Annotation of src/usr.bin/tmux/key-string.c, Revision 1.23
1.23 ! nicm 1: /* $OpenBSD: key-string.c,v 1.22 2012/01/21 08:40:09 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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: int key_string_search_table(const char *);
1.14 nicm 26: int key_string_get_modifiers(const char **);
1.1 nicm 27:
1.19 nicm 28: const struct {
1.14 nicm 29: const char *string;
30: int 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: { "F13", KEYC_F13 },
46: { "F14", KEYC_F14 },
47: { "F15", KEYC_F15 },
48: { "F16", KEYC_F16 },
49: { "F17", KEYC_F17 },
50: { "F18", KEYC_F18 },
51: { "F19", KEYC_F19 },
52: { "F20", KEYC_F20 },
53: { "IC", KEYC_IC },
54: { "DC", KEYC_DC },
55: { "Home", KEYC_HOME },
56: { "End", KEYC_END },
57: { "NPage", KEYC_NPAGE },
1.21 nicm 58: { "PageDown", KEYC_NPAGE },
59: { "PgDn", KEYC_NPAGE },
1.1 nicm 60: { "PPage", KEYC_PPAGE },
1.21 nicm 61: { "PageUp", KEYC_PPAGE },
62: { "PgUp", KEYC_PPAGE },
1.1 nicm 63: { "Tab", '\011' },
64: { "BTab", KEYC_BTAB },
1.7 nicm 65: { "Space", ' ' },
1.5 nicm 66: { "BSpace", KEYC_BSPACE },
1.6 nicm 67: { "Enter", '\r' },
68: { "Escape", '\033' },
1.1 nicm 69:
70: /* Arrow keys. */
71: { "Up", KEYC_UP },
72: { "Down", KEYC_DOWN },
73: { "Left", KEYC_LEFT },
74: { "Right", KEYC_RIGHT },
75:
76: /* Numeric keypad. */
1.9 nicm 77: { "KP/", KEYC_KP_SLASH },
78: { "KP*", KEYC_KP_STAR },
79: { "KP-", KEYC_KP_MINUS },
80: { "KP7", KEYC_KP_SEVEN },
81: { "KP8", KEYC_KP_EIGHT },
82: { "KP9", KEYC_KP_NINE },
83: { "KP+", KEYC_KP_PLUS },
84: { "KP4", KEYC_KP_FOUR },
85: { "KP5", KEYC_KP_FIVE },
86: { "KP6", KEYC_KP_SIX },
87: { "KP1", KEYC_KP_ONE },
88: { "KP2", KEYC_KP_TWO },
89: { "KP3", KEYC_KP_THREE },
90: { "KPEnter", KEYC_KP_ENTER },
91: { "KP0", KEYC_KP_ZERO },
92: { "KP.", KEYC_KP_PERIOD },
1.1 nicm 93: };
94:
1.10 nicm 95: /* Find key string in table. */
1.1 nicm 96: int
97: key_string_search_table(const char *string)
98: {
99: u_int i;
100:
101: for (i = 0; i < nitems(key_string_table); i++) {
102: if (strcasecmp(string, key_string_table[i].string) == 0)
103: return (key_string_table[i].key);
104: }
105: return (KEYC_NONE);
106: }
107:
1.14 nicm 108: /* Find modifiers. */
109: int
110: key_string_get_modifiers(const char **string)
111: {
112: int modifiers;
113:
114: modifiers = 0;
115: while (((*string)[0] != '\0') && (*string)[1] == '-') {
116: switch ((*string)[0]) {
117: case 'C':
118: case 'c':
119: modifiers |= KEYC_CTRL;
120: break;
121: case 'M':
122: case 'm':
123: modifiers |= KEYC_ESCAPE;
124: break;
125: case 'S':
126: case 's':
127: modifiers |= KEYC_SHIFT;
128: break;
129: }
130: *string += 2;
131: }
132: return (modifiers);
133: }
134:
135: /* Lookup a string and convert to a key value. */
1.1 nicm 136: int
137: key_string_lookup_string(const char *string)
138: {
1.14 nicm 139: int key, modifiers;
1.23 ! nicm 140: u_short u;
! 141: int size;
! 142:
! 143: /* Is this a hexadecimal value? */
! 144: if (string[0] == '0' && string[1] == 'x') {
! 145: if (sscanf(string + 2, "%hx%n", &u, &size) != 1 || size > 4)
! 146: return (KEYC_NONE);
! 147: return (u);
! 148: }
1.1 nicm 149:
1.14 nicm 150: /* Check for modifiers. */
151: modifiers = 0;
152: if (string[0] == '^' && string[1] != '\0') {
153: modifiers |= KEYC_CTRL;
154: string++;
155: }
156: modifiers |= key_string_get_modifiers(&string);
1.1 nicm 157: if (string[0] == '\0')
158: return (KEYC_NONE);
159:
1.14 nicm 160: /* Is this a standard ASCII key? */
161: if (string[1] == '\0') {
162: key = (u_char) string[0];
1.20 nicm 163: if (key < 32 || key == 127 || key > 255)
1.1 nicm 164: return (KEYC_NONE);
1.17 nicm 165: } else {
166: /* Otherwise look the key up in the table. */
167: key = key_string_search_table(string);
168: if (key == KEYC_NONE)
169: return (KEYC_NONE);
170: }
1.12 nicm 171:
1.17 nicm 172: /* Convert the standard control keys. */
173: if (key < KEYC_BASE && (modifiers & KEYC_CTRL)) {
174: if (key >= 97 && key <= 122)
175: key -= 96;
176: else if (key >= 64 && key <= 95)
177: key -= 64;
178: else if (key == 32)
179: key = 0;
180: else if (key == 63)
181: key = KEYC_BSPACE;
182: else
183: return (KEYC_NONE);
184: modifiers &= ~KEYC_CTRL;
1.13 nicm 185: }
186:
1.14 nicm 187: return (key | modifiers);
1.1 nicm 188: }
189:
1.10 nicm 190: /* Convert a key code into string format, with prefix if necessary. */
1.1 nicm 191: const char *
192: key_string_lookup_key(int key)
193: {
1.14 nicm 194: static char out[24];
195: char tmp[8];
196: u_int i;
197:
198: *out = '\0';
1.22 nicm 199:
200: /* Handle no key. */
201: if (key == KEYC_NONE)
202: return ("none");
1.14 nicm 203:
1.18 nicm 204: /*
205: * Special case: display C-@ as C-Space. Could do this below in
206: * the (key >= 0 && key <= 32), but this way we let it be found
207: * in key_string_table, for the unlikely chance that we might
208: * change its name.
209: */
210: if ((key & KEYC_MASK_KEY) == 0)
211: key = ' ' | KEYC_CTRL | (key & KEYC_MASK_MOD);
212:
1.14 nicm 213: /* Fill in the modifiers. */
214: if (key & KEYC_CTRL)
215: strlcat(out, "C-", sizeof out);
216: if (key & KEYC_ESCAPE)
217: strlcat(out, "M-", sizeof out);
218: if (key & KEYC_SHIFT)
219: strlcat(out, "S-", sizeof out);
1.18 nicm 220: key &= KEYC_MASK_KEY;
1.1 nicm 221:
1.14 nicm 222: /* Try the key against the string table. */
1.6 nicm 223: for (i = 0; i < nitems(key_string_table); i++) {
224: if (key == key_string_table[i].key)
1.14 nicm 225: break;
226: }
227: if (i != nitems(key_string_table)) {
228: strlcat(out, key_string_table[i].string, sizeof out);
229: return (out);
1.6 nicm 230: }
231:
1.14 nicm 232: /* Invalid keys are errors. */
1.20 nicm 233: if (key == 127 || key > 255)
1.14 nicm 234: return (NULL);
1.1 nicm 235:
1.14 nicm 236: /* Check for standard or control key. */
1.1 nicm 237: if (key >= 0 && key <= 32) {
238: if (key == 0 || key > 26)
239: xsnprintf(tmp, sizeof tmp, "C-%c", 64 + key);
240: else
241: xsnprintf(tmp, sizeof tmp, "C-%c", 96 + key);
1.14 nicm 242: } else if (key >= 32 && key <= 126) {
243: tmp[0] = key;
244: tmp[1] = '\0';
1.20 nicm 245: } else if (key >= 128)
246: xsnprintf(tmp, sizeof tmp, "\\%o", key);
247:
1.14 nicm 248: strlcat(out, tmp, sizeof out);
249: return (out);
1.1 nicm 250: }
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