Annotation of src/usr.bin/tmux/key-string.c, Revision 1.20
1.20 ! nicm 1: /* $OpenBSD: key-string.c,v 1.19 2011/01/01 03:43:20 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 },
58: { "PPage", KEYC_PPAGE },
59: { "Tab", '\011' },
60: { "BTab", KEYC_BTAB },
1.7 nicm 61: { "Space", ' ' },
1.5 nicm 62: { "BSpace", KEYC_BSPACE },
1.6 nicm 63: { "Enter", '\r' },
64: { "Escape", '\033' },
1.1 nicm 65:
66: /* Arrow keys. */
67: { "Up", KEYC_UP },
68: { "Down", KEYC_DOWN },
69: { "Left", KEYC_LEFT },
70: { "Right", KEYC_RIGHT },
71:
72: /* Numeric keypad. */
1.9 nicm 73: { "KP/", KEYC_KP_SLASH },
74: { "KP*", KEYC_KP_STAR },
75: { "KP-", KEYC_KP_MINUS },
76: { "KP7", KEYC_KP_SEVEN },
77: { "KP8", KEYC_KP_EIGHT },
78: { "KP9", KEYC_KP_NINE },
79: { "KP+", KEYC_KP_PLUS },
80: { "KP4", KEYC_KP_FOUR },
81: { "KP5", KEYC_KP_FIVE },
82: { "KP6", KEYC_KP_SIX },
83: { "KP1", KEYC_KP_ONE },
84: { "KP2", KEYC_KP_TWO },
85: { "KP3", KEYC_KP_THREE },
86: { "KPEnter", KEYC_KP_ENTER },
87: { "KP0", KEYC_KP_ZERO },
88: { "KP.", KEYC_KP_PERIOD },
1.1 nicm 89: };
90:
1.10 nicm 91: /* Find key string in table. */
1.1 nicm 92: int
93: key_string_search_table(const char *string)
94: {
95: u_int i;
96:
97: for (i = 0; i < nitems(key_string_table); i++) {
98: if (strcasecmp(string, key_string_table[i].string) == 0)
99: return (key_string_table[i].key);
100: }
101: return (KEYC_NONE);
102: }
103:
1.14 nicm 104: /* Find modifiers. */
105: int
106: key_string_get_modifiers(const char **string)
107: {
108: int modifiers;
109:
110: modifiers = 0;
111: while (((*string)[0] != '\0') && (*string)[1] == '-') {
112: switch ((*string)[0]) {
113: case 'C':
114: case 'c':
115: modifiers |= KEYC_CTRL;
116: break;
117: case 'M':
118: case 'm':
119: modifiers |= KEYC_ESCAPE;
120: break;
121: case 'S':
122: case 's':
123: modifiers |= KEYC_SHIFT;
124: break;
125: }
126: *string += 2;
127: }
128: return (modifiers);
129: }
130:
131: /* Lookup a string and convert to a key value. */
1.1 nicm 132: int
133: key_string_lookup_string(const char *string)
134: {
1.14 nicm 135: int key, modifiers;
1.1 nicm 136:
1.14 nicm 137: /* Check for modifiers. */
138: modifiers = 0;
139: if (string[0] == '^' && string[1] != '\0') {
140: modifiers |= KEYC_CTRL;
141: string++;
142: }
143: modifiers |= key_string_get_modifiers(&string);
1.1 nicm 144: if (string[0] == '\0')
145: return (KEYC_NONE);
146:
1.14 nicm 147: /* Is this a standard ASCII key? */
148: if (string[1] == '\0') {
149: key = (u_char) string[0];
1.20 ! nicm 150: if (key < 32 || key == 127 || key > 255)
1.1 nicm 151: return (KEYC_NONE);
1.17 nicm 152: } else {
153: /* Otherwise look the key up in the table. */
154: key = key_string_search_table(string);
155: if (key == KEYC_NONE)
156: return (KEYC_NONE);
157: }
1.12 nicm 158:
1.17 nicm 159: /* Convert the standard control keys. */
160: if (key < KEYC_BASE && (modifiers & KEYC_CTRL)) {
161: if (key >= 97 && key <= 122)
162: key -= 96;
163: else if (key >= 64 && key <= 95)
164: key -= 64;
165: else if (key == 32)
166: key = 0;
167: else if (key == 63)
168: key = KEYC_BSPACE;
169: else
170: return (KEYC_NONE);
171: modifiers &= ~KEYC_CTRL;
1.13 nicm 172: }
173:
1.14 nicm 174: return (key | modifiers);
1.1 nicm 175: }
176:
1.10 nicm 177: /* Convert a key code into string format, with prefix if necessary. */
1.1 nicm 178: const char *
179: key_string_lookup_key(int key)
180: {
1.14 nicm 181: static char out[24];
182: char tmp[8];
183: u_int i;
184:
185: *out = '\0';
186:
1.18 nicm 187: /*
188: * Special case: display C-@ as C-Space. Could do this below in
189: * the (key >= 0 && key <= 32), but this way we let it be found
190: * in key_string_table, for the unlikely chance that we might
191: * change its name.
192: */
193: if ((key & KEYC_MASK_KEY) == 0)
194: key = ' ' | KEYC_CTRL | (key & KEYC_MASK_MOD);
195:
1.14 nicm 196: /* Fill in the modifiers. */
197: if (key & KEYC_CTRL)
198: strlcat(out, "C-", sizeof out);
199: if (key & KEYC_ESCAPE)
200: strlcat(out, "M-", sizeof out);
201: if (key & KEYC_SHIFT)
202: strlcat(out, "S-", sizeof out);
1.18 nicm 203: key &= KEYC_MASK_KEY;
1.1 nicm 204:
1.14 nicm 205: /* Try the key against the string table. */
1.6 nicm 206: for (i = 0; i < nitems(key_string_table); i++) {
207: if (key == key_string_table[i].key)
1.14 nicm 208: break;
209: }
210: if (i != nitems(key_string_table)) {
211: strlcat(out, key_string_table[i].string, sizeof out);
212: return (out);
1.6 nicm 213: }
214:
1.14 nicm 215: /* Invalid keys are errors. */
1.20 ! nicm 216: if (key == 127 || key > 255)
1.14 nicm 217: return (NULL);
1.1 nicm 218:
1.14 nicm 219: /* Check for standard or control key. */
1.1 nicm 220: if (key >= 0 && key <= 32) {
221: if (key == 0 || key > 26)
222: xsnprintf(tmp, sizeof tmp, "C-%c", 64 + key);
223: else
224: xsnprintf(tmp, sizeof tmp, "C-%c", 96 + key);
1.14 nicm 225: } else if (key >= 32 && key <= 126) {
226: tmp[0] = key;
227: tmp[1] = '\0';
1.20 ! nicm 228: } else if (key >= 128)
! 229: xsnprintf(tmp, sizeof tmp, "\\%o", key);
! 230:
1.14 nicm 231: strlcat(out, tmp, sizeof out);
232: return (out);
1.1 nicm 233: }
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