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
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 = qemu_mallocz(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#if defined(CONFIG_STANDALONE_UI)
71    char filename[2048];
72#else
73    char * filename;
74#endif  // CONFIG_STANDALONE_UI
75    char line[1024];
76    int len;
77
78#if defined(CONFIG_STANDALONE_UI)
79    if (android_core_qemu_find_file(QEMU_FILE_TYPE_KEYMAP, language,
80                                    filename, sizeof(filename))) {
81        fprintf(stderr,
82            "Could not read keymap file: '%s'\n", language);
83        return NULL;
84    }
85#else
86    filename = qemu_find_file(QEMU_FILE_TYPE_KEYMAP, language);
87    if (!filename) {
88        fprintf(stderr,
89            "Could not read keymap file: '%s'\n", language);
90        return NULL;
91    }
92#endif  // CONFIG_STANDALONE_UI
93
94    if (!k)
95	k = qemu_mallocz(sizeof(kbd_layout_t));
96    if (!(f = fopen(filename, "r"))) {
97	fprintf(stderr,
98		"Could not read keymap file: '%s'\n", language);
99	return NULL;
100    }
101#if defined(CONFIG_STANDALONE_UI)
102    qemu_free(filename);
103#endif  // CONFIG_STANDALONE_UI
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(keycode&0x80)
138		       keycode=(keycode<<8)^0x80e0; */
139		    if (keysym < MAX_NORMAL_KEYCODE) {
140			//fprintf(stderr,"Setting keysym %s (%d) to %d\n",line,keysym,keycode);
141			k->keysym2keycode[keysym] = keycode;
142		    } else {
143			if (k->extra_count >= MAX_EXTRA_COUNT) {
144			    fprintf(stderr,
145				    "Warning: Could not assign keysym %s (0x%x) because of memory constraints.\n",
146				    line, keysym);
147			} else {
148#if 0
149			    fprintf(stderr, "Setting %d: %d,%d\n",
150				    k->extra_count, keysym, keycode);
151#endif
152			    k->keysym2keycode_extra[k->extra_count].
153				keysym = keysym;
154			    k->keysym2keycode_extra[k->extra_count].
155				keycode = keycode;
156			    k->extra_count++;
157			}
158		    }
159		}
160	    }
161	}
162    }
163    fclose(f);
164    return k;
165}
166
167
168void *init_keyboard_layout(const name2keysym_t *table, const char *language)
169{
170    return parse_keyboard_layout(table, language, NULL);
171}
172
173
174int keysym2scancode(void *kbd_layout, int keysym)
175{
176    kbd_layout_t *k = kbd_layout;
177    if (keysym < MAX_NORMAL_KEYCODE) {
178	if (k->keysym2keycode[keysym] == 0)
179	    fprintf(stderr, "Warning: no scancode found for keysym %d\n",
180		    keysym);
181	return k->keysym2keycode[keysym];
182    } else {
183	int i;
184#ifdef XK_ISO_Left_Tab
185	if (keysym == XK_ISO_Left_Tab)
186	    keysym = XK_Tab;
187#endif
188	for (i = 0; i < k->extra_count; i++)
189	    if (k->keysym2keycode_extra[i].keysym == keysym)
190		return k->keysym2keycode_extra[i].keycode;
191    }
192    return 0;
193}
194
195int keycode_is_keypad(void *kbd_layout, int keycode)
196{
197    kbd_layout_t *k = kbd_layout;
198    struct key_range *kr;
199
200    for (kr = k->keypad_range; kr; kr = kr->next)
201        if (keycode >= kr->start && keycode <= kr->end)
202            return 1;
203    return 0;
204}
205
206int keysym_is_numlock(void *kbd_layout, int keysym)
207{
208    kbd_layout_t *k = kbd_layout;
209    struct key_range *kr;
210
211    for (kr = k->numlock_range; kr; kr = kr->next)
212        if (keysym >= kr->start && keysym <= kr->end)
213            return 1;
214    return 0;
215}
216