NULL) {
|
||||
tk = *tkp = xcalloc(1, sizeof *tk);
|
||||
tk->ch = *s;
|
||||
tk->key = KEYC_NONE;
|
||||
}
|
||||
|
||||
/* Find the next entry. */
|
||||
if (*s == tk->ch) {
|
||||
/* Move forward in string. */
|
||||
s++;
|
||||
|
||||
/* If this is the end of the string, no more is necessary. */
|
||||
if (*s == '\0') {
|
||||
tk->key = key;
|
||||
|
||||
if ((tl = RB_INSERT(tty_keys, &tty->ktree, tk)) != NULL) {
|
||||
xfree(tk->string);
|
||||
xfree(tk);
|
||||
log_debug("key exists: %s (old %x, new %x)", s, tl->key, key);
|
||||
return;
|
||||
}
|
||||
|
||||
if (strlen(tk->string) > tty->ksize)
|
||||
tty->ksize = strlen(tk->string);
|
||||
log_debug("new key %x: size now %zu (%s)", key, tty->ksize, tk->string);
|
||||
/* Use the child tree for the next character. */
|
||||
tkp = &tk->next;
|
||||
} else {
|
||||
if (*s < tk->ch)
|
||||
tkp = &tk->left;
|
||||
else if (*s > tk->ch)
|
||||
tkp = &tk->right;
|
||||
}
|
||||
|
||||
/* And recurse to add it. */
|
||||
tty_keys_add1(tkp, s, key);
|
||||
}
|
||||
|
||||
/* Initialise a key tree from the table. */
|
||||
void
|
||||
tty_keys_init(struct tty *tty)
|
||||
{
|
||||
@ -225,9 +256,7 @@ tty_keys_init(struct tty *tty)
|
||||
const char *s;
|
||||
char tmp[64];
|
||||
|
||||
RB_INIT(&tty->ktree);
|
||||
|
||||
tty->ksize = 0;
|
||||
tty->key_tree = NULL;
|
||||
for (i = 0; i < nitems(tty_keys); i++) {
|
||||
tke = &tty_keys[i];
|
||||
|
||||
@ -237,12 +266,12 @@ tty_keys_init(struct tty *tty)
|
||||
if (!tty_term_has(tty->term, tke->code))
|
||||
continue;
|
||||
s = tty_term_string(tty->term, tke->code);
|
||||
}
|
||||
if (s[0] != '\033' || s[1] == '\0')
|
||||
continue;
|
||||
}
|
||||
|
||||
tty_keys_add(tty, s + 1, tke->key);
|
||||
if (tke->flags & TTYKEY_CTRL) {
|
||||
if (!(tke->flags & TTYKEY_CTRL)) {
|
||||
if (strlcpy(tmp, s, sizeof tmp) >= sizeof tmp)
|
||||
continue;
|
||||
tmp[strlen(tmp) - 1] ^= 0x20;
|
||||
@ -251,61 +280,80 @@ tty_keys_init(struct tty *tty)
|
||||
}
|
||||
}
|
||||
|
||||
/* Free the entire key tree. */
|
||||
void
|
||||
tty_keys_free(struct tty *tty)
|
||||
{
|
||||
struct tty_key *tk;
|
||||
|
||||
while (!RB_EMPTY(&tty->ktree)) {
|
||||
tk = RB_ROOT(&tty->ktree);
|
||||
RB_REMOVE(tty_keys, &tty->ktree, tk);
|
||||
xfree(tk->string);
|
||||
xfree(tk);
|
||||
}
|
||||
tty_keys_free1(tty->key_tree);
|
||||
}
|
||||
|
||||
struct tty_key *
|
||||
tty_keys_find(struct tty *tty, char *buf, size_t len, size_t *size)
|
||||
/* Free a single key. */
|
||||
void
|
||||
tty_keys_free1(struct tty_key *tk)
|
||||
{
|
||||
struct tty_key *tk, tl;
|
||||
char *s;
|
||||
if (tk->next != NULL)
|
||||
tty_keys_free1(tk->next);
|
||||
if (tk->left != NULL)
|
||||
tty_keys_free1(tk->left);
|
||||
if (tk->right != NULL)
|
||||
tty_keys_free1(tk->right);
|
||||
xfree(tk);
|
||||
|
||||
if (len == 0)
|
||||
return (NULL);
|
||||
|
||||
s = xmalloc(tty->ksize + 1);
|
||||
for (*size = tty->ksize; (*size) > 0; (*size)--) {
|
||||
if ((*size) > len)
|
||||
continue;
|
||||
memcpy(s, buf, *size);
|
||||
s[*size] = '\0';
|
||||
|
||||
log_debug2("looking for key: %s", s);
|
||||
|
||||
tl.string = s;
|
||||
tk = RB_FIND(tty_keys, &tty->ktree, &tl);
|
||||
if (tk != NULL) {
|
||||
log_debug2("got key: 0x%x", tk->key);
|
||||
xfree(s);
|
||||
return (tk);
|
||||
}
|
||||
}
|
||||
xfree(s);
|
||||
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
/* Lookup a key in the tree. */
|
||||
struct tty_key *
|
||||
tty_keys_find(struct tty *tty, const char *buf, size_t len, size_t *size)
|
||||
{
|
||||
*size = 0;
|
||||
return (tty_keys_find1(tty->key_tree, buf, len, size));
|
||||
}
|
||||
|
||||
/* Find the next node. */
|
||||
struct tty_key *
|
||||
tty_keys_find1(struct tty_key *tk, const char *buf, size_t len, size_t *size)
|
||||
{
|
||||
/* If the node is NULL, this is the end of the tree. No match. */
|
||||
if (tk == NULL)
|
||||
return (NULL);
|
||||
|
||||
/* Pick the next in the sequence. */
|
||||
if (tk->ch == *buf) {
|
||||
/* Move forward in the string. */
|
||||
buf++; len--;
|
||||
(*size)++;
|
||||
|
||||
/* At the end of the string, return the current node. */
|
||||
if (len == 0)
|
||||
return (tk);
|
||||
|
||||
/* Move into the next tree for the following character. */
|
||||
tk = tk->next;
|
||||
} else {
|
||||
if (*buf < tk->ch)
|
||||
tk = tk->left;
|
||||
else if (*buf > tk->ch)
|
||||
tk = tk->right;
|
||||
}
|
||||
|
||||
/* Move to the next in the tree. */
|
||||
return (tty_keys_find1(tk, buf, len, size));
|
||||
}
|
||||
|
||||
/*
|
||||
* Process at least one key in the buffer and invoke tty->key_callback. Return
|
||||
* 1 if there are no further keys, or 0 if there is more in the buffer.
|
||||
*/
|
||||
int
|
||||
tty_keys_next(struct tty *tty)
|
||||
{
|
||||
struct tty_key *tk;
|
||||
struct timeval tv;
|
||||
struct mouse_event mouse;
|
||||
char *buf;
|
||||
char *buf, *ptr;
|
||||
size_t len, size;
|
||||
cc_t bspace;
|
||||
int key;
|
||||
u_char ch;
|
||||
|
||||
buf = EVBUFFER_DATA(tty->event->input);
|
||||
len = EVBUFFER_LENGTH(tty->event->input);
|
||||
@ -315,8 +363,8 @@ tty_keys_next(struct tty *tty)
|
||||
|
||||
/* If a normal key, return it. */
|
||||
if (*buf != '\033') {
|
||||
bufferevent_read(tty->event, &ch, 1);
|
||||
key = ch;
|
||||
key = *buf;
|
||||
evbuffer_drain(tty->event->input, 1);
|
||||
|
||||
/*
|
||||
* Check for backspace key using termios VERASE - the terminfo
|
||||
@ -326,29 +374,28 @@ tty_keys_next(struct tty *tty)
|
||||
bspace = tty->tio.c_cc[VERASE];
|
||||
if (bspace != _POSIX_VDISABLE && key == bspace)
|
||||
key = KEYC_BSPACE;
|
||||
goto found;
|
||||
goto handle_key;
|
||||
}
|
||||
|
||||
/* Look for matching key string and return if found. */
|
||||
tk = tty_keys_find(tty, buf + 1, len - 1, &size);
|
||||
if (tk != NULL) {
|
||||
evbuffer_drain(tty->event->input, size + 1);
|
||||
key = tk->key;
|
||||
goto found;
|
||||
goto found_key;
|
||||
}
|
||||
|
||||
/* Not found. Is this a mouse key press? */
|
||||
key = tty_keys_mouse(buf, len, &size, &mouse);
|
||||
if (key != KEYC_NONE) {
|
||||
evbuffer_drain(tty->event->input, size);
|
||||
goto found;
|
||||
goto handle_key;
|
||||
}
|
||||
|
||||
/* Not found. Try to parse a key with an xterm-style modifier. */
|
||||
key = xterm_keys_find(buf, len, &size);
|
||||
if (key != KEYC_NONE) {
|
||||
evbuffer_drain(tty->event->input, size);
|
||||
goto found;
|
||||
goto handle_key;
|
||||
}
|
||||
|
||||
/* Skip the escape. */
|
||||
@ -357,32 +404,37 @@ tty_keys_next(struct tty *tty)
|
||||
|
||||
/* Is there a normal key following? */
|
||||
if (len != 0 && *buf != '\033') {
|
||||
evbuffer_drain(tty->event->input, 1);
|
||||
bufferevent_read(tty->event, &ch, 1);
|
||||
key = ch | KEYC_ESCAPE;
|
||||
goto found;
|
||||
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) {
|
||||
evbuffer_drain(tty->event->input, size + 2);
|
||||
key = tk->key | KEYC_ESCAPE;
|
||||
goto found;
|
||||
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, then the
|
||||
* Escape but no key string. If have already seen an escape, then the
|
||||
* timer must have expired, so give up waiting and send the escape.
|
||||
*/
|
||||
if (tty->flags & TTY_ESCAPE) {
|
||||
evbuffer_drain(tty->event->input, 1);
|
||||
key = '\033';
|
||||
goto found;
|
||||
goto handle_key;
|
||||
}
|
||||
|
||||
/* Fall through to start the timer. */
|
||||
|
||||
start_timer:
|
||||
/* Start the timer and wait for expiry or more data. */
|
||||
tv.tv_sec = 0;
|
||||
tv.tv_usec = ESCAPE_PERIOD * 1000L;
|
||||
@ -394,22 +446,45 @@ tty_keys_next(struct tty *tty)
|
||||
tty->flags |= TTY_ESCAPE;
|
||||
return (0);
|
||||
|
||||
found:
|
||||
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:
|
||||
evtimer_del(&tty->key_timer);
|
||||
|
||||
tty->key_callback(key, &mouse, tty->key_data);
|
||||
|
||||
tty->flags &= ~TTY_ESCAPE;
|
||||
return (1);
|
||||
}
|
||||
|
||||
/* Key timer callback. */
|
||||
void
|
||||
tty_keys_callback(unused int fd, unused short events, void *data)
|
||||
{
|
||||
struct tty *tty = data;
|
||||
|
||||
if (tty->flags & TTY_ESCAPE)
|
||||
tty_keys_next(tty);
|
||||
if (!(tty->flags & TTY_ESCAPE))
|
||||
return;
|
||||
|
||||
while (tty_keys_next(tty))
|
||||
;
|
||||
}
|
||||
|
||||
/* Handle mouse key input. */
|
||||
int
|
||||
tty_keys_mouse(char *buf, size_t len, size_t *size, struct mouse_event *m)
|
||||
{
|
||||
@ -418,11 +493,12 @@ tty_keys_mouse(char *buf, size_t len, size_t *size, struct mouse_event *m)
|
||||
* buttons, X and Y, all based at 32 with 1,1 top-left.
|
||||
*/
|
||||
|
||||
log_debug("mouse input is: %.*s", (int) len, buf);
|
||||
if (len != 6 || memcmp(buf, "\033[M", 3) != 0)
|
||||
return (KEYC_NONE);
|
||||
*size = 6;
|
||||
|
||||
log_debug("mouse input is: %.*s", (int) len, buf);
|
||||
|
||||
m->b = buf[3];
|
||||
m->x = buf[4];
|
||||
m->y = buf[5];
|
||||
|
||||
Loading…
Reference in New Issue
Block a user