direct-io.hg

view tools/ioemu/keymaps.c @ 12730:897bb9b7ed06

Tidy.

Signed-off-by: Ewan Mellor <ewan@xensource.com>
author Ewan Mellor <ewan@xensource.com>
date Mon Dec 04 18:05:32 2006 +0000 (2006-12-04)
parents c7f4a89eb054
children 00618037d37d
line source
1 /*
2 * QEMU keysym to keycode conversion using rdesktop keymaps
3 *
4 * Copyright (c) 2004 Johannes Schindelin
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
25 static int get_keysym(const char *name)
26 {
27 name2keysym_t *p;
28 for(p = name2keysym; p->name != NULL; p++) {
29 if (!strcmp(p->name, name))
30 return p->keysym;
31 }
32 return 0;
33 }
35 #define MAX_NORMAL_KEYCODE 512
36 #define MAX_EXTRA_COUNT 256
37 typedef struct {
38 uint16_t keysym2keycode[MAX_NORMAL_KEYCODE];
39 int keysym2numlock[MAX_NORMAL_KEYCODE];
40 struct {
41 int keysym;
42 int numlock;
43 uint16_t keycode;
44 } keysym2keycode_extra[MAX_EXTRA_COUNT];
45 int extra_count;
46 } kbd_layout_t;
48 static kbd_layout_t *parse_keyboard_layout(const char *language,
49 kbd_layout_t * k)
50 {
51 FILE *f;
52 char file_name[1024];
53 char line[1024];
54 int len;
55 int *keycode2numlock;
56 int i;
58 snprintf(file_name, sizeof(file_name),
59 "%s/keymaps/%s", bios_dir, language);
61 if (!k)
62 k = qemu_mallocz(sizeof(kbd_layout_t));
63 if (!k)
64 return 0;
65 if (!(f = fopen(file_name, "r"))) {
66 fprintf(stderr,
67 "Could not read keymap file: '%s'\n", file_name);
68 return 0;
69 }
71 /* Allocate a temporary map tracking which keycodes change when numlock is
72 set. Keycodes are 16 bit, so 65536 is safe. */
73 keycode2numlock = malloc(65536 * sizeof(int));
74 if (!keycode2numlock) {
75 perror("Could not read keymap file");
76 return 0;
77 }
79 for(;;) {
80 if (fgets(line, 1024, f) == NULL)
81 break;
82 len = strlen(line);
83 if (len > 0 && line[len - 1] == '\n')
84 line[len - 1] = '\0';
85 if (line[0] == '#')
86 continue;
87 if (!strncmp(line, "map ", 4))
88 continue;
89 if (!strncmp(line, "include ", 8)) {
90 parse_keyboard_layout(line + 8, k);
91 } else {
92 char *end_of_keysym = line;
93 while (*end_of_keysym != 0 && *end_of_keysym != ' ')
94 end_of_keysym++;
95 if (*end_of_keysym) {
96 int keysym;
97 *end_of_keysym = 0;
98 keysym = get_keysym(line);
99 if (keysym == 0) {
100 // fprintf(stderr, "Warning: unknown keysym %s\n", line);
101 } else {
102 char *rest = end_of_keysym + 1;
103 int keycode = strtol(rest, &rest, 0);
104 int numlock = (rest != NULL &&
105 strstr(rest, "numlock") != NULL);
107 keycode2numlock[keycode] = numlock;
109 /* if(keycode&0x80)
110 keycode=(keycode<<8)^0x80e0; */
111 if (keysym < MAX_NORMAL_KEYCODE) {
112 //fprintf(stderr,"Setting keysym %s (%d) to %d\n",line,keysym,keycode);
113 k->keysym2keycode[keysym] = keycode;
114 k->keysym2numlock[keysym] = numlock;
115 } else {
116 if (k->extra_count >= MAX_EXTRA_COUNT) {
117 fprintf(stderr,
118 "Warning: Could not assign keysym %s (0x%x) because of memory constraints.\n",
119 line, keysym);
120 } else {
121 #if 0
122 fprintf(stderr, "Setting %d: %d,%d\n",
123 k->extra_count, keysym, keycode);
124 #endif
125 k->keysym2keycode_extra[k->extra_count].
126 keysym = keysym;
127 k->keysym2keycode_extra[k->extra_count].
128 keycode = keycode;
129 k->keysym2keycode_extra[k->extra_count].
130 numlock = numlock;
131 k->extra_count++;
132 }
133 }
134 }
135 }
136 }
137 }
138 fclose(f);
140 for (i = 0; i < MAX_NORMAL_KEYCODE; i++) {
141 if (k->keysym2numlock[i] != 1) {
142 k->keysym2numlock[i] = -keycode2numlock[k->keysym2keycode[i]];
143 }
144 }
146 for (i = 0; i < k->extra_count; i++) {
147 if (k->keysym2keycode_extra[i].numlock != 1) {
148 k->keysym2keycode_extra[i].numlock =
149 -keycode2numlock[k->keysym2keycode_extra[i].keycode];
150 }
151 }
153 free(keycode2numlock);
155 return k;
156 }
158 static void *init_keyboard_layout(const char *language)
159 {
160 return parse_keyboard_layout(language, 0);
161 }
163 static int keysym2scancode(void *kbd_layout, int keysym)
164 {
165 kbd_layout_t *k = kbd_layout;
166 if (keysym < MAX_NORMAL_KEYCODE) {
167 if (k->keysym2keycode[keysym] == 0)
168 fprintf(stderr, "Warning: no scancode found for keysym %d\n",
169 keysym);
170 return k->keysym2keycode[keysym];
171 } else {
172 int i;
173 #ifdef XK_ISO_Left_Tab
174 if (keysym == XK_ISO_Left_Tab)
175 keysym = XK_Tab;
176 #endif
177 for (i = 0; i < k->extra_count; i++)
178 if (k->keysym2keycode_extra[i].keysym == keysym)
179 return k->keysym2keycode_extra[i].keycode;
180 }
181 return 0;
182 }
184 /**
185 * Returns 1 if the given keysym requires numlock to be pressed, -1 if it
186 * requires it to be cleared, and 0 otherwise.
187 */
188 static int keysym2numlock(void *kbd_layout, int keysym)
189 {
190 kbd_layout_t *k = kbd_layout;
191 if (keysym < MAX_NORMAL_KEYCODE) {
192 return k->keysym2numlock[keysym];
193 } else {
194 int i;
195 #ifdef XK_ISO_Left_Tab
196 if (keysym == XK_ISO_Left_Tab)
197 keysym = XK_Tab;
198 #endif
199 for (i = 0; i < k->extra_count; i++)
200 if (k->keysym2keycode_extra[i].keysym == keysym)
201 return k->keysym2keycode_extra[i].numlock;
202 }
203 return 0;
204 }