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 = qemu_mallocz(sizeof(*kr));
  56         kr->start = kr->end = code;
  57         kr->next = *krp;
  58         *krp = kr;
  59     }
  60 }
  61
  62 static kbd_layout_t *parse_keyboard_layout(const name2keysym_t *table,
  63                                            const char *language,
  64                                            kbd_layout_t * k)
  65 {
  66     FILE *f;
  67     char * filename;
  68     char line[1024];
  69     int len;
  70
  71     filename = qemu_find_file(QEMU_FILE_TYPE_KEYMAP, language);
  72
  73     if (!k)
  74         k = qemu_mallocz(sizeof(kbd_layout_t));
  75     if (!(filename && (f = fopen(filename, "r")))) {
  76         fprintf(stderr,
  77                 "Could not read keymap file: '%s'\n", language);
  78         return NULL;
  79     }
  80     qemu_free(filename);
  81     for(;;) {
  82         if (fgets(line, 1024, f) == NULL)
  83             break;
  84         len = strlen(line);
  85         if (len > 0 && line[len - 1] == '\n')
  86             line[len - 1] = '\0';
  87         if (line[0] == '#')
  88             continue;
  89         if (!strncmp(line, "map ", 4))
  90             continue;
  91         if (!strncmp(line, "include ", 8)) {
  92             parse_keyboard_layout(table, line + 8, k);
  93         } else {
  94             char *end_of_keysym = line;
  95             while (*end_of_keysym != 0 && *end_of_keysym != ' ')
  96                 end_of_keysym++;
  97             if (*end_of_keysym) {
  98                 int keysym;
  99                 *end_of_keysym = 0;
 100                 keysym = get_keysym(table, line);
 101                 if (keysym == 0) {
 102                     //              fprintf(stderr, "Warning: unknown keysym %s\n", line);
 103                 } else {
 104                     const char *rest = end_of_keysym + 1;
 105                     char *rest2;
 106                     int keycode = strtol(rest, &rest2, 0);
 107
 108                     if (rest && strstr(rest, "numlock")) {
 109                         add_to_key_range(&k->keypad_range, keycode);
 110                         add_to_key_range(&k->numlock_range, keysym);
 111                         //fprintf(stderr, "keypad keysym %04x keycode %d\n", keysym, keycode);
 112                     }
 113
 114                     /* if(keycode&0x80)
 115                        keycode=(keycode<<8)^0x80e0; */
 116                     if (keysym < MAX_NORMAL_KEYCODE) {
 117                         //fprintf(stderr,"Setting keysym %s (%d) to %d\n",line,keysym,keycode);
 118                         k->keysym2keycode[keysym] = keycode;
 119                     } else {
 120                         if (k->extra_count >= MAX_EXTRA_COUNT) {
 121                             fprintf(stderr,
 122                                     "Warning: Could not assign keysym %s (0x%x) because of memory constraints.\n",
 123                                     line, keysym);
 124                         } else {
 125 #if 0
 126                             fprintf(stderr, "Setting %d: %d,%d\n",
 127                                     k->extra_count, keysym, keycode);
 128 #endif
 129                             k->keysym2keycode_extra[k->extra_count].
 130                                 keysym = keysym;
 131                             k->keysym2keycode_extra[k->extra_count].
 132                                 keycode = keycode;
 133                             k->extra_count++;
 134                         }
 135                     }
 136                 }
 137             }
 138         }
 139     }
 140     fclose(f);
 141     return k;
 142 }
 143
 144
 145 void *init_keyboard_layout(const name2keysym_t *table, const char *language)
 146 {
 147     return parse_keyboard_layout(table, language, NULL);
 148 }
 149
 150
 151 int keysym2scancode(void *kbd_layout, int keysym)
 152 {
 153     kbd_layout_t *k = kbd_layout;
 154     if (keysym < MAX_NORMAL_KEYCODE) {
 155         if (k->keysym2keycode[keysym] == 0)
 156             fprintf(stderr, "Warning: no scancode found for keysym %d\n",
 157                     keysym);
 158         return k->keysym2keycode[keysym];
 159     } else {
 160         int i;
 161 #ifdef XK_ISO_Left_Tab
 162         if (keysym == XK_ISO_Left_Tab)
 163             keysym = XK_Tab;
 164 #endif
 165         for (i = 0; i < k->extra_count; i++)
 166             if (k->keysym2keycode_extra[i].keysym == keysym)
 167                 return k->keysym2keycode_extra[i].keycode;
 168     }
 169     return 0;
 170 }
 171
 172 int keycode_is_keypad(void *kbd_layout, int keycode)
 173 {
 174     kbd_layout_t *k = kbd_layout;
 175     struct key_range *kr;
 176
 177     for (kr = k->keypad_range; kr; kr = kr->next)
 178         if (keycode >= kr->start && keycode <= kr->end)
 179             return 1;
 180     return 0;
 181 }
 182
 183 int keysym_is_numlock(void *kbd_layout, int keysym)
 184 {
 185     kbd_layout_t *k = kbd_layout;
 186     struct key_range *kr;
 187
 188     for (kr = k->numlock_range; kr; kr = kr->next)
 189         if (keysym >= kr->start && keysym <= kr->end)
 190             return 1;
 191     return 0;
 192 }