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>
35 #include "blobmsg_json.h"
37 #define MAX_VARLEN 256
39 static struct avl_tree env_vars
;
40 static struct blob_buf b
= { 0 };
42 static const char *var_prefix
= "";
43 static int var_prefix_len
= 0;
45 static int add_json_element(const char *key
, json_object
*obj
);
52 static int add_json_object(json_object
*obj
)
56 json_object_object_foreach(obj
, key
, val
) {
57 ret
= add_json_element(key
, val
);
64 static int add_json_array(struct array_list
*a
)
70 for (i
= 0, len
= array_list_length(a
); i
< len
; i
++) {
71 sprintf(seq
, "%d", i
);
72 ret
= add_json_element(seq
, array_list_get_idx(a
, i
));
80 static void add_json_string(const char *str
)
82 char *ptr
= (char *) str
;
86 while ((c
= strchr(ptr
, '\'')) != NULL
) {
89 fwrite(ptr
, len
, 1, stdout
);
92 fwrite(c
, strlen(c
), 1, stdout
);
96 fwrite(ptr
, len
, 1, stdout
);
99 static void write_key_string(const char *key
)
102 putc(isalnum(*key
) ? *key
: '_', stdout
);
107 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
:
137 fprintf(stdout
, "json_add_%s '", type
);
138 write_key_string(key
);
140 switch (json_object_get_type(obj
)) {
141 case json_type_object
:
142 fprintf(stdout
, "';\n");
143 add_json_object(obj
);
144 fprintf(stdout
, "json_close_object;\n");
146 case json_type_array
:
147 fprintf(stdout
, "';\n");
148 add_json_array(json_object_get_array(obj
));
149 fprintf(stdout
, "json_close_array;\n");
151 case json_type_string
:
152 fprintf(stdout
, "' '");
153 add_json_string(json_object_get_string(obj
));
154 fprintf(stdout
, "';\n");
156 case json_type_boolean
:
157 fprintf(stdout
, "' %d;\n", json_object_get_boolean(obj
));
160 fprintf(stdout
, "' %"PRId64
";\n", json_object_get_int64(obj
));
162 case json_type_double
:
163 fprintf(stdout
, "' %lf;\n", json_object_get_double(obj
));
166 fprintf(stdout
, "';\n");
175 static int jshn_parse(const char *str
)
179 obj
= json_tokener_parse(str
);
180 if (!obj
|| json_object_get_type(obj
) != json_type_object
) {
181 fprintf(stderr
, "Failed to parse message data\n");
184 fprintf(stdout
, "json_init;\n");
185 add_json_object(obj
);
191 static char *getenv_avl(const char *key
)
193 struct env_var
*var
= avl_find_element(&env_vars
, key
, var
, avl
);
194 return var
? var
->val
: NULL
;
197 static char *get_keys(const char *prefix
)
201 keys
= alloca(var_prefix_len
+ strlen(prefix
) + sizeof("K_") + 1);
202 sprintf(keys
, "%sK_%s", var_prefix
, prefix
);
203 return getenv_avl(keys
);
206 static void get_var(const char *prefix
, const char **name
, char **var
, char **type
)
208 char *tmpname
, *varname
;
210 tmpname
= alloca(var_prefix_len
+ strlen(prefix
) + 1 + strlen(*name
) + 1 + sizeof("T_"));
212 sprintf(tmpname
, "%s%s_%s", var_prefix
, prefix
, *name
);
213 *var
= getenv_avl(tmpname
);
215 sprintf(tmpname
, "%sT_%s_%s", var_prefix
, prefix
, *name
);
216 *type
= getenv_avl(tmpname
);
218 sprintf(tmpname
, "%sN_%s_%s", var_prefix
, prefix
, *name
);
219 varname
= getenv_avl(tmpname
);
224 static json_object
*jshn_add_objects(json_object
*obj
, const char *prefix
, bool array
);
226 static void jshn_add_object_var(json_object
*obj
, bool array
, const char *prefix
, const char *name
)
231 get_var(prefix
, &name
, &var
, &type
);
235 if (!strcmp(type
, "array")) {
236 new = json_object_new_array();
237 jshn_add_objects(new, var
, true);
238 } else if (!strcmp(type
, "object")) {
239 new = json_object_new_object();
240 jshn_add_objects(new, var
, false);
241 } else if (!strcmp(type
, "string")) {
242 new = json_object_new_string(var
);
243 } else if (!strcmp(type
, "int")) {
244 new = json_object_new_int64(atoll(var
));
245 } else if (!strcmp(type
, "double")) {
246 new = json_object_new_double(strtod(var
, NULL
));
247 } else if (!strcmp(type
, "boolean")) {
248 new = json_object_new_boolean(!!atoi(var
));
249 } else if (!strcmp(type
, "null")) {
256 json_object_array_add(obj
, new);
258 json_object_object_add(obj
, name
, new);
261 static json_object
*jshn_add_objects(json_object
*obj
, const char *prefix
, bool array
)
263 char *keys
, *key
, *brk
;
265 keys
= get_keys(prefix
);
269 for (key
= strtok_r(keys
, " ", &brk
); key
;
270 key
= strtok_r(NULL
, " ", &brk
)) {
271 jshn_add_object_var(obj
, array
, prefix
, key
);
278 static int jshn_format(bool no_newline
, bool indent
, FILE *stream
)
282 char *blobmsg_output
= NULL
;
285 if (!(obj
= json_object_new_object()))
288 jshn_add_objects(obj
, "J_V", false);
289 if (!(output
= json_object_to_json_string(obj
)))
293 blob_buf_init(&b
, 0);
294 if (!blobmsg_add_json_from_string(&b
, output
))
296 if (!(blobmsg_output
= blobmsg_format_json_indent(b
.head
, 1, 0)))
298 output
= blobmsg_output
;
300 fprintf(stream
, "%s%s", output
, no_newline
? "" : "\n");
301 free(blobmsg_output
);
305 json_object_put(obj
);
309 static int usage(const char *progname
)
311 fprintf(stderr
, "Usage: %s [-n] [-i] -r <message>|-R <file>|-w\n", progname
);
315 static int avl_strcmp_var(const void *k1
, const void *k2
, void *ptr
)
321 while (*s1
&& *s1
== *s2
) {
336 int main(int argc
, char **argv
)
338 extern char **environ
;
339 bool no_newline
= false;
341 struct env_var
*vars
;
350 avl_init(&env_vars
, avl_strcmp_var
, false, NULL
);
351 for (i
= 0; environ
[i
]; i
++);
353 vars
= calloc(i
, sizeof(*vars
));
355 fprintf(stderr
, "%m\n");
358 for (i
= 0; environ
[i
]; i
++) {
361 vars
[i
].avl
.key
= environ
[i
];
362 c
= strchr(environ
[i
], '=');
367 avl_insert(&env_vars
, &vars
[i
].avl
);
370 while ((ch
= getopt(argc
, argv
, "p:nir:R:o:w")) != -1) {
374 var_prefix_len
= strlen(var_prefix
);
377 return jshn_parse(optarg
);
379 if ((fd
= open(optarg
, O_RDONLY
)) == -1) {
380 fprintf(stderr
, "Error opening %s\n", optarg
);
383 if (fstat(fd
, &sb
) == -1) {
384 fprintf(stderr
, "Error getting size of %s\n", optarg
);
388 if (!(fbuf
= malloc(sb
.st_size
))) {
389 fprintf(stderr
, "Error allocating memory for %s\n", optarg
);
393 if (read(fd
, fbuf
, sb
.st_size
) != sb
.st_size
) {
394 fprintf(stderr
, "Error reading %s\n", optarg
);
399 ret
= jshn_parse(fbuf
);
404 return jshn_format(no_newline
, indent
, stdout
);
406 fp
= fopen(optarg
, "w");
408 fprintf(stderr
, "Error opening %s\n", optarg
);
411 jshn_format(no_newline
, indent
, fp
);
421 return usage(argv
[0]);
424 return usage(argv
[0]);