block: replace unchecked strdup/malloc/calloc with glib
[qemu.git] / ui / keymaps.c
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
25 #include "keymaps.h"
26 #include "sysemu.h"
27
28 static int get_keysym(const name2keysym_t *table,
29 const char *name)
30 {
31 const name2keysym_t *p;
32 for(p = table; p->name != NULL; p++) {
33 if (!strcmp(p->name, name))
34 return p->keysym;
35 }
36 return 0;
37 }
38
39
40 static void add_to_key_range(struct key_range **krp, int code) {
41 struct key_range *kr;
42 for (kr = *krp; kr; kr = kr->next) {
43 if (code >= kr->start && code <= kr->end)
44 break;
45 if (code == kr->start - 1) {
46 kr->start--;
47 break;
48 }
49 if (code == kr->end + 1) {
50 kr->end++;
51 break;
52 }
53 }
54 if (kr == NULL) {
55 kr = g_malloc0(sizeof(*kr));
56 kr->start = kr->end = code;
57 kr->next = *krp;
58 *krp = kr;
59 }
60 }
61
62 static void add_keysym(char *line, int keysym, int keycode, kbd_layout_t *k) {
63 if (keysym < MAX_NORMAL_KEYCODE) {
64 //fprintf(stderr,"Setting keysym %s (%d) to %d\n",line,keysym,keycode);
65 k->keysym2keycode[keysym] = keycode;
66 } else {
67 if (k->extra_count >= MAX_EXTRA_COUNT) {
68 fprintf(stderr,
69 "Warning: Could not assign keysym %s (0x%x) because of memory constraints.\n",
70 line, keysym);
71 } else {
72 #if 0
73 fprintf(stderr, "Setting %d: %d,%d\n",
74 k->extra_count, keysym, keycode);
75 #endif
76 k->keysym2keycode_extra[k->extra_count].
77 keysym = keysym;
78 k->keysym2keycode_extra[k->extra_count].
79 keycode = keycode;
80 k->extra_count++;
81 }
82 }
83 }
84
85 static kbd_layout_t *parse_keyboard_layout(const name2keysym_t *table,
86 const char *language,
87 kbd_layout_t * k)
88 {
89 FILE *f;
90 char * filename;
91 char line[1024];
92 int len;
93
94 filename = qemu_find_file(QEMU_FILE_TYPE_KEYMAP, language);
95 f = filename ? fopen(filename, "r") : NULL;
96 g_free(filename);
97 if (!f) {
98 fprintf(stderr,
99 "Could not read keymap file: '%s'\n", language);
100 return NULL;
101 }
102
103 if (!k)
104 k = g_malloc0(sizeof(kbd_layout_t));
105
106 for(;;) {
107 if (fgets(line, 1024, f) == NULL)
108 break;
109 len = strlen(line);
110 if (len > 0 && line[len - 1] == '\n')
111 line[len - 1] = '\0';
112 if (line[0] == '#')
113 continue;
114 if (!strncmp(line, "map ", 4))
115 continue;
116 if (!strncmp(line, "include ", 8)) {
117 parse_keyboard_layout(table, line + 8, k);
118 } else {
119 char *end_of_keysym = line;
120 while (*end_of_keysym != 0 && *end_of_keysym != ' ')
121 end_of_keysym++;
122 if (*end_of_keysym) {
123 int keysym;
124 *end_of_keysym = 0;
125 keysym = get_keysym(table, line);
126 if (keysym == 0) {
127 // fprintf(stderr, "Warning: unknown keysym %s\n", line);
128 } else {
129 const char *rest = end_of_keysym + 1;
130 char *rest2;
131 int keycode = strtol(rest, &rest2, 0);
132
133 if (rest && strstr(rest, "numlock")) {
134 add_to_key_range(&k->keypad_range, keycode);
135 add_to_key_range(&k->numlock_range, keysym);
136 //fprintf(stderr, "keypad keysym %04x keycode %d\n", keysym, keycode);
137 }
138
139 if (rest && strstr(rest, "shift"))
140 keycode |= SCANCODE_SHIFT;
141 if (rest && strstr(rest, "altgr"))
142 keycode |= SCANCODE_ALTGR;
143 if (rest && strstr(rest, "ctrl"))
144 keycode |= SCANCODE_CTRL;
145
146 add_keysym(line, keysym, keycode, k);
147
148 if (rest && strstr(rest, "addupper")) {
149 char *c;
150 for (c = line; *c; c++)
151 *c = qemu_toupper(*c);
152 keysym = get_keysym(table, line);
153 if (keysym)
154 add_keysym(line, keysym, keycode | SCANCODE_SHIFT, k);
155 }
156 }
157 }
158 }
159 }
160 fclose(f);
161 return k;
162 }
163
164
165 void *init_keyboard_layout(const name2keysym_t *table, const char *language)
166 {
167 return parse_keyboard_layout(table, language, NULL);
168 }
169
170
171 int keysym2scancode(void *kbd_layout, int keysym)
172 {
173 kbd_layout_t *k = kbd_layout;
174 if (keysym < MAX_NORMAL_KEYCODE) {
175 if (k->keysym2keycode[keysym] == 0)
176 fprintf(stderr, "Warning: no scancode found for keysym %d\n",
177 keysym);
178 return k->keysym2keycode[keysym];
179 } else {
180 int i;
181 #ifdef XK_ISO_Left_Tab
182 if (keysym == XK_ISO_Left_Tab)
183 keysym = XK_Tab;
184 #endif
185 for (i = 0; i < k->extra_count; i++)
186 if (k->keysym2keycode_extra[i].keysym == keysym)
187 return k->keysym2keycode_extra[i].keycode;
188 }
189 return 0;
190 }
191
192 int keycode_is_keypad(void *kbd_layout, int keycode)
193 {
194 kbd_layout_t *k = kbd_layout;
195 struct key_range *kr;
196
197 for (kr = k->keypad_range; kr; kr = kr->next)
198 if (keycode >= kr->start && keycode <= kr->end)
199 return 1;
200 return 0;
201 }
202
203 int keysym_is_numlock(void *kbd_layout, int keysym)
204 {
205 kbd_layout_t *k = kbd_layout;
206 struct key_range *kr;
207
208 for (kr = k->numlock_range; kr; kr = kr->next)
209 if (keysym >= kr->start && keysym <= kr->end)
210 return 1;
211 return 0;
212 }