Exemple #1
0
/*
 * Convert a string into a buffer of UTF-8 characters. Terminated by size == 0.
 * Caller frees.
 */
struct utf8_data *
utf8_fromcstr(const char *src)
{
	struct utf8_data	*dst;
	size_t			 n;
	enum utf8_state		 more;

	dst = NULL;

	n = 0;
	while (*src != '\0') {
		dst = xreallocarray(dst, n + 1, sizeof *dst);
		if ((more = utf8_open(&dst[n], *src)) == UTF8_MORE) {
			while (*++src != '\0' && more == UTF8_MORE)
				more = utf8_append(&dst[n], *src);
			if (more == UTF8_DONE) {
				n++;
				continue;
			}
			src -= dst[n].have;
		}
		utf8_set(&dst[n], *src);
		n++;
		src++;
	}

	dst = xreallocarray(dst, n + 1, sizeof *dst);
	dst[n].size = 0;
	return (dst);
}
Exemple #2
0
/* Calculate string length. */
size_t printflike2
screen_write_strlen(int utf8flag, const char *fmt, ...)
{
	va_list			ap;
	char   	       	       *msg;
	struct utf8_data	utf8data;
	u_char 	      	       *ptr;
	size_t			left, size = 0;

	va_start(ap, fmt);
	xvasprintf(&msg, fmt, ap);
	va_end(ap);

	ptr = msg;
	while (*ptr != '\0') {
		if (utf8flag && *ptr > 0x7f && utf8_open(&utf8data, *ptr)) {
			ptr++;

			left = strlen(ptr);
			if (left < utf8data.size - 1)
				break;
			while (utf8_append(&utf8data, *ptr))
				ptr++;
			ptr++;

			size += utf8data.width;
		} else {
			size++;
			ptr++;
		}
	}

	free(msg);
	return (size);
}
Exemple #3
0
/*
 * Encode len characters from src into dst, which is guaranteed to have four
 * bytes available for each character from src (for \abc or UTF-8) plus space
 * for \0.
 */
int
utf8_strvis(char *dst, const char *src, size_t len, int flag)
{
	struct utf8_data	 ud;
	const char		*start, *end;
	enum utf8_state		 more;
	size_t			 i;

	start = dst;
	end = src + len;

	while (src < end) {
		if ((more = utf8_open(&ud, *src)) == UTF8_MORE) {
			while (++src < end && more == UTF8_MORE)
				more = utf8_append(&ud, *src);
			if (more == UTF8_DONE) {
				/* UTF-8 character finished. */
				for (i = 0; i < ud.size; i++)
					*dst++ = ud.data[i];
				continue;
			}
			/* Not a complete, valid UTF-8 character. */
			src -= ud.have;
		}
		if (src < end - 1)
			dst = vis(dst, src[0], flag, src[1]);
		else if (src < end)
			dst = vis(dst, src[0], flag, '\0');
		src++;
	}

	*dst = '\0';
	return (dst - start);
}
Exemple #4
0
/* Append to UTF-8 character. */
int
input_utf8_add(struct input_ctx *ictx)
{
	log_debug("%s", __func__);

	utf8_append(&ictx->utf8data, ictx->ch);
	return (0);
}
Exemple #5
0
void
screen_write_vnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
    struct grid_cell *gc, const char *fmt, va_list ap)
{
	char   		       *msg;
	struct utf8_data	ud;
	u_char 		       *ptr;
	size_t		 	left, size = 0;
	enum utf8_state		more;

	xvasprintf(&msg, fmt, ap);

	ptr = msg;
	while (*ptr != '\0') {
		if (*ptr > 0x7f && utf8_open(&ud, *ptr) == UTF8_MORE) {
			ptr++;

			left = strlen(ptr);
			if (left < (size_t)ud.size - 1)
				break;
			while ((more = utf8_append(&ud, *ptr)) == UTF8_MORE)
				ptr++;
			ptr++;

			if (more == UTF8_DONE) {
				if (maxlen > 0 &&
				    size + ud.width > (size_t) maxlen) {
					while (size < (size_t) maxlen) {
						screen_write_putc(ctx, gc, ' ');
						size++;
					}
					break;
				}
				size += ud.width;

				utf8_copy(&gc->data, &ud);
				screen_write_cell(ctx, gc);
			}
		} else {
			if (maxlen > 0 && size + 1 > (size_t) maxlen)
				break;

			if (*ptr == '\001')
				gc->attr ^= GRID_ATTR_CHARSET;
			else if (*ptr > 0x1f && *ptr < 0x7f) {
				size++;
				screen_write_putc(ctx, gc, *ptr);
			}
			ptr++;
		}
	}

	free(msg);
}
Exemple #6
0
void
screen_write_vnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
    const struct grid_cell *gcp, const char *fmt, va_list ap)
{
	struct grid_cell	gc;
	struct utf8_data       *ud = &gc.data;
	char   		       *msg;
	u_char 		       *ptr;
	size_t		 	left, size = 0;
	enum utf8_state		more;

	memcpy(&gc, gcp, sizeof gc);
	xvasprintf(&msg, fmt, ap);

	ptr = msg;
	while (*ptr != '\0') {
		if (*ptr > 0x7f && utf8_open(ud, *ptr) == UTF8_MORE) {
			ptr++;

			left = strlen(ptr);
			if (left < (size_t)ud->size - 1)
				break;
			while ((more = utf8_append(ud, *ptr)) == UTF8_MORE)
				ptr++;
			ptr++;

			if (more != UTF8_DONE)
				continue;
			if (maxlen > 0 && size + ud->width > (size_t)maxlen) {
				while (size < (size_t)maxlen) {
					screen_write_putc(ctx, &gc, ' ');
					size++;
				}
				break;
			}
			size += ud->width;
			screen_write_cell(ctx, &gc);
		} else {
			if (maxlen > 0 && size + 1 > (size_t)maxlen)
				break;

			if (*ptr == '\001')
				gc.attr ^= GRID_ATTR_CHARSET;
			else if (*ptr > 0x1f && *ptr < 0x7f) {
				size++;
				screen_write_putc(ctx, &gc, *ptr);
			}
			ptr++;
		}
	}

	free(msg);
}
Exemple #7
0
/* Close UTF-8 string. */
int
input_utf8_close(struct input_ctx *ictx)
{
	log_debug("%s", __func__);

	utf8_append(&ictx->utf8data, ictx->ch);

	grid_cell_set(&ictx->cell, &ictx->utf8data);
	screen_write_cell(&ictx->ctx, &ictx->cell);

	return (0);
}
Exemple #8
0
void kitten_putc(Boxed stack, Boxed definitions) {
  trace("kitten_putc()\n");
  assert(stack);
  assert(is_quotation(stack));
  assert(is_integer(top(stack)));
  Boxed a = pop(stack);
  Integer character = integer_unbox(a);
  assert(character >= 0 && character <= UINT32_MAX);
  char buffer[5] = { 0 };
  utf8_append(character, (uint8_t*)buffer);
  printf("%s", buffer);
}
Exemple #9
0
void
screen_write_vnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
    struct grid_cell *gc, int utf8flag, const char *fmt, va_list ap)
{
	char   		       *msg;
	struct utf8_data	utf8data;
	u_char 		       *ptr;
	size_t		 	left, size = 0;

	xvasprintf(&msg, fmt, ap);

	ptr = msg;
	while (*ptr != '\0') {
		if (utf8flag && *ptr > 0x7f && utf8_open(&utf8data, *ptr)) {
			ptr++;

			left = strlen(ptr);
			if (left < utf8data.size - 1)
				break;
			while (utf8_append(&utf8data, *ptr))
				ptr++;
			ptr++;

			if (maxlen > 0 &&
			    size + utf8data.width > (size_t) maxlen) {
				while (size < (size_t) maxlen) {
					screen_write_putc(ctx, gc, ' ');
					size++;
				}
				break;
			}
			size += utf8data.width;

			gc->flags |= GRID_FLAG_UTF8;
			screen_write_cell(ctx, gc, &utf8data);
			gc->flags &= ~GRID_FLAG_UTF8;
		} else {
			if (maxlen > 0 && size + 1 > (size_t) maxlen)
				break;

			if (*ptr == '\001')
				gc->attr ^= GRID_ATTR_CHARSET;
			else {
				size++;
				screen_write_putc(ctx, gc, *ptr);
			}
			ptr++;
		}
	}

	free(msg);
}
Exemple #10
0
/* Close UTF-8 string. */
int
input_utf8_close(struct input_ctx *ictx)
{
	log_debug("%s", __func__);

	utf8_append(&ictx->utf8data, ictx->ch);

	ictx->cell.flags |= GRID_FLAG_UTF8;
	screen_write_cell(&ictx->ctx, &ictx->cell, &ictx->utf8data);
	ictx->cell.flags &= ~GRID_FLAG_UTF8;

	return (0);
}
Exemple #11
0
/* Look up part of the next key. */
static int
tty_keys_next1(struct tty *tty, const char *buf, size_t len, key_code *key,
    size_t *size, int expired)
{
	struct tty_key		*tk, *tk1;
	struct utf8_data	 ud;
	enum utf8_state		 more;
	u_int			 i;
	wchar_t			 wc;

	log_debug("next key is %zu (%.*s) (expired=%d)", len, (int)len, buf,
	    expired);

	/* Is this a known key? */
	tk = tty_keys_find(tty, buf, len, size);
	if (tk != NULL && tk->key != KEYC_UNKNOWN) {
		tk1 = tk;
		do
			log_debug("keys in list: %#llx", tk1->key);
		while ((tk1 = tk1->next) != NULL);
		if (tk->next != NULL && !expired)
			return (1);
		*key = tk->key;
		return (0);
	}

	/* Is this valid UTF-8? */
	more = utf8_open(&ud, (u_char)*buf);
	if (more == UTF8_MORE) {
		*size = ud.size;
		if (len < ud.size) {
			if (!expired)
				return (1);
			return (-1);
		}
		for (i = 1; i < ud.size; i++)
			more = utf8_append(&ud, (u_char)buf[i]);
		if (more != UTF8_DONE)
			return (-1);

		if (utf8_combine(&ud, &wc) != UTF8_DONE)
			return (-1);
		*key = wc;

		log_debug("UTF-8 key %.*s %#llx", (int)ud.size, buf, *key);
		return (0);
	}

	return (-1);
}
Exemple #12
0
/*
 * Open UTF-8 sequence.
 *
 * 11000010-11011111 C2-DF start of 2-byte sequence
 * 11100000-11101111 E0-EF start of 3-byte sequence
 * 11110000-11110100 F0-F4 start of 4-byte sequence
 */
enum utf8_state
utf8_open(struct utf8_data *ud, u_char ch)
{
	memset(ud, 0, sizeof *ud);
	if (ch >= 0xc2 && ch <= 0xdf)
		ud->size = 2;
	else if (ch >= 0xe0 && ch <= 0xef)
		ud->size = 3;
	else if (ch >= 0xf0 && ch <= 0xf4)
		ud->size = 4;
	else
		return (UTF8_ERROR);
	utf8_append(ud, ch);
	return (UTF8_MORE);
}
Exemple #13
0
/*
 * Open UTF-8 sequence.
 *
 * 11000010-11011111 C2-DF start of 2-byte sequence
 * 11100000-11101111 E0-EF start of 3-byte sequence
 * 11110000-11110100 F0-F4 start of 4-byte sequence
 *
 * Returns 1 if more UTF-8 to come, 0 if not UTF-8.
 */
int
utf8_open(struct utf8_data *utf8data, u_char ch)
{
	memset(utf8data, 0, sizeof *utf8data);
	if (ch >= 0xc2 && ch <= 0xdf)
		utf8data->size = 2;
	else if (ch >= 0xe0 && ch <= 0xef)
		utf8data->size = 3;
	else if (ch >= 0xf0 && ch <= 0xf4)
		utf8data->size = 4;
	else
		return (0);
	utf8_append(utf8data, ch);
	return (1);
}
Exemple #14
0
/* Calculate string length. */
size_t
screen_write_strlen(const char *fmt, ...)
{
	va_list			ap;
	char   	       	       *msg;
	struct utf8_data	ud;
	u_char 	      	       *ptr;
	size_t			left, size = 0;
	enum utf8_state		more;

	va_start(ap, fmt);
	xvasprintf(&msg, fmt, ap);
	va_end(ap);

	ptr = msg;
	while (*ptr != '\0') {
		if (*ptr > 0x7f && utf8_open(&ud, *ptr) == UTF8_MORE) {
			ptr++;

			left = strlen(ptr);
			if (left < (size_t)ud.size - 1)
				break;
			while ((more = utf8_append(&ud, *ptr)) == UTF8_MORE)
				ptr++;
			ptr++;

			if (more == UTF8_DONE)
				size += ud.width;
		} else {
			if (*ptr > 0x1f && *ptr < 0x7f)
				size++;
			ptr++;
		}
	}

	free(msg);
	return (size);
}
Exemple #15
0
/*
 * Sanitize a string, changing any UTF-8 characters to '_'. Caller should free
 * the returned string. Anything not valid printable ASCII or UTF-8 is
 * stripped.
 */
char *
utf8_sanitize(const char *src)
{
	char			*dst;
	size_t			 n;
	enum utf8_state		 more;
	struct utf8_data	 ud;
	u_int			 i;

	dst = NULL;

	n = 0;
	while (*src != '\0') {
		dst = xreallocarray(dst, n + 1, sizeof *dst);
		if ((more = utf8_open(&ud, *src)) == UTF8_MORE) {
			while (*++src != '\0' && more == UTF8_MORE)
				more = utf8_append(&ud, *src);
			if (more == UTF8_DONE) {
				dst = xreallocarray(dst, n + ud.width,
				    sizeof *dst);
				for (i = 0; i < ud.width; i++)
					dst[n++] = '_';
				continue;
			}
			src -= ud.have;
		}
		if (*src > 0x1f && *src < 0x7f)
			dst[n++] = *src;
		else
			dst[n++] = '_';
		src++;
	}

	dst = xreallocarray(dst, n + 1, sizeof *dst);
	dst[n] = '\0';
	return (dst);
}
Exemple #16
0
/* Get width of UTF-8 string. */
u_int
utf8_cstrwidth(const char *s)
{
	struct utf8_data	tmp;
	u_int			width;
	enum utf8_state		more;

	width = 0;
	while (*s != '\0') {
		if ((more = utf8_open(&tmp, *s)) == UTF8_MORE) {
			while (*++s != '\0' && more == UTF8_MORE)
				more = utf8_append(&tmp, *s);
			if (more == UTF8_DONE) {
				width += tmp.width;
				continue;
			}
			s -= tmp.have;
		}
		if (*s > 0x1f && *s != 0x7f)
			width++;
		s++;
	}
	return (width);
}
Exemple #17
0
/* Lookup a string and convert to a key value. */
key_code
key_string_lookup_string(const char *string)
{
	static const char	*other = "!#()+,-.0123456789:;<=>?'\r\t";
	key_code		 key;
	u_short			 u;
	int			 size;
	key_code		 modifiers;
	struct utf8_data	 ud;
	u_int			 i;
	enum utf8_state		 more;
	wchar_t			 wc;

	/* Is this no key? */
	if (strcasecmp(string, "None") == 0)
		return (KEYC_NONE);

	/* Is this a hexadecimal value? */
	if (string[0] == '0' && string[1] == 'x') {
	        if (sscanf(string + 2, "%hx%n", &u, &size) != 1 || size > 4)
	                return (KEYC_UNKNOWN);
	        return (u);
	}

	/* Check for modifiers. */
	modifiers = 0;
	if (string[0] == '^' && string[1] != '\0') {
		modifiers |= KEYC_CTRL;
		string++;
	}
	modifiers |= key_string_get_modifiers(&string);
	if (string[0] == '\0')
		return (KEYC_UNKNOWN);

	/* Is this a standard ASCII key? */
	if (string[1] == '\0' && (u_char)string[0] <= 127) {
		key = (u_char)string[0];
		if (key < 32 || key == 127)
			return (KEYC_UNKNOWN);
	} else {
		/* Try as a UTF-8 key. */
		if ((more = utf8_open(&ud, (u_char)*string)) == UTF8_MORE) {
			if (strlen(string) != ud.size)
				return (KEYC_UNKNOWN);
			for (i = 1; i < ud.size; i++)
				more = utf8_append(&ud, (u_char)string[i]);
			if (more != UTF8_DONE)
				return (KEYC_UNKNOWN);
			if (utf8_combine(&ud, &wc) != UTF8_DONE)
				return (KEYC_UNKNOWN);
			return (wc | modifiers);
		}

		/* Otherwise look the key up in the table. */
		key = key_string_search_table(string);
		if (key == KEYC_UNKNOWN)
			return (KEYC_UNKNOWN);
	}

	/* Convert the standard control keys. */
	if (key < KEYC_BASE && (modifiers & KEYC_CTRL) && !strchr(other, key)) {
		if (key >= 97 && key <= 122)
			key -= 96;
		else if (key >= 64 && key <= 95)
			key -= 64;
		else if (key == 32)
			key = 0;
		else if (key == 63)
			key = KEYC_BSPACE;
		else
			return (KEYC_UNKNOWN);
		modifiers &= ~KEYC_CTRL;
	}

	return (key | modifiers);
}
Exemple #18
0
/*
 * Handle mouse key input. Returns 0 for success, -1 for failure, 1 for partial
 * (probably a mouse sequence but need more data).
 */
int
tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size)
{
	struct mouse_event	*m = &tty->mouse;
	struct utf8_data	 utf8data;
	u_int			 i, value;

	/*
	 * Standard mouse sequences are \033[M followed by three characters
	 * indicating buttons, X and Y, all based at 32 with 1,1 top-left.
	 *
	 * UTF-8 mouse sequences are similar but the three are expressed as
	 * UTF-8 characters.
	 */

	*size = 0;

	/* First three bytes are always \033[M. */
	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);

	/* Read the three inputs. */
	*size = 3;
	for (i = 0; i < 3; i++) {
		if (len < *size)
			return (1);

		if (tty->mode & MODE_MOUSE_UTF8) {
			if (utf8_open(&utf8data, buf[*size])) {
				if (utf8data.size != 2)
					return (-1);
				(*size)++;
				if (len < *size)
					return (1);
				utf8_append(&utf8data, buf[*size]);
				value = utf8_combine(&utf8data);
			} else
				value = (unsigned char)buf[*size];
			(*size)++;
		} else {
			value = (unsigned char)buf[*size];
			(*size)++;
		}

		if (i == 0)
			m->b = value;
		else if (i == 1)
			m->x = value;
		else
			m->y = value;
	}
	log_debug("mouse input: %.*s", (int) *size, buf);

	/* Check and return the mouse input. */
	if (m->b < 32 || m->x < 33 || m->y < 33)
		return (-1);
	m->b -= 32;
	m->x -= 33;
	m->y -= 33;
	log_debug("mouse position: x=%u y=%u b=%u", m->x, m->y, m->b);
	return (0);
}
Exemple #19
0
/*
 * Handle mouse key input. Returns 0 for success, -1 for failure, 1 for partial
 * (probably a mouse sequence but need more data).
 */
int
tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size)
{
	struct mouse_event	*m = &tty->mouse;
	struct utf8_data	 ud;
	u_int			 i, value, x, y, b, sgr_b;
	u_char			 sgr_type, c;
	enum utf8_state		 more;

	/*
	 * Standard mouse sequences are \033[M followed by three characters
	 * indicating button, X and Y, all based at 32 with 1,1 top-left.
	 *
	 * UTF-8 mouse sequences are similar but the three are expressed as
	 * UTF-8 characters.
	 *
	 * SGR extended mouse sequences are \033[< followed by three numbers in
	 * decimal and separated by semicolons indicating button, X and Y. A
	 * trailing 'M' is click or scroll and trailing 'm' release. All are
	 * based at 0 with 1,1 top-left.
	 */

	*size = 0;
	x = y = b = sgr_b = 0;
	sgr_type = ' ';

	/* First two bytes are always \033[. */
	if (buf[0] != '\033')
		return (-1);
	if (len == 1)
		return (1);
	if (buf[1] != '[')
		return (-1);
	if (len == 2)
		return (1);

	/*
	 * Third byte is M in old standard and UTF-8 extension, < in SGR
	 * extension.
	 */
	if (buf[2] == 'M') {
		/* Read the three inputs. */
		*size = 3;
		for (i = 0; i < 3; i++) {
			if (len <= *size)
				return (1);

			if (tty->mode & MODE_MOUSE_UTF8) {
				if (utf8_open(&ud, buf[*size]) == UTF8_MORE) {
					if (ud.size != 2)
						return (-1);
					(*size)++;
					if (len <= *size)
						return (1);
					more = utf8_append(&ud, buf[*size]);
					if (more != UTF8_DONE)
						return (-1);
					value = utf8_combine(&ud);
				} else
					value = (u_char)buf[*size];
				(*size)++;
			} else {
				value = (u_char)buf[*size];
				(*size)++;
			}

			if (i == 0)
				b = value;
			else if (i == 1)
				x = value;
			else
				y = value;
		}
		log_debug("mouse input: %.*s", (int)*size, buf);

		/* Check and return the mouse input. */
		if (b < 32)
			return (-1);
		b -= 32;
		if (x >= 33)
			x -= 33;
		else
			x = 256 - x;
		if (y >= 33)
			y -= 33;
		else
			y = 256 - y;
	} else if (buf[2] == '<') {
		/* Read the three inputs. */
		*size = 3;
		while (1) {
			if (len <= *size)
				return (1);
			c = (u_char)buf[(*size)++];
			if (c == ';')
				break;
			if (c < '0' || c > '9')
				return (-1);
			sgr_b = 10 * sgr_b + (c - '0');
		}
		while (1) {
			if (len <= *size)
				return (1);
			c = (u_char)buf[(*size)++];
			if (c == ';')
				break;
			if (c < '0' || c > '9')
				return (-1);
			x = 10 * x + (c - '0');
		}
		while (1) {
			if (len <= *size)
				return (1);
			c = (u_char)buf[(*size)++];
			if (c == 'M' || c == 'm')
				break;
			if (c < '0' || c > '9')
				return (-1);
			y = 10 * y + (c - '0');
		}
		log_debug("mouse input (SGR): %.*s", (int)*size, buf);

		/* Check and return the mouse input. */
		if (x < 1 || y < 1)
			return (-1);
		x--;
		y--;
		b = sgr_b;

		/* Type is M for press, m for release. */
		sgr_type = c;
		if (sgr_type == 'm')
			b |= 3;

		/*
		 * Some terminals (like PuTTY 0.63) mistakenly send
		 * button-release events for scroll-wheel button-press event.
		 * Discard it before it reaches any program running inside
		 * tmux.
		 */
		if (sgr_type == 'm' && (sgr_b & 64))
		    return (-2);
	} else
		return (-1);

	/* Fill mouse event. */
	m->lx = m->x;
	m->x = x;
	m->ly = m->y;
	m->y = y;
	m->lb = m->b;
	m->b = b;
	m->sgr_type = sgr_type;
	m->sgr_b = sgr_b;

	return (0);
}
Exemple #20
0
/*
 * 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);
}
Exemple #21
0
/*
 * Handle mouse key input. Returns 0 for success, -1 for failure, 1 for partial
 * (probably a mouse sequence but need more data).
 */
int
tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size)
{
	struct mouse_event	*m = &tty->mouse;
	struct utf8_data	 utf8data;
	u_int			 i, value, x, y, b;

	/*
	 * Standard mouse sequences are \033[M followed by three characters
	 * indicating buttons, X and Y, all based at 32 with 1,1 top-left.
	 *
	 * UTF-8 mouse sequences are similar but the three are expressed as
	 * UTF-8 characters.
	 */

	*size = 0;
	x = y = b  = 0;

	/* First three bytes are always \033[M. */
	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);

	/* Read the three inputs. */
	*size = 3;
	for (i = 0; i < 3; i++) {
		if (len < *size)
			return (1);

		if (tty->mode & MODE_MOUSE_UTF8) {
			if (utf8_open(&utf8data, buf[*size])) {
				if (utf8data.size != 2)
					return (-1);
				(*size)++;
				if (len < *size)
					return (1);
				utf8_append(&utf8data, buf[*size]);
				value = utf8_combine(&utf8data);
			} else
				value = (unsigned char)buf[*size];
			(*size)++;
		} else {
			value = (unsigned char)buf[*size];
			(*size)++;
		}

		if (i == 0)
			b = value;
		else if (i == 1)
			x = value;
		else
			y = value;
	}
	log_debug("mouse input: %.*s", (int) *size, buf);

	/* Check and return the mouse input. */
	if (b < 32 || x < 33 || y < 33)
		return (-1);
	b -= 32;
	x -= 33;
	y -= 33;
	log_debug("mouse position: x=%u y=%u b=%u", x, y, b);

	/* Fill in mouse structure. */
	if (~m->event & MOUSE_EVENT_WHEEL) {
		m->lx = m->x;
		m->ly = m->y;
	}
	m->xb = b;
	if (b & 64) { /* wheel button */
		b &= 3;
		if (b == 0)
			m->wheel = MOUSE_WHEEL_UP;
		else if (b == 1)
			m->wheel = MOUSE_WHEEL_DOWN;
		m->event = MOUSE_EVENT_WHEEL;
	} else if ((b & 3) == 3) {
		if (~m->event & MOUSE_EVENT_DRAG && x == m->x && y == m->y) {
			m->event = MOUSE_EVENT_CLICK;
		} else
			m->event = MOUSE_EVENT_DRAG;
		m->event |= MOUSE_EVENT_UP;
	} else {
		if (b & 32) /* drag motion */
			m->event = MOUSE_EVENT_DRAG;
		else {
			if (m->event & MOUSE_EVENT_UP && x == m->x && y == m->y)
				m->clicks = (m->clicks + 1) % 3;
			else
				m->clicks = 0;
			m->sx = x;
			m->sy = y;
			m->event = MOUSE_EVENT_DOWN;
		}
		m->button = (b & 3);
	}
	m->x = x;
	m->y = y;

	return (0);
}
Exemple #22
0
/* Write string, similar to nputs, but with embedded formatting (#[]). */
void printflike5
screen_write_cnputs(struct screen_write_ctx *ctx,
    ssize_t maxlen, struct grid_cell *gc, int utf8flag, const char *fmt, ...)
{
	struct grid_cell	 lgc;
	struct utf8_data	 utf8data;
	va_list			 ap;
	char			*msg;
	u_char 			*ptr, *last;
	size_t			 left, size = 0;

	va_start(ap, fmt);
	xvasprintf(&msg, fmt, ap);
	va_end(ap);

	memcpy(&lgc, gc, sizeof lgc);

	ptr = msg;
	while (*ptr != '\0') {
		if (ptr[0] == '#' && ptr[1] == '[') {
			ptr += 2;
			last = ptr + strcspn(ptr, "]");
			if (*last == '\0') {
				/* No ]. Not much point in doing anything. */
				break;
			}
			*last = '\0';

			screen_write_parsestyle(gc, &lgc, ptr);
			ptr = last + 1;
			continue;
		}

		if (utf8flag && *ptr > 0x7f && utf8_open(&utf8data, *ptr)) {
			ptr++;

			left = strlen(ptr);
			if (left < utf8data.size - 1)
				break;
			while (utf8_append(&utf8data, *ptr))
				ptr++;
			ptr++;

			if (maxlen > 0 &&
			    size + utf8data.width > (size_t) maxlen) {
				while (size < (size_t) maxlen) {
					screen_write_putc(ctx, gc, ' ');
					size++;
				}
				break;
			}
			size += utf8data.width;

			lgc.flags |= GRID_FLAG_UTF8;
			screen_write_cell(ctx, &lgc, &utf8data);
			lgc.flags &= ~GRID_FLAG_UTF8;
		} else {
			if (maxlen > 0 && size + 1 > (size_t) maxlen)
				break;

			size++;
			screen_write_putc(ctx, &lgc, *ptr);
			ptr++;
		}
	}

	free(msg);
}
Exemple #23
0
/* Write string, similar to nputs, but with embedded formatting (#[]). */
void
screen_write_cnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
    const struct grid_cell *gcp, const char *fmt, ...)
{
	struct grid_cell	 gc;
	struct utf8_data	*ud = &gc.data;
	va_list			 ap;
	char			*msg;
	u_char 			*ptr, *last;
	size_t			 left, size = 0;
	enum utf8_state		 more;

	memcpy(&gc, gcp, sizeof gc);

	va_start(ap, fmt);
	xvasprintf(&msg, fmt, ap);
	va_end(ap);

	ptr = msg;
	while (*ptr != '\0') {
		if (ptr[0] == '#' && ptr[1] == '[') {
			ptr += 2;
			last = ptr + strcspn(ptr, "]");
			if (*last == '\0') {
				/* No ]. Not much point in doing anything. */
				break;
			}
			*last = '\0';

			style_parse(gcp, &gc, ptr);
			ptr = last + 1;
			continue;
		}

		if (*ptr > 0x7f && utf8_open(ud, *ptr) == UTF8_MORE) {
			ptr++;

			left = strlen(ptr);
			if (left < (size_t)ud->size - 1)
				break;
			while ((more = utf8_append(ud, *ptr)) == UTF8_MORE)
				ptr++;
			ptr++;

			if (more != UTF8_DONE)
				continue;
			if (maxlen > 0 && size + ud->width > (size_t)maxlen) {
				while (size < (size_t)maxlen) {
					screen_write_putc(ctx, &gc, ' ');
					size++;
				}
				break;
			}
			size += ud->width;
			screen_write_cell(ctx, &gc);
		} else {
			if (maxlen > 0 && size + 1 > (size_t)maxlen)
				break;

			if (*ptr > 0x1f && *ptr < 0x7f) {
				size++;
				screen_write_putc(ctx, &gc, *ptr);
			}
			ptr++;
		}
	}

	free(msg);
}
Exemple #24
0
/*
 * Handle mouse key input. Returns 0 for success, -1 for failure, 1 for partial
 * (probably a mouse sequence but need more data).
 */
int
tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size)
{
	struct mouse_event	*m = &tty->mouse;
	struct utf8_data	 utf8data;
	u_int			 i, value, x, y, b, sgr, sgr_b, sgr_rel;
	unsigned char		 c;

	/*
	 * Standard mouse sequences are \033[M followed by three characters
	 * indicating button, X and Y, all based at 32 with 1,1 top-left.
	 *
	 * UTF-8 mouse sequences are similar but the three are expressed as
	 * UTF-8 characters.
	 *
	 * SGR extended mouse sequences are \033[< followed by three numbers in
	 * decimal and separated by semicolons indicating button, X and Y. A
	 * trailing 'M' is click or scroll and trailing 'm' release. All are
	 * based at 0 with 1,1 top-left.
	 */

	*size = 0;
	x = y = b = sgr = sgr_b = sgr_rel = 0;

	/* First two bytes are always \033[. */
	if (buf[0] != '\033')
		return (-1);
	if (len == 1)
		return (1);
	if (buf[1] != '[')
		return (-1);
	if (len == 2)
		return (1);

	/*
	 * Third byte is M in old standard and UTF-8 extension, < in SGR
	 * extension.
	 */
	if (buf[2] == 'M') {
		/* Read the three inputs. */
		*size = 3;
		for (i = 0; i < 3; i++) {
			if (len <= *size)
				return (1);

			if (tty->mode & MODE_MOUSE_UTF8) {
				if (utf8_open(&utf8data, buf[*size])) {
					if (utf8data.size != 2)
						return (-1);
					(*size)++;
					if (len <= *size)
						return (1);
					utf8_append(&utf8data, buf[*size]);
					value = utf8_combine(&utf8data);
				} else
					value = (u_char) buf[*size];
				(*size)++;
			} else {
				value = (u_char) buf[*size];
				(*size)++;
			}

			if (i == 0)
				b = value;
			else if (i == 1)
				x = value;
			else
				y = value;
		}
		log_debug("mouse input: %.*s", (int) *size, buf);

		/* Check and return the mouse input. */
		if (b < 32 || x < 33 || y < 33)
			return (-1);
		b -= 32;
		x -= 33;
		y -= 33;
	} else if (buf[2] == '<') {
		/* Read the three inputs. */
		*size = 3;
		while (1) {
			if (len <= *size)
				return (1);
			c = (u_char)buf[(*size)++];
			if (c == ';')
				break;
			if (c < '0' || c > '9')
				return (-1);
			sgr_b = 10 * sgr_b + (c - '0');
		}
		while (1) {
			if (len <= *size)
				return (1);
			c = (u_char)buf[(*size)++];
			if (c == ';')
				break;
			if (c < '0' || c > '9')
				return (-1);
			x = 10 * x + (c - '0');
		}
		while (1) {
			if (len <= *size)
				return (1);
			c = (u_char) buf[(*size)++];
			if (c == 'M' || c == 'm')
				break;
			if (c < '0' || c > '9')
				return (-1);
			y = 10 * y + (c - '0');
		}
		log_debug("mouse input (sgr): %.*s", (int) *size, buf);

		/* Check and return the mouse input. */
		if (x < 1 || y < 1)
			return (-1);
		x--;
		y--;
		sgr = 1;
		sgr_rel = (c == 'm');

		/* Figure out what b would be in old format. */
		b = sgr_b;
		if (sgr_rel)
			b |= 3;
	} else
		return (-1);

	/* Fill in mouse structure. */
	if (~m->event & MOUSE_EVENT_WHEEL) {
		m->lx = m->x;
		m->ly = m->y;
	}
	m->xb = b;
	m->sgr = sgr;
	m->sgr_xb = sgr_b;
	m->sgr_rel = sgr_rel;
	if (b & 64) { /* wheel button */
		b &= 3;
		if (b == 0)
			m->wheel = MOUSE_WHEEL_UP;
		else if (b == 1)
			m->wheel = MOUSE_WHEEL_DOWN;
		m->event = MOUSE_EVENT_WHEEL;
	} else if ((b & 3) == 3) {
		if (~m->event & MOUSE_EVENT_DRAG && x == m->x && y == m->y) {
			m->event = MOUSE_EVENT_CLICK;
		} else
			m->event = MOUSE_EVENT_DRAG;
		m->event |= MOUSE_EVENT_UP;
	} else {
		if (b & 32) /* drag motion */
			m->event = MOUSE_EVENT_DRAG;
		else {
			if (m->event & MOUSE_EVENT_UP && x == m->x && y == m->y)
				m->clicks = (m->clicks + 1) % 3;
			else
				m->clicks = 0;
			m->sx = x;
			m->sy = y;
			m->event = MOUSE_EVENT_DOWN;
		}
		m->button = (b & 3);
	}
	m->x = x;
	m->y = y;

	return (0);
}