Annotation of src/usr.bin/tmux/key-string.c, Revision 1.56
1.56 ! nicm 1: /* $OpenBSD: key-string.c,v 1.55 2020/03/31 11:38:35 nicm Exp $ */
1.1 nicm 2:
3: /*
1.34 nicm 4: * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 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:
1.33 nicm 25: static key_code key_string_search_table(const char *);
26: static key_code key_string_get_modifiers(const char **);
1.1 nicm 27:
1.39 nicm 28: static const struct {
1.14 nicm 29: const char *string;
1.28 nicm 30: key_code key;
1.1 nicm 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 },
1.50 nicm 46: { "Insert", KEYC_IC },
1.1 nicm 47: { "DC", KEYC_DC },
1.50 nicm 48: { "Delete", KEYC_DC },
1.1 nicm 49: { "Home", KEYC_HOME },
50: { "End", KEYC_END },
51: { "NPage", KEYC_NPAGE },
1.21 nicm 52: { "PageDown", KEYC_NPAGE },
53: { "PgDn", KEYC_NPAGE },
1.1 nicm 54: { "PPage", KEYC_PPAGE },
1.21 nicm 55: { "PageUp", KEYC_PPAGE },
56: { "PgUp", KEYC_PPAGE },
1.1 nicm 57: { "Tab", '\011' },
58: { "BTab", KEYC_BTAB },
1.7 nicm 59: { "Space", ' ' },
1.5 nicm 60: { "BSpace", KEYC_BSPACE },
1.6 nicm 61: { "Enter", '\r' },
62: { "Escape", '\033' },
1.1 nicm 63:
64: /* Arrow keys. */
65: { "Up", KEYC_UP },
66: { "Down", KEYC_DOWN },
67: { "Left", KEYC_LEFT },
68: { "Right", KEYC_RIGHT },
69:
70: /* Numeric keypad. */
1.9 nicm 71: { "KP/", KEYC_KP_SLASH },
72: { "KP*", KEYC_KP_STAR },
73: { "KP-", KEYC_KP_MINUS },
74: { "KP7", KEYC_KP_SEVEN },
75: { "KP8", KEYC_KP_EIGHT },
76: { "KP9", KEYC_KP_NINE },
77: { "KP+", KEYC_KP_PLUS },
78: { "KP4", KEYC_KP_FOUR },
79: { "KP5", KEYC_KP_FIVE },
80: { "KP6", KEYC_KP_SIX },
81: { "KP1", KEYC_KP_ONE },
82: { "KP2", KEYC_KP_TWO },
83: { "KP3", KEYC_KP_THREE },
84: { "KPEnter", KEYC_KP_ENTER },
85: { "KP0", KEYC_KP_ZERO },
86: { "KP.", KEYC_KP_PERIOD },
1.26 nicm 87:
88: /* Mouse keys. */
89: KEYC_MOUSE_STRING(MOUSEDOWN1, MouseDown1),
90: KEYC_MOUSE_STRING(MOUSEDOWN2, MouseDown2),
91: KEYC_MOUSE_STRING(MOUSEDOWN3, MouseDown3),
92: KEYC_MOUSE_STRING(MOUSEUP1, MouseUp1),
93: KEYC_MOUSE_STRING(MOUSEUP2, MouseUp2),
94: KEYC_MOUSE_STRING(MOUSEUP3, MouseUp3),
95: KEYC_MOUSE_STRING(MOUSEDRAG1, MouseDrag1),
96: KEYC_MOUSE_STRING(MOUSEDRAG2, MouseDrag2),
97: KEYC_MOUSE_STRING(MOUSEDRAG3, MouseDrag3),
1.36 nicm 98: KEYC_MOUSE_STRING(MOUSEDRAGEND1, MouseDragEnd1),
99: KEYC_MOUSE_STRING(MOUSEDRAGEND2, MouseDragEnd2),
100: KEYC_MOUSE_STRING(MOUSEDRAGEND3, MouseDragEnd3),
1.26 nicm 101: KEYC_MOUSE_STRING(WHEELUP, WheelUp),
102: KEYC_MOUSE_STRING(WHEELDOWN, WheelDown),
1.55 nicm 103: KEYC_MOUSE_STRING(SECONDCLICK1, SecondClick1),
104: KEYC_MOUSE_STRING(SECONDCLICK2, SecondClick2),
105: KEYC_MOUSE_STRING(SECONDCLICK3, SecondClick3),
1.40 nicm 106: KEYC_MOUSE_STRING(DOUBLECLICK1, DoubleClick1),
107: KEYC_MOUSE_STRING(DOUBLECLICK2, DoubleClick2),
108: KEYC_MOUSE_STRING(DOUBLECLICK3, DoubleClick3),
109: KEYC_MOUSE_STRING(TRIPLECLICK1, TripleClick1),
110: KEYC_MOUSE_STRING(TRIPLECLICK2, TripleClick2),
111: KEYC_MOUSE_STRING(TRIPLECLICK3, TripleClick3),
1.1 nicm 112: };
113:
1.10 nicm 114: /* Find key string in table. */
1.33 nicm 115: static key_code
1.1 nicm 116: key_string_search_table(const char *string)
117: {
1.47 nicm 118: u_int i, user;
1.1 nicm 119:
120: for (i = 0; i < nitems(key_string_table); i++) {
121: if (strcasecmp(string, key_string_table[i].string) == 0)
122: return (key_string_table[i].key);
123: }
1.47 nicm 124:
125: if (sscanf(string, "User%u", &user) == 1 && user < KEYC_NUSER)
126: return (KEYC_USER + user);
127:
1.33 nicm 128: return (KEYC_UNKNOWN);
1.1 nicm 129: }
130:
1.14 nicm 131: /* Find modifiers. */
1.33 nicm 132: static key_code
1.14 nicm 133: key_string_get_modifiers(const char **string)
134: {
1.28 nicm 135: key_code modifiers;
1.14 nicm 136:
137: modifiers = 0;
138: while (((*string)[0] != '\0') && (*string)[1] == '-') {
139: switch ((*string)[0]) {
140: case 'C':
141: case 'c':
142: modifiers |= KEYC_CTRL;
143: break;
144: case 'M':
145: case 'm':
146: modifiers |= KEYC_ESCAPE;
147: break;
148: case 'S':
149: case 's':
150: modifiers |= KEYC_SHIFT;
151: break;
1.41 nicm 152: default:
153: *string = NULL;
1.42 nicm 154: return (0);
1.14 nicm 155: }
156: *string += 2;
157: }
158: return (modifiers);
159: }
160:
161: /* Lookup a string and convert to a key value. */
1.28 nicm 162: key_code
1.1 nicm 163: key_string_lookup_string(const char *string)
164: {
1.52 nicm 165: static const char *other = "!#()+,-.0123456789:;<=>'\r\t";
1.28 nicm 166: key_code key;
1.38 nicm 167: u_int u;
1.28 nicm 168: key_code modifiers;
1.29 nicm 169: struct utf8_data ud;
1.28 nicm 170: u_int i;
1.32 nicm 171: enum utf8_state more;
1.35 nicm 172: wchar_t wc;
1.23 nicm 173:
1.48 nicm 174: /* Is this no key or any key? */
1.33 nicm 175: if (strcasecmp(string, "None") == 0)
176: return (KEYC_NONE);
1.48 nicm 177: if (strcasecmp(string, "Any") == 0)
178: return (KEYC_ANY);
1.33 nicm 179:
1.23 nicm 180: /* Is this a hexadecimal value? */
181: if (string[0] == '0' && string[1] == 'x') {
1.38 nicm 182: if (sscanf(string + 2, "%x", &u) != 1)
183: return (KEYC_UNKNOWN);
184: if (u > 0x1fffff)
1.33 nicm 185: return (KEYC_UNKNOWN);
1.23 nicm 186: return (u);
187: }
1.1 nicm 188:
1.14 nicm 189: /* Check for modifiers. */
190: modifiers = 0;
191: if (string[0] == '^' && string[1] != '\0') {
192: modifiers |= KEYC_CTRL;
193: string++;
194: }
195: modifiers |= key_string_get_modifiers(&string);
1.41 nicm 196: if (string == NULL || string[0] == '\0')
1.33 nicm 197: return (KEYC_UNKNOWN);
1.1 nicm 198:
1.14 nicm 199: /* Is this a standard ASCII key? */
1.28 nicm 200: if (string[1] == '\0' && (u_char)string[0] <= 127) {
201: key = (u_char)string[0];
1.52 nicm 202: if (key < 32)
1.33 nicm 203: return (KEYC_UNKNOWN);
1.17 nicm 204: } else {
1.28 nicm 205: /* Try as a UTF-8 key. */
1.32 nicm 206: if ((more = utf8_open(&ud, (u_char)*string)) == UTF8_MORE) {
1.29 nicm 207: if (strlen(string) != ud.size)
1.33 nicm 208: return (KEYC_UNKNOWN);
1.29 nicm 209: for (i = 1; i < ud.size; i++)
1.30 nicm 210: more = utf8_append(&ud, (u_char)string[i]);
1.32 nicm 211: if (more != UTF8_DONE)
1.33 nicm 212: return (KEYC_UNKNOWN);
1.35 nicm 213: if (utf8_combine(&ud, &wc) != UTF8_DONE)
214: return (KEYC_UNKNOWN);
215: return (wc | modifiers);
1.28 nicm 216: }
217:
1.17 nicm 218: /* Otherwise look the key up in the table. */
219: key = key_string_search_table(string);
1.33 nicm 220: if (key == KEYC_UNKNOWN)
221: return (KEYC_UNKNOWN);
1.17 nicm 222: }
1.12 nicm 223:
1.17 nicm 224: /* Convert the standard control keys. */
1.24 nicm 225: if (key < KEYC_BASE && (modifiers & KEYC_CTRL) && !strchr(other, key)) {
1.17 nicm 226: if (key >= 97 && key <= 122)
227: key -= 96;
228: else if (key >= 64 && key <= 95)
229: key -= 64;
230: else if (key == 32)
231: key = 0;
1.56 ! nicm 232: else if (key == 63)
1.52 nicm 233: key = 127;
1.17 nicm 234: else
1.33 nicm 235: return (KEYC_UNKNOWN);
1.17 nicm 236: modifiers &= ~KEYC_CTRL;
1.13 nicm 237: }
238:
1.14 nicm 239: return (key | modifiers);
1.1 nicm 240: }
241:
1.10 nicm 242: /* Convert a key code into string format, with prefix if necessary. */
1.1 nicm 243: const char *
1.28 nicm 244: key_string_lookup_key(key_code key)
1.1 nicm 245: {
1.53 nicm 246: static char out[32];
247: char tmp[8];
248: const char *s;
249: u_int i;
250: struct utf8_data ud;
251: size_t off;
1.14 nicm 252:
253: *out = '\0';
1.22 nicm 254:
1.53 nicm 255: /* Literal keys are themselves. */
256: if (key & KEYC_LITERAL) {
257: snprintf(out, sizeof out, "%c", (int)(key & 0xff));
258: return (out);
259: }
260:
1.54 nicm 261: /* Display C-@ as C-Space. */
262: if ((key & KEYC_MASK_KEY) == 0)
263: key = ' ' | KEYC_CTRL | (key & KEYC_MASK_MOD);
264:
1.53 nicm 265: /* Fill in the modifiers. */
266: if (key & KEYC_CTRL)
267: strlcat(out, "C-", sizeof out);
268: if (key & KEYC_ESCAPE)
269: strlcat(out, "M-", sizeof out);
270: if (key & KEYC_SHIFT)
271: strlcat(out, "S-", sizeof out);
272: key &= KEYC_MASK_KEY;
273:
1.22 nicm 274: /* Handle no key. */
275: if (key == KEYC_NONE)
1.33 nicm 276: return ("None");
277:
278: /* Handle special keys. */
1.53 nicm 279: if (key == KEYC_UNKNOWN) {
280: s = "Unknown";
281: goto append;
282: }
283: if (key == KEYC_ANY) {
284: s = "Any";
285: goto append;
286: }
287: if (key == KEYC_FOCUS_IN) {
288: s = "FocusIn";
289: goto append;
290: }
291: if (key == KEYC_FOCUS_OUT) {
292: s = "FocusOut";
293: goto append;
294: }
295: if (key == KEYC_PASTE_START) {
296: s = "PasteStart";
297: goto append;
298: }
299: if (key == KEYC_PASTE_END) {
300: s = "PasteEnd";
301: goto append;
302: }
303: if (key == KEYC_MOUSE) {
304: s = "Mouse";
305: goto append;
306: }
307: if (key == KEYC_DRAGGING) {
308: s = "Dragging";
309: goto append;
310: }
311: if (key == KEYC_MOUSEMOVE_PANE) {
312: s = "MouseMovePane";
313: goto append;
314: }
315: if (key == KEYC_MOUSEMOVE_STATUS) {
316: s = "MouseMoveStatus";
317: goto append;
318: }
319: if (key == KEYC_MOUSEMOVE_STATUS_LEFT) {
320: s = "MouseMoveStatusLeft";
321: goto append;
322: }
323: if (key == KEYC_MOUSEMOVE_STATUS_RIGHT) {
324: s = "MouseMoveStatusRight";
325: goto append;
326: }
327: if (key == KEYC_MOUSEMOVE_BORDER) {
328: s = "MouseMoveBorder";
329: goto append;
330: }
1.47 nicm 331: if (key >= KEYC_USER && key < KEYC_USER + KEYC_NUSER) {
1.53 nicm 332: snprintf(tmp, sizeof tmp, "User%u", (u_int)(key - KEYC_USER));
333: strlcat(out, tmp, sizeof out);
1.47 nicm 334: return (out);
335: }
1.18 nicm 336:
1.14 nicm 337: /* Try the key against the string table. */
1.6 nicm 338: for (i = 0; i < nitems(key_string_table); i++) {
339: if (key == key_string_table[i].key)
1.14 nicm 340: break;
341: }
342: if (i != nitems(key_string_table)) {
343: strlcat(out, key_string_table[i].string, sizeof out);
344: return (out);
1.6 nicm 345: }
346:
1.28 nicm 347: /* Is this a UTF-8 key? */
348: if (key > 127 && key < KEYC_BASE) {
1.32 nicm 349: if (utf8_split(key, &ud) == UTF8_DONE) {
1.37 nicm 350: off = strlen(out);
351: memcpy(out + off, ud.data, ud.size);
352: out[off + ud.size] = '\0';
1.28 nicm 353: return (out);
354: }
355: }
356:
1.14 nicm 357: /* Invalid keys are errors. */
1.52 nicm 358: if (key > 255) {
1.33 nicm 359: snprintf(out, sizeof out, "Invalid#%llx", key);
1.27 nicm 360: return (out);
361: }
1.1 nicm 362:
1.14 nicm 363: /* Check for standard or control key. */
1.28 nicm 364: if (key <= 32) {
1.1 nicm 365: if (key == 0 || key > 26)
1.28 nicm 366: xsnprintf(tmp, sizeof tmp, "C-%c", (int)(64 + key));
1.1 nicm 367: else
1.28 nicm 368: xsnprintf(tmp, sizeof tmp, "C-%c", (int)(96 + key));
1.14 nicm 369: } else if (key >= 32 && key <= 126) {
370: tmp[0] = key;
371: tmp[1] = '\0';
1.52 nicm 372: } else if (key == 127)
373: xsnprintf(tmp, sizeof tmp, "C-?");
374: else if (key >= 128)
1.28 nicm 375: xsnprintf(tmp, sizeof tmp, "\\%llo", key);
1.20 nicm 376:
1.14 nicm 377: strlcat(out, tmp, sizeof out);
1.53 nicm 378: return (out);
379:
380: append:
381: strlcat(out, s, sizeof out);
1.14 nicm 382: return (out);
1.1 nicm 383: }
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