2 * Copyright (C) 2011-2013 Felix Fietkau <nbd@openwrt.org>
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 #include <json/json.h>
32 #include "blobmsg_json.h"
34 #define MAX_VARLEN 256
36 static struct avl_tree env_vars
;
37 static struct blob_buf b
= { 0 };
39 static const char *var_prefix
= "";
40 static int var_prefix_len
= 0;
42 static int add_json_element(const char *key
, json_object
*obj
);
49 static int add_json_object(json_object
*obj
)
53 json_object_object_foreach(obj
, key
, val
) {
54 ret
= add_json_element(key
, val
);
61 static int add_json_array(struct array_list
*a
)
67 for (i
= 0, len
= array_list_length(a
); i
< len
; i
++) {
68 sprintf(seq
, "%d", i
);
69 ret
= add_json_element(seq
, array_list_get_idx(a
, i
));
77 static void add_json_string(const char *str
)
79 char *ptr
= (char *) str
;
83 while ((c
= strchr(ptr
, '\'')) != NULL
) {
86 fwrite(ptr
, len
, 1, stdout
);
89 fwrite(c
, strlen(c
), 1, stdout
);
93 fwrite(ptr
, len
, 1, stdout
);
96 static void write_key_string(const char *key
)
99 putc(isalnum(*key
) ? *key
: '_', stdout
);
104 static int add_json_element(const char *key
, json_object
*obj
)
111 switch (json_object_get_type(obj
)) {
112 case json_type_object
:
115 case json_type_array
:
118 case json_type_string
:
121 case json_type_boolean
:
127 case json_type_double
:
134 fprintf(stdout
, "json_add_%s '", type
);
135 write_key_string(key
);
137 switch (json_object_get_type(obj
)) {
138 case json_type_object
:
139 fprintf(stdout
, "';\n");
140 add_json_object(obj
);
141 fprintf(stdout
, "json_close_object;\n");
143 case json_type_array
:
144 fprintf(stdout
, "';\n");
145 add_json_array(json_object_get_array(obj
));
146 fprintf(stdout
, "json_close_array;\n");
148 case json_type_string
:
149 fprintf(stdout
, "' '");
150 add_json_string(json_object_get_string(obj
));
151 fprintf(stdout
, "';\n");
153 case json_type_boolean
:
154 fprintf(stdout
, "' %d;\n", json_object_get_boolean(obj
));
157 fprintf(stdout
, "' %d;\n", json_object_get_int(obj
));
159 case json_type_double
:
160 fprintf(stdout
, "' %lf;\n", json_object_get_double(obj
));
169 static int jshn_parse(const char *str
)
173 obj
= json_tokener_parse(str
);
174 if (!obj
|| json_object_get_type(obj
) != json_type_object
) {
175 fprintf(stderr
, "Failed to parse message data\n");
178 fprintf(stdout
, "json_init;\n");
179 add_json_object(obj
);
185 static char *getenv_avl(const char *key
)
187 struct env_var
*var
= avl_find_element(&env_vars
, key
, var
, avl
);
188 return var
? var
->val
: NULL
;
191 static char *get_keys(const char *prefix
)
195 keys
= alloca(var_prefix_len
+ strlen(prefix
) + sizeof("K_") + 1);
196 sprintf(keys
, "%sK_%s", var_prefix
, prefix
);
197 return getenv_avl(keys
);
200 static void get_var(const char *prefix
, const char **name
, char **var
, char **type
)
202 char *tmpname
, *varname
;
204 tmpname
= alloca(var_prefix_len
+ strlen(prefix
) + 1 + strlen(*name
) + 1 + sizeof("T_"));
206 sprintf(tmpname
, "%s%s_%s", var_prefix
, prefix
, *name
);
207 *var
= getenv_avl(tmpname
);
209 sprintf(tmpname
, "%sT_%s_%s", var_prefix
, prefix
, *name
);
210 *type
= getenv_avl(tmpname
);
212 sprintf(tmpname
, "%sN_%s_%s", var_prefix
, prefix
, *name
);
213 varname
= getenv_avl(tmpname
);
218 static json_object
*jshn_add_objects(json_object
*obj
, const char *prefix
, bool array
);
220 static void jshn_add_object_var(json_object
*obj
, bool array
, const char *prefix
, const char *name
)
225 get_var(prefix
, &name
, &var
, &type
);
229 if (!strcmp(type
, "array")) {
230 new = json_object_new_array();
231 jshn_add_objects(new, var
, true);
232 } else if (!strcmp(type
, "object")) {
233 new = json_object_new_object();
234 jshn_add_objects(new, var
, false);
235 } else if (!strcmp(type
, "string")) {
236 new = json_object_new_string(var
);
237 } else if (!strcmp(type
, "int")) {
238 new = json_object_new_int(atoi(var
));
239 } else if (!strcmp(type
, "double")) {
240 new = json_object_new_double(strtod(var
, NULL
));
241 } else if (!strcmp(type
, "boolean")) {
242 new = json_object_new_boolean(!!atoi(var
));
248 json_object_array_add(obj
, new);
250 json_object_object_add(obj
, name
, new);
253 static json_object
*jshn_add_objects(json_object
*obj
, const char *prefix
, bool array
)
255 char *keys
, *key
, *brk
;
257 keys
= get_keys(prefix
);
261 for (key
= strtok_r(keys
, " ", &brk
); key
;
262 key
= strtok_r(NULL
, " ", &brk
)) {
263 jshn_add_object_var(obj
, array
, prefix
, key
);
270 static int jshn_format(bool no_newline
, bool indent
)
274 char *blobmsg_output
= NULL
;
277 if (!(obj
= json_object_new_object()))
280 jshn_add_objects(obj
, "J_V", false);
281 if (!(output
= json_object_to_json_string(obj
)))
285 blob_buf_init(&b
, 0);
286 if (!blobmsg_add_json_from_string(&b
, output
))
288 if (!(blobmsg_output
= blobmsg_format_json_indent(b
.head
, 1, 0)))
290 output
= blobmsg_output
;
292 fprintf(stdout
, "%s%s", output
, no_newline
? "" : "\n");
293 free(blobmsg_output
);
297 json_object_put(obj
);
301 static int usage(const char *progname
)
303 fprintf(stderr
, "Usage: %s [-n] [-i] -r <message>|-w\n", progname
);
307 static int avl_strcmp_var(const void *k1
, const void *k2
, void *ptr
)
313 while (*s1
&& *s1
== *s2
) {
328 int main(int argc
, char **argv
)
330 extern char **environ
;
331 bool no_newline
= false;
333 struct env_var
*vars
;
337 avl_init(&env_vars
, avl_strcmp_var
, false, NULL
);
338 for (i
= 0; environ
[i
]; i
++);
340 vars
= calloc(i
, sizeof(*vars
));
342 fprintf(stderr
, "%m\n");
345 for (i
= 0; environ
[i
]; i
++) {
348 vars
[i
].avl
.key
= environ
[i
];
349 c
= strchr(environ
[i
], '=');
354 avl_insert(&env_vars
, &vars
[i
].avl
);
357 while ((ch
= getopt(argc
, argv
, "p:nir:w")) != -1) {
361 var_prefix_len
= strlen(var_prefix
);
364 return jshn_parse(optarg
);
366 return jshn_format(no_newline
, indent
);
374 return usage(argv
[0]);
377 return usage(argv
[0]);