+/*
+ * Copyright (C) 2010-2012 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.
+ *
+ * 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))
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)
+{
+ if (len <= 0)
+ return true;
+
+ if (s->pos + len >= s->len) {
+ s->len += 16 + len;
+ s->buf = realloc(s->buf, s->len);
+ if (!s->buf)
+ return false;
+ }
+ memcpy(s->buf + s->pos, c, len);
+ s->pos += len;
+ return true;
+}
+
+static void add_separator(struct strbuf *s)
+{
+ static char indent_chars[17] = "\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
+ int indent;
+ char *start;
+
+ if (!s->indent)
+ return;
+
+ indent = s->indent_level;
+ if (indent > 16)
+ indent = 16;
+
+ start = &indent_chars[sizeof(indent_chars) - indent - 1];
+ *start = '\n';
+ blobmsg_puts(s, start, indent + 1);
+ *start = '\t';
+}
+
+
+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 array, bool head)
+{
+ const char *data_str;
+ char buf[32];
+ void *data;
+ int len;
+
+ if (!blobmsg_check_attr(attr, false))
+ return;
+
+ if (!array && 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_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);
+}
+
+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;
+
+ 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;
+ }
+
+ 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;
+ }
+
+ s.buf = realloc(s.buf, s.pos + 1);
+ s.buf[s.pos] = 0;
+
+ return s.buf;
+}
projects / project / libubox.git / blobdiff