private void ComputeLineDifferences(LineRecord lrec, LineRecord rrec)
{
DiffList_CharData left = new DiffList_CharData(lrec.Text);
DiffList_CharData right = new DiffList_CharData(rrec.Text);
DiffEngine engine = new DiffEngine();
engine.ProcessDiff(left, right, DiffEngineLevel.SlowPerfect);
ArrayList report = engine.DiffReport();
foreach (DiffResultSpan dres in report)
{
switch (dres.Status)
{
case DiffResultSpanStatus.NoChange:
break;
case DiffResultSpanStatus.Replace:
lrec.AddRange(dres.SourceIndex, dres.SourceIndex + dres.Length, Color.LightSalmon, Color.Empty);
rrec.AddRange(dres.DestIndex, dres.DestIndex + dres.Length, Color.LightSalmon, Color.Empty);
break;
case DiffResultSpanStatus.DeleteSource:
lrec.AddRange(dres.SourceIndex, dres.SourceIndex + dres.Length, Color.LightSalmon, Color.Empty);
break;
case DiffResultSpanStatus.AddDestination:
rrec.AddRange(dres.DestIndex, dres.DestIndex + dres.Length, Color.LightSalmon, Color.Empty);
break;
default:
break;
} // switch
} // foreach
}
private void UpdateDiffColors(Dictionary <int, Color> dcolors, List <LineRecord> lines)
{
for (int i = 0; i < lines.Count; i++)
{
LineRecord lrec = lines[i];
if (lrec.BackColor != Color.Empty)
{
Color mark = lrec.BackColor;
if (lrec.RangesCount > 0)
{
mark = lrec[0].BackColor;
}
dcolors.Add(i, mark);
}
} // for
}
public object Clone()
{
LineRecord res = new LineRecord();
res._backColor = this._backColor;
res._foreColor = this._foreColor;
res._lineNumber = this._lineNumber;
res._modified = this._modified;
res._rangeIndex = this._rangeIndex;
if (this._ranges != null)
{
res._ranges = new List <TextRange>();
foreach (TextRange tr in this._ranges)
{
res._ranges.Add((TextRange)tr.Clone());
}
}
else
{
res._ranges = null;
}
res._text = this._text;
return(res);
}
private void PrepareDiff(string[] left, string[] right, List <LineRecord> leftrecs, List <LineRecord> rightrecs)
{
DiffList_TextFile file1 = new DiffList_TextFile(left);
DiffList_TextFile file2 = new DiffList_TextFile(right);
DiffEngine engine = new DiffEngine();
engine.ProcessDiff(file1, file2, DiffEngineLevel.SlowPerfect);
ArrayList report = engine.DiffReport();
foreach (DiffResultSpan dres in report)
{
switch (dres.Status)
{
case DiffResultSpanStatus.NoChange:
for (int i = 0; i < dres.Length; i++)
{
LineRecord lrec = new LineRecord(i + dres.SourceIndex, left[i + dres.SourceIndex]);
leftrecs.Add(lrec);
LineRecord rrec = new LineRecord(i + dres.DestIndex, right[i + dres.DestIndex]);
rightrecs.Add(rrec);
}
break;
case DiffResultSpanStatus.Replace:
for (int i = 0; i < dres.Length; i++)
{
LineRecord lrec = new LineRecord(i + dres.SourceIndex, left[i + dres.SourceIndex]);
lrec.BackColor = Color.Khaki;
leftrecs.Add(lrec);
LineRecord rrec = new LineRecord(i + dres.DestIndex, right[i + dres.DestIndex]);
rrec.BackColor = Color.Khaki;
rightrecs.Add(rrec);
ComputeLineDifferences(lrec, rrec);
}
break;
case DiffResultSpanStatus.DeleteSource:
for (int i = 0; i < dres.Length; i++)
{
LineRecord lrec = new LineRecord(i + dres.SourceIndex, left[i + dres.SourceIndex]);
lrec.BackColor = Color.Khaki;
leftrecs.Add(lrec);
LineRecord rrec = new LineRecord();
rrec.BackColor = Color.LightGray;
rightrecs.Add(rrec);
}
break;
case DiffResultSpanStatus.AddDestination:
for (int i = 0; i < dres.Length; i++)
{
LineRecord lrec = new LineRecord();
lrec.BackColor = Color.LightGray;
leftrecs.Add(lrec);
LineRecord rrec = new LineRecord(i + dres.DestIndex, right[i + dres.DestIndex]);
rrec.BackColor = Color.Khaki;
rightrecs.Add(rrec);
}
break;
default:
break;
} // switch
} // foreach
}