json-glib example

CMakeLists.txt

cmake_minimum_required (VERSION 2.4)
project (json-glib-demo)

find_package(PkgConfig REQUIRED)
pkg_search_module(JSONGLIB REQUIRED json-glib-1.0)

add_executable (json-glib-demo jsontest.cpp)
include_directories(${JSONGLIB_INCLUDE_DIRS})
target_link_libraries(json-glib-demo ${JSONGLIB_LIBRARIES})

jsontest.cpp

#include <stdio.h>
#include <string>
#include <glib-object.h>
#include <json-glib/json-glib.h>

int main()
{
    std::string data = "{\"key1\": \"value1\", \"key2\": \"value2\"}";
    JsonParser *parser = json_parser_new ();
    GError* err = NULL;
    if (!json_parser_load_from_data (parser, data.c_str(), -1, &err)) {
        printf("error in parsing json data %s", err->message);
        g_error_free (err);
        g_object_unref (parser);
        return -1;
    }

    JsonReader *reader = json_reader_new (json_parser_get_root (parser));
    char** members = json_reader_list_members(reader);
    int i = 0;
    while (members[i] != 0) {
        std::string m = members[i];
        if (m == "key1") {
            json_reader_read_member (reader, members[i]);
            std::string value = json_reader_get_string_value (reader);
            json_reader_end_member (reader);
            printf("parse member %s\n", members[i]);
            printf("parse value %s\n", value.c_str());
        }
        i++;
    }

    g_strfreev(members);
    g_object_unref (reader);
    g_object_unref (parser);
    return 0;
}