private static void PostProcessPans(DiffResult result)
{
var i = 0;
while (i < result.LeftPan.Count)
{
var removedLines = CountOfLinese(result, DiffActionType.Deleted, i);
if (removedLines > 0)
{
var addedLines = CountOfLinese(result, DiffActionType.Added, i + removedLines);
var offset = 0;
var count = removedLines;
if (removedLines > addedLines)
{
offset = removedLines - addedLines;
count = addedLines;
}
if (count == 0)
{
i += Math.Max(removedLines, addedLines);
}
else
{
MakeLinesUpdated(result, i + offset, count*2);
i += count;
}
}
else
{
i++;
}
}
}
private static void PostProcessPans(DiffResult result)
{
var i = 0;
while (i < result.LeftPan.Count)
{
var removedLines = CountOfLinese(result, DiffActionType.Deleted, i);
if (removedLines > 0)
{
var addedLines = CountOfLinese(result, DiffActionType.Added, i + removedLines);
var offset = 0;
var count = removedLines;
if (removedLines > addedLines)
{
offset = removedLines - addedLines;
count = addedLines;
}
if (count == 0)
{
i += Math.Max(removedLines, addedLines);
}
else
{
MakeLinesUpdated(result, i + offset, count * 2);
i += count;
}
}
else
{
i++;
}
}
}
public DiffResult GetDiff(string baseSources, string diffSource)
{
var result = new DiffResult();
var diff = Diff.DiffText(baseSources, diffSource, true, true, false);
baseSources = baseSources.Replace("\r", "");
diffSource = diffSource.Replace("\r", "");
var aLines = baseSources.Split('\n');
var bLines = diffSource.Split('\n');
var n = 0;
var leftLineNumber = 0;
var rightLineNumber = 0;
for (var diffItem = 0; diffItem < diff.Length; diffItem++)
{
var aItem = diff[diffItem];
// write unchanged lines
while ((n < aItem.StartB) && (n < bLines.Length))
{
result.LeftPan.Add(new DiffLineData(bLines[n], DiffActionType.None, leftLineNumber));
result.RightPan.Add(new DiffLineData(bLines[n], DiffActionType.None, rightLineNumber));
n++;
leftLineNumber++;
rightLineNumber++;
} // while
for (var m = 0; m < aItem.deletedA; m++)
{
result.LeftPan.Add(new DiffLineData(aLines[aItem.StartA + m], DiffActionType.Deleted, leftLineNumber));
result.RightPan.Add(new DiffLineData("", DiffActionType.None, -1));
leftLineNumber++;
} // for
// write inserted lines
while (n < aItem.StartB + aItem.insertedB)
{
result.RightPan.Add(new DiffLineData(bLines[n], DiffActionType.Added, rightLineNumber));
result.LeftPan.Add(new DiffLineData("", DiffActionType.None, -1));
n++;
rightLineNumber++;
}
}
// write rest of unchanged lines
while (n < bLines.Length)
{
result.LeftPan.Add(new DiffLineData(bLines[n], DiffActionType.None, leftLineNumber));
result.RightPan.Add(new DiffLineData(bLines[n], DiffActionType.None, rightLineNumber));
leftLineNumber++;
rightLineNumber++;
n++;
}
PostProcessPans(result);
return(result);
}
public PluginCommandResponseMessage Execute(string args)
{
var fileArgs = args.Deserialize<FileViewDiffArgs>();
try
{
var revision = _repository.GetRevisionId(fileArgs.TpRevisionId);
var diff = new DiffResult();
if (revision != null)
{
var vcs = _vcsFactory.Get(revision.Profile);
diff = vcs.GetDiff(revision.RevisionId.RevisionId, fileArgs.Path);
}
return new PluginCommandResponseMessage
{
PluginCommandStatus = PluginCommandStatus.Succeed,
ResponseData = diff.Serialize()
};
}
catch
{
return new PluginCommandResponseMessage
{
PluginCommandStatus = PluginCommandStatus.Error,
ResponseData = "Unable to connect to a remote repository."
};
}
}
public DiffResult GetDiff(string baseSources, string diffSource)
{
var result = new DiffResult();
var diff = Diff.DiffText(baseSources, diffSource, true, true, false);
baseSources = baseSources.Replace("\r", "");
diffSource = diffSource.Replace("\r", "");
var aLines = baseSources.Split('\n');
var bLines = diffSource.Split('\n');
var n = 0;
var leftLineNumber = 0;
var rightLineNumber = 0;
for (var diffItem = 0; diffItem < diff.Length; diffItem++)
{
var aItem = diff[diffItem];
// write unchanged lines
while ((n < aItem.StartB) && (n < bLines.Length))
{
result.LeftPan.Add(new DiffLineData(bLines[n], DiffActionType.None, leftLineNumber));
result.RightPan.Add(new DiffLineData(bLines[n], DiffActionType.None, rightLineNumber));
n++;
leftLineNumber++;
rightLineNumber++;
} // while
for (var m = 0; m < aItem.deletedA; m++)
{
result.LeftPan.Add(new DiffLineData(aLines[aItem.StartA + m], DiffActionType.Deleted, leftLineNumber));
result.RightPan.Add(new DiffLineData("", DiffActionType.None, -1));
leftLineNumber++;
} // for
// write inserted lines
while (n < aItem.StartB + aItem.insertedB)
{
result.RightPan.Add(new DiffLineData(bLines[n], DiffActionType.Added, rightLineNumber));
result.LeftPan.Add(new DiffLineData("", DiffActionType.None, -1));
n++;
rightLineNumber++;
}
}
// write rest of unchanged lines
while (n < bLines.Length)
{
result.LeftPan.Add(new DiffLineData(bLines[n], DiffActionType.None, leftLineNumber));
result.RightPan.Add(new DiffLineData(bLines[n], DiffActionType.None, rightLineNumber));
leftLineNumber++;
rightLineNumber++;
n++;
}
PostProcessPans(result);
return result;
}
private static int CountOfLinese(DiffResult result, DiffActionType action, int i)
{
var count = 0;
while (i < result.LeftPan.Count)
{
if (result.LeftPan[i].Action == action || result.RightPan[i].Action == action)
{
count++;
}
else
{
break;
}
i++;
}
return(count);
}
private static void MakeLinesUpdated(DiffResult result, int position, int count)
{
var leftPos = position;
var rightPos = position;
for (var i = 0; i < count; i++)
{
if (result.LeftPan[leftPos].Action == DiffActionType.Deleted)
{
result.LeftPan[leftPos].Action = DiffActionType.Updated;
result.RightPan.RemoveAt(rightPos);
leftPos++;
continue;
}
if (result.RightPan[rightPos].Action == DiffActionType.Added)
{
result.RightPan[rightPos].Action = DiffActionType.Updated;
result.LeftPan.RemoveAt(leftPos);
rightPos++;
continue;
}
}
}
private static int CountOfLinese(DiffResult result, DiffActionType action, int i)
{
var count = 0;
while (i < result.LeftPan.Count)
{
if (result.LeftPan[i].Action == action || result.RightPan[i].Action == action)
count++;
else
break;
i++;
}
return count;
}
private static void MakeLinesUpdated(DiffResult result, int position, int count)
{
var leftPos = position;
var rightPos = position;
for (var i = 0; i < count; i++)
{
if (result.LeftPan[leftPos].Action == DiffActionType.Deleted)
{
result.LeftPan[leftPos].Action = DiffActionType.Updated;
result.RightPan.RemoveAt(rightPos);
leftPos++;
continue;
}
if (result.RightPan[rightPos].Action == DiffActionType.Added)
{
result.RightPan[rightPos].Action = DiffActionType.Updated;
result.LeftPan.RemoveAt(leftPos);
rightPos++;
continue;
}
}
}
