public static ArrayList GetDifference(TextFile source, TextFile destination)
{
var engine = new DiffEngine();
engine.ProcessDiff(source, destination, DiffEngineLevel.FastImperfect);
return engine.DiffReport();
}
private List<Change> GetFileChanges(String repositoryPath, String commitPath, RepositoryFile file)
{
var result = new List<Change>();
var sourcePath = file.GetFileRealPath(repositoryPath);
var destinationPath = file.GetFileRealPath(commitPath);
TextFile sourceFile;
TextFile destinationFile;
if (System.IO.File.Exists(destinationPath))
{
destinationFile = new TextFile(destinationPath);
}
else
{
destinationFile = new TextFile();
DataManager.GetInstance().MarkFileAsDeleted(file);
}
sourceFile = new TextFile(sourcePath);
var difference = DiffHelper.GetDifference(sourceFile, destinationFile);
foreach (DiffResultSpan diffResultSpan in difference)
{
switch (diffResultSpan.Status)
{
case DiffResultSpanStatus.DeleteSource:
for (int i = 0; i < diffResultSpan.Length; i++)
{
var change = new Change(file, ChangeType.Remove, diffResultSpan.SourceIndex,
((TextLine) sourceFile.GetByIndex(diffResultSpan.SourceIndex + i)).
Line);
result.Add(change);
}
break;
case DiffResultSpanStatus.AddDestination:
for (int i = 0; i < diffResultSpan.Length; i++)
{
var change = new Change(file, ChangeType.Add, diffResultSpan.DestIndex,
((TextLine)destinationFile.GetByIndex(diffResultSpan.DestIndex + i)).
Line);
result.Add(change);
}
break;
case DiffResultSpanStatus.Replace:
for (int i = 0; i < diffResultSpan.Length; i++)
{
var change = new Change(file, ChangeType.Update, diffResultSpan.SourceIndex,
((TextLine)sourceFile.GetByIndex(diffResultSpan.SourceIndex + i)).
Line);
result.Add(change);
}
break;
}
}
return result;
}