ossp-pkg/xds/regression-tests/xds-getbuffer.c
/*
XDS - OSSP Extensible Data Serialization Library
Copyright (c) 2001 The OSSP Project (http://www.ossp.org/)
Copyright (c) 2001 Cable & Wireless Deutschland (http://www.cw.com/de/)
This file is part of OSSP XDS, an extensible data serialization
library which can be found at http://www.ossp.com/pkg/xds/.
Permission to use, copy, modify, and distribute this software for
any purpose with or without fee is hereby granted, provided that
the above copyright notice and this permission notice appear in all
copies.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
#include <stdio.h>
#include <string.h>
#include "../internal.h"
static int dummy_engine(xds_t* xds, void* engine_context,
void* buffer, size_t buffer_size, size_t* used_buffer_size,
va_list* args)
{
if (buffer_size < 6)
return XDS_ERR_OVERFLOW;
else
*used_buffer_size = 6;
memmove(buffer, "Hallo!", 6);
return XDS_OK;
}
int main()
{
xds_t* xds;
char* old;
size_t old_len;
char* new;
size_t new_len;
/* Create XDS context. */
xds = xds_init(XDS_ENCODE);
if (xds == NULL)
{
printf("Failed to initialize XDS context.\n");
return 1;
}
/* Register the dummy callback under multiple names. */
if (xds_register(xds, "text", &dummy_engine, (void*)42) != XDS_OK)
{
printf("Failed to register my encoding engine.\n");
return 1;
}
/* Encode something, then flush the buffer by calling
xds_getbuffer(), then encode something new and verify that the
old buffer hasn't ben overwritten and that the new one contains
the correct string. */
if (xds_encode(xds, "text text") != XDS_OK)
{
printf("xds_encode() failed!\n");
return 1;
}
if (xds_getbuffer(xds, XDS_GIFT, (void**)&old, &old_len) != XDS_OK)
{
printf("xds_getbuffer() failed for the first buffer!\n");
return 1;
}
if (xds_encode(xds, "text") != XDS_OK)
{
printf("xds_encode() failed!\n");
return 1;
}
if (xds_getbuffer(xds, XDS_GIFT, (void**)&new, &new_len) != XDS_OK)
{
printf("xds_getbuffer() failed for the second buffer!\n");
return 1;
}
if ((memcmp(old, "Hallo!Hallo!", 12) != 0 || old_len != 12) &&
(memcmp(new, "Hallo!", 6) != 0 || new_len != 6))
{
printf("xds_encode() did not yield the expected result.\n");
return 1;
}
free(old);
free(new);
/* Encode somthing, then get the buffer via XDS_LOAN and verify
the contents. Encode something new and compare the new content
with what we expect. */
if (xds_encode(xds, "text text") != XDS_OK)
{
printf("xds_encode() failed!\n");
return 1;
}
if (xds_getbuffer(xds, XDS_LOAN, (void**)&old, &old_len) != XDS_OK)
{
printf("xds_getbuffer() failed for the first buffer!\n");
return 1;
}
if (memcmp(old, "Hallo!Hallo!", 12) != 0 || old_len != 12)
{
printf("xds_encode() did not yield the expected result.\n");
return 1;
}
if (xds_encode(xds, "text") != XDS_OK)
{
printf("xds_encode() failed!\n");
return 1;
}
if (xds_getbuffer(xds, XDS_LOAN, (void**)&new, &new_len) != XDS_OK)
{
printf("xds_getbuffer() failed for the second buffer!\n");
return 1;
}
if (old != new)
{
printf("xds_encode() allocated a new buffer even though we used XDS_LOAN.\n");
return 1;
}
if (memcmp(new, "Hallo!", 6) != 0 || new_len != 6)
{
printf("xds_encode() did not yield the expected result.\n");
return 1;
}
/* Clean up. */
xds_destroy(xds);
/* Everything went fine. */
return 0;
}
