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/sysemu.h"
27
28static 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
40static 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 = g_malloc0(sizeof(*kr));
56        kr->start = kr->end = code;
57        kr->next = *krp;
58        *krp = kr;
59    }
60}
61
62static 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    char * filename;
71    char line[1024];
72    int len;
73
74    filename = qemu_find_file(QEMU_FILE_TYPE_KEYMAP, language);
75    if (!filename) {
76        fprintf(stderr,
77            "Could not read keymap file: '%s'\n", language);
78        return NULL;
79    }
80
81    if (!k)
82	k = g_malloc0(sizeof(kbd_layout_t));
83    if (!(f = fopen(filename, "r"))) {
84	fprintf(stderr,
85		"Could not read keymap file: '%s'\n", language);
86	return NULL;
87    }
88    for(;;) {
89	if (fgets(line, 1024, f) == NULL)
90            break;
91        len = strlen(line);
92        if (len > 0 && line[len - 1] == '\n')
93            line[len - 1] = '\0';
94        if (line[0] == '#')
95	    continue;
96	if (!strncmp(line, "map ", 4))
97	    continue;
98	if (!strncmp(line, "include ", 8)) {
99	    parse_keyboard_layout(table, line + 8, k);
100        } else {
101	    char *end_of_keysym = line;
102	    while (*end_of_keysym != 0 && *end_of_keysym != ' ')
103		end_of_keysym++;
104	    if (*end_of_keysym) {
105		int keysym;
106		*end_of_keysym = 0;
107		keysym = get_keysym(table, line);
108		if (keysym == 0) {
109                    //		    fprintf(stderr, "Warning: unknown keysym %s\n", line);
110		} else {
111		    const char *rest = end_of_keysym + 1;
112		    char *rest2;
113		    int keycode = strtol(rest, &rest2, 0);
114
115		    if (rest && strstr(rest, "numlock")) {
116			add_to_key_range(&k->keypad_range, keycode);
117			add_to_key_range(&k->numlock_range, keysym);
118			//fprintf(stderr, "keypad keysym %04x keycode %d\n", keysym, keycode);
119		    }
120
121		    /* if(keycode&0x80)
122		       keycode=(keycode<<8)^0x80e0; */
123		    if (keysym < MAX_NORMAL_KEYCODE) {
124			//fprintf(stderr,"Setting keysym %s (%d) to %d\n",line,keysym,keycode);
125			k->keysym2keycode[keysym] = keycode;
126		    } else {
127			if (k->extra_count >= MAX_EXTRA_COUNT) {
128			    fprintf(stderr,
129				    "Warning: Could not assign keysym %s (0x%x) because of memory constraints.\n",
130				    line, keysym);
131			} else {
132#if 0
133			    fprintf(stderr, "Setting %d: %d,%d\n",
134				    k->extra_count, keysym, keycode);
135#endif
136			    k->keysym2keycode_extra[k->extra_count].
137				keysym = keysym;
138			    k->keysym2keycode_extra[k->extra_count].
139				keycode = keycode;
140			    k->extra_count++;
141			}
142		    }
143		}
144	    }
145	}
146    }
147    fclose(f);
148    return k;
149}
150
151
152void *init_keyboard_layout(const name2keysym_t *table, const char *language)
153{
154    return parse_keyboard_layout(table, language, NULL);
155}
156
157
158int keysym2scancode(void *kbd_layout, int keysym)
159{
160    kbd_layout_t *k = kbd_layout;
161    if (keysym < MAX_NORMAL_KEYCODE) {
162	if (k->keysym2keycode[keysym] == 0)
163	    fprintf(stderr, "Warning: no scancode found for keysym %d\n",
164		    keysym);
165	return k->keysym2keycode[keysym];
166    } else {
167	int i;
168#ifdef XK_ISO_Left_Tab
169	if (keysym == XK_ISO_Left_Tab)
170	    keysym = XK_Tab;
171#endif
172	for (i = 0; i < k->extra_count; i++)
173	    if (k->keysym2keycode_extra[i].keysym == keysym)
174		return k->keysym2keycode_extra[i].keycode;
175    }
176    return 0;
177}
178
179int keycode_is_keypad(void *kbd_layout, int keycode)
180{
181    kbd_layout_t *k = kbd_layout;
182    struct key_range *kr;
183
184    for (kr = k->keypad_range; kr; kr = kr->next)
185        if (keycode >= kr->start && keycode <= kr->end)
186            return 1;
187    return 0;
188}
189
190int keysym_is_numlock(void *kbd_layout, int keysym)
191{
192    kbd_layout_t *k = kbd_layout;
193    struct key_range *kr;
194
195    for (kr = k->numlock_range; kr; kr = kr->next)
196        if (keysym >= kr->start && keysym <= kr->end)
197            return 1;
198    return 0;
199}
200