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 #include "trace.h"
  29 #include "qemu/error-report.h"
  30
  31 static int get_keysym(const name2keysym_t *table,
  32                       const char *name)
  33 {
  34     const name2keysym_t *p;
  35     for(p = table; p->name != NULL; p++) {
  36         if (!strcmp(p->name, name)) {
  37             return p->keysym;
  38         }
  39     }
  40     if (name[0] == 'U' && strlen(name) == 5) { /* try unicode Uxxxx */
  41         char *end;
  42         int ret = (int)strtoul(name + 1, &end, 16);
  43         if (*end == '\0' && ret > 0) {
  44             return ret;
  45         }
  46     }
  47     return 0;
  48 }
  49
  50
  51 static void add_to_key_range(struct key_range **krp, int code) {
  52     struct key_range *kr;
  53     for (kr = *krp; kr; kr = kr->next) {
  54         if (code >= kr->start && code <= kr->end) {
  55             break;
  56         }
  57         if (code == kr->start - 1) {
  58             kr->start--;
  59             break;
  60         }
  61         if (code == kr->end + 1) {
  62             kr->end++;
  63             break;
  64         }
  65     }
  66     if (kr == NULL) {
  67         kr = g_malloc0(sizeof(*kr));
  68         kr->start = kr->end = code;
  69         kr->next = *krp;
  70         *krp = kr;
  71     }
  72 }
  73
  74 static void add_keysym(char *line, int keysym, int keycode, kbd_layout_t *k) {
  75     if (keysym < MAX_NORMAL_KEYCODE) {
  76         trace_keymap_add("normal", keysym, keycode, line);
  77         k->keysym2keycode[keysym] = keycode;
  78     } else {
  79         if (k->extra_count >= MAX_EXTRA_COUNT) {
  80             warn_report("Could not assign keysym %s (0x%x)"
  81                         " because of memory constraints.", line, keysym);
  82         } else {
  83             trace_keymap_add("extra", keysym, keycode, line);
  84             k->keysym2keycode_extra[k->extra_count].
  85             keysym = keysym;
  86             k->keysym2keycode_extra[k->extra_count].
  87             keycode = keycode;
  88             k->extra_count++;
  89         }
  90     }
  91 }
  92
  93 static kbd_layout_t *parse_keyboard_layout(const name2keysym_t *table,
  94                                            const char *language,
  95                                            kbd_layout_t *k)
  96 {
  97     FILE *f;
  98     char * filename;
  99     char line[1024];
 100     char keyname[64];
 101     int len;
 102
 103     filename = qemu_find_file(QEMU_FILE_TYPE_KEYMAP, language);
 104     trace_keymap_parse(filename);
 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             int offset = 0;
 134             while (line[offset] != 0 &&
 135                    line[offset] != ' ' &&
 136                    offset < sizeof(keyname) - 1) {
 137                 keyname[offset] = line[offset];
 138                 offset++;
 139             }
 140             keyname[offset] = 0;
 141             if (strlen(keyname)) {
 142                 int keysym;
 143                 keysym = get_keysym(table, keyname);
 144                 if (keysym == 0) {
 145                     /* warn_report("unknown keysym %s", line);*/
 146                 } else {
 147                     const char *rest = line + offset + 1;
 148                     int keycode = strtol(rest, NULL, 0);
 149
 150                     if (strstr(rest, "numlock")) {
 151                         add_to_key_range(&k->keypad_range, keycode);
 152                         add_to_key_range(&k->numlock_range, keysym);
 153                         /* fprintf(stderr, "keypad keysym %04x keycode %d\n",
 154                                    keysym, keycode); */
 155                     }
 156
 157                     if (strstr(rest, "shift")) {
 158                         keycode |= SCANCODE_SHIFT;
 159                     }
 160                     if (strstr(rest, "altgr")) {
 161                         keycode |= SCANCODE_ALTGR;
 162                     }
 163                     if (strstr(rest, "ctrl")) {
 164                         keycode |= SCANCODE_CTRL;
 165                     }
 166
 167                     add_keysym(line, keysym, keycode, k);
 168
 169                     if (strstr(rest, "addupper")) {
 170                         char *c;
 171                         for (c = keyname; *c; c++) {
 172                             *c = qemu_toupper(*c);
 173                         }
 174                         keysym = get_keysym(table, keyname);
 175                         if (keysym) {
 176                             add_keysym(line, keysym,
 177                                        keycode | SCANCODE_SHIFT, k);
 178                         }
 179                     }
 180                 }
 181             }
 182         }
 183     }
 184     fclose(f);
 185     return k;
 186 }
 187
 188
 189 void *init_keyboard_layout(const name2keysym_t *table, const char *language)
 190 {
 191     return parse_keyboard_layout(table, language, NULL);
 192 }
 193
 194
 195 int keysym2scancode(void *kbd_layout, int keysym)
 196 {
 197     kbd_layout_t *k = kbd_layout;
 198     if (keysym < MAX_NORMAL_KEYCODE) {
 199         if (k->keysym2keycode[keysym] == 0) {
 200             trace_keymap_unmapped(keysym);
 201             warn_report("no scancode found for keysym %d", keysym);
 202         }
 203         return k->keysym2keycode[keysym];
 204     } else {
 205         int i;
 206 #ifdef XK_ISO_Left_Tab
 207         if (keysym == XK_ISO_Left_Tab) {
 208             keysym = XK_Tab;
 209         }
 210 #endif
 211         for (i = 0; i < k->extra_count; i++) {
 212             if (k->keysym2keycode_extra[i].keysym == keysym) {
 213                 return k->keysym2keycode_extra[i].keycode;
 214             }
 215         }
 216     }
 217     return 0;
 218 }
 219
 220 int keycode_is_keypad(void *kbd_layout, int keycode)
 221 {
 222     kbd_layout_t *k = kbd_layout;
 223     struct key_range *kr;
 224
 225     for (kr = k->keypad_range; kr; kr = kr->next) {
 226         if (keycode >= kr->start && keycode <= kr->end) {
 227             return 1;
 228         }
 229     }
 230     return 0;
 231 }
 232
 233 int keysym_is_numlock(void *kbd_layout, int keysym)
 234 {
 235     kbd_layout_t *k = kbd_layout;
 236     struct key_range *kr;
 237
 238     for (kr = k->numlock_range; kr; kr = kr->next) {
 239         if (keysym >= kr->start && keysym <= kr->end) {
 240             return 1;
 241         }
 242     }
 243     return 0;
 244 }