File:  [Qemu by Fabrice Bellard] / qemu / keymaps.c
Revision 1.1.1.4 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 16:50:34 2018 UTC (2 years, 4 months ago) by root
Branches: qemu, MAIN
CVS tags: qemu0105, qemu0104, qemu0103, qemu0102, qemu0101, qemu0100, HEAD
qemu 0.10.0

    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: static int get_keysym(const char *name)
   26: {
   27:     const name2keysym_t *p;
   28:     for(p = name2keysym; p->name != NULL; p++) {
   29:         if (!strcmp(p->name, name))
   30:             return p->keysym;
   31:     }
   32:     return 0;
   33: }
   34: 
   35: struct key_range {
   36:     int start;
   37:     int end;
   38:     struct key_range *next;
   39: };
   40: 
   41: #define MAX_NORMAL_KEYCODE 512
   42: #define MAX_EXTRA_COUNT 256
   43: typedef struct {
   44:     uint16_t keysym2keycode[MAX_NORMAL_KEYCODE];
   45:     struct {
   46: 	int keysym;
   47: 	uint16_t keycode;
   48:     } keysym2keycode_extra[MAX_EXTRA_COUNT];
   49:     int extra_count;
   50:     struct key_range *keypad_range;
   51:     struct key_range *numlock_range;
   52: } kbd_layout_t;
   53: 
   54: static void add_to_key_range(struct key_range **krp, int code) {
   55:     struct key_range *kr;
   56:     for (kr = *krp; kr; kr = kr->next) {
   57: 	if (code >= kr->start && code <= kr->end)
   58: 	    break;
   59: 	if (code == kr->start - 1) {
   60: 	    kr->start--;
   61: 	    break;
   62: 	}
   63: 	if (code == kr->end + 1) {
   64: 	    kr->end++;
   65: 	    break;
   66: 	}
   67:     }
   68:     if (kr == NULL) {
   69: 	kr = qemu_mallocz(sizeof(*kr));
   70:         kr->start = kr->end = code;
   71:         kr->next = *krp;
   72:         *krp = kr;
   73:     }
   74: }
   75: 
   76: static kbd_layout_t *parse_keyboard_layout(const char *language,
   77: 					   kbd_layout_t * k)
   78: {
   79:     FILE *f;
   80:     char file_name[1024];
   81:     char line[1024];
   82:     int len;
   83: 
   84:     snprintf(file_name, sizeof(file_name),
   85:              "%s/keymaps/%s", bios_dir, language);
   86: 
   87:     if (!k)
   88: 	k = qemu_mallocz(sizeof(kbd_layout_t));
   89:     if (!(f = fopen(file_name, "r"))) {
   90: 	fprintf(stderr,
   91: 		"Could not read keymap file: '%s'\n", file_name);
   92: 	return 0;
   93:     }
   94:     for(;;) {
   95: 	if (fgets(line, 1024, f) == NULL)
   96:             break;
   97:         len = strlen(line);
   98:         if (len > 0 && line[len - 1] == '\n')
   99:             line[len - 1] = '\0';
  100:         if (line[0] == '#')
  101: 	    continue;
  102: 	if (!strncmp(line, "map ", 4))
  103: 	    continue;
  104: 	if (!strncmp(line, "include ", 8)) {
  105: 	    parse_keyboard_layout(line + 8, k);
  106:         } else {
  107: 	    char *end_of_keysym = line;
  108: 	    while (*end_of_keysym != 0 && *end_of_keysym != ' ')
  109: 		end_of_keysym++;
  110: 	    if (*end_of_keysym) {
  111: 		int keysym;
  112: 		*end_of_keysym = 0;
  113: 		keysym = get_keysym(line);
  114: 		if (keysym == 0) {
  115:                     //		    fprintf(stderr, "Warning: unknown keysym %s\n", line);
  116: 		} else {
  117: 		    const char *rest = end_of_keysym + 1;
  118: 		    char *rest2;
  119: 		    int keycode = strtol(rest, &rest2, 0);
  120: 
  121: 		    if (rest && strstr(rest, "numlock")) {
  122: 			add_to_key_range(&k->keypad_range, keycode);
  123: 			add_to_key_range(&k->numlock_range, keysym);
  124: 			//fprintf(stderr, "keypad keysym %04x keycode %d\n", keysym, keycode);
  125: 		    }
  126: 
  127: 		    /* if(keycode&0x80)
  128: 		       keycode=(keycode<<8)^0x80e0; */
  129: 		    if (keysym < MAX_NORMAL_KEYCODE) {
  130: 			//fprintf(stderr,"Setting keysym %s (%d) to %d\n",line,keysym,keycode);
  131: 			k->keysym2keycode[keysym] = keycode;
  132: 		    } else {
  133: 			if (k->extra_count >= MAX_EXTRA_COUNT) {
  134: 			    fprintf(stderr,
  135: 				    "Warning: Could not assign keysym %s (0x%x) because of memory constraints.\n",
  136: 				    line, keysym);
  137: 			} else {
  138: #if 0
  139: 			    fprintf(stderr, "Setting %d: %d,%d\n",
  140: 				    k->extra_count, keysym, keycode);
  141: #endif
  142: 			    k->keysym2keycode_extra[k->extra_count].
  143: 				keysym = keysym;
  144: 			    k->keysym2keycode_extra[k->extra_count].
  145: 				keycode = keycode;
  146: 			    k->extra_count++;
  147: 			}
  148: 		    }
  149: 		}
  150: 	    }
  151: 	}
  152:     }
  153:     fclose(f);
  154:     return k;
  155: }
  156: 
  157: static void *init_keyboard_layout(const char *language)
  158: {
  159:     return parse_keyboard_layout(language, 0);
  160: }
  161: 
  162: static int keysym2scancode(void *kbd_layout, int keysym)
  163: {
  164:     kbd_layout_t *k = kbd_layout;
  165:     if (keysym < MAX_NORMAL_KEYCODE) {
  166: 	if (k->keysym2keycode[keysym] == 0)
  167: 	    fprintf(stderr, "Warning: no scancode found for keysym %d\n",
  168: 		    keysym);
  169: 	return k->keysym2keycode[keysym];
  170:     } else {
  171: 	int i;
  172: #ifdef XK_ISO_Left_Tab
  173: 	if (keysym == XK_ISO_Left_Tab)
  174: 	    keysym = XK_Tab;
  175: #endif
  176: 	for (i = 0; i < k->extra_count; i++)
  177: 	    if (k->keysym2keycode_extra[i].keysym == keysym)
  178: 		return k->keysym2keycode_extra[i].keycode;
  179:     }
  180:     return 0;
  181: }
  182: 
  183: static inline int keycode_is_keypad(void *kbd_layout, int keycode)
  184: {
  185:     kbd_layout_t *k = kbd_layout;
  186:     struct key_range *kr;
  187: 
  188:     for (kr = k->keypad_range; kr; kr = kr->next)
  189:         if (keycode >= kr->start && keycode <= kr->end)
  190:             return 1;
  191:     return 0;
  192: }
  193: 
  194: static inline int keysym_is_numlock(void *kbd_layout, int keysym)
  195: {
  196:     kbd_layout_t *k = kbd_layout;
  197:     struct key_range *kr;
  198: 
  199:     for (kr = k->numlock_range; kr; kr = kr->next)
  200:         if (keysym >= kr->start && keysym <= kr->end)
  201:             return 1;
  202:     return 0;
  203: }

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