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/*
* Copyright (C) 2001 Sistina Software (UK) Limited.
*
* This file is released under the LGPL.
*/
#include "filter-composite.h"
#include "dbg_malloc.h"
#include "log.h"
#include <stdarg.h>
static int _and_p(struct dev_filter *f, struct device *dev)
{
struct dev_filter **filters = (struct dev_filter **) f->private;
while (*filters) {
if (!(*filters)->passes_filter(*filters, dev))
return 0;
filters++;
}
return 1;
}
static void _destroy(struct dev_filter *f)
{
struct dev_filter **filters = (struct dev_filter **) f->private;
while (*filters) {
(*filters)->destroy(*filters);
filters++;
}
dbg_free(f->private);
dbg_free(f);
}
struct dev_filter *composite_filter_create(int n, ...)
{
struct dev_filter **filters = dbg_malloc(sizeof(*filters) * (n + 1));
struct dev_filter *cf;
va_list ap;
int i;
if (!filters) {
stack;
return NULL;
}
if (!(cf = dbg_malloc(sizeof(*cf)))) {
stack;
dbg_free(filters);
return NULL;
}
va_start(ap, n);
for (i = 0; i < n; i++) {
struct dev_filter *f = va_arg(ap, struct dev_filter *);
filters[i] = f;
}
filters[i] = NULL;
va_end(ap);
cf->passes_filter = _and_p;
cf->destroy = _destroy;
cf->private = filters;
return cf;
}
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