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Sync OpenBSD patchset 564:

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Handle the possibility of partial mouse reads, and fix a comment while here.
This commit is contained in:
Tiago Cunha 2009-11-28 14:44:00 +00:00
parent 8ba590b473
commit d517ffe7c9
1 changed files with 37 additions and 10 deletions
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47
tty-keys.c
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@ -1,4 +1,4 @@
/* $Id: tty-keys.c,v 1.47 2009-11-13 16:56:15 tcunha Exp $ */ /* $Id: tty-keys.c,v 1.48 2009-11-28 14:44:00 tcunha Exp $ */
/* /*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net> * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -418,7 +418,7 @@ tty_keys_find1(struct tty_key *tk, const char *buf, size_t len, size_t *size)
/* /*
* Process at least one key in the buffer and invoke tty->key_callback. Return * 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. * 0 if there are no further keys, or 1 if there could be more in the buffer.
*/ */
int int
tty_keys_next(struct tty *tty) tty_keys_next(struct tty *tty)
@ -461,12 +461,19 @@ tty_keys_next(struct tty *tty)
} }
/* Not found. Is this a mouse key press? */ /* Not found. Is this a mouse key press? */
key = tty_keys_mouse(buf, len, &size, &mouse); switch (tty_keys_mouse(buf, len, &size, &mouse)) {
if (key != KEYC_NONE) { case 0: /* yes */
evbuffer_drain(tty->event->input, size); evbuffer_drain(tty->event->input, size);
key = KEYC_MOUSE;
goto handle_key; goto handle_key;
case -1: /* no, or not valid */
evbuffer_drain(tty->event->input, size);
return (1);
case 1: /* partial */
goto partial_key;
} }
/* Not found. Try to parse a key with an xterm-style modifier. */ /* Not found. Try to parse a key with an xterm-style modifier. */
key = xterm_keys_find(buf, len, &size); key = xterm_keys_find(buf, len, &size);
if (key != KEYC_NONE) { if (key != KEYC_NONE) {
@ -560,7 +567,10 @@ tty_keys_callback(unused int fd, unused short events, void *data)
; ;
} }
/* Handle mouse key input. */ /*
* Handle mouse key input. Returns 0 for success, -1 for failure, 1 for partial
* (probably a mouse sequence but need more data).
*/
int int
tty_keys_mouse(const char *buf, size_t len, size_t *size, struct mouse_event *m) tty_keys_mouse(const char *buf, size_t len, size_t *size, struct mouse_event *m)
{ {
@ -569,19 +579,36 @@ tty_keys_mouse(const 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. * buttons, X and Y, all based at 32 with 1,1 top-left.
*/ */
if (len != 6 || memcmp(buf, "\033[M", 3) != 0) *size = 0;
return (KEYC_NONE);
if (buf[0] != '\033')
return (-1);
if (len == 1)
return (1);
if (buf[1] != '[')
return (-1);
if (len == 2)
return (1);
if (buf[2] != 'M')
return (-1);
if (len == 3)
return (1);
if (len < 6)
return (1);
*size = 6; *size = 6;
log_debug("mouse input is: %.*s", (int) len, buf); log_debug("mouse input is: %.6s", buf);
m->b = buf[3]; m->b = buf[3];
m->x = buf[4]; m->x = buf[4];
m->y = buf[5]; m->y = buf[5];
if (m->b < 32 || m->x < 33 || m->y < 33) if (m->b < 32 || m->x < 33 || m->y < 33)
return (KEYC_NONE); return (-1);
m->b -= 32; m->b -= 32;
m->x -= 33; m->x -= 33;
m->y -= 33; m->y -= 33;
return (KEYC_MOUSE); return (0);
} }