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 */
24
get_keysym(const char * name)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 }
34
35 struct key_range {
36 int start;
37 int end;
38 struct key_range *next;
39 };
40
41 #define MAX_NORMAL_KEYCODE 512
42 #define MAX_EXTRA_COUNT 256
43 typedef struct {
44 uint16_t keysym2keycode[MAX_NORMAL_KEYCODE];
45 struct {
46 int keysym;
47 uint16_t keycode;
48 } keysym2keycode_extra[MAX_EXTRA_COUNT];
49 int extra_count;
50 struct key_range *keypad_range;
51 struct key_range *numlock_range;
52 } kbd_layout_t;
53
add_to_key_range(struct key_range ** krp,int code)54 static void add_to_key_range(struct key_range **krp, int code) {
55 struct key_range *kr;
56 for (kr = *krp; kr; kr = kr->next) {
57 if (code >= kr->start && code <= kr->end)
58 break;
59 if (code == kr->start - 1) {
60 kr->start--;
61 break;
62 }
63 if (code == kr->end + 1) {
64 kr->end++;
65 break;
66 }
67 }
68 if (kr == NULL) {
69 kr = qemu_mallocz(sizeof(*kr));
70 if (kr) {
71 kr->start = kr->end = code;
72 kr->next = *krp;
73 *krp = kr;
74 }
75 }
76 }
77
parse_keyboard_layout(const char * language,kbd_layout_t * k)78 static kbd_layout_t *parse_keyboard_layout(const char *language,
79 kbd_layout_t * k)
80 {
81 FILE *f;
82 char file_name[1024];
83 char line[1024];
84 int len;
85
86 snprintf(file_name, sizeof(file_name),
87 "%s/keymaps/%s", bios_dir, language);
88
89 if (!k)
90 k = qemu_mallocz(sizeof(kbd_layout_t));
91 if (!k)
92 return 0;
93 if (!(f = fopen(file_name, "r"))) {
94 fprintf(stderr,
95 "Could not read keymap file: '%s'\n", file_name);
96 return 0;
97 }
98 for(;;) {
99 if (fgets(line, 1024, f) == NULL)
100 break;
101 len = strlen(line);
102 if (len > 0 && line[len - 1] == '\n')
103 line[len - 1] = '\0';
104 if (line[0] == '#')
105 continue;
106 if (!strncmp(line, "map ", 4))
107 continue;
108 if (!strncmp(line, "include ", 8)) {
109 parse_keyboard_layout(line + 8, k);
110 } else {
111 char *end_of_keysym = line;
112 while (*end_of_keysym != 0 && *end_of_keysym != ' ')
113 end_of_keysym++;
114 if (*end_of_keysym) {
115 int keysym;
116 *end_of_keysym = 0;
117 keysym = get_keysym(line);
118 if (keysym == 0) {
119 // fprintf(stderr, "Warning: unknown keysym %s\n", line);
120 } else {
121 const char *rest = end_of_keysym + 1;
122 char *rest2;
123 int keycode = strtol(rest, &rest2, 0);
124
125 if (rest && strstr(rest, "numlock")) {
126 add_to_key_range(&k->keypad_range, keycode);
127 add_to_key_range(&k->numlock_range, keysym);
128 //fprintf(stderr, "keypad keysym %04x keycode %d\n", keysym, keycode);
129 }
130
131 /* if(keycode&0x80)
132 keycode=(keycode<<8)^0x80e0; */
133 if (keysym < MAX_NORMAL_KEYCODE) {
134 //fprintf(stderr,"Setting keysym %s (%d) to %d\n",line,keysym,keycode);
135 k->keysym2keycode[keysym] = keycode;
136 } else {
137 if (k->extra_count >= MAX_EXTRA_COUNT) {
138 fprintf(stderr,
139 "Warning: Could not assign keysym %s (0x%x) because of memory constraints.\n",
140 line, keysym);
141 } else {
142 #if 0
143 fprintf(stderr, "Setting %d: %d,%d\n",
144 k->extra_count, keysym, keycode);
145 #endif
146 k->keysym2keycode_extra[k->extra_count].
147 keysym = keysym;
148 k->keysym2keycode_extra[k->extra_count].
149 keycode = keycode;
150 k->extra_count++;
151 }
152 }
153 }
154 }
155 }
156 }
157 fclose(f);
158 return k;
159 }
160
init_keyboard_layout(const char * language)161 static void *init_keyboard_layout(const char *language)
162 {
163 return parse_keyboard_layout(language, 0);
164 }
165
keysym2scancode(void * kbd_layout,int keysym)166 static int keysym2scancode(void *kbd_layout, int keysym)
167 {
168 kbd_layout_t *k = kbd_layout;
169 if (keysym < MAX_NORMAL_KEYCODE) {
170 if (k->keysym2keycode[keysym] == 0)
171 fprintf(stderr, "Warning: no scancode found for keysym %d\n",
172 keysym);
173 return k->keysym2keycode[keysym];
174 } else {
175 int i;
176 #ifdef XK_ISO_Left_Tab
177 if (keysym == XK_ISO_Left_Tab)
178 keysym = XK_Tab;
179 #endif
180 for (i = 0; i < k->extra_count; i++)
181 if (k->keysym2keycode_extra[i].keysym == keysym)
182 return k->keysym2keycode_extra[i].keycode;
183 }
184 return 0;
185 }
186
keycode_is_keypad(void * kbd_layout,int keycode)187 static inline int keycode_is_keypad(void *kbd_layout, int keycode)
188 {
189 kbd_layout_t *k = kbd_layout;
190 struct key_range *kr;
191
192 for (kr = k->keypad_range; kr; kr = kr->next)
193 if (keycode >= kr->start && keycode <= kr->end)
194 return 1;
195 return 0;
196 }
197
keysym_is_numlock(void * kbd_layout,int keysym)198 static inline int keysym_is_numlock(void *kbd_layout, int keysym)
199 {
200 kbd_layout_t *k = kbd_layout;
201 struct key_range *kr;
202
203 for (kr = k->numlock_range; kr; kr = kr->next)
204 if (keysym >= kr->start && keysym <= kr->end)
205 return 1;
206 return 0;
207 }
208