/// <summary>
/// Scans a queue of runs and highlights matches.
/// </summary>
/// <param name="runQueue">Run queue</param>
/// <param name="query">Query</param>
/// <param name="addHighlightDelegate">Delegate to call when a hit is found</param>
public virtual void ScanQueuedRuns(RunQueue runQueue, Query query, AddHighlight addHighlightDelegate)
{
//this.searchText = query;
System.Text.StringBuilder queuedText = new System.Text.StringBuilder(100);
queuedText.Length = 0;
for (int i = 0; i < runQueue.Count && (i <= 1 || queuedText.Length < 100); i++)//look at the text in queue up until 100 chars of the 2nd run
{
queuedText.Append(runQueue[i].HitAvailableText);
}
int currentIndex = 0;
string text = queuedText.ToString();
int index;
Hit hit;
TextMatchers textMatchers = query.GetTextMatchers(text, FindOptions);
while ((hit = GetNextMatch(textMatchers, currentIndex)).Start > -1 && currentGlobalScanHighlightCount < maximumHitsToHighlight)//find a hit for searchText in the plain text version.
{
index = hit.Start;
//we have a hit, we need to find the runs it was in and highlight
int highlightStart;
int gobbledChars = 0;
int runHitLength = hit.Length;
int highlightLength;
//string searchSegment = query.QueryText;
bool moreToFind = true;
while (moreToFind)
{
Run runAtPos = runQueue.HitPosition(index, runHitLength, out highlightStart, out gobbledChars);
//gobbledChars is the number of chars in runAtPos that were used (this could be the entire run length if the runHitLength is less than the
//number of chars in the run).
//indexOffset is where in the run to start highlighting
if (gobbledChars < runHitLength)
{
moreToFind = true;
//there weren't enough chars in the run, so we'll need to look for more
index += gobbledChars;
runHitLength -= gobbledChars;
highlightLength = gobbledChars;
}
else
{
moreToFind = false;
highlightLength = runHitLength;
}
addHighlightDelegate(runAtPos, highlightStart, highlightLength);
currentGlobalScanHighlightCount++;
currentIndex = index + runHitLength;
}
}
}
/// <summary>
///
/// </summary>
/// <param name="searchText"></param>
/// <param name="currentIndex"></param>
/// <param name="text"></param>
/// <returns></returns>
public Hit GetNextMatch_FOR_TESTING(string searchText, int currentIndex, string text)
{
Query q = new Query(searchText);
return(GetNextMatch(q.GetTextMatchers(text, FindOptions), currentIndex));
}
/// <summary>
///
/// </summary>
/// <param name="searchText"></param>
/// <param name="currentIndex"></param>
/// <param name="text"></param>
/// <returns></returns>
public Hit GetNextMatch_FOR_TESTING(string searchText, int currentIndex, string text)
{
Query q = new Query(searchText);
return GetNextMatch(q.GetTextMatchers(text, FindOptions), currentIndex);
}
/// <summary>
/// Scans a queue of runs and highlights matches.
/// </summary>
/// <param name="runQueue">Run queue</param>
/// <param name="query">Query</param>
/// <param name="addHighlightDelegate">Delegate to call when a hit is found</param>
public virtual void ScanQueuedRuns(RunQueue runQueue, Query query, AddHighlight addHighlightDelegate)
{
//this.searchText = query;
System.Text.StringBuilder queuedText = new System.Text.StringBuilder(100);
queuedText.Length = 0;
for (int i = 0; i < runQueue.Count && (i <= 1 || queuedText.Length < 100); i++)//look at the text in queue up until 100 chars of the 2nd run
{
queuedText.Append(runQueue[i].HitAvailableText);
}
int currentIndex = 0;
string text = queuedText.ToString();
int index;
Hit hit;
TextMatchers textMatchers = query.GetTextMatchers(text, FindOptions);
while ((hit = GetNextMatch(textMatchers, currentIndex)).Start > -1 && currentGlobalScanHighlightCount < maximumHitsToHighlight)//find a hit for searchText in the plain text version.
{
index = hit.Start;
//we have a hit, we need to find the runs it was in and highlight
int highlightStart;
int gobbledChars = 0;
int runHitLength = hit.Length;
int highlightLength;
//string searchSegment = query.QueryText;
bool moreToFind = true;
while (moreToFind)
{
Run runAtPos = runQueue.HitPosition(index, runHitLength, out highlightStart, out gobbledChars);
//gobbledChars is the number of chars in runAtPos that were used (this could be the entire run length if the runHitLength is less than the
//number of chars in the run).
//indexOffset is where in the run to start highlighting
if (gobbledChars < runHitLength)
{
moreToFind = true;
//there weren't enough chars in the run, so we'll need to look for more
index += gobbledChars;
runHitLength -= gobbledChars;
highlightLength = gobbledChars;
}
else
{
moreToFind = false;
highlightLength = runHitLength;
}
addHighlightDelegate(runAtPos, highlightStart, highlightLength);
currentGlobalScanHighlightCount++;
currentIndex = index + runHitLength;
}
}
}