ui/keymaps.c



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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.
 */

#include "qemu/osdep.h"
#include "qemu-common.h"
#include "keymaps.h"
#include "trace.h"
#include "qemu/ctype.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
#include "ui/input.h"

struct keysym2code {
    uint32_t count;
    uint16_t keycodes[4];
};

struct kbd_layout_t {
    GHashTable *hash;
};

static int get_keysym(const name2keysym_t *table,
                      const char *name)
{
    const name2keysym_t *p;
    for(p = table; p->name != NULL; p++) {
        if (!strcmp(p->name, name)) {
            return p->keysym;
        }
    }
    if (name[0] == 'U' && strlen(name) == 5) { /* try unicode Uxxxx */
        char *end;
        int ret = (int)strtoul(name + 1, &end, 16);
        if (*end == '\0' && ret > 0) {
            return ret;
        }
    }
    return 0;
}


static void add_keysym(char *line, int keysym, int keycode, kbd_layout_t *k)
{
    struct keysym2code *keysym2code;

    keysym2code = g_hash_table_lookup(k->hash, GINT_TO_POINTER(keysym));
    if (keysym2code) {
        if (keysym2code->count < ARRAY_SIZE(keysym2code->keycodes)) {
            keysym2code->keycodes[keysym2code->count++] = keycode;
        } else {
            warn_report("more than %zd keycodes for keysym %d",
                        ARRAY_SIZE(keysym2code->keycodes), keysym);
        }
        return;
    }

    keysym2code = g_new0(struct keysym2code, 1);
    keysym2code->keycodes[0] = keycode;
    keysym2code->count = 1;
    g_hash_table_replace(k->hash, GINT_TO_POINTER(keysym), keysym2code);
    trace_keymap_add(keysym, keycode, line);
}

static int parse_keyboard_layout(kbd_layout_t *k,
                                 const name2keysym_t *table,
                                 const char *language, Error **errp)
{
    int ret;
    FILE *f;
    char * filename;
    char line[1024];
    char keyname[64];
    int len;

    filename = qemu_find_file(QEMU_FILE_TYPE_KEYMAP, language);
    trace_keymap_parse(filename);
    f = filename ? fopen(filename, "r") : NULL;
    g_free(filename);