private void InitializeUniquePart(int lastUniqueWordIndex, bool fullParentMatched)
{
this.lastUniqueWord = ((lastUniqueWordIndex < this.childBodyFragment.EndWordIndex) ? lastUniqueWordIndex : (this.childBodyFragment.EndWordIndex - 1));
int lastNormalFragmentIndex = BodyDiffer.GetLastNormalFragmentIndex(this.childBodyFragment, lastUniqueWordIndex);
int num = (this.ChildScanner.Fragments.Count > lastNormalFragmentIndex + 1) ? ((int)this.ChildScanner.Fragments[lastNormalFragmentIndex + 1].FirstLine) : this.childBodyFragment.EndLineIndex;
num = ((num >= this.childBodyFragment.EndLineIndex) ? this.childBodyFragment.EndLineIndex : num);
int startLineIndex = this.childBodyFragment.StartLineIndex;
FragmentInfo.TrimBoundary(this.ChildScanner, ref startLineIndex, ref num);
if (fullParentMatched)
{
for (int i = this.childBodyFragment.StartLineIndex; i < num; i++)
{
if ((ulong)this.ChildScanner.Lines[i].FirstWordIndex > (ulong)((long)this.lastUniqueWord))
{
num = i;
FragmentInfo.TrimBoundary(this.ChildScanner, ref startLineIndex, ref num);
if (num > 0 && this.ChildScanner.Lines[num - 1].Category == ConversationBodyScanner.Scanner.LineCategory.PotentialNonMsHeader)
{
num--;
}
}
}
}
this.uniqueBodyPart = new FragmentInfo(this.ChildScanner, startLineIndex, num);
}
private void WordByWordDiff()
{
if (this.parentBodyFragment.StartWordIndex == this.parentBodyFragment.EndWordIndex)
{
this.uniqueBodyPart = this.childBodyFragment.Trim();
return;
}
if (this.childBodyFragment.IsEmpty)
{
return;
}
int lastNormalFragmentIndex = BodyDiffer.GetLastNormalFragmentIndex(this.parentBodyFragment, this.parentBodyFragment.EndWordIndex);
int lastNormalFragmentIndex2 = BodyDiffer.GetLastNormalFragmentIndex(this.childBodyFragment, this.childBodyFragment.EndWordIndex);
int num = this.childBodyFragment.StartWordIndex;
int num2 = this.parentBodyFragment.StartWordIndex;
int disclaimerWordStart = this.childBodyFragment.EndWordIndex;
if (lastNormalFragmentIndex < this.ParentScanner.Fragments.Count && lastNormalFragmentIndex2 < this.ChildScanner.Fragments.Count && this.ParentScanner.Fragments[lastNormalFragmentIndex].FirstWord < this.parentBodyFragment.EndWordIndex && this.ChildScanner.Fragments[lastNormalFragmentIndex2].FirstWord < this.childBodyFragment.EndWordIndex)
{
num = this.ChildScanner.Fragments[lastNormalFragmentIndex2].FirstWord;
num2 = this.ParentScanner.Fragments[lastNormalFragmentIndex].FirstWord;
while (num < this.childBodyFragment.EndWordIndex && num2 < this.parentBodyFragment.EndWordIndex && this.MatchWord(ref num, ref num2, true, 0))
{
num++;
num2++;
}
}
if (num2 != this.parentBodyFragment.EndWordIndex)
{
num = this.childBodyFragment.EndWordIndex - 1;
num2 = this.parentBodyFragment.EndWordIndex - 1;
}
else
{
disclaimerWordStart = num;
num = this.ChildScanner.Fragments[lastNormalFragmentIndex2].FirstWord - 1;
num2 = this.ParentScanner.Fragments[lastNormalFragmentIndex].FirstWord - 1;
}
while (num >= this.childBodyFragment.StartWordIndex && num2 >= this.parentBodyFragment.StartWordIndex && this.MatchWord(ref num, ref num2, false, 0))
{
num--;
num2--;
}
this.InitializeUniquePart(num, num2 < 0);
this.InitializeDisclaimerPart(disclaimerWordStart);
if (this.uniqueBodyPart.IsEmpty && !this.disclaimerPart.IsEmpty)
{
this.uniqueBodyPart = this.disclaimerPart;
this.disclaimerPart = FragmentInfo.Empty;
}
}