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/*
* BIRD -- Set/Community-list Operations
*
* (c) 2000 Martin Mares <mj@ucw.cz>
* (c) 2000 Pavel Machek <pavel@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include "nest/bird.h"
#include "nest/route.h"
#include "nest/attrs.h"
#include "lib/resource.h"
#include "lib/string.h"
void
int_set_format(struct adata *set, int way, byte *buf, unsigned int size)
{
u32 *z = (u32 *) set->data;
int l = set->length / 4;
int sp = 1;
byte *end = buf + size - 16;
while (l--)
{
if (!sp)
*buf++ = ' ';
if (buf > end)
{
strcpy(buf, "...");
return;
}
if (way)
buf += bsprintf(buf, "(%d,%d)", *z >> 16, *z & 0xffff);
else
buf += bsprintf(buf, "%d.%d.%d.%d",
(*z >> 24) & 0xff, (*z >> 16) & 0xff,
(*z >> 8) & 0xff, *z & 0xff);
z++;
sp = 0;
}
*buf = 0;
}
struct adata *
int_set_add(struct linpool *pool, struct adata *list, u32 val)
{
int len = list ? list->length : 0;
struct adata *res = lp_alloc(pool, len + sizeof(struct adata) + 4);
res->length = len + 4;
* (u32 *) res->data = val;
if (list)
memcpy((char *) res->data + 4, list->data, list->length);
return res;
}
int
int_set_contains(struct adata *list, u32 val)
{
u32 *l = (u32 *) list->data;
unsigned int i;
for (i=0; i<list->length/4; i++)
if (*l++ == val)
return 1;
return 0;
}
struct adata *
int_set_del(struct linpool *pool, struct adata *list, u32 val)
{
struct adata *res;
u32 *l, *k;
unsigned int i;
if (!int_set_contains(list, val))
return list;
res = lp_alloc(pool, list->length + sizeof(struct adata) - 4);
res->length = list->length-4;
l = (u32 *) list->data;
k = (u32 *) res->data;
for (i=0; i<list->length/4; i++)
if (l[i] != val)
*k++ = l[i];
return res;
}
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