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/*
* data - A plugin for data objects for the opensync framework
* Copyright (C) 2004-2005 Armin Bauer <armin.bauer@opensync.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <opensync/opensync.h>
#include <string.h>
#include <stdlib.h>
#include <glib.h>
/** @defgroup data_plain data/plain format
*
* Definition: pointer to a malloc()ed block of data, or a NULL
* pointer.
*/
/** data/plain comparison function
*
* The comparison function is a memcpy() on the data.
*
* @ingroup data_plain
*/
static OSyncConvCmpResult compare_plain(OSyncChange *a, OSyncChange *b)
{
const char *d1 = osync_change_get_data(a);
const char *d2 = osync_change_get_data(b);
size_t s1 = osync_change_get_datasize(a);
size_t s2 = osync_change_get_datasize(b);
/* Consider empty block equal NULL pointers */
if (!s1) d1 = NULL;
if (!s2) d2 = NULL;
if (d1 && d2) {
int r = memcmp(d1, d2, s1 < s2 ? s1 : s2);
if (!r && s1 == s2)
return CONV_DATA_SAME;
else
return CONV_DATA_MISMATCH;
} else if (!d1 && !d2)
return CONV_DATA_SAME;
else
return CONV_DATA_MISMATCH;
}
static osync_bool copy_plain(const char *input, int inpsize, char **output, int *outpsize)
{
char *r = g_malloc0(inpsize);
memcpy(r, input, inpsize);
*output = r;
*outpsize = inpsize;
return TRUE;
}
void get_info(OSyncEnv *env)
{
osync_env_register_objtype(env, "data");
osync_env_register_objformat(env, "data", "plain");
osync_env_format_set_compare_func(env, "plain", compare_plain);
osync_env_format_set_copy_func(env, "plain", copy_plain);
}
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