key-string.c - tmux - Rivoreo Source Code Repositories

 /* $OpenBSD$ */

 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */

 #include <sys/types.h>

 #include <string.h>

 #include "tmux.h"

 static key_code	key_string_search_table(const char *);
 static key_code	key_string_get_modifiers(const char **);

 static const struct {
 	const char     *string;
 	key_code	key;
 } key_string_table[] = {
 	/* Function keys. */
 	{ "F1",		KEYC_F1 },
 	{ "F2",		KEYC_F2 },
 	{ "F3",		KEYC_F3 },
 	{ "F4",		KEYC_F4 },
 	{ "F5",		KEYC_F5 },
 	{ "F6",		KEYC_F6 },
 	{ "F7",		KEYC_F7 },
 	{ "F8",		KEYC_F8 },
 	{ "F9",		KEYC_F9 },
 	{ "F10",	KEYC_F10 },
 	{ "F11",	KEYC_F11 },
 	{ "F12",	KEYC_F12 },
 	{ "IC",		KEYC_IC },
 	{ "DC",		KEYC_DC },
 	{ "Home",	KEYC_HOME },
 	{ "End",	KEYC_END },
 	{ "NPage",	KEYC_NPAGE },
 	{ "PageDown",	KEYC_NPAGE },
 	{ "PgDn",	KEYC_NPAGE },
 	{ "PPage",	KEYC_PPAGE },
 	{ "PageUp",	KEYC_PPAGE },
 	{ "PgUp",	KEYC_PPAGE },
 	{ "Tab",	'\011' },
 	{ "BTab",	KEYC_BTAB },
 	{ "Space",	' ' },
 	{ "BSpace",	KEYC_BSPACE },
 	{ "Enter",	'\r' },
 	{ "Escape",	'\033' },

 	/* Arrow keys. */
 	{ "Up",		KEYC_UP },
 	{ "Down",	KEYC_DOWN },
 	{ "Left",	KEYC_LEFT },
 	{ "Right",	KEYC_RIGHT },

 	/* Numeric keypad. */
 	{ "KP/", 	KEYC_KP_SLASH },
 	{ "KP*",	KEYC_KP_STAR },
 	{ "KP-",	KEYC_KP_MINUS },
 	{ "KP7",	KEYC_KP_SEVEN },
 	{ "KP8",	KEYC_KP_EIGHT },
 	{ "KP9",	KEYC_KP_NINE },
 	{ "KP+",	KEYC_KP_PLUS },
 	{ "KP4",	KEYC_KP_FOUR },
 	{ "KP5",	KEYC_KP_FIVE },
 	{ "KP6",	KEYC_KP_SIX },
 	{ "KP1",	KEYC_KP_ONE },
 	{ "KP2",	KEYC_KP_TWO },
 	{ "KP3",	KEYC_KP_THREE },
 	{ "KPEnter",	KEYC_KP_ENTER },
 	{ "KP0",	KEYC_KP_ZERO },
 	{ "KP.",	KEYC_KP_PERIOD },

 	/* Mouse keys. */
 	KEYC_MOUSE_STRING(MOUSEDOWN1, MouseDown1),
 	KEYC_MOUSE_STRING(MOUSEDOWN2, MouseDown2),
 	KEYC_MOUSE_STRING(MOUSEDOWN3, MouseDown3),
 	KEYC_MOUSE_STRING(MOUSEUP1, MouseUp1),
 	KEYC_MOUSE_STRING(MOUSEUP2, MouseUp2),
 	KEYC_MOUSE_STRING(MOUSEUP3, MouseUp3),
 	KEYC_MOUSE_STRING(MOUSEDRAG1, MouseDrag1),
 	KEYC_MOUSE_STRING(MOUSEDRAG2, MouseDrag2),
 	KEYC_MOUSE_STRING(MOUSEDRAG3, MouseDrag3),
 	KEYC_MOUSE_STRING(MOUSEDRAGEND1, MouseDragEnd1),
 	KEYC_MOUSE_STRING(MOUSEDRAGEND2, MouseDragEnd2),
 	KEYC_MOUSE_STRING(MOUSEDRAGEND3, MouseDragEnd3),
 	KEYC_MOUSE_STRING(WHEELUP, WheelUp),
 	KEYC_MOUSE_STRING(WHEELDOWN, WheelDown),
 	KEYC_MOUSE_STRING(DOUBLECLICK1, DoubleClick1),
 	KEYC_MOUSE_STRING(DOUBLECLICK2, DoubleClick2),
 	KEYC_MOUSE_STRING(DOUBLECLICK3, DoubleClick3),
 	KEYC_MOUSE_STRING(TRIPLECLICK1, TripleClick1),
 	KEYC_MOUSE_STRING(TRIPLECLICK2, TripleClick2),
 	KEYC_MOUSE_STRING(TRIPLECLICK3, TripleClick3),
 };

 /* Find key string in table. */
 static key_code
 key_string_search_table(const char *string)
 {
 	u_int	i;

 	for (i = 0; i < nitems(key_string_table); i++) {
 		if (strcasecmp(string, key_string_table[i].string) == 0)
 			return (key_string_table[i].key);
 	}
 	return (KEYC_UNKNOWN);
 }

 /* Find modifiers. */
 static key_code
 key_string_get_modifiers(const char **string)
 {
 	key_code	modifiers;

 	modifiers = 0;
 	while (((*string)[0] != '\0') && (*string)[1] == '-') {
 		switch ((*string)[0]) {
 		case 'C':
 		case 'c':
 			modifiers |= KEYC_CTRL;
 			break;
 		case 'M':
 		case 'm':
 			modifiers |= KEYC_ESCAPE;
 			break;
 		case 'S':
 		case 's':
 			modifiers |= KEYC_SHIFT;
 			break;
 		default:
 			*string = NULL;
 			return (0);
 		}
 		*string += 2;
 	}
 	return (modifiers);
 }

 /* 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_int			 u;
 	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, "%x", &u) != 1)
 	                return (KEYC_UNKNOWN);
 		if (u > 0x1fffff)
 	                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 == NULL || 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);
 }

 /* Convert a key code into string format, with prefix if necessary. */
 const char *
 key_string_lookup_key(key_code key)
 {
 	static char		out[32];
 	char			tmp[8];
 	u_int			i;
 	struct utf8_data	ud;
 	size_t			off;

 	*out = '\0';

 	/* Handle no key. */
 	if (key == KEYC_NONE)
 		return ("None");

 	/* Handle special keys. */
 	if (key == KEYC_UNKNOWN)
 		return ("Unknown");
 	if (key == KEYC_FOCUS_IN)
 		return ("FocusIn");
 	if (key == KEYC_FOCUS_OUT)
 		return ("FocusOut");
 	if (key == KEYC_PASTE_START)
 		return ("PasteStart");
 	if (key == KEYC_PASTE_END)
 		return ("PasteEnd");
 	if (key == KEYC_MOUSE)
 		return ("Mouse");
 	if (key == KEYC_DRAGGING)
 		return ("Dragging");
 	if (key == KEYC_MOUSEMOVE_PANE)
 		return ("MouseMovePane");
 	if (key == KEYC_MOUSEMOVE_STATUS)
 		return ("MouseMoveStatus");
 	if (key == KEYC_MOUSEMOVE_BORDER)
 		return ("MouseMoveBorder");

 	/*
 	 * Special case: display C-@ as C-Space. Could do this below in
 	 * the (key >= 0 && key <= 32), but this way we let it be found
 	 * in key_string_table, for the unlikely chance that we might
 	 * change its name.
 	 */
 	if ((key & KEYC_MASK_KEY) == 0)
 	    key = ' ' | KEYC_CTRL | (key & KEYC_MASK_MOD);

 	/* Fill in the modifiers. */
 	if (key & KEYC_CTRL)
 		strlcat(out, "C-", sizeof out);
 	if (key & KEYC_ESCAPE)
 		strlcat(out, "M-", sizeof out);
 	if (key & KEYC_SHIFT)
 		strlcat(out, "S-", sizeof out);
 	key &= KEYC_MASK_KEY;

 	/* Try the key against the string table. */
 	for (i = 0; i < nitems(key_string_table); i++) {
 		if (key == key_string_table[i].key)
 			break;
 	}
 	if (i != nitems(key_string_table)) {
 		strlcat(out, key_string_table[i].string, sizeof out);
 		return (out);
 	}

 	/* Is this a UTF-8 key? */
 	if (key > 127 && key < KEYC_BASE) {
 		if (utf8_split(key, &ud) == UTF8_DONE) {
 			off = strlen(out);
 			memcpy(out + off, ud.data, ud.size);
 			out[off + ud.size] = '\0';
 			return (out);
 		}
 	}

 	/* Invalid keys are errors. */
 	if (key == 127 || key > 255) {
 		snprintf(out, sizeof out, "Invalid#%llx", key);
 		return (out);
 	}

 	/* Check for standard or control key. */
 	if (key <= 32) {
 		if (key == 0 || key > 26)
 			xsnprintf(tmp, sizeof tmp, "C-%c", (int)(64 + key));
 		else
 			xsnprintf(tmp, sizeof tmp, "C-%c", (int)(96 + key));
 	} else if (key >= 32 && key <= 126) {
 		tmp[0] = key;
 		tmp[1] = '\0';
 	} else if (key >= 128)
 		xsnprintf(tmp, sizeof tmp, "\\%llo", key);

 	strlcat(out, tmp, sizeof out);
 	return (out);
 }
	/* $OpenBSD$ */

	/*
	* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
	*
	* Permission to use, copy, modify, and distribute this software for any
	* purpose with or without fee is hereby granted, provided that the above
	* copyright notice and this permission notice appear in all copies.
	*
	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
	* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
	* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	*/

	#include <sys/types.h>

	#include <string.h>

	#include "tmux.h"

	static key_code key_string_search_table(const char *);
	static key_code key_string_get_modifiers(const char **);

	static const struct {
	const char *string;
	key_code key;
	} key_string_table[] = {
	/* Function keys. */
	{ "F1", KEYC_F1 },
	{ "F2", KEYC_F2 },
	{ "F3", KEYC_F3 },
	{ "F4", KEYC_F4 },
	{ "F5", KEYC_F5 },
	{ "F6", KEYC_F6 },
	{ "F7", KEYC_F7 },
	{ "F8", KEYC_F8 },
	{ "F9", KEYC_F9 },
	{ "F10", KEYC_F10 },
	{ "F11", KEYC_F11 },
	{ "F12", KEYC_F12 },
	{ "IC", KEYC_IC },
	{ "DC", KEYC_DC },
	{ "Home", KEYC_HOME },
	{ "End", KEYC_END },
	{ "NPage", KEYC_NPAGE },
	{ "PageDown", KEYC_NPAGE },
	{ "PgDn", KEYC_NPAGE },
	{ "PPage", KEYC_PPAGE },
	{ "PageUp", KEYC_PPAGE },
	{ "PgUp", KEYC_PPAGE },
	{ "Tab", '\011' },
	{ "BTab", KEYC_BTAB },
	{ "Space", ' ' },
	{ "BSpace", KEYC_BSPACE },
	{ "Enter", '\r' },
	{ "Escape", '\033' },

	/* Arrow keys. */
	{ "Up", KEYC_UP },
	{ "Down", KEYC_DOWN },
	{ "Left", KEYC_LEFT },
	{ "Right", KEYC_RIGHT },

	/* Numeric keypad. */
	{ "KP/", KEYC_KP_SLASH },
	{ "KP*", KEYC_KP_STAR },
	{ "KP-", KEYC_KP_MINUS },
	{ "KP7", KEYC_KP_SEVEN },
	{ "KP8", KEYC_KP_EIGHT },
	{ "KP9", KEYC_KP_NINE },
	{ "KP+", KEYC_KP_PLUS },
	{ "KP4", KEYC_KP_FOUR },
	{ "KP5", KEYC_KP_FIVE },
	{ "KP6", KEYC_KP_SIX },
	{ "KP1", KEYC_KP_ONE },
	{ "KP2", KEYC_KP_TWO },
	{ "KP3", KEYC_KP_THREE },
	{ "KPEnter", KEYC_KP_ENTER },
	{ "KP0", KEYC_KP_ZERO },
	{ "KP.", KEYC_KP_PERIOD },

	/* Mouse keys. */
	KEYC_MOUSE_STRING(MOUSEDOWN1, MouseDown1),
	KEYC_MOUSE_STRING(MOUSEDOWN2, MouseDown2),
	KEYC_MOUSE_STRING(MOUSEDOWN3, MouseDown3),
	KEYC_MOUSE_STRING(MOUSEUP1, MouseUp1),
	KEYC_MOUSE_STRING(MOUSEUP2, MouseUp2),
	KEYC_MOUSE_STRING(MOUSEUP3, MouseUp3),
	KEYC_MOUSE_STRING(MOUSEDRAG1, MouseDrag1),
	KEYC_MOUSE_STRING(MOUSEDRAG2, MouseDrag2),
	KEYC_MOUSE_STRING(MOUSEDRAG3, MouseDrag3),
	KEYC_MOUSE_STRING(MOUSEDRAGEND1, MouseDragEnd1),
	KEYC_MOUSE_STRING(MOUSEDRAGEND2, MouseDragEnd2),
	KEYC_MOUSE_STRING(MOUSEDRAGEND3, MouseDragEnd3),
	KEYC_MOUSE_STRING(WHEELUP, WheelUp),
	KEYC_MOUSE_STRING(WHEELDOWN, WheelDown),
	KEYC_MOUSE_STRING(DOUBLECLICK1, DoubleClick1),
	KEYC_MOUSE_STRING(DOUBLECLICK2, DoubleClick2),
	KEYC_MOUSE_STRING(DOUBLECLICK3, DoubleClick3),
	KEYC_MOUSE_STRING(TRIPLECLICK1, TripleClick1),
	KEYC_MOUSE_STRING(TRIPLECLICK2, TripleClick2),
	KEYC_MOUSE_STRING(TRIPLECLICK3, TripleClick3),
	};

	/* Find key string in table. */
	static key_code
	key_string_search_table(const char *string)
	{
	u_int i;

	for (i = 0; i < nitems(key_string_table); i++) {
	if (strcasecmp(string, key_string_table[i].string) == 0)
	return (key_string_table[i].key);
	}
	return (KEYC_UNKNOWN);
	}

	/* Find modifiers. */
	static key_code
	key_string_get_modifiers(const char **string)
	{
	key_code modifiers;

	modifiers = 0;
	while (((string)[0] != '\0') && (string)[1] == '-') {
	switch ((*string)[0]) {
	case 'C':
	case 'c':
	modifiers \|= KEYC_CTRL;
	break;
	case 'M':
	case 'm':
	modifiers \|= KEYC_ESCAPE;
	break;
	case 'S':
	case 's':
	modifiers \|= KEYC_SHIFT;
	break;
	default:
	*string = NULL;
	return (0);
	}
	*string += 2;
	}
	return (modifiers);
	}

	/* 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_int u;
	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, "%x", &u) != 1)
	return (KEYC_UNKNOWN);
	if (u > 0x1fffff)
	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 == NULL \|\| 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);
	}

	/* Convert a key code into string format, with prefix if necessary. */
	const char *
	key_string_lookup_key(key_code key)
	{
	static char out[32];
	char tmp[8];
	u_int i;
	struct utf8_data ud;
	size_t off;

	*out = '\0';

	/* Handle no key. */
	if (key == KEYC_NONE)
	return ("None");

	/* Handle special keys. */
	if (key == KEYC_UNKNOWN)
	return ("Unknown");
	if (key == KEYC_FOCUS_IN)
	return ("FocusIn");
	if (key == KEYC_FOCUS_OUT)
	return ("FocusOut");
	if (key == KEYC_PASTE_START)
	return ("PasteStart");
	if (key == KEYC_PASTE_END)
	return ("PasteEnd");
	if (key == KEYC_MOUSE)
	return ("Mouse");
	if (key == KEYC_DRAGGING)
	return ("Dragging");
	if (key == KEYC_MOUSEMOVE_PANE)
	return ("MouseMovePane");
	if (key == KEYC_MOUSEMOVE_STATUS)
	return ("MouseMoveStatus");
	if (key == KEYC_MOUSEMOVE_BORDER)
	return ("MouseMoveBorder");

	/*
	* Special case: display C-@ as C-Space. Could do this below in
	* the (key >= 0 && key <= 32), but this way we let it be found
	* in key_string_table, for the unlikely chance that we might
	* change its name.
	*/
	if ((key & KEYC_MASK_KEY) == 0)
	key = ' ' \| KEYC_CTRL \| (key & KEYC_MASK_MOD);

	/* Fill in the modifiers. */
	if (key & KEYC_CTRL)
	strlcat(out, "C-", sizeof out);
	if (key & KEYC_ESCAPE)
	strlcat(out, "M-", sizeof out);
	if (key & KEYC_SHIFT)
	strlcat(out, "S-", sizeof out);
	key &= KEYC_MASK_KEY;

	/* Try the key against the string table. */
	for (i = 0; i < nitems(key_string_table); i++) {
	if (key == key_string_table[i].key)
	break;
	}
	if (i != nitems(key_string_table)) {
	strlcat(out, key_string_table[i].string, sizeof out);
	return (out);
	}

	/* Is this a UTF-8 key? */
	if (key > 127 && key < KEYC_BASE) {
	if (utf8_split(key, &ud) == UTF8_DONE) {
	off = strlen(out);
	memcpy(out + off, ud.data, ud.size);
	out[off + ud.size] = '\0';
	return (out);
	}
	}

	/* Invalid keys are errors. */
	if (key == 127 \|\| key > 255) {
	snprintf(out, sizeof out, "Invalid#%llx", key);
	return (out);
	}

	/* Check for standard or control key. */
	if (key <= 32) {
	if (key == 0 \|\| key > 26)
	xsnprintf(tmp, sizeof tmp, "C-%c", (int)(64 + key));
	else
	xsnprintf(tmp, sizeof tmp, "C-%c", (int)(96 + key));
	} else if (key >= 32 && key <= 126) {
	tmp[0] = key;
	tmp[1] = '\0';
	} else if (key >= 128)
	xsnprintf(tmp, sizeof tmp, "\\%llo", key);

	strlcat(out, tmp, sizeof out);
	return (out);
	}