alloc.c

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Author : Ran Benita
Date : 2012-07-15 15:55:34
Hash : d0097f4e
Message : Pass around xkb_key's instead of keycodes This way we don't need to look up the key every time. We now only deal with keycodes in the public API and in keycodes.c. Also adds an xkb_foreach_key macro, which is used a lot. Signed-off-by: Ran Benita <ran234@gmail.com>
src/alloc.c
/*
 * Copyright (c) 1993 by Silicon Graphics Computer Systems, Inc.
 *
 * Permission to use, copy, modify, and distribute this
 * software and its documentation for any purpose and without
 * fee is hereby granted, provided that the above copyright
 * notice appear in all copies and that both that copyright
 * notice and this permission notice appear in supporting
 * documentation, and that the name of Silicon Graphics not be
 * used in advertising or publicity pertaining to distribution
 * of the software without specific prior written permission.
 * Silicon Graphics makes no representation about the suitability
 * of this software for any purpose. It is provided "as is"
 * without any express or implied warranty.
 *
 * SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
 * GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION  WITH
 * THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "xkb-priv.h"
#include "alloc.h"

int
XkbcCopyKeyType(const struct xkb_key_type *from, struct xkb_key_type *into)
{
    int i;

    if (!from || !into)
        return BadMatch;

    darray_free(into->map);
    free(into->preserve);
    for (i = 0; i < into->num_levels; i++)
        free(into->level_names[i]);
    free(into->level_names);

    *into = *from;

    darray_copy(into->map, from->map);

    if (from->preserve && !darray_empty(into->map)) {
        into->preserve = calloc(darray_size(into->map),
                                sizeof(*into->preserve));
        if (!into->preserve)
            return BadAlloc;
        memcpy(into->preserve, from->preserve,
               darray_size(into->map) * sizeof(*into->preserve));
    }

    if (from->level_names && into->num_levels > 0) {
        into->level_names = calloc(into->num_levels,
                                   sizeof(*into->level_names));
        if (!into->level_names)
            return BadAlloc;

        for (i = 0; i < into->num_levels; i++)
            into->level_names[i] = strdup(from->level_names[i]);
    }

    return Success;
}

union xkb_action *
XkbcResizeKeyActions(struct xkb_keymap *keymap, struct xkb_key *key,
                     uint32_t needed)
{
    size_t old_ndx, old_num_acts, new_ndx;

    if (needed == 0) {
        key->acts_index = 0;
        return NULL;
    }

    if (XkbKeyHasActions(key) && key->width >= needed)
        return XkbKeyActionsPtr(keymap, key);

    /*
     * The key may already be in the array, but without enough space.
     * This should not happen often, so in order to avoid moving and
     * copying stuff from acts and key_acts, we just allocate new
     * space for the key at the end, and leave the old space alone.
     */

    old_ndx = key->acts_index;
    old_num_acts = XkbKeyNumActions(key);
    new_ndx = darray_size(keymap->acts);

    darray_resize0(keymap->acts, new_ndx + needed);
    key->acts_index = new_ndx;

    /*
     * The key was already in the array, copy the old actions to the
     * new space.
     */
    if (old_ndx != 0)
        memcpy(darray_mem(keymap->acts, new_ndx),
               darray_mem(keymap->acts, old_ndx),
               old_num_acts * sizeof(union xkb_action));

    return XkbKeyActionsPtr(keymap, key);
}

static void
free_types(struct xkb_keymap *keymap)
{
    struct xkb_key_type *type;

    darray_foreach(type, keymap->types) {
        int j;
        darray_free(type->map);
        free(type->preserve);
        for (j = 0; j < type->num_levels; j++)
            free(type->level_names[j]);
        free(type->level_names);
        free(type->name);
    }
    darray_free(keymap->types);
}

static void
free_keys(struct xkb_keymap *keymap)
{
    struct xkb_key *key;

    darray_foreach(key, keymap->keys) {
        free(key->sym_index);
        free(key->num_syms);
        darray_free(key->syms);
    }

    darray_free(keymap->keys);
}

static void
free_names(struct xkb_keymap *keymap)
{
    int i;

    for (i = 0; i < XkbNumVirtualMods; i++)
        free(keymap->vmod_names[i]);

    for (i = 0; i < XkbNumIndicators; i++)
        free(keymap->indicator_names[i]);

    for (i = 0; i < XkbNumKbdGroups; i++)
        free(keymap->group_names[i]);

    darray_free(keymap->key_aliases);

    free(keymap->keycodes_section_name);
    free(keymap->symbols_section_name);
    free(keymap->types_section_name);
    free(keymap->compat_section_name);
}

struct xkb_keymap *
XkbcAllocKeyboard(struct xkb_context *ctx)
{
    struct xkb_keymap *keymap;

    keymap = uTypedCalloc(1, struct xkb_keymap);
    if (!keymap)
        return NULL;

    keymap->refcnt = 1;
    keymap->ctx = xkb_context_ref(ctx);

    return keymap;
}

void
XkbcFreeKeyboard(struct xkb_keymap *keymap)
{
    if (!keymap)
        return;

    free_types(keymap);
    darray_free(keymap->acts);
    darray_free(keymap->sym_interpret);
    free_names(keymap);
    free_keys(keymap);
    xkb_context_unref(keymap->ctx);
    free(keymap);
}
kc3-lang/libxkbcommon/src/alloc.c

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kc3-lang/libxkbcommon /src/alloc.c
