git/oidmap.c

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C
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#include "cache.h"
#include "oidmap.h"
static int cmpfn(const void *hashmap_cmp_fn_data,
const void *entry, const void *entry_or_key,
const void *keydata)
{
const struct oidmap_entry *entry_ = entry;
if (keydata)
return oidcmp(&entry_->oid, (const struct object_id *) keydata);
return oidcmp(&entry_->oid,
&((const struct oidmap_entry *) entry_or_key)->oid);
}
static int hash(const struct object_id *oid)
{
int hash;
memcpy(&hash, oid->hash, sizeof(hash));
return hash;
}
void oidmap_init(struct oidmap *map, size_t initial_size)
{
hashmap_init(&map->map, cmpfn, NULL, initial_size);
}
void oidmap_free(struct oidmap *map, int free_entries)
{
if (!map)
return;
hashmap_free(&map->map, free_entries);
}
void *oidmap_get(const struct oidmap *map, const struct object_id *key)
{
if (!map->map.cmpfn)
return NULL;
return hashmap_get_from_hash(&map->map, hash(key), key);
}
void *oidmap_remove(struct oidmap *map, const struct object_id *key)
{
struct hashmap_entry entry;
if (!map->map.cmpfn)
oidmap_init(map, 0);
hashmap_entry_init(&entry, hash(key));
return hashmap_remove(&map->map, &entry, key);
}
void *oidmap_put(struct oidmap *map, void *entry)
{
struct oidmap_entry *to_put = entry;
if (!map->map.cmpfn)
oidmap_init(map, 0);
hashmap_entry_init(&to_put->internal_entry, hash(&to_put->oid));
return hashmap_put(&map->map, to_put);
}