hash.c
3.48 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
#include <string.h>
#include <stdlib.h>
#include <json/json.h>
#include "cclass.h"
#include "dyntype.h"
#include "dyntype/hash.h"
#define HASH_ENTRY_CHUNK_SIZE 128
static void _updateHashSize(struct DYNTYPE_HASH * _this);
static
void
__construct(struct DYNTYPE_HASH * _this, va_list * params)
{
_this->size = 0;
_this->used = 0;
_updateHashSize(_this);
}
static
void
__jsonConst(struct DYNTYPE_HASH * _this, struct json_object * json)
{
__construct(_this, NULL);
if (json_type_object != json_object_get_type(json)) {
return;
}
json_object_object_foreach(json, key, value) {
dyntype_hash_set(_this, key, newFromJson(DYNTYPE, value));
}
}
static
void
__destruct(struct DYNTYPE_HASH * _this)
{
size_t index;
for (index = 0; index < _this->used; index ++) {
free(_this->keys[index]);
}
free(_this->keys);
free(_this->values);
}
static
struct json_object *
__toJson(struct DYNTYPE_HASH * _this)
{
size_t index;
struct json_object * json = json_object_new_object();
for (index = 0; index < _this->used; index ++) {
json_object_object_add(
json,
_this->keys[index],
toJson(_this->values[index]));
}
return json;
}
static const
struct CCLASS _dyntype_hash = {
sizeof(struct DYNTYPE_HASH),
(ctor)__construct,
(jCtor)__jsonConst,
(dtor)__destruct,
(jTo)__toJson
};
const struct CCLASS * const DYNTYPE_HASH = &_dyntype_hash;
static
void
_updateHashSize(struct DYNTYPE_HASH * _this)
{
if (_this->used == _this->size) {
_this->size += HASH_ENTRY_CHUNK_SIZE;
_this->keys = realloc(_this->keys, sizeof(char*) * _this->size);
memset(_this->keys + (_this->used * sizeof(char*)),
0,
HASH_ENTRY_CHUNK_SIZE * sizeof(char*));
_this->values = realloc(
_this->values,
sizeof(struct DYNTYPE *) * _this->size);
memset(_this->values + (_this->used * sizeof(struct DYNTYPE *)),
0,
HASH_ENTRY_CHUNK_SIZE * sizeof(struct DYNTYPE *));
}
}
static
size_t
_getHashIdx(struct DYNTYPE_HASH * _this, const char * key)
{
size_t index;
for (index = 0;
index < _this->used && strcmp(_this->keys[index], key);
index++);
return index;
}
void
dyntype_hash_set(struct DYNTYPE_HASH * _this,
const char * key,
struct DYNTYPE * value)
{
size_t index = _getHashIdx(_this, key);
_this->keys[index] = calloc(strlen(key) + 1, sizeof(char));
memcpy(_this->keys[index], key, strlen(key));
_this->values[index] = value;
if (index == _this->used) {
_this->used += 1;
}
_updateHashSize(_this);
}
struct DYNTYPE *
dyntype_hash_get(struct DYNTYPE_HASH * _this, const char * key)
{
size_t index = _getHashIdx(_this, key);
if (index == _this->used) {
return NULL;
}
return _this->values[index];
}
struct DYNTYPE *
dyntype_hash_del(struct DYNTYPE_HASH * _this, const char * key)
{
struct DYNTYPE * found = NULL;
size_t index = _getHashIdx(_this, key);
if (index == _this->used) {
return NULL;
}
free(_this->keys[index]);
memmove(_this->keys + index + 1,
_this->keys + index,
(_this->size - index) * sizeof(char*));
memmove(_this->values + index + 1,
_this->values + index,
(_this->size - index) * sizeof(struct DYNTYPE *));
_this->used -= 1;
}
// vim: set et ts=4 sw=4: