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      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 }
    193