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);