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- #include <stdio.h>
- #include <float.h>
- #include <limits.h>
- #include <stdint.h>
- #include <inttypes.h>
- #include "blobmsg.h"
- #include "blobmsg_json.h"
- static const char *indent_str = "\t\t\t\t\t\t\t\t\t\t\t\t\t";
- #define indent_printf(indent, ...) do { \
- if (indent > 0) \
- fwrite(indent_str, indent, 1, stderr); \
- fprintf(stderr, __VA_ARGS__); \
- } while(0)
- static void dump_attr_data(struct blob_attr *data, int indent, int next_indent);
- static void
- dump_table(struct blob_attr *head, size_t len, int indent, bool array)
- {
- struct blob_attr *attr;
- struct blobmsg_hdr *hdr;
- indent_printf(indent, "{\n");
- __blob_for_each_attr(attr, head, len) {
- hdr = blob_data(attr);
- if (!array)
- indent_printf(indent + 1, "%s : ", hdr->name);
- dump_attr_data(attr, 0, indent + 1);
- }
- indent_printf(indent, "}\n");
- }
- static void dump_attr_data(struct blob_attr *data, int indent, int next_indent)
- {
- int type = blobmsg_type(data);
- switch(type) {
- case BLOBMSG_TYPE_STRING:
- indent_printf(indent, "%s (str)\n", blobmsg_get_string(data));
- break;
- case BLOBMSG_TYPE_INT8:
- indent_printf(indent, "%d (i8)\n", (int8_t) blobmsg_get_u8(data));
- break;
- case BLOBMSG_TYPE_INT16:
- indent_printf(indent, "%d (i16)\n", (int16_t) blobmsg_get_u16(data));
- break;
- case BLOBMSG_TYPE_INT32:
- indent_printf(indent, "%d (i32)\n", (int32_t) blobmsg_get_u32(data));
- break;
- case BLOBMSG_TYPE_INT64:
- indent_printf(indent, "%"PRId64" (i64)\n", (int64_t) blobmsg_get_u64(data));
- break;
- case BLOBMSG_TYPE_DOUBLE:
- indent_printf(indent, "%lf (dbl)\n", blobmsg_get_double(data));
- break;
- case BLOBMSG_TYPE_TABLE:
- case BLOBMSG_TYPE_ARRAY:
- if (!indent)
- indent_printf(indent, "\n");
- dump_table(blobmsg_data(data), blobmsg_data_len(data),
- next_indent, type == BLOBMSG_TYPE_ARRAY);
- break;
- }
- }
- enum {
- FOO_MESSAGE,
- FOO_LIST,
- FOO_TESTDATA
- };
- static const struct blobmsg_policy pol[] = {
- [FOO_MESSAGE] = {
- .name = "message",
- .type = BLOBMSG_TYPE_STRING,
- },
- [FOO_LIST] = {
- .name = "list",
- .type = BLOBMSG_TYPE_ARRAY,
- },
- [FOO_TESTDATA] = {
- .name = "testdata",
- .type = BLOBMSG_TYPE_TABLE,
- },
- };
- #ifndef ARRAY_SIZE
- #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
- #endif
- static void dump_message(struct blob_buf *buf)
- {
- struct blob_attr *tb[ARRAY_SIZE(pol)];
- if (blobmsg_parse(pol, ARRAY_SIZE(pol), tb, blob_data(buf->head), blob_len(buf->head)) != 0) {
- fprintf(stderr, "Parse failed\n");
- return;
- }
- if (tb[FOO_MESSAGE])
- fprintf(stderr, "Message: %s\n", (char *) blobmsg_data(tb[FOO_MESSAGE]));
- if (tb[FOO_LIST]) {
- fprintf(stderr, "List: ");
- dump_table(blobmsg_data(tb[FOO_LIST]), blobmsg_data_len(tb[FOO_LIST]), 0, true);
- }
- if (tb[FOO_TESTDATA]) {
- fprintf(stderr, "Testdata: ");
- dump_table(blobmsg_data(tb[FOO_TESTDATA]), blobmsg_data_len(tb[FOO_TESTDATA]), 0, false);
- }
- }
- static void
- fill_message(struct blob_buf *buf)
- {
- void *tbl;
- blobmsg_add_string(buf, "message", "Hello, world!");
- tbl = blobmsg_open_table(buf, "testdata");
- blobmsg_add_double(buf, "dbl-min", DBL_MIN);
- blobmsg_add_double(buf, "dbl-max", DBL_MAX);
- blobmsg_add_u8(buf, "foo", 0);
- blobmsg_add_u8(buf, "poo", 100);
- blobmsg_add_u8(buf, "moo-min", INT8_MIN);
- blobmsg_add_u8(buf, "moo-max", INT8_MAX);
- blobmsg_add_u16(buf, "bar-min", INT16_MIN);
- blobmsg_add_u16(buf, "bar-max", INT16_MAX);
- blobmsg_add_u32(buf, "baz-min", INT32_MIN);
- blobmsg_add_u32(buf, "baz-max", INT32_MAX);
- blobmsg_add_u64(buf, "taz-min", INT64_MIN);
- blobmsg_add_u64(buf, "taz-max", INT64_MAX);
- blobmsg_add_string(buf, "world", "2");
- blobmsg_close_table(buf, tbl);
- tbl = blobmsg_open_array(buf, "list");
- blobmsg_add_u8(buf, NULL, 0);
- blobmsg_add_u8(buf, NULL, 100);
- blobmsg_add_u8(buf, NULL, INT8_MIN);
- blobmsg_add_u8(buf, NULL, INT8_MAX);
- blobmsg_add_u16(buf, NULL, INT16_MIN);
- blobmsg_add_u16(buf, NULL, INT16_MAX);
- blobmsg_add_u32(buf, NULL, INT32_MIN);
- blobmsg_add_u32(buf, NULL, INT32_MAX);
- blobmsg_add_u64(buf, NULL, INT64_MIN);
- blobmsg_add_u64(buf, NULL, INT64_MAX);
- blobmsg_add_double(buf, NULL, DBL_MIN);
- blobmsg_add_double(buf, NULL, DBL_MAX);
- blobmsg_close_table(buf, tbl);
- }
- int main(int argc, char **argv)
- {
- char *json = NULL;
- static struct blob_buf buf;
- blobmsg_buf_init(&buf);
- fill_message(&buf);
- fprintf(stderr, "[*] blobmsg dump:\n");
- dump_message(&buf);
- json = blobmsg_format_json(buf.head, true);
- if (!json)
- exit(EXIT_FAILURE);
- fprintf(stderr, "\n[*] blobmsg to json: %s\n", json);
- blobmsg_buf_init(&buf);
- if (!blobmsg_add_json_from_string(&buf, json))
- exit(EXIT_FAILURE);
- fprintf(stderr, "\n[*] blobmsg from json:\n");
- dump_message(&buf);
- if (buf.buf)
- free(buf.buf);
- free(json);
- return 0;
- }
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