lib/smap.h

   1 /* Copyright (c) 2012 Nicira, Inc.
   2  *
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.  */
  14
  15 #ifndef SMAP_H
  16 #define SMAP_H 1
  17
  18 #include "hmap.h"
  19
  20 struct json;
  21
  22 /* A map from string to string. */
  23 struct smap {
  24     struct hmap map;           /* Contains "struct smap_node"s. */
  25 };
  26
  27 struct smap_node {
  28     struct hmap_node node;     /* In struct smap's 'map' hmap. */
  29     char *key;
  30     char *value;
  31 };
  32
  33 #define SMAP_INITIALIZER(SMAP) { HMAP_INITIALIZER(&(SMAP)->map) }
  34
  35 #define SMAP_FOR_EACH(SMAP_NODE, SMAP) \
  36     HMAP_FOR_EACH (SMAP_NODE, node, &(SMAP)->map)
  37
  38 #define SMAP_FOR_EACH_SAFE(SMAP_NODE, NEXT, SMAP) \
  39     HMAP_FOR_EACH_SAFE (SMAP_NODE, NEXT, node, &(SMAP)->map)
  40
  41 void smap_init(struct smap *);
  42 void smap_destroy(struct smap *);
  43
  44 struct smap_node *smap_add(struct smap *, const char *, const char *);
  45 bool smap_add_once(struct smap *, const char *, const char *);
  46 void smap_add_format(struct smap *, const char *key, const char *, ...)
  47     PRINTF_FORMAT(3, 4);
  48 void smap_replace(struct smap *, const char *, const char *);
  49
  50 void smap_remove(struct smap *, const char *);
  51 void smap_remove_node(struct smap *, struct smap_node *);
  52 void smap_steal(struct smap *, struct smap_node *, char **keyp, char **valuep);
  53 void smap_clear(struct smap *);
  54
  55 const char *smap_get(const struct smap *, const char *);
  56 struct smap_node *smap_get_node(const struct smap *, const char *);
  57 bool smap_get_bool(const struct smap *smap, const char *key, bool def);
  58 int smap_get_int(const struct smap *smap, const char *key, int def);
  59
  60 bool smap_is_empty(const struct smap *);
  61 size_t smap_count(const struct smap *);
  62
  63 void smap_clone(struct smap *dst, const struct smap *src);
  64 const struct smap_node **smap_sort(const struct smap *);
  65
  66 void smap_from_json(struct smap *, const struct json *);
  67 struct json *smap_to_json(const struct smap *);
  68
  69 #endif /* smap.h */