VuoJsonUtilities.cc

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#include "VuoJsonUtilities.hh"
 
string VuoJsonUtilities::parseString(json_object *o, string key, string defaultString, bool *foundValue)
{
    string s = defaultString;
    if (foundValue)
        *foundValue = false;
 
    json_object *stringObject = NULL;
    if (json_object_object_get_ex(o, key.c_str(), &stringObject))
    {
        if (json_object_get_type(stringObject) == json_type_string)
        {
            s = json_object_get_string(stringObject);
            if (foundValue)
                *foundValue = true;
        }
    }
 
    return s;
}
 
string VuoJsonUtilities::parseObjectString(json_object *o, string outerKey, string innerKey, string defaultString, bool *foundValue)
{
    string s = defaultString;
    if (foundValue)
        *foundValue = false;
 
    json_object *outerObject = NULL;
    if (json_object_object_get_ex(o, outerKey.c_str(), &outerObject))
    {
        json_object *innerObject = NULL;
        if (json_object_object_get_ex(outerObject, innerKey.c_str(), &innerObject))
        {
            if (json_object_get_type(innerObject) == json_type_string)
            {
                s = json_object_get_string(innerObject);
                if (foundValue)
                    *foundValue = true;
            }
        }
    }
 
    return s;
}
 
int VuoJsonUtilities::parseInt(json_object *o, string key, int defaultInt, bool *foundValue)
{
    int i = defaultInt;
    if (foundValue)
        *foundValue = false;
 
    json_object *intObject = NULL;
    if (json_object_object_get_ex(o, key.c_str(), &intObject))
    {
        if (json_object_get_type(intObject) == json_type_int)
        {
            i = json_object_get_int(intObject);
            if (foundValue)
                *foundValue = true;
        }
    }
 
    return i;
}
 
bool VuoJsonUtilities::parseBool(json_object *o, string key, bool defaultBool, bool *foundValue)
{
    bool b = defaultBool;
    if (foundValue)
        *foundValue = false;
 
    json_object *boolObject = NULL;
    if (json_object_object_get_ex(o, key.c_str(), &boolObject))
    {
        if (json_object_get_type(boolObject) == json_type_boolean)
        {
            b = json_object_get_boolean(boolObject);
            if (foundValue)
                *foundValue = true;
        }
    }
 
    return b;
}
 
vector<string> VuoJsonUtilities::parseArrayOfStrings(json_object *o, string key)
{
    vector<string> items;
    json_object *arrayObject = NULL;
    if (json_object_object_get_ex(o, key.c_str(), &arrayObject))
    {
        if (json_object_get_type(arrayObject) == json_type_array)
        {
            int itemCount = json_object_array_length(arrayObject);
            for (int i = 0; i < itemCount; ++i)
            {
                json_object *item = json_object_array_get_idx(arrayObject, i);
                if (json_object_get_type(item) == json_type_string)
                    items.push_back( json_object_get_string(item) );
            }
        }
    }
    return items;
}
 
json_object *VuoJsonUtilities::getJson(vector<string> strings)
{
    json_object *a = json_object_new_array();
    for (vector<string>::iterator i = strings.begin(); i != strings.end(); ++i)
        json_object_array_add(a, json_object_new_string(i->c_str()));
    return a;
}