/// <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 JsonMergeInto(
this JContainer left, JToken right, JsonMergeOptions options)
{
foreach (var rightChild in right.Children <JProperty>())
{
var rightChildProperty = rightChild;
var leftPropertyValue = left.SelectToken(rightChildProperty.Name);
if (leftPropertyValue == null)
{
// no matching property, just add
left.Add(rightChild);
}
else
{
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 JsonMergeOptionArrayHandling.Concat:
foreach (var rightValue in rightArray)
{
leftArray.Add(rightValue);
}
break;
case JsonMergeOptionArrayHandling.Overwrite:
leftProperty.Value = rightChildProperty.Value;
break;
}
}
else
{
var leftObject = leftPropertyValue as JObject;
if (leftObject == null)
{
// replace value
leftProperty.Value = rightChildProperty.Value;
}
else
{
// recurse object
JsonMergeInto(leftObject, rightChildProperty.Value, options);
}
}
}
}
}
/// <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 JsonMergeInto(
this JContainer left, JToken right, JsonMergeOptions options)
{
foreach (var rightChild in right.Children<JProperty>())
{
var rightChildProperty = rightChild;
var leftPropertyValue = left.SelectToken(rightChildProperty.Name);
if (leftPropertyValue == null)
{
// no matching property, just add
left.Add(rightChild);
}
else
{
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 JsonMergeOptionArrayHandling.Concat:
foreach (var rightValue in rightArray)
{
leftArray.Add(rightValue);
}
break;
case JsonMergeOptionArrayHandling.Overwrite:
leftProperty.Value = rightChildProperty.Value;
break;
}
}
else
{
var leftObject = leftPropertyValue as JObject;
if (leftObject == null)
{
// replace value
leftProperty.Value = rightChildProperty.Value;
}
else
// recurse object
JsonMergeInto(leftObject, rightChildProperty.Value, options);
}
}
}
}
/// <summary>
/// <para>Creates a new token which is the merge of the passed tokens</para>
/// </summary>
/// <param name="left">Token</param>
/// <param name="right">Token to merge, overwriting the left</param>
/// <param name="options">Options for merge</param>
/// <returns>A new merged token</returns>
public static JToken JsonMerge(
this JToken left, JToken right, JsonMergeOptions options)
{
if (left.Type != JTokenType.Object)
return right.DeepClone();
var leftClone = (JContainer)left.DeepClone();
JsonMergeInto(leftClone, right, options);
return leftClone;
}
/// <summary>
/// <para>Creates a new token which is the merge of the passed tokens</para>
/// </summary>
/// <param name="left">Token</param>
/// <param name="right">Token to merge, overwriting the left</param>
/// <param name="options">Options for merge</param>
/// <returns>A new merged token</returns>
public static JToken JsonMerge(this JToken left, JToken right, JsonMergeOptions options)
{
if (left.Type != JTokenType.Object)
{
return(right.DeepClone());
}
var leftClone = (JContainer)left.DeepClone();
JsonMergeInto(leftClone, right, options);
return(leftClone);
}
