private static void PatchForObject(JsonElement orig, JsonElement mod, List <PatchOperation> patch, JsonPointer path)
{
var origNames = orig.EnumerateObject().Select(x => x.Name).ToArray();
var modNames = mod.EnumerateObject().Select(x => x.Name).ToArray();
foreach (var k in origNames.Except(modNames))
{
patch.Add(PatchOperation.Remove(path.Combine(k)));
}
foreach (var k in modNames.Except(origNames))
{
var prop = mod.EnumerateObject().First(p => p.NameEquals(k));
patch.Add(PatchOperation.Add(path.Combine(k), prop.Value));
}
foreach (var k in origNames.Intersect(modNames))
{
var origProp = orig.EnumerateObject().First(p => p.NameEquals(k));
var modProp = mod.EnumerateObject().First(p => p.NameEquals(k));
if (origProp.Value.ValueKind != modProp.Value.ValueKind)
{
patch.Add(PatchOperation.Replace(JsonPointer.Parse(path + modProp.Name), modProp.Value));
}
else if (!string.Equals(origProp.Value.ToString(), modProp.Value.ToString())) // TODO
{
if (origProp.Value.ValueKind == JsonValueKind.Object)
{
PatchForObject(origProp.Value, modProp.Value, patch, path.Combine(modProp.Name));
}
else if (origProp.Value.ValueKind == JsonValueKind.Array)
{
PatchForArray(origProp.Value, modProp.Value, patch, path.Combine(modProp.Name));
}
else
{
patch.Add(PatchOperation.Replace(path.Combine(modProp.Name), modProp.Value));
}
}
}
}
private static void PatchForArray(JsonElement orig, JsonElement mod, List <PatchOperation> patch, JsonPointer path)
{
for (int i = 0; i < Math.Max(orig.GetArrayLength(), mod.GetArrayLength()); i++)
{
var ui = (uint)i;
if (i >= orig.GetArrayLength())
{
patch.Add(PatchOperation.Add(path.Combine(ui), mod[i]));
continue;
}
if (i >= mod.GetArrayLength())
{
patch.Add(PatchOperation.Remove(path.Combine(ui)));
continue;
}
var origObject = orig[i];
var modObject = mod[i];
if (origObject.ValueKind != modObject.ValueKind)
{
patch.Add(PatchOperation.Replace(path.Combine("/" + i), modObject));
}
else if (!string.Equals(origObject.ToString(), modObject.ToString())) // TODO
{
if (origObject.ValueKind == JsonValueKind.Object)
{
PatchForObject(origObject, modObject, patch, path.Combine(ui));
}
else if (origObject.ValueKind == JsonValueKind.Array)
{
PatchForArray(origObject, modObject, patch, path.Combine(ui));
}
else
{
patch.Add(PatchOperation.Replace(path.Combine(ui), modObject));
}
}
}
}