public override bool LessThan(System.Object a, System.Object b)
{
TextFragment fragA = (TextFragment)a;
TextFragment fragB = (TextFragment)b;
if (fragA.GetScore() == fragB.GetScore())
{
return(fragA.fragNum > fragB.fragNum);
}
else
{
return(fragA.GetScore() < fragB.GetScore());
}
}
/// <summary>Improves readability of a score-sorted list of TextFragments by merging any fragments
/// that were contiguous in the original text into one larger fragment with the correct order.
/// This will leave a "null" in the array entry for the lesser scored fragment.
///
/// </summary>
/// <param name="frag">An array of document fragments in descending score
/// </param>
private void MergeContiguousFragments(TextFragment[] frag)
{
bool mergingStillBeingDone;
if (frag.Length > 1)
{
do
{
mergingStillBeingDone = false; //initialise loop control flag
//for each fragment, scan other frags looking for contiguous blocks
for (int i = 0; i < frag.Length; i++)
{
if (frag[i] == null)
{
continue;
}
//merge any contiguous blocks
for (int x = 0; x < frag.Length; x++)
{
if (frag[x] == null)
{
continue;
}
if (frag[i] == null)
{
break;
}
TextFragment frag1 = null;
TextFragment frag2 = null;
int frag1Num = 0;
int frag2Num = 0;
int bestScoringFragNum;
int worstScoringFragNum;
//if blocks are contiguous....
if (frag[i].Follows(frag[x]))
{
frag1 = frag[x];
frag1Num = x;
frag2 = frag[i];
frag2Num = i;
}
else if (frag[x].Follows(frag[i]))
{
frag1 = frag[i];
frag1Num = i;
frag2 = frag[x];
frag2Num = x;
}
//merging required..
if (frag1 != null)
{
if (frag1.GetScore() > frag2.GetScore())
{
bestScoringFragNum = frag1Num;
worstScoringFragNum = frag2Num;
}
else
{
bestScoringFragNum = frag2Num;
worstScoringFragNum = frag1Num;
}
frag1.Merge(frag2);
frag[worstScoringFragNum] = null;
mergingStillBeingDone = true;
frag[bestScoringFragNum] = frag1;
}
}
}
}while (mergingStillBeingDone);
}
}