public void EvalDiff1(RCRunner runner, RCClosure closure, RCString left, RCString right)
{
diff_match_patch dmp = new diff_match_patch();
List <Diff> diffs = dmp.diff_main(left[0], right[0]);
string result = dmp.diff_text1(diffs);
runner.Yield(closure, new RCString(result));
}
/// <summary>
/// Unpatch a JSON object
/// </summary>
/// <param name="right">Patched JSON object</param>
/// <param name="patch">JSON Patch Document</param>
/// <returns>Unpatched JSON object</returns>
/// <exception cref="System.IO.InvalidDataException">Thrown if the patch document is invalid</exception>
public JToken Unpatch(JToken right, JToken patch)
{
if (patch == null)
{
return(right);
}
if (patch.Type == JTokenType.Object)
{
var patchObj = (JObject)patch;
JProperty arrayDiffCanary = patchObj.Property("_t");
if (right != null &&
right.Type == JTokenType.Array &&
arrayDiffCanary != null &&
arrayDiffCanary.Value.Type == JTokenType.String &&
arrayDiffCanary.ToObject <string>() == "a")
{
return(ArrayUnpatch((JArray)right, patchObj));
}
return(ObjectUnpatch(right as JObject, patchObj));
}
if (patch.Type == JTokenType.Array)
{
var patchArray = (JArray)patch;
if (patchArray.Count == 1) // Add (we need to remove the property)
{
return(null);
}
else if (patchArray.Count == 2) // Replace
{
return(patchArray[0]);
}
else if (patchArray.Count == 3) // Delete, Move or TextDiff
{
if (patchArray[2].Type != JTokenType.Integer)
{
throw new InvalidDataException("Invalid patch object");
}
int op = patchArray[2].Value <int>();
if (op == 0)
{
return(patchArray[0]);
}
else if (op == 2)
{
var dmp = new diff_match_patch();
List <Patch> patches = dmp.patch_fromText(patchArray[0].ToObject <string>());
if (patches.Count != 1)
{
throw new InvalidDataException("Invalid textline");
}
string left = dmp.diff_text1(patches[0].diffs);
return(left);
}
else
{
throw new InvalidDataException("Invalid patch object");
}
}
else
{
throw new InvalidDataException("Invalid patch object");
}
}
return(null);
}
