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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     /* This file is used by both, UI and core components. There are differences
     68      * in the way how keymap file path is obtained for these two different
     69      * configurations. */
     70 #if defined(CONFIG_STANDALONE_UI)
     71     char filename[2048];
     72 #else
     73     char * filename;
     74 #endif  // CONFIG_STANDALONE_UI
     75     char line[1024];
     76     int len;
     77 
     78 #if defined(CONFIG_STANDALONE_UI)
     79     if (android_core_qemu_find_file(QEMU_FILE_TYPE_KEYMAP, language,
     80                                     filename, sizeof(filename))) {
     81         fprintf(stderr,
     82             "Could not read keymap file: '%s'\n", language);
     83         return NULL;
     84     }
     85 #else
     86     filename = qemu_find_file(QEMU_FILE_TYPE_KEYMAP, language);
     87     if (!filename) {
     88         fprintf(stderr,
     89             "Could not read keymap file: '%s'\n", language);
     90         return NULL;
     91     }
     92 #endif  // CONFIG_STANDALONE_UI
     93 
     94     if (!k)
     95 	k = qemu_mallocz(sizeof(kbd_layout_t));
     96     if (!(f = fopen(filename, "r"))) {
     97 	fprintf(stderr,
     98 		"Could not read keymap file: '%s'\n", language);
     99 	return NULL;
    100     }
    101 #if defined(CONFIG_STANDALONE_UI)
    102     qemu_free(filename);
    103 #endif  // CONFIG_STANDALONE_UI
    104     for(;;) {
    105 	if (fgets(line, 1024, f) == NULL)
    106             break;
    107         len = strlen(line);
    108         if (len > 0 && line[len - 1] == '\n')
    109             line[len - 1] = '\0';
    110         if (line[0] == '#')
    111 	    continue;
    112 	if (!strncmp(line, "map ", 4))
    113 	    continue;
    114 	if (!strncmp(line, "include ", 8)) {
    115 	    parse_keyboard_layout(table, line + 8, k);
    116         } else {
    117 	    char *end_of_keysym = line;
    118 	    while (*end_of_keysym != 0 && *end_of_keysym != ' ')
    119 		end_of_keysym++;
    120 	    if (*end_of_keysym) {
    121 		int keysym;
    122 		*end_of_keysym = 0;
    123 		keysym = get_keysym(table, line);
    124 		if (keysym == 0) {
    125                     //		    fprintf(stderr, "Warning: unknown keysym %s\n", line);
    126 		} else {
    127 		    const char *rest = end_of_keysym + 1;
    128 		    char *rest2;
    129 		    int keycode = strtol(rest, &rest2, 0);
    130 
    131 		    if (rest && strstr(rest, "numlock")) {
    132 			add_to_key_range(&k->keypad_range, keycode);
    133 			add_to_key_range(&k->numlock_range, keysym);
    134 			//fprintf(stderr, "keypad keysym %04x keycode %d\n", keysym, keycode);
    135 		    }
    136 
    137 		    /* if(keycode&0x80)
    138 		       keycode=(keycode<<8)^0x80e0; */
    139 		    if (keysym < MAX_NORMAL_KEYCODE) {
    140 			//fprintf(stderr,"Setting keysym %s (%d) to %d\n",line,keysym,keycode);
    141 			k->keysym2keycode[keysym] = keycode;
    142 		    } else {
    143 			if (k->extra_count >= MAX_EXTRA_COUNT) {
    144 			    fprintf(stderr,
    145 				    "Warning: Could not assign keysym %s (0x%x) because of memory constraints.\n",
    146 				    line, keysym);
    147 			} else {
    148 #if 0
    149 			    fprintf(stderr, "Setting %d: %d,%d\n",
    150 				    k->extra_count, keysym, keycode);
    151 #endif
    152 			    k->keysym2keycode_extra[k->extra_count].
    153 				keysym = keysym;
    154 			    k->keysym2keycode_extra[k->extra_count].
    155 				keycode = keycode;
    156 			    k->extra_count++;
    157 			}
    158 		    }
    159 		}
    160 	    }
    161 	}
    162     }
    163     fclose(f);
    164     return k;
    165 }
    166 
    167 
    168 void *init_keyboard_layout(const name2keysym_t *table, const char *language)
    169 {
    170     return parse_keyboard_layout(table, language, NULL);
    171 }
    172 
    173 
    174 int keysym2scancode(void *kbd_layout, int keysym)
    175 {
    176     kbd_layout_t *k = kbd_layout;
    177     if (keysym < MAX_NORMAL_KEYCODE) {
    178 	if (k->keysym2keycode[keysym] == 0)
    179 	    fprintf(stderr, "Warning: no scancode found for keysym %d\n",
    180 		    keysym);
    181 	return k->keysym2keycode[keysym];
    182     } else {
    183 	int i;
    184 #ifdef XK_ISO_Left_Tab
    185 	if (keysym == XK_ISO_Left_Tab)
    186 	    keysym = XK_Tab;
    187 #endif
    188 	for (i = 0; i < k->extra_count; i++)
    189 	    if (k->keysym2keycode_extra[i].keysym == keysym)
    190 		return k->keysym2keycode_extra[i].keycode;
    191     }
    192     return 0;
    193 }
    194 
    195 int keycode_is_keypad(void *kbd_layout, int keycode)
    196 {
    197     kbd_layout_t *k = kbd_layout;
    198     struct key_range *kr;
    199 
    200     for (kr = k->keypad_range; kr; kr = kr->next)
    201         if (keycode >= kr->start && keycode <= kr->end)
    202             return 1;
    203     return 0;
    204 }
    205 
    206 int keysym_is_numlock(void *kbd_layout, int keysym)
    207 {
    208     kbd_layout_t *k = kbd_layout;
    209     struct key_range *kr;
    210 
    211     for (kr = k->numlock_range; kr; kr = kr->next)
    212         if (keysym >= kr->start && keysym <= kr->end)
    213             return 1;
    214     return 0;
    215 }
    216