Annotation of qemu/keymaps.c, revision 1.1.1.3

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: {
                     27:     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: 
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));
        !            70:        if (kr) {
        !            71:            kr->start = kr->end = code;
        !            72:            kr->next = *krp;
        !            73:            *krp = kr;
        !            74:        }
        !            75:     }
        !            76: }
        !            77: 
1.1       root       78: static kbd_layout_t *parse_keyboard_layout(const char *language,
                     79:                                           kbd_layout_t * k)
                     80: {
                     81:     FILE *f;
                     82:     char file_name[1024];
                     83:     char line[1024];
                     84:     int len;
                     85: 
                     86:     snprintf(file_name, sizeof(file_name),
                     87:              "%s/keymaps/%s", bios_dir, language);
                     88: 
                     89:     if (!k)
                     90:        k = qemu_mallocz(sizeof(kbd_layout_t));
                     91:     if (!k)
                     92:         return 0;
                     93:     if (!(f = fopen(file_name, "r"))) {
                     94:        fprintf(stderr,
                     95:                "Could not read keymap file: '%s'\n", file_name);
                     96:        return 0;
                     97:     }
                     98:     for(;;) {
                     99:        if (fgets(line, 1024, f) == NULL)
                    100:             break;
                    101:         len = strlen(line);
                    102:         if (len > 0 && line[len - 1] == '\n')
                    103:             line[len - 1] = '\0';
                    104:         if (line[0] == '#')
                    105:            continue;
                    106:        if (!strncmp(line, "map ", 4))
                    107:            continue;
                    108:        if (!strncmp(line, "include ", 8)) {
                    109:            parse_keyboard_layout(line + 8, k);
                    110:         } else {
                    111:            char *end_of_keysym = line;
                    112:            while (*end_of_keysym != 0 && *end_of_keysym != ' ')
                    113:                end_of_keysym++;
                    114:            if (*end_of_keysym) {
                    115:                int keysym;
                    116:                *end_of_keysym = 0;
                    117:                keysym = get_keysym(line);
                    118:                if (keysym == 0) {
                    119:                     //             fprintf(stderr, "Warning: unknown keysym %s\n", line);
                    120:                } else {
                    121:                    const char *rest = end_of_keysym + 1;
1.1.1.3 ! root      122:                    char *rest2;
        !           123:                    int keycode = strtol(rest, &rest2, 0);
        !           124: 
        !           125:                    if (rest && strstr(rest, "numlock")) {
        !           126:                        add_to_key_range(&k->keypad_range, keycode);
        !           127:                        add_to_key_range(&k->numlock_range, keysym);
        !           128:                        //fprintf(stderr, "keypad keysym %04x keycode %d\n", keysym, keycode);
        !           129:                    }
        !           130: 
1.1       root      131:                    /* if(keycode&0x80)
                    132:                       keycode=(keycode<<8)^0x80e0; */
                    133:                    if (keysym < MAX_NORMAL_KEYCODE) {
                    134:                        //fprintf(stderr,"Setting keysym %s (%d) to %d\n",line,keysym,keycode);
                    135:                        k->keysym2keycode[keysym] = keycode;
                    136:                    } else {
                    137:                        if (k->extra_count >= MAX_EXTRA_COUNT) {
                    138:                            fprintf(stderr,
                    139:                                    "Warning: Could not assign keysym %s (0x%x) because of memory constraints.\n",
                    140:                                    line, keysym);
                    141:                        } else {
1.1.1.2   root      142: #if 0
1.1       root      143:                            fprintf(stderr, "Setting %d: %d,%d\n",
                    144:                                    k->extra_count, keysym, keycode);
1.1.1.2   root      145: #endif
1.1       root      146:                            k->keysym2keycode_extra[k->extra_count].
                    147:                                keysym = keysym;
                    148:                            k->keysym2keycode_extra[k->extra_count].
                    149:                                keycode = keycode;
                    150:                            k->extra_count++;
                    151:                        }
                    152:                    }
                    153:                }
                    154:            }
                    155:        }
                    156:     }
                    157:     fclose(f);
                    158:     return k;
                    159: }
                    160: 
                    161: static void *init_keyboard_layout(const char *language)
                    162: {
                    163:     return parse_keyboard_layout(language, 0);
                    164: }
                    165: 
                    166: static int keysym2scancode(void *kbd_layout, int keysym)
                    167: {
                    168:     kbd_layout_t *k = kbd_layout;
                    169:     if (keysym < MAX_NORMAL_KEYCODE) {
                    170:        if (k->keysym2keycode[keysym] == 0)
                    171:            fprintf(stderr, "Warning: no scancode found for keysym %d\n",
                    172:                    keysym);
                    173:        return k->keysym2keycode[keysym];
                    174:     } else {
                    175:        int i;
                    176: #ifdef XK_ISO_Left_Tab
                    177:        if (keysym == XK_ISO_Left_Tab)
                    178:            keysym = XK_Tab;
                    179: #endif
                    180:        for (i = 0; i < k->extra_count; i++)
                    181:            if (k->keysym2keycode_extra[i].keysym == keysym)
                    182:                return k->keysym2keycode_extra[i].keycode;
                    183:     }
                    184:     return 0;
                    185: }
1.1.1.3 ! root      186: 
        !           187: static inline int keycode_is_keypad(void *kbd_layout, int keycode)
        !           188: {
        !           189:     kbd_layout_t *k = kbd_layout;
        !           190:     struct key_range *kr;
        !           191: 
        !           192:     for (kr = k->keypad_range; kr; kr = kr->next)
        !           193:         if (keycode >= kr->start && keycode <= kr->end)
        !           194:             return 1;
        !           195:     return 0;
        !           196: }
        !           197: 
        !           198: static inline int keysym_is_numlock(void *kbd_layout, int keysym)
        !           199: {
        !           200:     kbd_layout_t *k = kbd_layout;
        !           201:     struct key_range *kr;
        !           202: 
        !           203:     for (kr = k->numlock_range; kr; kr = kr->next)
        !           204:         if (keysym >= kr->start && keysym <= kr->end)
        !           205:             return 1;
        !           206:     return 0;
        !           207: }

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