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