mirror of
https://github.com/openbsd/src.git
synced 2025-01-03 06:45:37 -08:00
107 lines
2.7 KiB
C
107 lines
2.7 KiB
C
/* $OpenBSD: dict.c,v 1.2 2014/04/28 13:08:34 syl Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2012 Gilles Chehade <gilles@poolp.org>
|
|
* Copyright (c) 2012 Eric Faurot <eric@openbsd.org>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include <err.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "fuse_private.h"
|
|
|
|
#define MAX_DICTKEY_SIZE NAME_MAX
|
|
struct dictentry {
|
|
SPLAY_ENTRY(dictentry) entry;
|
|
char key[MAX_DICTKEY_SIZE + 1];
|
|
void *data;
|
|
};
|
|
|
|
static int dictentry_cmp(struct dictentry *, struct dictentry *);
|
|
|
|
SPLAY_PROTOTYPE(dict, dictentry, entry, dictentry_cmp);
|
|
|
|
int
|
|
dict_check(struct dict *d, const char *k)
|
|
{
|
|
struct dictentry key;
|
|
|
|
if (strlcpy(key.key, k, sizeof key.key) >= sizeof key.key)
|
|
errx(1, "dict_check(%p, %s): key too large", d, k);
|
|
|
|
return (SPLAY_FIND(dict, d, &key) != NULL);
|
|
}
|
|
|
|
void *
|
|
dict_set(struct dict *d, const char *k, void *data)
|
|
{
|
|
struct dictentry *entry, key;
|
|
|
|
if (strlcpy(key.key, k, sizeof key.key) >= sizeof key.key)
|
|
errx(1, "dict_set(%p, %s): key too large", d, k);
|
|
if ((entry = SPLAY_FIND(dict, d, &key)) == NULL) {
|
|
entry = malloc(sizeof *entry);
|
|
if (entry == NULL)
|
|
return (NULL);
|
|
|
|
strlcpy(entry->key, k, sizeof entry->key);
|
|
SPLAY_INSERT(dict, d, entry);
|
|
}
|
|
|
|
entry->data = data;
|
|
|
|
return (entry);
|
|
}
|
|
|
|
void *
|
|
dict_get(struct dict *d, const char *k)
|
|
{
|
|
struct dictentry key, *entry;
|
|
|
|
if (strlcpy(key.key, k, sizeof key.key) >= sizeof key.key)
|
|
errx(1, "dict_get(%p, %s): key too large", d, k);
|
|
if ((entry = SPLAY_FIND(dict, d, &key)) == NULL)
|
|
return (NULL);
|
|
|
|
return (entry->data);
|
|
}
|
|
|
|
void *
|
|
dict_pop(struct dict *d, const char *k)
|
|
{
|
|
struct dictentry key, *entry;
|
|
void *data;
|
|
|
|
if (strlcpy(key.key, k, sizeof key.key) >= sizeof key.key)
|
|
errx(1, "dict_pop(%p, %s): key too large", d, k);
|
|
if ((entry = SPLAY_FIND(dict, d, &key)) == NULL)
|
|
return (NULL);
|
|
|
|
data = entry->data;
|
|
SPLAY_REMOVE(dict, d, entry);
|
|
free(entry);
|
|
|
|
return (data);
|
|
}
|
|
|
|
static int
|
|
dictentry_cmp(struct dictentry *a, struct dictentry *b)
|
|
{
|
|
return strcmp(a->key, b->key);
|
|
}
|
|
|
|
SPLAY_GENERATE(dict, dictentry, entry, dictentry_cmp);
|