Annotation of src/usr.bin/tmux/key-string.c, Revision 1.17
1.17 ! nicm 1: /* $OpenBSD: key-string.c,v 1.16 2010/05/03 09:38:03 mcbride 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:
28: 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];
150: if (key < 32 || key > 126)
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:
187: /* Fill in the modifiers. */
188: if (key & KEYC_CTRL)
189: strlcat(out, "C-", sizeof out);
190: if (key & KEYC_ESCAPE)
191: strlcat(out, "M-", sizeof out);
192: if (key & KEYC_SHIFT)
193: strlcat(out, "S-", sizeof out);
194: key &= ~(KEYC_CTRL|KEYC_ESCAPE|KEYC_SHIFT);
1.1 nicm 195:
1.14 nicm 196: /* Try the key against the string table. */
1.6 nicm 197: for (i = 0; i < nitems(key_string_table); i++) {
198: if (key == key_string_table[i].key)
1.14 nicm 199: break;
200: }
201: if (i != nitems(key_string_table)) {
202: strlcat(out, key_string_table[i].string, sizeof out);
203: return (out);
1.6 nicm 204: }
205:
1.14 nicm 206: /* Invalid keys are errors. */
207: if (key >= 127)
208: return (NULL);
1.1 nicm 209:
1.14 nicm 210: /* Check for standard or control key. */
1.1 nicm 211: if (key >= 0 && key <= 32) {
212: if (key == 0 || key > 26)
213: xsnprintf(tmp, sizeof tmp, "C-%c", 64 + key);
214: else
215: xsnprintf(tmp, sizeof tmp, "C-%c", 96 + key);
1.14 nicm 216: } else if (key >= 32 && key <= 126) {
217: tmp[0] = key;
218: tmp[1] = '\0';
1.1 nicm 219: }
1.14 nicm 220: strlcat(out, tmp, sizeof out);
221: return (out);
1.1 nicm 222: }
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