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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/tmux/key-string.c	Lines:	0	125	0.0 %
Date:	2017-11-13	Branches:	0	119	0.0 %


/* $OpenBSD: key-string.c,v 1.47 2017/06/23 15:36:52 nicm Exp $ */

/*
 * 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, user;

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

	if (sscanf(string, "User%u", &user) == 1 && user < KEYC_NUSER)
		return (KEYC_USER + user);

	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");
	if (key >= KEYC_USER && key < KEYC_USER + KEYC_NUSER) {
		snprintf(out, sizeof out, "User%u", (u_int)(key - KEYC_USER));
		return (out);
	}

	/*
	 * 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);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: key-string.c,v 1.47 2017/06/23 15:36:52 nicm Exp $ */
2
3			/*
4			* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
5			*
6			* Permission to use, copy, modify, and distribute this software for any
7			* purpose with or without fee is hereby granted, provided that the above
8			* copyright notice and this permission notice appear in all copies.
9			*
10			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14			* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15			* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16			* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17			*/
18
19			#include <sys/types.h>
20
21			#include <string.h>
22
23			#include "tmux.h"
24
25			static key_code key_string_search_table(const char *);
26			static key_code key_string_get_modifiers(const char **);
27
28			static const struct {
29			const char *string;
30			key_code key;
31			} key_string_table[] = {
32			/* Function keys. */
33			{ "F1", KEYC_F1 },
34			{ "F2", KEYC_F2 },
35			{ "F3", KEYC_F3 },
36			{ "F4", KEYC_F4 },
37			{ "F5", KEYC_F5 },
38			{ "F6", KEYC_F6 },
39			{ "F7", KEYC_F7 },
40			{ "F8", KEYC_F8 },
41			{ "F9", KEYC_F9 },
42			{ "F10", KEYC_F10 },
43			{ "F11", KEYC_F11 },
44			{ "F12", KEYC_F12 },
45			{ "IC", KEYC_IC },
46			{ "DC", KEYC_DC },
47			{ "Home", KEYC_HOME },
48			{ "End", KEYC_END },
49			{ "NPage", KEYC_NPAGE },
50			{ "PageDown", KEYC_NPAGE },
51			{ "PgDn", KEYC_NPAGE },
52			{ "PPage", KEYC_PPAGE },
53			{ "PageUp", KEYC_PPAGE },
54			{ "PgUp", KEYC_PPAGE },
55			{ "Tab", '\011' },
56			{ "BTab", KEYC_BTAB },
57			{ "Space", ' ' },
58			{ "BSpace", KEYC_BSPACE },
59			{ "Enter", '\r' },
60			{ "Escape", '\033' },
61
62			/* Arrow keys. */
63			{ "Up", KEYC_UP },
64			{ "Down", KEYC_DOWN },
65			{ "Left", KEYC_LEFT },
66			{ "Right", KEYC_RIGHT },
67
68			/* Numeric keypad. */
69			{ "KP/", KEYC_KP_SLASH },
70			{ "KP*", KEYC_KP_STAR },
71			{ "KP-", KEYC_KP_MINUS },
72			{ "KP7", KEYC_KP_SEVEN },
73			{ "KP8", KEYC_KP_EIGHT },
74			{ "KP9", KEYC_KP_NINE },
75			{ "KP+", KEYC_KP_PLUS },
76			{ "KP4", KEYC_KP_FOUR },
77			{ "KP5", KEYC_KP_FIVE },
78			{ "KP6", KEYC_KP_SIX },
79			{ "KP1", KEYC_KP_ONE },
80			{ "KP2", KEYC_KP_TWO },
81			{ "KP3", KEYC_KP_THREE },
82			{ "KPEnter", KEYC_KP_ENTER },
83			{ "KP0", KEYC_KP_ZERO },
84			{ "KP.", KEYC_KP_PERIOD },
85
86			/* Mouse keys. */
87			KEYC_MOUSE_STRING(MOUSEDOWN1, MouseDown1),
88			KEYC_MOUSE_STRING(MOUSEDOWN2, MouseDown2),
89			KEYC_MOUSE_STRING(MOUSEDOWN3, MouseDown3),
90			KEYC_MOUSE_STRING(MOUSEUP1, MouseUp1),
91			KEYC_MOUSE_STRING(MOUSEUP2, MouseUp2),
92			KEYC_MOUSE_STRING(MOUSEUP3, MouseUp3),
93			KEYC_MOUSE_STRING(MOUSEDRAG1, MouseDrag1),
94			KEYC_MOUSE_STRING(MOUSEDRAG2, MouseDrag2),
95			KEYC_MOUSE_STRING(MOUSEDRAG3, MouseDrag3),
96			KEYC_MOUSE_STRING(MOUSEDRAGEND1, MouseDragEnd1),
97			KEYC_MOUSE_STRING(MOUSEDRAGEND2, MouseDragEnd2),
98			KEYC_MOUSE_STRING(MOUSEDRAGEND3, MouseDragEnd3),
99			KEYC_MOUSE_STRING(WHEELUP, WheelUp),
100			KEYC_MOUSE_STRING(WHEELDOWN, WheelDown),
101			KEYC_MOUSE_STRING(DOUBLECLICK1, DoubleClick1),
102			KEYC_MOUSE_STRING(DOUBLECLICK2, DoubleClick2),
103			KEYC_MOUSE_STRING(DOUBLECLICK3, DoubleClick3),
104			KEYC_MOUSE_STRING(TRIPLECLICK1, TripleClick1),
105			KEYC_MOUSE_STRING(TRIPLECLICK2, TripleClick2),
106			KEYC_MOUSE_STRING(TRIPLECLICK3, TripleClick3),
107			};
108
109			/* Find key string in table. */
110			static key_code
111			key_string_search_table(const char *string)
112			{
113			u_int i, user;
114
115			for (i = 0; i < nitems(key_string_table); i++) {
116			if (strcasecmp(string, key_string_table[i].string) == 0)
117			return (key_string_table[i].key);
118			}
119
120			if (sscanf(string, "User%u", &user) == 1 && user < KEYC_NUSER)
121			return (KEYC_USER + user);
122
123			return (KEYC_UNKNOWN);
124			}
125
126			/* Find modifiers. */
127			static key_code
128			key_string_get_modifiers(const char **string)
129			{
130			key_code modifiers;
131
132			modifiers = 0;
133			while (((string)[0] != '\0') && (string)[1] == '-') {
134			switch ((*string)[0]) {
135			case 'C':
136			case 'c':
137			modifiers \|= KEYC_CTRL;
138			break;
139			case 'M':
140			case 'm':
141			modifiers \|= KEYC_ESCAPE;
142			break;
143			case 'S':
144			case 's':
145			modifiers \|= KEYC_SHIFT;
146			break;
147			default:
148			*string = NULL;
149			return (0);
150			}
151			*string += 2;
152			}
153			return (modifiers);
154			}
155
156			/* Lookup a string and convert to a key value. */
157			key_code
158			key_string_lookup_string(const char *string)
159			{
160			static const char *other = "!#()+,-.0123456789:;<=>?'\r\t";
161			key_code key;
162			u_int u;
163			key_code modifiers;
164			struct utf8_data ud;
165			u_int i;
166			enum utf8_state more;
167			wchar_t wc;
168
169			/* Is this no key? */
170			if (strcasecmp(string, "None") == 0)
171			return (KEYC_NONE);
172
173			/* Is this a hexadecimal value? */
174			if (string[0] == '0' && string[1] == 'x') {
175			if (sscanf(string + 2, "%x", &u) != 1)
176			return (KEYC_UNKNOWN);
177			if (u > 0x1fffff)
178			return (KEYC_UNKNOWN);
179			return (u);
180			}
181
182			/* Check for modifiers. */
183			modifiers = 0;
184			if (string[0] == '^' && string[1] != '\0') {
185			modifiers \|= KEYC_CTRL;
186			string++;
187			}
188			modifiers \|= key_string_get_modifiers(&string);
189			if (string == NULL \|\| string[0] == '\0')
190			return (KEYC_UNKNOWN);
191
192			/* Is this a standard ASCII key? */
193			if (string[1] == '\0' && (u_char)string[0] <= 127) {
194			key = (u_char)string[0];
195			if (key < 32 \|\| key == 127)
196			return (KEYC_UNKNOWN);
197			} else {
198			/* Try as a UTF-8 key. */
199			if ((more = utf8_open(&ud, (u_char)*string)) == UTF8_MORE) {
200			if (strlen(string) != ud.size)
201			return (KEYC_UNKNOWN);
202			for (i = 1; i < ud.size; i++)
203			more = utf8_append(&ud, (u_char)string[i]);
204			if (more != UTF8_DONE)
205			return (KEYC_UNKNOWN);
206			if (utf8_combine(&ud, &wc) != UTF8_DONE)
207			return (KEYC_UNKNOWN);
208			return (wc \| modifiers);
209			}
210
211			/* Otherwise look the key up in the table. */
212			key = key_string_search_table(string);
213			if (key == KEYC_UNKNOWN)
214			return (KEYC_UNKNOWN);
215			}
216
217			/* Convert the standard control keys. */
218			if (key < KEYC_BASE && (modifiers & KEYC_CTRL) && !strchr(other, key)) {
219			if (key >= 97 && key <= 122)
220			key -= 96;
221			else if (key >= 64 && key <= 95)
222			key -= 64;
223			else if (key == 32)
224			key = 0;
225			else if (key == 63)
226			key = KEYC_BSPACE;
227			else
228			return (KEYC_UNKNOWN);
229			modifiers &= ~KEYC_CTRL;
230			}
231
232			return (key \| modifiers);
233			}
234
235			/* Convert a key code into string format, with prefix if necessary. */
236			const char *
237			key_string_lookup_key(key_code key)
238			{
239			static char out[32];
240			char tmp[8];
241			u_int i;
242			struct utf8_data ud;
243			size_t off;
244
245			*out = '\0';
246
247			/* Handle no key. */
248			if (key == KEYC_NONE)
249			return ("None");
250
251			/* Handle special keys. */
252			if (key == KEYC_UNKNOWN)
253			return ("Unknown");
254			if (key == KEYC_FOCUS_IN)
255			return ("FocusIn");
256			if (key == KEYC_FOCUS_OUT)
257			return ("FocusOut");
258			if (key == KEYC_PASTE_START)
259			return ("PasteStart");
260			if (key == KEYC_PASTE_END)
261			return ("PasteEnd");
262			if (key == KEYC_MOUSE)
263			return ("Mouse");
264			if (key == KEYC_DRAGGING)
265			return ("Dragging");
266			if (key == KEYC_MOUSEMOVE_PANE)
267			return ("MouseMovePane");
268			if (key == KEYC_MOUSEMOVE_STATUS)
269			return ("MouseMoveStatus");
270			if (key == KEYC_MOUSEMOVE_BORDER)
271			return ("MouseMoveBorder");
272			if (key >= KEYC_USER && key < KEYC_USER + KEYC_NUSER) {
273			snprintf(out, sizeof out, "User%u", (u_int)(key - KEYC_USER));
274			return (out);
275			}
276
277			/*
278			* Special case: display C-@ as C-Space. Could do this below in
279			* the (key >= 0 && key <= 32), but this way we let it be found
280			* in key_string_table, for the unlikely chance that we might
281			* change its name.
282			*/
283			if ((key & KEYC_MASK_KEY) == 0)
284			key = ' ' \| KEYC_CTRL \| (key & KEYC_MASK_MOD);
285
286			/* Fill in the modifiers. */
287			if (key & KEYC_CTRL)
288			strlcat(out, "C-", sizeof out);
289			if (key & KEYC_ESCAPE)
290			strlcat(out, "M-", sizeof out);
291			if (key & KEYC_SHIFT)
292			strlcat(out, "S-", sizeof out);
293			key &= KEYC_MASK_KEY;
294
295			/* Try the key against the string table. */
296			for (i = 0; i < nitems(key_string_table); i++) {
297			if (key == key_string_table[i].key)
298			break;
299			}
300			if (i != nitems(key_string_table)) {
301			strlcat(out, key_string_table[i].string, sizeof out);
302			return (out);
303			}
304
305			/* Is this a UTF-8 key? */
306			if (key > 127 && key < KEYC_BASE) {
307			if (utf8_split(key, &ud) == UTF8_DONE) {
308			off = strlen(out);
309			memcpy(out + off, ud.data, ud.size);
310			out[off + ud.size] = '\0';
311			return (out);
312			}
313			}
314
315			/* Invalid keys are errors. */
316			if (key == 127 \|\| key > 255) {
317			snprintf(out, sizeof out, "Invalid#%llx", key);
318			return (out);
319			}
320
321			/* Check for standard or control key. */
322			if (key <= 32) {
323			if (key == 0 \|\| key > 26)
324			xsnprintf(tmp, sizeof tmp, "C-%c", (int)(64 + key));
325			else
326			xsnprintf(tmp, sizeof tmp, "C-%c", (int)(96 + key));
327			} else if (key >= 32 && key <= 126) {
328			tmp[0] = key;
329			tmp[1] = '\0';
330			} else if (key >= 128)
331			xsnprintf(tmp, sizeof tmp, "\\%llo", key);
332
333			strlcat(out, tmp, sizeof out);
334			return (out);
335			}