/*
- * blobmsg - library for generating/parsing structured blob messages
+ * Copyright (C) 2010-2012 Felix Fietkau <nbd@openwrt.org>
*
- * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1
- * as published by the Free Software Foundation
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-
+#include <inttypes.h>
#include "blobmsg.h"
#include "blobmsg_json.h"
-static bool blobmsg_add_object(struct blob_buf *b, json_object *obj)
+#ifdef JSONC
+ #include <json.h>
+#else
+ #include <json/json.h>
+#endif
+
+bool blobmsg_add_object(struct blob_buf *b, json_object *obj)
{
json_object_object_foreach(obj, key, val) {
if (!blobmsg_add_json_element(b, key, val))
bool ret = true;
void *c;
- if (!obj)
- return false;
-
switch (json_object_get_type(obj)) {
case json_type_object:
c = blobmsg_open_table(b, name);
case json_type_int:
blobmsg_add_u32(b, name, json_object_get_int(obj));
break;
+ case json_type_double:
+ blobmsg_add_double(b, name, json_object_get_double(obj));
+ break;
+ case json_type_null:
+ blobmsg_add_field(b, BLOBMSG_TYPE_UNSPEC, name, NULL, 0);
+ break;
default:
return false;
}
return ret;
}
-bool blobmsg_add_json_from_string(struct blob_buf *b, const char *str)
+static bool __blobmsg_add_json(struct blob_buf *b, json_object *obj)
{
- json_object *obj;
bool ret = false;
- obj = json_tokener_parse(str);
- if (is_error(obj))
+ if (!obj)
return false;
if (json_object_get_type(obj) != json_type_object)
return ret;
}
+bool blobmsg_add_json_from_file(struct blob_buf *b, const char *file)
+{
+ return __blobmsg_add_json(b, json_object_from_file(file));
+}
+
+bool blobmsg_add_json_from_string(struct blob_buf *b, const char *str)
+{
+ return __blobmsg_add_json(b, json_tokener_parse(str));
+}
+
+
+struct strbuf {
+ int len;
+ int pos;
+ char *buf;
+
+ blobmsg_json_format_t custom_format;
+ void *priv;
+ bool indent;
+ int indent_level;
+};
+
+static bool blobmsg_puts(struct strbuf *s, const char *c, int len)
+{
+ size_t new_len;
+ char *new_buf;
+
+ if (len <= 0)
+ return true;
+
+ if (s->pos + len >= s->len) {
+ new_len = s->len + 16 + len;
+ new_buf = realloc(s->buf, new_len);
+ if (!new_buf)
+ return false;
+
+ s->len = new_len;
+ s->buf = new_buf;
+ }
+
+ memcpy(s->buf + s->pos, c, len);
+ s->pos += len;
+ return true;
+}
+
+static void add_separator(struct strbuf *s)
+{
+ const char *indent_chars = "\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
+ int len;
+
+ if (!s->indent)
+ return;
+
+ len = s->indent_level + 1;
+ if (len > strlen(indent_chars))
+ len = strlen(indent_chars);
+
+ blobmsg_puts(s, indent_chars, len);
+}
+
+
+static void blobmsg_format_string(struct strbuf *s, const char *str)
+{
+ const unsigned char *p, *last, *end;
+ char buf[8] = "\\u00";
+
+ end = (unsigned char *) str + strlen(str);
+ blobmsg_puts(s, "\"", 1);
+ for (p = (unsigned char *) str, last = p; *p; p++) {
+ char escape = '\0';
+ int len;
+
+ switch(*p) {
+ case '\b':
+ escape = 'b';
+ break;
+ case '\n':
+ escape = 'n';
+ break;
+ case '\t':
+ escape = 't';
+ break;
+ case '\r':
+ escape = 'r';
+ break;
+ case '"':
+ case '\\':
+ case '/':
+ escape = *p;
+ break;
+ default:
+ if (*p < ' ')
+ escape = 'u';
+ break;
+ }
+
+ if (!escape)
+ continue;
+
+ if (p > last)
+ blobmsg_puts(s, (char *) last, p - last);
+ last = p + 1;
+ buf[1] = escape;
+
+ if (escape == 'u') {
+ sprintf(buf + 4, "%02x", (unsigned char) *p);
+ len = 6;
+ } else {
+ len = 2;
+ }
+ blobmsg_puts(s, buf, len);
+ }
+
+ blobmsg_puts(s, (char *) last, end - last);
+ blobmsg_puts(s, "\"", 1);
+}
+
+static void blobmsg_format_json_list(struct strbuf *s, struct blob_attr *attr, int len, bool array);
+
+static void blobmsg_format_element(struct strbuf *s, struct blob_attr *attr, bool without_name, bool head)
+{
+ const char *data_str;
+ char buf[32];
+ void *data;
+ int len;
+
+ if (!blobmsg_check_attr(attr, false))
+ return;
+
+ if (!without_name && blobmsg_name(attr)[0]) {
+ blobmsg_format_string(s, blobmsg_name(attr));
+ blobmsg_puts(s, ": ", s->indent ? 2 : 1);
+ }
+
+ data = blobmsg_data(attr);
+ len = blobmsg_data_len(attr);
+
+ if (!head && s->custom_format) {
+ data_str = s->custom_format(s->priv, attr);
+ if (data_str)
+ goto out;
+ }
+
+ data_str = buf;
+ switch(blob_id(attr)) {
+ case BLOBMSG_TYPE_UNSPEC:
+ sprintf(buf, "null");
+ break;
+ case BLOBMSG_TYPE_BOOL:
+ sprintf(buf, "%s", *(uint8_t *)data ? "true" : "false");
+ break;
+ case BLOBMSG_TYPE_INT16:
+ sprintf(buf, "%d", be16_to_cpu(*(uint16_t *)data));
+ break;
+ case BLOBMSG_TYPE_INT32:
+ sprintf(buf, "%d", (int32_t) be32_to_cpu(*(uint32_t *)data));
+ break;
+ case BLOBMSG_TYPE_INT64:
+ sprintf(buf, "%" PRId64, (int64_t) be64_to_cpu(*(uint64_t *)data));
+ break;
+ case BLOBMSG_TYPE_DOUBLE:
+ sprintf(buf, "%lf", blobmsg_get_double(attr));
+ break;
+ case BLOBMSG_TYPE_STRING:
+ blobmsg_format_string(s, data);
+ return;
+ case BLOBMSG_TYPE_ARRAY:
+ blobmsg_format_json_list(s, data, len, true);
+ return;
+ case BLOBMSG_TYPE_TABLE:
+ blobmsg_format_json_list(s, data, len, false);
+ return;
+ }
+
+out:
+ blobmsg_puts(s, data_str, strlen(data_str));
+}
+
+static void blobmsg_format_json_list(struct strbuf *s, struct blob_attr *attr, int len, bool array)
+{
+ struct blob_attr *pos;
+ bool first = true;
+ int rem = len;
+
+ blobmsg_puts(s, (array ? "[" : "{" ), 1);
+ s->indent_level++;
+ add_separator(s);
+ __blob_for_each_attr(pos, attr, rem) {
+ if (!first) {
+ blobmsg_puts(s, ",", 1);
+ add_separator(s);
+ }
+
+ blobmsg_format_element(s, pos, array, false);
+ first = false;
+ }
+ s->indent_level--;
+ add_separator(s);
+ blobmsg_puts(s, (array ? "]" : "}"), 1);
+}
+
+static void setup_strbuf(struct strbuf *s, struct blob_attr *attr, blobmsg_json_format_t cb, void *priv, int indent)
+{
+ s->len = blob_len(attr);
+ s->buf = malloc(s->len);
+ s->pos = 0;
+ s->custom_format = cb;
+ s->priv = priv;
+ s->indent = false;
+
+ if (indent >= 0) {
+ s->indent = true;
+ s->indent_level = indent;
+ }
+}
+
+char *blobmsg_format_json_with_cb(struct blob_attr *attr, bool list, blobmsg_json_format_t cb, void *priv, int indent)
+{
+ struct strbuf s;
+ bool array;
+ char *ret;
+
+ setup_strbuf(&s, attr, cb, priv, indent);
+ if (!s.buf)
+ return NULL;
+
+ array = blob_is_extended(attr) &&
+ blobmsg_type(attr) == BLOBMSG_TYPE_ARRAY;
+
+ if (list)
+ blobmsg_format_json_list(&s, blobmsg_data(attr), blobmsg_data_len(attr), array);
+ else
+ blobmsg_format_element(&s, attr, false, false);
+
+ if (!s.len) {
+ free(s.buf);
+ return NULL;
+ }
+
+ ret = realloc(s.buf, s.pos + 1);
+ if (!ret) {
+ free(s.buf);
+ return NULL;
+ }
+
+ ret[s.pos] = 0;
+
+ return ret;
+}
+
+char *blobmsg_format_json_value_with_cb(struct blob_attr *attr, blobmsg_json_format_t cb, void *priv, int indent)
+{
+ struct strbuf s;
+ char *ret;
+
+ setup_strbuf(&s, attr, cb, priv, indent);
+ if (!s.buf)
+ return NULL;
+
+ blobmsg_format_element(&s, attr, true, false);
+
+ if (!s.len) {
+ free(s.buf);
+ return NULL;
+ }
+
+ ret = realloc(s.buf, s.pos + 1);
+ if (!ret) {
+ free(s.buf);
+ return NULL;
+ }
+
+ ret[s.pos] = 0;
+
+ return ret;
+}
projects / project / libubox.git / blobdiff