2 * Copyright (C) 2010-2012 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.
18 #include "blobmsg_json.h"
20 bool blobmsg_add_object(struct blob_buf
*b
, json_object
*obj
)
22 json_object_object_foreach(obj
, key
, val
) {
23 if (!blobmsg_add_json_element(b
, key
, val
))
29 static bool blobmsg_add_array(struct blob_buf
*b
, struct array_list
*a
)
33 for (i
= 0, len
= array_list_length(a
); i
< len
; i
++) {
34 if (!blobmsg_add_json_element(b
, NULL
, array_list_get_idx(a
, i
)))
41 bool blobmsg_add_json_element(struct blob_buf
*b
, const char *name
, json_object
*obj
)
49 switch (json_object_get_type(obj
)) {
50 case json_type_object
:
51 c
= blobmsg_open_table(b
, name
);
52 ret
= blobmsg_add_object(b
, obj
);
53 blobmsg_close_table(b
, c
);
56 c
= blobmsg_open_array(b
, name
);
57 ret
= blobmsg_add_array(b
, json_object_get_array(obj
));
58 blobmsg_close_array(b
, c
);
60 case json_type_string
:
61 blobmsg_add_string(b
, name
, json_object_get_string(obj
));
63 case json_type_boolean
:
64 blobmsg_add_u8(b
, name
, json_object_get_boolean(obj
));
67 blobmsg_add_u32(b
, name
, json_object_get_int(obj
));
75 static bool __blobmsg_add_json(struct blob_buf
*b
, json_object
*obj
)
82 if (json_object_get_type(obj
) != json_type_object
)
85 ret
= blobmsg_add_object(b
, obj
);
92 bool blobmsg_add_json_from_file(struct blob_buf
*b
, const char *file
)
94 return __blobmsg_add_json(b
, json_object_from_file(file
));
97 bool blobmsg_add_json_from_string(struct blob_buf
*b
, const char *str
)
99 return __blobmsg_add_json(b
, json_tokener_parse(str
));
108 blobmsg_json_format_t custom_format
;
114 static bool blobmsg_puts(struct strbuf
*s
, const char *c
, int len
)
119 if (s
->pos
+ len
>= s
->len
) {
121 s
->buf
= realloc(s
->buf
, s
->len
);
125 memcpy(s
->buf
+ s
->pos
, c
, len
);
130 static void add_separator(struct strbuf
*s
)
132 static char indent_chars
[17] = "\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
139 indent
= s
->indent_level
;
143 start
= &indent_chars
[sizeof(indent_chars
) - indent
- 1];
145 blobmsg_puts(s
, start
, indent
+ 1);
150 static void blobmsg_format_string(struct strbuf
*s
, const char *str
)
152 const unsigned char *p
, *last
, *end
;
153 char buf
[8] = "\\u00";
155 end
= (unsigned char *) str
+ strlen(str
);
156 blobmsg_puts(s
, "\"", 1);
157 for (p
= (unsigned char *) str
, last
= p
; *p
; p
++) {
189 blobmsg_puts(s
, (char *) last
, p
- last
);
194 sprintf(buf
+ 4, "%02x", (unsigned char) *p
);
199 blobmsg_puts(s
, buf
, len
);
202 blobmsg_puts(s
, (char *) last
, end
- last
);
203 blobmsg_puts(s
, "\"", 1);
206 static void blobmsg_format_json_list(struct strbuf
*s
, struct blob_attr
*attr
, int len
, bool array
);
208 static void blobmsg_format_element(struct strbuf
*s
, struct blob_attr
*attr
, bool array
, bool head
)
210 const char *data_str
;
215 if (!blobmsg_check_attr(attr
, false))
218 if (!array
&& blobmsg_name(attr
)[0]) {
219 blobmsg_format_string(s
, blobmsg_name(attr
));
220 blobmsg_puts(s
, ": ", s
->indent
? 2 : 1);
223 data
= blobmsg_data(attr
);
224 len
= blobmsg_data_len(attr
);
226 if (!head
&& s
->custom_format
) {
227 data_str
= s
->custom_format(s
->priv
, attr
);
233 switch(blob_id(attr
)) {
234 case BLOBMSG_TYPE_UNSPEC
:
235 sprintf(buf
, "null");
237 case BLOBMSG_TYPE_BOOL
:
238 sprintf(buf
, "%s", *(uint8_t *)data
? "true" : "false");
240 case BLOBMSG_TYPE_INT16
:
241 sprintf(buf
, "%d", be16_to_cpu(*(uint16_t *)data
));
243 case BLOBMSG_TYPE_INT32
:
244 sprintf(buf
, "%d", (int32_t) be32_to_cpu(*(uint32_t *)data
));
246 case BLOBMSG_TYPE_INT64
:
247 sprintf(buf
, "%" PRId64
, (int64_t) be64_to_cpu(*(uint64_t *)data
));
249 case BLOBMSG_TYPE_STRING
:
250 blobmsg_format_string(s
, data
);
252 case BLOBMSG_TYPE_ARRAY
:
253 blobmsg_format_json_list(s
, data
, len
, true);
255 case BLOBMSG_TYPE_TABLE
:
256 blobmsg_format_json_list(s
, data
, len
, false);
261 blobmsg_puts(s
, data_str
, strlen(data_str
));
264 static void blobmsg_format_json_list(struct strbuf
*s
, struct blob_attr
*attr
, int len
, bool array
)
266 struct blob_attr
*pos
;
270 blobmsg_puts(s
, (array
? "[" : "{" ), 1);
273 __blob_for_each_attr(pos
, attr
, rem
) {
275 blobmsg_puts(s
, ",", 1);
279 blobmsg_format_element(s
, pos
, array
, false);
284 blobmsg_puts(s
, (array
? "]" : "}"), 1);
287 char *blobmsg_format_json_with_cb(struct blob_attr
*attr
, bool list
, blobmsg_json_format_t cb
, void *priv
, int indent
)
292 s
.len
= blob_len(attr
);
293 s
.buf
= malloc(s
.len
);
295 s
.custom_format
= cb
;
301 s
.indent_level
= indent
;
304 array
= blob_is_extended(attr
) &&
305 blobmsg_type(attr
) == BLOBMSG_TYPE_ARRAY
;
308 blobmsg_format_json_list(&s
, blobmsg_data(attr
), blobmsg_data_len(attr
), array
);
310 blobmsg_format_element(&s
, attr
, false, false);
317 s
.buf
= realloc(s
.buf
, s
.pos
+ 1);