static char* ensure(printbuffer *p, int needed)
{
char *newbuffer;
int newsize;
if(!p || !p->buffer)
return 0;
needed += p->offset;
if(needed <= p->length)
return p->buffer + p->offset;
newsize = pow2gt(needed);
newbuffer = (char*) cJSON_malloc(newsize);
if(!newbuffer)
{
cJSON_free(p->buffer);
p->length = 0, p->buffer = 0;
return 0;
}
if(newbuffer)
memcpy(newbuffer, p->buffer, p->length);
cJSON_free(p->buffer);
p->length = newsize;
p->buffer = newbuffer;
return newbuffer + p->offset;
}
/* realloc printbuffer if necessary to have at least "needed" bytes more */
static char* ensure(printbuffer *p, int needed)
{
char *newbuffer = NULL;
int newsize = 0;
if (!p || !p->buffer)
{
return NULL;
}
needed += p->offset;
if (needed <= p->length)
{
return p->buffer + p->offset;
}
if (p->noalloc) {
return NULL;
}
newsize = pow2gt(needed);
newbuffer = (char*)cJSON_malloc(newsize);
if (!newbuffer)
{
cJSON_free(p->buffer);
p->length = 0;
p->buffer = NULL;
return NULL;
}
if (newbuffer)
{
memcpy(newbuffer, p->buffer, p->length);
}
cJSON_free(p->buffer);
p->length = newsize;
p->buffer = newbuffer;
return newbuffer + p->offset;
}