/// <summary>
/// remove operation
/// </summary>
/// <param name="target">target JToken object</param>
/// <param name="patch">json patch object</param>
/// <returns>JToken result after the remove operation</returns>
public static JToken Remove(JToken target, JObject patch)
{
if (patch["op"].Value <string>() != "remove")
{
return(target);
}
string path = patch["path"].Value <string>();
path = JsonPointer.ToJTokenPath(path);
var jToken = target.SelectToken(path);
if (jToken == null)
{
return(target);
}
if (jToken.Parent is JProperty)
{
jToken.Parent.Remove();
}
else
{
jToken.Remove();
}
return(target);
}
/// <summary>
/// replace operation
/// </summary>
/// <param name="target">target JToken object</param>
/// <param name="patch">json patch object</param>
/// <returns>JToken result after the replace operation</returns>
public static JToken Replace(JToken target, JObject patch)
{
if (patch["op"].Value <string>() != "replace")
{
return(target);
}
string path = patch["path"].Value <string>();
JToken value = patch["value"].Value <JToken>();
path = JsonPointer.ToJTokenPath(path);
target.SelectToken(path).Replace(value);
return(target);
}
/// <summary>
/// copy operation
/// </summary>
/// <param name="target">target JToken object</param>
/// <param name="patch">json patch object</param>
/// <returns>JToken result after the copy operation</returns>
public static JToken Copy(JToken target, JObject patch)
{
if (patch["op"].Value <string>() != "copy")
{
return(target);
}
string from = patch["from"].Value <string>();
string path = patch["path"].Value <string>();
var jTokenPath = JsonPointer.ToJTokenPath(from);
var jToken = target.SelectToken(jTokenPath);
Patch addPatch = new Patch("add", null, path, jToken);
Add(target, addPatch.Value);
return(target);
}
/// <summary>
/// test operation
/// </summary>
/// <param name="target">target JToken object</param>
/// <param name="patch">json patch object</param>
/// <returns>throwing an InvalidOperationException indicate test fail, else success</returns>
public static void Test(JToken target, JArray patches)
{
foreach (JObject patch in patches)
{
if (patch["op"].Value <string>() != "test")
{
throw new InvalidOperationException("Not a test operation: " + patch["op"].Value <string>());
}
string path = patch["path"].Value <string>();
JToken value = patch["value"].Value <JToken>();
var jTokenPath = JsonPointer.ToJTokenPath(path);
var jToken = target.SelectToken(jTokenPath);
if (!jToken.Equals(value))
{
throw new InvalidOperationException("Value at " + path + " does not match.");
}
}
}
