3 /* xbt/dict.h -- api to a generic dictionary */
5 /* Copyright (c) 2003, 2004 Martin Quinson. All rights reserved. */
7 /* This program is free software; you can redistribute it and/or modify it
8 * under the terms of the license (GNU LGPL) which comes with this package. */
14 #include "xbt/misc.h" /* SG_BEGIN_DECL */
15 #include "xbt/dynar.h" /* void_f_pvoid_t */
19 /** @addtogroup XBT_dict
20 * @brief The dictionary data structure (comparable to hash tables)
22 * This section describes the API to a dictionary structure that
23 * associates as string to a void* key. It provides the same
24 * functionality than an hash table.
26 * Here is a little example of use:
27 * \verbatim xbt_dict_t mydict = xbt_dict_new();
30 sprintf(buff,"some very precious data");
31 xbt_dict_set(mydict,"my data", strdup(buff), free);
33 sprintf(buff,"another good stuff");
34 xbt_dict_set(mydict,"my data", strdup(buff), free); // previous data gets erased (and freed) by second add
39 /** @defgroup XBT_dict_cons Dict constructor and destructor
45 /** \brief Dictionary data type (opaque structure) */
46 typedef struct xbt_dict_ *xbt_dict_t;
47 XBT_PUBLIC(xbt_dict_t) xbt_dict_new(void);
48 XBT_PUBLIC(void) xbt_dict_free(xbt_dict_t * dict);
49 XBT_PUBLIC(unsigned int) xbt_dict_size(xbt_dict_t dict);
52 /** @defgroup XBT_dict_basic Dictionaries basic usage
55 * Careful, those functions assume that the key is null-terminated.
60 XBT_PUBLIC(void) xbt_dict_set(xbt_dict_t dict, const char *key, void *data,
61 void_f_pvoid_t free_ctn);
62 XBT_PUBLIC(void *) xbt_dict_get(xbt_dict_t dict, const char *key);
63 XBT_PUBLIC(void *) xbt_dict_get_or_null(xbt_dict_t dict, const char *key);
65 XBT_PUBLIC(void) xbt_dict_remove(xbt_dict_t dict, const char *key);
66 XBT_PUBLIC(void) xbt_dict_reset(xbt_dict_t dict);
67 XBT_PUBLIC(int) xbt_dict_length(xbt_dict_t dict);
68 XBT_PUBLIC(void) xbt_dict_dump_output_string(void *s);
69 XBT_PUBLIC(void) xbt_dict_dump(xbt_dict_t dict, void (*output) (void *));
70 XBT_PUBLIC(void) xbt_dict_dump_sizes(xbt_dict_t dict);
74 /** @defgroup XBT_dict_nnul Dictionaries with non-nul terminated keys
77 * Those functions work even with non-null terminated keys.
81 XBT_PUBLIC(void) xbt_dict_set_ext(xbt_dict_t dict,
82 const char *key, int key_len,
83 void *data, void_f_pvoid_t free_ctn);
84 XBT_PUBLIC(void *) xbt_dict_get_ext(xbt_dict_t dict, const char *key,
86 XBT_PUBLIC(void *) xbt_dict_get_or_null_ext(xbt_dict_t dict, const char *key,
88 XBT_PUBLIC(void) xbt_dict_remove_ext(xbt_dict_t dict, const char *key,
93 /** @defgroup XBT_dict_curs Cursors on dictionaries
96 * Don't get impressed, there is a lot of functions here, but traversing a
97 * dictionary is immediate with the xbt_dict_foreach macro.
98 * You only need the other functions in rare cases (they are not used directly in SG itself).
100 * Here is an example (assuming that the dictionary contains strings, ie
101 * that the <tt>data</tt> argument of xbt_dict_set was always a null-terminated char*):
102 \verbatim xbt_dict_cursor_t cursor=NULL;
105 xbt_dict_foreach(dict,cursor,key,data) {
106 printf(" - Seen: %s->%s\n",key,data);
110 * \warning Do not add or remove entries to the cache while traversing !!
114 /** @brief Cursor on dictionaries (opaque type) */
115 typedef struct xbt_dict_cursor_ *xbt_dict_cursor_t;
116 XBT_PUBLIC(xbt_dict_cursor_t) xbt_dict_cursor_new(const xbt_dict_t dict);
117 XBT_PUBLIC(void) xbt_dict_cursor_free(xbt_dict_cursor_t * cursor);
119 XBT_PUBLIC(void) xbt_dict_cursor_rewind(xbt_dict_cursor_t cursor);
122 XBT_PUBLIC(char *) xbt_dict_cursor_get_key(xbt_dict_cursor_t cursor);
123 XBT_PUBLIC(void *) xbt_dict_cursor_get_data(xbt_dict_cursor_t cursor);
125 XBT_PUBLIC(void) xbt_dict_cursor_first(const xbt_dict_t dict,
126 xbt_dict_cursor_t * cursor);
127 XBT_PUBLIC(void) xbt_dict_cursor_step(xbt_dict_cursor_t cursor);
128 XBT_PUBLIC(int) xbt_dict_cursor_get_or_free(xbt_dict_cursor_t * cursor,
129 char **key, void **data);
130 /** @def xbt_dict_foreach
132 # define xbt_dict_foreach(dict,cursor,key,data) \
133 for (cursor=NULL, xbt_dict_cursor_first((dict),&(cursor)) ; \
134 xbt_dict_cursor_get_or_free(&(cursor),&(key),(void**)(&data));\
135 xbt_dict_cursor_step(cursor) )
138 /** @defgroup XBT_dict_multi Multi-level dictionaries
141 * They can be seen as dictionary of multiple keys or as dictionary of
142 * dictionary of ... of data. Most of the functions here work the same way
143 * than their simple dictionary counterpart.
145 * Note that there is no xbt_multidict_free neither xbt_multi_dict_new functions.
146 * Use xbt_dict_free() and xbt_dict_new() instead.
151 /** \brief To dump multicache, this function dumps a cache */
152 XBT_PUBLIC(void) xbt_dict_print(void *data);
153 /** \brief To dump multicache, this one dumps a string */
154 XBT_PUBLIC(void) xbt_dict_prints(void *data);
157 /*----[ xbt_multidict_set ]--------------------------------------------------*/
159 xbt_multidict_set(xbt_dict_t mdict,
160 xbt_dynar_t keys, void *data, void (*free_ctn) (void *));
162 xbt_multidict_set_ext(xbt_dict_t mdict,
163 xbt_dynar_t keys, xbt_dynar_t lens,
164 void *data, void_f_pvoid_t free_ctn);
166 /*----[ xbt_multidict_get ]--------------------------------------------------*/
167 XBT_PUBLIC(void *) xbt_multidict_get(xbt_dict_t mdict, xbt_dynar_t keys);
168 XBT_PUBLIC(void *) xbt_multidict_get_ext(xbt_dict_t mdict, xbt_dynar_t keys,
171 /*----[ xbt_multidict_remove ]-----------------------------------------------*/
172 /*---------------------------------------------------------------------------*/
173 XBT_PUBLIC(void) xbt_multidict_remove(xbt_dict_t mdict, xbt_dynar_t keys);
174 XBT_PUBLIC(void) xbt_multidict_remove_ext(xbt_dict_t mdict, xbt_dynar_t keys,
180 #endif /* _XBT_DICT_H */