Annotation of qemu/keymaps.c, revision 1.1.1.4

1.1       root        1: /*
                      2:  * QEMU keysym to keycode conversion using rdesktop keymaps
1.1.1.3   root        3:  *
1.1       root        4:  * Copyright (c) 2004 Johannes Schindelin
1.1.1.3   root        5:  *
1.1       root        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: {
1.1.1.4 ! root       27:     const name2keysym_t *p;
1.1       root       28:     for(p = name2keysym; p->name != NULL; p++) {
                     29:         if (!strcmp(p->name, name))
                     30:             return p->keysym;
                     31:     }
                     32:     return 0;
                     33: }
                     34: 
1.1.1.3   root       35: struct key_range {
                     36:     int start;
                     37:     int end;
                     38:     struct key_range *next;
                     39: };
                     40: 
1.1       root       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;
1.1.1.3   root       50:     struct key_range *keypad_range;
                     51:     struct key_range *numlock_range;
1.1       root       52: } kbd_layout_t;
                     53: 
1.1.1.3   root       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));
1.1.1.4 ! root       70:         kr->start = kr->end = code;
        !            71:         kr->next = *krp;
        !            72:         *krp = kr;
1.1.1.3   root       73:     }
                     74: }
                     75: 
1.1       root       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;
1.1.1.3   root      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: 
1.1       root      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 {
1.1.1.2   root      138: #if 0
1.1       root      139:                            fprintf(stderr, "Setting %d: %d,%d\n",
                    140:                                    k->extra_count, keysym, keycode);
1.1.1.2   root      141: #endif
1.1       root      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: }
1.1.1.3   root      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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