// Token: 0x06002E71 RID: 11889 RVA: 0x000D23C8 File Offset: 0x000D05C8
internal static TextRange Find(ITextPointer start, ITextPointer end, string findPattern, CultureInfo cultureInfo, bool matchCase, bool matchWholeWord, bool matchLast, bool matchDiacritics, bool matchKashida, bool matchAlefHamza)
{
if (findPattern.Length == 0)
{
return(null);
}
IDocumentPaginatorSource documentPaginatorSource = start.TextContainer.Parent as IDocumentPaginatorSource;
DynamicDocumentPaginator dynamicDocumentPaginator = documentPaginatorSource.DocumentPaginator as DynamicDocumentPaginator;
int pageNumber;
int num;
if (matchLast)
{
pageNumber = dynamicDocumentPaginator.GetPageNumber((ContentPosition)start);
num = dynamicDocumentPaginator.GetPageNumber((ContentPosition)end);
}
else
{
pageNumber = dynamicDocumentPaginator.GetPageNumber((ContentPosition)end);
num = dynamicDocumentPaginator.GetPageNumber((ContentPosition)start);
}
TextRange textRange = null;
CompareInfo compareInfo = cultureInfo.CompareInfo;
bool replaceAlefWithAlefHamza = false;
CompareOptions compareOptions = FixedFindEngine._InitializeSearch(cultureInfo, matchCase, matchAlefHamza, matchDiacritics, ref findPattern, out replaceAlefWithAlefHamza);
int num2 = num;
FixedDocumentSequence fixedDocumentSequence = documentPaginatorSource as FixedDocumentSequence;
DynamicDocumentPaginator dynamicDocumentPaginator2 = null;
if (fixedDocumentSequence != null)
{
fixedDocumentSequence.TranslatePageNumber(num, out dynamicDocumentPaginator2, out num2);
}
if (num - pageNumber != 0)
{
ITextPointer startPosition = null;
ITextPointer endPosition = null;
FixedFindEngine._GetFirstPageSearchPointers(start, end, num2, matchLast, out startPosition, out endPosition);
textRange = TextFindEngine.InternalFind(startPosition, endPosition, findPattern, cultureInfo, matchCase, matchWholeWord, matchLast, matchDiacritics, matchKashida, matchAlefHamza);
if (textRange == null)
{
num = (matchLast ? (num - 1) : (num + 1));
int num3 = matchLast ? -1 : 1;
while (matchLast ? (num >= pageNumber) : (num <= pageNumber))
{
num2 = num;
dynamicDocumentPaginator2 = null;
FixedDocument fixedDocument;
if (fixedDocumentSequence != null)
{
fixedDocumentSequence.TranslatePageNumber(num, out dynamicDocumentPaginator2, out num2);
fixedDocument = (FixedDocument)dynamicDocumentPaginator2.Source;
}
else
{
fixedDocument = (documentPaginatorSource as FixedDocument);
}
string text = FixedFindEngine._GetPageString(fixedDocument, num2, replaceAlefWithAlefHamza);
if (text == null)
{
return(TextFindEngine.InternalFind(start, end, findPattern, cultureInfo, matchCase, matchWholeWord, matchLast, matchDiacritics, matchKashida, matchAlefHamza));
}
if (FixedFindEngine._FoundOnPage(text, findPattern, cultureInfo, compareOptions))
{
if (fixedDocumentSequence != null)
{
ChildDocumentBlock childBlock = fixedDocumentSequence.TextContainer.FindChildBlock(fixedDocument.DocumentReference);
if (matchLast)
{
end = new DocumentSequenceTextPointer(childBlock, new FixedTextPointer(false, LogicalDirection.Backward, fixedDocument.FixedContainer.FixedTextBuilder.GetPageEndFlowPosition(num2)));
start = new DocumentSequenceTextPointer(childBlock, new FixedTextPointer(false, LogicalDirection.Forward, fixedDocument.FixedContainer.FixedTextBuilder.GetPageStartFlowPosition(num2)));
}
else
{
start = new DocumentSequenceTextPointer(childBlock, new FixedTextPointer(false, LogicalDirection.Forward, fixedDocument.FixedContainer.FixedTextBuilder.GetPageStartFlowPosition(num2)));
end = new DocumentSequenceTextPointer(childBlock, new FixedTextPointer(false, LogicalDirection.Backward, fixedDocument.FixedContainer.FixedTextBuilder.GetPageEndFlowPosition(num2)));
}
}
else
{
FixedTextBuilder fixedTextBuilder = ((FixedDocument)documentPaginatorSource).FixedContainer.FixedTextBuilder;
if (matchLast)
{
end = new FixedTextPointer(false, LogicalDirection.Backward, fixedTextBuilder.GetPageEndFlowPosition(num));
start = new FixedTextPointer(false, LogicalDirection.Forward, fixedTextBuilder.GetPageStartFlowPosition(num));
}
else
{
start = new FixedTextPointer(false, LogicalDirection.Forward, fixedTextBuilder.GetPageStartFlowPosition(num));
end = new FixedTextPointer(false, LogicalDirection.Backward, fixedTextBuilder.GetPageEndFlowPosition(num));
}
}
textRange = TextFindEngine.InternalFind(start, end, findPattern, cultureInfo, matchCase, matchWholeWord, matchLast, matchDiacritics, matchKashida, matchAlefHamza);
if (textRange != null)
{
return(textRange);
}
}
num += num3;
}
}
}
else
{
FixedDocument doc = (dynamicDocumentPaginator2 != null) ? (dynamicDocumentPaginator2.Source as FixedDocument) : (documentPaginatorSource as FixedDocument);
string text2 = FixedFindEngine._GetPageString(doc, num2, replaceAlefWithAlefHamza);
if (text2 == null || FixedFindEngine._FoundOnPage(text2, findPattern, cultureInfo, compareOptions))
{
textRange = TextFindEngine.InternalFind(start, end, findPattern, cultureInfo, matchCase, matchWholeWord, matchLast, matchDiacritics, matchKashida, matchAlefHamza);
}
}
return(textRange);
}
//Searches for the specified pattern and updates start *or* end pointers depending on search direction
//At the end of the operation, start or end should be pointing to the beginning/end of the page
//of occurance of pattern respectively
internal static TextRange Find(ITextPointer start,
ITextPointer end,
string findPattern,
CultureInfo cultureInfo,
bool matchCase,
bool matchWholeWord,
bool matchLast,
bool matchDiacritics,
bool matchKashida,
bool matchAlefHamza)
{
Debug.Assert(start != null);
Debug.Assert(end != null);
Debug.Assert(((start is DocumentSequenceTextPointer) && (end is DocumentSequenceTextPointer)) ||
((start is FixedTextPointer) && (end is FixedTextPointer)));
Debug.Assert(findPattern != null);
if (findPattern.Length == 0)
{
return(null);
}
IDocumentPaginatorSource paginatorSource = start.TextContainer.Parent as IDocumentPaginatorSource;
DynamicDocumentPaginator paginator = paginatorSource.DocumentPaginator as DynamicDocumentPaginator;
Debug.Assert(paginator != null);
int pageNumber = -1;
int endPageNumber = -1;
if (matchLast)
{
endPageNumber = paginator.GetPageNumber((ContentPosition)start);
pageNumber = paginator.GetPageNumber((ContentPosition)end);
}
else
{
endPageNumber = paginator.GetPageNumber((ContentPosition)end);
pageNumber = paginator.GetPageNumber((ContentPosition)start);
}
TextRange result = null;
CompareInfo compareInfo = cultureInfo.CompareInfo;
bool replaceAlefWithAlefHamza = false;
CompareOptions compareOptions = _InitializeSearch(cultureInfo, matchCase, matchAlefHamza, matchDiacritics, ref findPattern, out replaceAlefWithAlefHamza);
//Translate the page number
int translatedPageNumber = pageNumber;
//If this is a DocumentSequence, we need to pass translated page number to the below call
FixedDocumentSequence documentSequence = paginatorSource as FixedDocumentSequence;
DynamicDocumentPaginator childPaginator = null;
if (documentSequence != null)
{
documentSequence.TranslatePageNumber(pageNumber, out childPaginator, out translatedPageNumber);
}
if (pageNumber - endPageNumber != 0)
{
ITextPointer firstSearchPageStart = null;
ITextPointer firstSearchPageEnd = null;
_GetFirstPageSearchPointers(start, end, translatedPageNumber, matchLast, out firstSearchPageStart, out firstSearchPageEnd);
Debug.Assert(firstSearchPageStart != null);
Debug.Assert(firstSearchPageEnd != null);
//Need to search the first page using TextFindEngine to start exactly from the requested search location to avoid false positives
result = TextFindEngine.InternalFind(firstSearchPageStart,
firstSearchPageEnd,
findPattern,
cultureInfo,
matchCase,
matchWholeWord,
matchLast,
matchDiacritics,
matchKashida,
matchAlefHamza);
if (result == null)
{
//Start from the next page and check all pages until the end
pageNumber = matchLast ? pageNumber - 1 : pageNumber + 1;
int increment = matchLast ? -1 : 1;
for (; matchLast?pageNumber >= endPageNumber : pageNumber <= endPageNumber; pageNumber += increment)
{
FixedDocument fixedDoc = null;
translatedPageNumber = pageNumber;
childPaginator = null;
if (documentSequence != null)
{
documentSequence.TranslatePageNumber(pageNumber, out childPaginator, out translatedPageNumber);
fixedDoc = (FixedDocument)childPaginator.Source;
}
else
{
fixedDoc = paginatorSource as FixedDocument;
}
Debug.Assert(fixedDoc != null);
String pageString = _GetPageString(fixedDoc, translatedPageNumber, replaceAlefWithAlefHamza);
if (pageString == null)
{
//This is not a page-per-stream
//Default back to slow search
return(TextFindEngine.InternalFind(start,
end,
findPattern,
cultureInfo,
matchCase,
matchWholeWord,
matchLast,
matchDiacritics,
matchKashida,
matchAlefHamza));
}
if (_FoundOnPage(pageString, findPattern, cultureInfo, compareOptions))
{
//Update end or start pointer depending on search direction
if (documentSequence != null)
{
ChildDocumentBlock childBlock = documentSequence.TextContainer.FindChildBlock(fixedDoc.DocumentReference);
if (matchLast)
{
end = new DocumentSequenceTextPointer(childBlock, new FixedTextPointer(false, LogicalDirection.Backward, fixedDoc.FixedContainer.FixedTextBuilder.GetPageEndFlowPosition(translatedPageNumber)));
start = new DocumentSequenceTextPointer(childBlock, new FixedTextPointer(false, LogicalDirection.Forward, fixedDoc.FixedContainer.FixedTextBuilder.GetPageStartFlowPosition(translatedPageNumber)));
}
else
{
start = new DocumentSequenceTextPointer(childBlock, new FixedTextPointer(false, LogicalDirection.Forward, fixedDoc.FixedContainer.FixedTextBuilder.GetPageStartFlowPosition(translatedPageNumber)));
end = new DocumentSequenceTextPointer(childBlock, new FixedTextPointer(false, LogicalDirection.Backward, fixedDoc.FixedContainer.FixedTextBuilder.GetPageEndFlowPosition(translatedPageNumber)));
}
}
else
{
//We are working on a FixedDocument
FixedTextBuilder textBuilder = ((FixedDocument)(paginatorSource)).FixedContainer.FixedTextBuilder;
if (matchLast)
{
end = new FixedTextPointer(false, LogicalDirection.Backward, textBuilder.GetPageEndFlowPosition(pageNumber));
start = new FixedTextPointer(false, LogicalDirection.Forward, textBuilder.GetPageStartFlowPosition(pageNumber));
}
else
{
start = new FixedTextPointer(false, LogicalDirection.Forward, textBuilder.GetPageStartFlowPosition(pageNumber));
end = new FixedTextPointer(false, LogicalDirection.Backward, textBuilder.GetPageEndFlowPosition(pageNumber));
}
}
result = TextFindEngine.InternalFind(start,
end,
findPattern,
cultureInfo,
matchCase,
matchWholeWord,
matchLast,
matchDiacritics,
matchKashida,
matchAlefHamza);
//If the result is null, this means we had a false positive
if (result != null)
{
return(result);
}
}
}
}
}
else
{
//Make sure fast search result and slow search result are consistent
FixedDocument fixedDoc = childPaginator != null ? childPaginator.Source as FixedDocument : paginatorSource as FixedDocument;
String pageString = _GetPageString(fixedDoc, translatedPageNumber, replaceAlefWithAlefHamza);
if (pageString == null ||
_FoundOnPage(pageString, findPattern, cultureInfo, compareOptions))
{
//The search is only limited to the current page
result = TextFindEngine.InternalFind(start,
end,
findPattern,
cultureInfo,
matchCase,
matchWholeWord,
matchLast,
matchDiacritics,
matchKashida,
matchAlefHamza);
}
}
return(result);
}