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Annotation of qemu/ui/keymaps.c, revision 1.1

1.1     ! root        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 void add_keysym(char *line, int keysym, int keycode, kbd_layout_t *k) {
        !            63:     if (keysym < MAX_NORMAL_KEYCODE) {
        !            64:        //fprintf(stderr,"Setting keysym %s (%d) to %d\n",line,keysym,keycode);
        !            65:        k->keysym2keycode[keysym] = keycode;
        !            66:     } else {
        !            67:        if (k->extra_count >= MAX_EXTRA_COUNT) {
        !            68:            fprintf(stderr,
        !            69:                    "Warning: Could not assign keysym %s (0x%x) because of memory constraints.\n",
        !            70:                    line, keysym);
        !            71:        } else {
        !            72: #if 0
        !            73:            fprintf(stderr, "Setting %d: %d,%d\n",
        !            74:                    k->extra_count, keysym, keycode);
        !            75: #endif
        !            76:            k->keysym2keycode_extra[k->extra_count].
        !            77:                keysym = keysym;
        !            78:            k->keysym2keycode_extra[k->extra_count].
        !            79:                keycode = keycode;
        !            80:            k->extra_count++;
        !            81:        }
        !            82:     }
        !            83: }
        !            84: 
        !            85: static kbd_layout_t *parse_keyboard_layout(const name2keysym_t *table,
        !            86:                                           const char *language,
        !            87:                                           kbd_layout_t * k)
        !            88: {
        !            89:     FILE *f;
        !            90:     char * filename;
        !            91:     char line[1024];
        !            92:     int len;
        !            93: 
        !            94:     filename = qemu_find_file(QEMU_FILE_TYPE_KEYMAP, language);
        !            95: 
        !            96:     if (!k)
        !            97:        k = qemu_mallocz(sizeof(kbd_layout_t));
        !            98:     if (!(filename && (f = fopen(filename, "r")))) {
        !            99:        fprintf(stderr,
        !           100:                "Could not read keymap file: '%s'\n", language);
        !           101:        return NULL;
        !           102:     }
        !           103:     qemu_free(filename);
        !           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 (rest && strstr(rest, "shift"))
        !           138:                        keycode |= SCANCODE_SHIFT;
        !           139:                    if (rest && strstr(rest, "altgr"))
        !           140:                        keycode |= SCANCODE_ALTGR;
        !           141:                    if (rest && strstr(rest, "ctrl"))
        !           142:                        keycode |= SCANCODE_CTRL;
        !           143: 
        !           144:                    add_keysym(line, keysym, keycode, k);
        !           145: 
        !           146:                    if (rest && strstr(rest, "addupper")) {
        !           147:                        char *c;
        !           148:                        for (c = line; *c; c++)
        !           149:                            *c = toupper(*c);
        !           150:                        keysym = get_keysym(table, line);
        !           151:                        if (keysym)
        !           152:                            add_keysym(line, keysym, keycode | SCANCODE_SHIFT, k);
        !           153:                    }
        !           154:                }
        !           155:            }
        !           156:        }
        !           157:     }
        !           158:     fclose(f);
        !           159:     return k;
        !           160: }
        !           161: 
        !           162: 
        !           163: void *init_keyboard_layout(const name2keysym_t *table, const char *language)
        !           164: {
        !           165:     return parse_keyboard_layout(table, language, NULL);
        !           166: }
        !           167: 
        !           168: 
        !           169: int keysym2scancode(void *kbd_layout, int keysym)
        !           170: {
        !           171:     kbd_layout_t *k = kbd_layout;
        !           172:     if (keysym < MAX_NORMAL_KEYCODE) {
        !           173:        if (k->keysym2keycode[keysym] == 0)
        !           174:            fprintf(stderr, "Warning: no scancode found for keysym %d\n",
        !           175:                    keysym);
        !           176:        return k->keysym2keycode[keysym];
        !           177:     } else {
        !           178:        int i;
        !           179: #ifdef XK_ISO_Left_Tab
        !           180:        if (keysym == XK_ISO_Left_Tab)
        !           181:            keysym = XK_Tab;
        !           182: #endif
        !           183:        for (i = 0; i < k->extra_count; i++)
        !           184:            if (k->keysym2keycode_extra[i].keysym == keysym)
        !           185:                return k->keysym2keycode_extra[i].keycode;
        !           186:     }
        !           187:     return 0;
        !           188: }
        !           189: 
        !           190: int keycode_is_keypad(void *kbd_layout, int keycode)
        !           191: {
        !           192:     kbd_layout_t *k = kbd_layout;
        !           193:     struct key_range *kr;
        !           194: 
        !           195:     for (kr = k->keypad_range; kr; kr = kr->next)
        !           196:         if (keycode >= kr->start && keycode <= kr->end)
        !           197:             return 1;
        !           198:     return 0;
        !           199: }
        !           200: 
        !           201: int keysym_is_numlock(void *kbd_layout, int keysym)
        !           202: {
        !           203:     kbd_layout_t *k = kbd_layout;
        !           204:     struct key_range *kr;
        !           205: 
        !           206:     for (kr = k->numlock_range; kr; kr = kr->next)
        !           207:         if (keysym >= kr->start && keysym <= kr->end)
        !           208:             return 1;
        !           209:     return 0;
        !           210: }

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