int mk_iov_realloc(struct mk_iov *mk_io, int new_size)
{
void **new_buf;
struct iovec *new_io;
new_io = mk_mem_realloc(mk_io->io, sizeof(struct iovec) * new_size) ;
new_buf = mk_mem_realloc(mk_io->buf_to_free, sizeof(void *) * new_size);
if (!new_io || !new_buf) {
MK_TRACE("could not reallocate IOV");
mk_mem_free(new_io);
mk_mem_free(new_buf);
return -1;
}
/* update data */
mk_io->io = new_io;
mk_io->buf_to_free = new_buf;
mk_io->size = new_size;
return 0;
}
/*
* @METHOD_NAME: printf
* @METHOD_DESC: It format and enqueue a buffer of data to be send to the HTTP client as response body.
* The buffer allocated is freed internally when the data is flushed completely.
* @METHOD_PARAM: dr the request context information hold by a duda_request_t type
* @METHOD_PARAM: format Specifies the subsequent arguments to be formatted
* @METHOD_RETURN: Upon successful completion it returns 0, on error returns -1.
*/
int duda_response_printf(duda_request_t *dr, const char *format, ...)
{
int ret;
int n, size = 128;
char *p, *np;
va_list ap;
if ((p = mk_mem_alloc(size)) == NULL) {
return -1;
}
/* Try to print in the allocated space. */
while (1) {
va_start(ap, format);
n = vsnprintf(p, size, format, ap);
/* If that worked, return the string. */
if (n > -1 && n < size)
break;
size *= 2; /* twice the old size */
if ((np = mk_mem_realloc(p, size)) == NULL) {
mk_mem_free(p);
return - 1;
} else {
p = np;
}
}
va_end(ap);
ret = _print(dr, p, n, MK_TRUE);
if (ret == -1) {
mk_mem_free(p);
}
return ret;
}
