void TestDiffMatchPatch()
{
var s1 = @"//.
using Au; using Au.Types; using System; using System.Collections.Generic;
class Script : AScript { [STAThread] static void Main(string[] a) => new Script(a); Script(string[] args) { //;;;
var s=""one"";
";
var s2 = @"/*/ role exeProgram; outputPath %AFolders.Workspace%\bin; console true; /*/ //.
using Au; using Au.Types; using System; using System.Collections.Generic;
using My.NS1; //ąčę îôû
using My.NS2;
class Script : AScript { [STAThread] static void Main(string[] a) => new Script(a); Script(string[] args) { //;;;
var i=2;
";
var dmp = new diff_match_patch();
List <Diff> diff = dmp.diff_main(s1, s2, true);
dmp.diff_cleanupSemantic(diff);
var delta = dmp.diff_toDelta(diff);
AOutput.Write(delta);
AOutput.Write("----");
var d2 = dmp.diff_fromDelta(s1, delta);
//AOutput.Write(d2);
AOutput.Write(dmp.diff_text2(d2));
}
/// <summary>
/// Patch a JSON object
/// </summary>
/// <param name="left">Unpatched JSON object</param>
/// <param name="patch">JSON Patch Document</param>
/// <returns>Patched JSON object</returns>
/// <exception cref="System.IO.InvalidDataException">Thrown if the patch document is invalid</exception>
public JToken Patch(JToken left, JToken patch)
{
if (patch == null)
{
return(left);
}
if (patch.Type == JTokenType.Object)
{
var patchObj = (JObject)patch;
JProperty arrayDiffCanary = patchObj.Property("_t");
if (left != null &&
left.Type == JTokenType.Array &&
arrayDiffCanary != null &&
arrayDiffCanary.Value.Type == JTokenType.String &&
arrayDiffCanary.ToObject <string>() == "a")
{
return(ArrayPatch((JArray)left, patchObj));
}
return(ObjectPatch(left as JObject, patchObj));
}
if (patch.Type == JTokenType.Array)
{
var patchArray = (JArray)patch;
if (patchArray.Count == 1) // Add
{
return(patchArray[0]);
}
else if (patchArray.Count == 2) // Replace
{
return(patchArray[1]);
}
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(null);
}
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 right = dmp.diff_text2(patches[0].diffs);
return(right);
}
else
{
throw new InvalidDataException("Invalid patch object");
}
}
else
{
throw new InvalidDataException("Invalid patch object");
}
}
return(null);
}
