1: /* $OpenBSD$ */
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;
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: return (KEYC_UNKNOWN);
120: }
121:
122: /* Find modifiers. */
123: static key_code
124: key_string_get_modifiers(const char **string)
125: {
126: key_code modifiers;
127:
128: modifiers = 0;
129: while (((*string)[0] != '\0') && (*string)[1] == '-') {
130: switch ((*string)[0]) {
131: case 'C':
132: case 'c':
133: modifiers |= KEYC_CTRL;
134: break;
135: case 'M':
136: case 'm':
137: modifiers |= KEYC_ESCAPE;
138: break;
139: case 'S':
140: case 's':
141: modifiers |= KEYC_SHIFT;
142: break;
143: default:
144: *string = NULL;
145: return (0);
146: }
147: *string += 2;
148: }
149: return (modifiers);
150: }
151:
152: /* Lookup a string and convert to a key value. */
153: key_code
154: key_string_lookup_string(const char *string)
155: {
156: static const char *other = "!#()+,-.0123456789:;<=>?'\r\t";
157: key_code key;
158: u_int u;
159: key_code modifiers;
160: struct utf8_data ud;
161: u_int i;
162: enum utf8_state more;
163: wchar_t wc;
164:
165: /* Is this no key? */
166: if (strcasecmp(string, "None") == 0)
167: return (KEYC_NONE);
168:
169: /* Is this a hexadecimal value? */
170: if (string[0] == '0' && string[1] == 'x') {
171: if (sscanf(string + 2, "%x", &u) != 1)
172: return (KEYC_UNKNOWN);
173: if (u > 0x1fffff)
174: return (KEYC_UNKNOWN);
175: return (u);
176: }
177:
178: /* Check for modifiers. */
179: modifiers = 0;
180: if (string[0] == '^' && string[1] != '\0') {
181: modifiers |= KEYC_CTRL;
182: string++;
183: }
184: modifiers |= key_string_get_modifiers(&string);
185: if (string == NULL || string[0] == '\0')
186: return (KEYC_UNKNOWN);
187:
188: /* Is this a standard ASCII key? */
189: if (string[1] == '\0' && (u_char)string[0] <= 127) {
190: key = (u_char)string[0];
191: if (key < 32 || key == 127)
192: return (KEYC_UNKNOWN);
193: } else {
194: /* Try as a UTF-8 key. */
195: if ((more = utf8_open(&ud, (u_char)*string)) == UTF8_MORE) {
196: if (strlen(string) != ud.size)
197: return (KEYC_UNKNOWN);
198: for (i = 1; i < ud.size; i++)
199: more = utf8_append(&ud, (u_char)string[i]);
200: if (more != UTF8_DONE)
201: return (KEYC_UNKNOWN);
202: if (utf8_combine(&ud, &wc) != UTF8_DONE)
203: return (KEYC_UNKNOWN);
204: return (wc | modifiers);
205: }
206:
207: /* Otherwise look the key up in the table. */
208: key = key_string_search_table(string);
209: if (key == KEYC_UNKNOWN)
210: return (KEYC_UNKNOWN);
211: }
212:
213: /* Convert the standard control keys. */
214: if (key < KEYC_BASE && (modifiers & KEYC_CTRL) && !strchr(other, key)) {
215: if (key >= 97 && key <= 122)
216: key -= 96;
217: else if (key >= 64 && key <= 95)
218: key -= 64;
219: else if (key == 32)
220: key = 0;
221: else if (key == 63)
222: key = KEYC_BSPACE;
223: else
224: return (KEYC_UNKNOWN);
225: modifiers &= ~KEYC_CTRL;
226: }
227:
228: return (key | modifiers);
229: }
230:
231: /* Convert a key code into string format, with prefix if necessary. */
232: const char *
233: key_string_lookup_key(key_code key)
234: {
235: static char out[32];
236: char tmp[8];
237: u_int i;
238: struct utf8_data ud;
239: size_t off;
240:
241: *out = '\0';
242:
243: /* Handle no key. */
244: if (key == KEYC_NONE)
245: return ("None");
246:
247: /* Handle special keys. */
248: if (key == KEYC_UNKNOWN)
249: return ("Unknown");
250: if (key == KEYC_FOCUS_IN)
251: return ("FocusIn");
252: if (key == KEYC_FOCUS_OUT)
253: return ("FocusOut");
254: if (key == KEYC_MOUSE)
255: return ("Mouse");
256: if (key == KEYC_DRAGGING)
257: return ("Dragging");
258: if (key == KEYC_MOUSEMOVE_PANE)
259: return ("MouseMovePane");
260: if (key == KEYC_MOUSEMOVE_STATUS)
261: return ("MouseMoveStatus");
262: if (key == KEYC_MOUSEMOVE_BORDER)
263: return ("MouseMoveBorder");
264:
265: /*
266: * Special case: display C-@ as C-Space. Could do this below in
267: * the (key >= 0 && key <= 32), but this way we let it be found
268: * in key_string_table, for the unlikely chance that we might
269: * change its name.
270: */
271: if ((key & KEYC_MASK_KEY) == 0)
272: key = ' ' | KEYC_CTRL | (key & KEYC_MASK_MOD);
273:
274: /* Fill in the modifiers. */
275: if (key & KEYC_CTRL)
276: strlcat(out, "C-", sizeof out);
277: if (key & KEYC_ESCAPE)
278: strlcat(out, "M-", sizeof out);
279: if (key & KEYC_SHIFT)
280: strlcat(out, "S-", sizeof out);
281: key &= KEYC_MASK_KEY;
282:
283: /* Try the key against the string table. */
284: for (i = 0; i < nitems(key_string_table); i++) {
285: if (key == key_string_table[i].key)
286: break;
287: }
288: if (i != nitems(key_string_table)) {
289: strlcat(out, key_string_table[i].string, sizeof out);
290: return (out);
291: }
292:
293: /* Is this a UTF-8 key? */
294: if (key > 127 && key < KEYC_BASE) {
295: if (utf8_split(key, &ud) == UTF8_DONE) {
296: off = strlen(out);
297: memcpy(out + off, ud.data, ud.size);
298: out[off + ud.size] = '\0';
299: return (out);
300: }
301: }
302:
303: /* Invalid keys are errors. */
304: if (key == 127 || key > 255) {
305: snprintf(out, sizeof out, "Invalid#%llx", key);
306: return (out);
307: }
308:
309: /* Check for standard or control key. */
310: if (key <= 32) {
311: if (key == 0 || key > 26)
312: xsnprintf(tmp, sizeof tmp, "C-%c", (int)(64 + key));
313: else
314: xsnprintf(tmp, sizeof tmp, "C-%c", (int)(96 + key));
315: } else if (key >= 32 && key <= 126) {
316: tmp[0] = key;
317: tmp[1] = '\0';
318: } else if (key >= 128)
319: xsnprintf(tmp, sizeof tmp, "\\%llo", key);
320:
321: strlcat(out, tmp, sizeof out);
322: return (out);
323: }
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