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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
#include <json/json.h>
#include <libubox/list.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <ctype.h>
#include <getopt.h>
#define MAX_VARLEN 256
static int add_json_element(const char *key, json_object *obj);
static int add_json_object(json_object *obj)
{
int ret = 0;
json_object_object_foreach(obj, key, val) {
ret = add_json_element(key, val);
if (ret)
break;
}
return ret;
}
static int add_json_array(struct array_list *a)
{
char seq[12];
int i, len;
int ret;
for (i = 0, len = array_list_length(a); i < len; i++) {
sprintf(seq, "%d", i);
ret = add_json_element(seq, array_list_get_idx(a, i));
if (ret)
return ret;
}
return 0;
}
static void add_json_string(const char *str)
{
char *ptr = (char *) str;
int len;
char *c;
while ((c = strchr(ptr, '\'')) != NULL) {
len = c - ptr;
if (len > 0)
fwrite(ptr, len, 1, stdout);
ptr = c + 1;
c = "'\\''";
fwrite(c, strlen(c), 1, stdout);
}
len = strlen(ptr);
if (len > 0)
fwrite(ptr, len, 1, stdout);
}
static void write_key_string(const char *key)
{
while (*key) {
putc(isalnum(*key) ? *key : '_', stdout);
key++;
}
}
static int add_json_element(const char *key, json_object *obj)
{
char *type;
if (!obj)
return -1;
switch (json_object_get_type(obj)) {
case json_type_object:
type = "object";
break;
case json_type_array:
type = "array";
break;
case json_type_string:
type = "string";
break;
case json_type_boolean:
type = "boolean";
break;
case json_type_int:
type = "int";
break;
default:
return -1;
}
fprintf(stdout, "json_add_%s '", type);
write_key_string(key);
switch (json_object_get_type(obj)) {
case json_type_object:
fprintf(stdout, "';\n");
add_json_object(obj);
fprintf(stdout, "json_close_object;\n");
break;
case json_type_array:
fprintf(stdout, "';\n");
add_json_array(json_object_get_array(obj));
fprintf(stdout, "json_close_array;\n");
break;
case json_type_string:
fprintf(stdout, "' '");
add_json_string(json_object_get_string(obj));
fprintf(stdout, "';\n");
break;
case json_type_boolean:
fprintf(stdout, "' %d;\n", json_object_get_boolean(obj));
break;
case json_type_int:
fprintf(stdout, "' %d;\n", json_object_get_int(obj));
break;
default:
return -1;
}
return 0;
}
static int jshn_parse(const char *str)
{
json_object *obj;
obj = json_tokener_parse(str);
if (is_error(obj) || json_object_get_type(obj) != json_type_object) {
fprintf(stderr, "Failed to parse message data\n");
return 1;
}
fprintf(stdout, "json_init;\n");
add_json_object(obj);
fflush(stdout);
return 0;
}
static char *get_keys(const char *prefix)
{
char *keys;
keys = alloca(strlen(prefix) + sizeof("KEYS_") + 1);
sprintf(keys, "KEYS_%s", prefix);
return getenv(keys);
}
static void get_var(const char *prefix, const char *name, char **var, char **type)
{
char *tmpname;
tmpname = alloca(strlen(prefix) + 1 + strlen(name) + 1 + sizeof("TYPE_"));
sprintf(tmpname, "TYPE_%s_%s", prefix, name);
*var = getenv(tmpname + 5);
*type = getenv(tmpname);
}
static json_object *jshn_add_objects(json_object *obj, const char *prefix, bool array);
static void jshn_add_object_var(json_object *obj, bool array, const char *prefix, const char *name)
{
json_object *new;
char *var, *type;
get_var(prefix, name, &var, &type);
if (!var || !type)
return;
if (!strcmp(type, "array")) {
new = json_object_new_array();
jshn_add_objects(new, var, true);
} else if (!strcmp(type, "object")) {
new = json_object_new_object();
jshn_add_objects(new, var, false);
} else if (!strcmp(type, "string")) {
new = json_object_new_string(var);
} else if (!strcmp(type, "int")) {
new = json_object_new_int(atoi(var));
} else if (!strcmp(type, "boolean")) {
new = json_object_new_boolean(!!atoi(var));
} else {
return;
}
if (array)
json_object_array_add(obj, new);
else
json_object_object_add(obj, name, new);
}
static json_object *jshn_add_objects(json_object *obj, const char *prefix, bool array)
{
char *keys, *key, *brk;
keys = get_keys(prefix);
if (!keys || !obj)
goto out;
for (key = strtok_r(keys, " ", &brk); key;
key = strtok_r(NULL, " ", &brk)) {
jshn_add_object_var(obj, array, prefix, key);
}
out:
return obj;
}
static int jshn_format(void)
{
json_object *obj;
obj = json_object_new_object();
jshn_add_objects(obj, "JSON_VAR", false);
fprintf(stdout, "%s\n", json_object_to_json_string(obj));
json_object_put(obj);
return 0;
}
static int usage(const char *progname)
{
fprintf(stderr, "Usage: %s -r <message>|-w\n", progname);
return 2;
}
int main(int argc, char **argv)
{
int ch;
while ((ch = getopt(argc, argv, "r:w")) != -1) {
switch(ch) {
case 'r':
return jshn_parse(optarg);
case 'w':
return jshn_format();
default:
return usage(argv[0]);
}
}
return usage(argv[0]);
}
|
