/// <summary>
/// <para>Merge the right token into the left</para>
/// </summary>
/// <param name="left">Token to be merged into</param>
/// <param name="right">Token to merge, overwriting the left</param>
/// <param name="options">Options for merge</param>
public static void MergeInto(
this JContainer left, JToken right, MergeOptions options)
{
foreach (var rightChild in right.Children <JProperty>())
{
var rightChildProperty = rightChild;
var leftPropertyValue = left.SelectToken(rightChildProperty.Name);
// add on demand only. This will keep low memory usage.
if (leftPropertyValue == null && options.ADD_NONE_EXISTING)
{
// no matching property, just add
left.Add(rightChild);
}
else
{
if (leftPropertyValue == null && !options.ADD_NONE_EXISTING)
{
// becoz we don't want to add so continue checking for next property.
continue;
}
var leftProperty = (JProperty)leftPropertyValue.Parent;
var leftArray = leftPropertyValue as JArray;
var rightArray = rightChildProperty.Value as JArray;
if (leftArray != null && rightArray != null)
{
switch (options.ArrayHandling)
{
case MergeOptionArrayHandling.Concat:
foreach (var rightValue in rightArray)
{
leftArray.Add(rightValue);
}
break;
case MergeOptionArrayHandling.Overwrite:
leftProperty.Value = rightChildProperty.Value;
break;
}
}
else
{
var leftObject = leftPropertyValue as JObject;
//only set property if it not null
if (leftObject == null && !string.IsNullOrEmpty(rightChildProperty.Value.ToString()))
{
// replace value
leftProperty.Value = rightChildProperty.Value;
}
else
{
// recurse object
MergeInto(leftObject, rightChildProperty.Value, options);
}
}
}
}
}
