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 "qemu/osdep.h"
  26 #include "keymaps.h"
  27 #include "sysemu/sysemu.h"
  28
  29 static int get_keysym(const name2keysym_t *table,
  30                       const char *name)
  31 {
  32     const name2keysym_t *p;
  33     for(p = table; p->name != NULL; p++) {
  34         if (!strcmp(p->name, name)) {
  35             return p->keysym;
  36         }
  37     }
  38     if (name[0] == 'U' && strlen(name) == 5) { /* try unicode Uxxxx */
  39         char *end;
  40         int ret = (int)strtoul(name + 1, &end, 16);
  41         if (*end == '\0' && ret > 0) {
  42             return ret;
  43         }
  44     }
  45     return 0;
  46 }
  47
  48
  49 static void add_to_key_range(struct key_range **krp, int code) {
  50     struct key_range *kr;
  51     for (kr = *krp; kr; kr = kr->next) {
  52         if (code >= kr->start && code <= kr->end) {
  53             break;
  54         }
  55         if (code == kr->start - 1) {
  56             kr->start--;
  57             break;
  58         }
  59         if (code == kr->end + 1) {
  60             kr->end++;
  61             break;
  62         }
  63     }
  64     if (kr == NULL) {
  65         kr = g_malloc0(sizeof(*kr));
  66         kr->start = kr->end = code;
  67         kr->next = *krp;
  68         *krp = kr;
  69     }
  70 }
  71
  72 static void add_keysym(char *line, int keysym, int keycode, kbd_layout_t *k) {
  73     if (keysym < MAX_NORMAL_KEYCODE) {
  74         /* fprintf(stderr,"Setting keysym %s (%d) to %d\n",
  75                    line, keysym, keycode); */
  76         k->keysym2keycode[keysym] = keycode;
  77     } else {
  78         if (k->extra_count >= MAX_EXTRA_COUNT) {
  79             fprintf(stderr, "Warning: Could not assign keysym %s (0x%x)"
  80                     " because of memory constraints.\n", line, keysym);
  81         } else {
  82 #if 0
  83             fprintf(stderr, "Setting %d: %d,%d\n",
  84                     k->extra_count, keysym, keycode);
  85 #endif
  86             k->keysym2keycode_extra[k->extra_count].
  87             keysym = keysym;
  88             k->keysym2keycode_extra[k->extra_count].
  89             keycode = keycode;
  90             k->extra_count++;
  91         }
  92     }
  93 }
  94
  95 static kbd_layout_t *parse_keyboard_layout(const name2keysym_t *table,
  96                                            const char *language,
  97                                            kbd_layout_t *k)
  98 {
  99     FILE *f;
 100     char * filename;
 101     char line[1024];
 102     int len;
 103
 104     filename = qemu_find_file(QEMU_FILE_TYPE_KEYMAP, language);
 105     f = filename ? fopen(filename, "r") : NULL;
 106     g_free(filename);
 107     if (!f) {
 108         fprintf(stderr, "Could not read keymap file: '%s'\n", language);
 109         return NULL;
 110     }
 111
 112     if (!k) {
 113         k = g_new0(kbd_layout_t, 1);
 114     }
 115
 116     for(;;) {
 117         if (fgets(line, 1024, f) == NULL) {
 118             break;
 119         }
 120         len = strlen(line);
 121         if (len > 0 && line[len - 1] == '\n') {
 122             line[len - 1] = '\0';
 123         }
 124         if (line[0] == '#') {
 125             continue;
 126         }
 127         if (!strncmp(line, "map ", 4)) {
 128             continue;
 129         }
 130         if (!strncmp(line, "include ", 8)) {
 131             parse_keyboard_layout(table, line + 8, k);
 132         } else {
 133             char *end_of_keysym = line;
 134             while (*end_of_keysym != 0 && *end_of_keysym != ' ') {
 135                 end_of_keysym++;
 136             }
 137             if (*end_of_keysym) {
 138                 int keysym;
 139                 *end_of_keysym = 0;
 140                 keysym = get_keysym(table, line);
 141                 if (keysym == 0) {
 142                     /* fprintf(stderr, "Warning: unknown keysym %s\n", line);*/
 143                 } else {
 144                     const char *rest = end_of_keysym + 1;
 145                     int keycode = strtol(rest, NULL, 0);
 146
 147                     if (strstr(rest, "numlock")) {
 148                         add_to_key_range(&k->keypad_range, keycode);
 149                         add_to_key_range(&k->numlock_range, keysym);
 150                         /* fprintf(stderr, "keypad keysym %04x keycode %d\n",
 151                                    keysym, keycode); */
 152                     }
 153
 154                     if (strstr(rest, "shift")) {
 155                         keycode |= SCANCODE_SHIFT;
 156                     }
 157                     if (strstr(rest, "altgr")) {
 158                         keycode |= SCANCODE_ALTGR;
 159                     }
 160                     if (strstr(rest, "ctrl")) {
 161                         keycode |= SCANCODE_CTRL;
 162                     }
 163
 164                     add_keysym(line, keysym, keycode, k);
 165
 166                     if (strstr(rest, "addupper")) {
 167                         char *c;
 168                         for (c = line; *c; c++) {
 169                             *c = qemu_toupper(*c);
 170                         }
 171                         keysym = get_keysym(table, line);
 172                         if (keysym) {
 173                             add_keysym(line, keysym,
 174                                        keycode | SCANCODE_SHIFT, k);
 175                         }
 176                     }
 177                 }
 178             }
 179         }
 180     }
 181     fclose(f);
 182     return k;
 183 }
 184
 185
 186 void *init_keyboard_layout(const name2keysym_t *table, const char *language)
 187 {
 188     return parse_keyboard_layout(table, language, NULL);
 189 }
 190
 191
 192 int keysym2scancode(void *kbd_layout, int keysym)
 193 {
 194     kbd_layout_t *k = kbd_layout;
 195     if (keysym < MAX_NORMAL_KEYCODE) {
 196         if (k->keysym2keycode[keysym] == 0) {
 197             fprintf(stderr, "Warning: no scancode found for keysym %d\n",
 198                     keysym);
 199         }
 200         return k->keysym2keycode[keysym];
 201     } else {
 202         int i;
 203 #ifdef XK_ISO_Left_Tab
 204         if (keysym == XK_ISO_Left_Tab) {
 205             keysym = XK_Tab;
 206         }
 207 #endif
 208         for (i = 0; i < k->extra_count; i++) {
 209             if (k->keysym2keycode_extra[i].keysym == keysym) {
 210                 return k->keysym2keycode_extra[i].keycode;
 211             }
 212         }
 213     }
 214     return 0;
 215 }
 216
 217 int keycode_is_keypad(void *kbd_layout, int keycode)
 218 {
 219     kbd_layout_t *k = kbd_layout;
 220     struct key_range *kr;
 221
 222     for (kr = k->keypad_range; kr; kr = kr->next) {
 223         if (keycode >= kr->start && keycode <= kr->end) {
 224             return 1;
 225         }
 226     }
 227     return 0;
 228 }
 229
 230 int keysym_is_numlock(void *kbd_layout, int keysym)
 231 {
 232     kbd_layout_t *k = kbd_layout;
 233     struct key_range *kr;
 234
 235     for (kr = k->numlock_range; kr; kr = kr->next) {
 236         if (keysym >= kr->start && keysym <= kr->end) {
 237             return 1;
 238         }
 239     }
 240     return 0;
 241 }