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