MAP_HANDLE Map_Clone()

in src/map.c [108:168]

• 55 lines of code
• 7 McCabe index (conditional complexity)

MAP_HANDLE Map_Clone(MAP_HANDLE handle)
{
    MAP_HANDLE_DATA* result;
    if (handle == NULL)
    {
        /*Codes_SRS_MAP_02_038: [Map_Clone returns NULL if parameter handle is NULL.]*/
        result = NULL;
        LogError("invalid arg to Map_Clone (NULL)");
    }
    else
    {
        MAP_HANDLE_DATA* handleData = handle;
        result = malloc(sizeof(MAP_HANDLE_DATA));
        if (result == NULL)
        {
            /*Codes_SRS_MAP_02_047: [If during cloning, any operation fails, then Map_Clone shall return NULL.] */
            /*do nothing, proceed to return it, this is an error case*/
            LogError("unable to malloc");
        }
        else
        {
            if (handleData->count == 0)
            {
                result->count = 0;
                result->keys = NULL;
                result->values = NULL;
                result->mapFilterCallback = NULL;
            }
            else
            {
                result->mapFilterCallback = handleData->mapFilterCallback;
                result->count = handleData->count;
                if( (result->keys = Map_CloneVector((const char* const*)handleData->keys, handleData->count))==NULL)
                {
                    /*Codes_SRS_MAP_02_047: [If during cloning, any operation fails, then Map_Clone shall return NULL.] */
                    LogError("unable to clone keys");
                    free(result);
                    result = NULL;
                }
                else if ((result->values = Map_CloneVector((const char* const*)handleData->values, handleData->count)) == NULL)
                {
                    size_t i;
                    /*Codes_SRS_MAP_02_047: [If during cloning, any operation fails, then Map_Clone shall return NULL.] */
                    LogError("unable to clone values");
                    for (i = 0; i < result->count; i++)
                    {
                        free(result->keys[i]);
                    }
                    free(result->keys);
                    free(result);
                    result = NULL;
                }
                else
                {
                    /*all fine, return it*/
                }
            }
        }
    }
    return (MAP_HANDLE)result;
}