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/*
* QEMU keysym to keycode conversion using rdesktop keymaps
*
* Copyright (c) 2004 Johannes Schindelin
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
static int get_keysym(const char *name)
{
const name2keysym_t *p;
for(p = name2keysym; p->name != NULL; p++) {
if (!strcmp(p->name, name))
return p->keysym;
}
return 0;
}
struct key_range {
int start;
int end;
struct key_range *next;
};
#define MAX_NORMAL_KEYCODE 512
#define MAX_EXTRA_COUNT 256
typedef struct {
uint16_t keysym2keycode[MAX_NORMAL_KEYCODE];
struct {
int keysym;
uint16_t keycode;
} keysym2keycode_extra[MAX_EXTRA_COUNT];
int extra_count;
struct key_range *keypad_range;
struct key_range *numlock_range;
} kbd_layout_t;
static void add_to_key_range(struct key_range **krp, int code) {
struct key_range *kr;
for (kr = *krp; kr; kr = kr->next) {
if (code >= kr->start && code <= kr->end)
break;
if (code == kr->start - 1) {
kr->start--;
break;
}
if (code == kr->end + 1) {
kr->end++;
break;
}
}
if (kr == NULL) {
kr = qemu_mallocz(sizeof(*kr));
kr->start = kr->end = code;
kr->next = *krp;
*krp = kr;
}
}
static kbd_layout_t *parse_keyboard_layout(const char *language,
kbd_layout_t * k)
{
FILE *f;
char file_name[1024];
char line[1024];
int len;
snprintf(file_name, sizeof(file_name),
"%s/keymaps/%s", bios_dir, language);
if (!k)
k = qemu_mallocz(sizeof(kbd_layout_t));
if (!(f = fopen(file_name, "r"))) {
fprintf(stderr,
"Could not read keymap file: '%s'\n", file_name);
return 0;
}
for(;;) {
if (fgets(line, 1024, f) == NULL)
break;
len = strlen(line);
if (len > 0 && line[len - 1] == '\n')
line[len - 1] = '\0';
if (line[0] == '#')
continue;
if (!strncmp(line, "map ", 4))
continue;
if (!strncmp(line, "include ", 8)) {
parse_keyboard_layout(line + 8, k);
} else {
char *end_of_keysym = line;
while (*end_of_keysym != 0 && *end_of_keysym != ' ')
end_of_keysym++;
if (*end_of_keysym) {
int keysym;
*end_of_keysym = 0;
keysym = get_keysym(line);
if (keysym == 0) {
// fprintf(stderr, "Warning: unknown keysym %s\n", line);
} else {
const char *rest = end_of_keysym + 1;
char *rest2;
int keycode = strtol(rest, &rest2, 0);
if (rest && strstr(rest, "numlock")) {
add_to_key_range(&k->keypad_range, keycode);
add_to_key_range(&k->numlock_range, keysym);
//fprintf(stderr, "keypad keysym %04x keycode %d\n", keysym, keycode);
}
/* if(keycode&0x80)
keycode=(keycode<<8)^0x80e0; */
if (keysym < MAX_NORMAL_KEYCODE) {
//fprintf(stderr,"Setting keysym %s (%d) to %d\n",line,keysym,keycode);
k->keysym2keycode[keysym] = keycode;
} else {
if (k->extra_count >= MAX_EXTRA_COUNT) {
fprintf(stderr,
"Warning: Could not assign keysym %s (0x%x) because of memory constraints.\n",
line, keysym);
} else {
#if 0
fprintf(stderr, "Setting %d: %d,%d\n",
k->extra_count, keysym, keycode);
#endif
k->keysym2keycode_extra[k->extra_count].
keysym = keysym;
k->keysym2keycode_extra[k->extra_count].
keycode = keycode;
k->extra_count++;
}
}
}
}
}
}
fclose(f);
return k;
}
static void *init_keyboard_layout(const char *language)
{
return parse_keyboard_layout(language, 0);
}
static int keysym2scancode(void *kbd_layout, int keysym)
{
kbd_layout_t *k = kbd_layout;
if (keysym < MAX_NORMAL_KEYCODE) {
if (k->keysym2keycode[keysym] == 0)
fprintf(stderr, "Warning: no scancode found for keysym %d\n",
keysym);
return k->keysym2keycode[keysym];
} else {
int i;
#ifdef XK_ISO_Left_Tab
if (keysym == XK_ISO_Left_Tab)
keysym = XK_Tab;
#endif
for (i = 0; i < k->extra_count; i++)
if (k->keysym2keycode_extra[i].keysym == keysym)
return k->keysym2keycode_extra[i].keycode;
}
return 0;
}
static inline int keycode_is_keypad(void *kbd_layout, int keycode)
{
kbd_layout_t *k = kbd_layout;
struct key_range *kr;
for (kr = k->keypad_range; kr; kr = kr->next)
if (keycode >= kr->start && keycode <= kr->end)
return 1;
return 0;
}
static inline int keysym_is_numlock(void *kbd_layout, int keysym)
{
kbd_layout_t *k = kbd_layout;
struct key_range *kr;
for (kr = k->numlock_range; kr; kr = kr->next)
if (keysym >= kr->start && keysym <= kr->end)
return 1;
return 0;
}
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