private static String _GetPageString(FixedDocument doc, int translatedPageNo, bool replaceAlefWithAlefHamza)
{
String pageString = null;
Debug.Assert(doc != null);
Debug.Assert(translatedPageNo >= 0 && translatedPageNo < doc.PageCount);
PageContent pageContent = doc.Pages[translatedPageNo];
Stream pageStream = pageContent.GetPageStream();
bool reverseRTL = true;
if (doc.HasExplicitStructure)
{
reverseRTL = false;
}
if (pageStream != null)
{
pageString = _ConstructPageString(pageStream, reverseRTL);
if (replaceAlefWithAlefHamza)
{
// Replace the alef-hamza with the alef.
pageString = TextFindEngine.ReplaceAlefHamzaWithAlef(pageString);
}
}
return(pageString);
}
// Token: 0x060039B7 RID: 14775 RVA: 0x00105DC4 File Offset: 0x00103FC4
private static int StandardMatchIndexCalculation(string textString, string findPattern, bool matchWholeWord, bool matchLast, bool ignoreCase, CompareInfo compareInfo, bool hasPreceedingSeparatorChar, bool hasFollowingSeparatorChar, out int matchLength)
{
CompareOptions options = ignoreCase ? CompareOptions.IgnoreCase : CompareOptions.None;
int num = -1;
int num2 = 0;
int i = textString.Length;
matchLength = 0;
while (i > 0)
{
num = (matchLast ? compareInfo.LastIndexOf(textString, findPattern, num2 + i - 1, i, options) : compareInfo.IndexOf(textString, findPattern, num2, i, options));
matchLength = findPattern.Length;
if (num == -1 || !matchWholeWord || TextFindEngine.IsAtWordBoundary(textString, num, matchLength, hasPreceedingSeparatorChar, hasFollowingSeparatorChar))
{
break;
}
if (matchLast)
{
num2 = 0;
i = num + matchLength - 1;
}
else
{
num2 = num + 1;
i = textString.Length - num2;
}
num = -1;
}
return(num);
}
// Token: 0x060039B3 RID: 14771 RVA: 0x00105B0C File Offset: 0x00103D0C
internal static TextRange InternalFind(ITextPointer startPosition, ITextPointer endPosition, string findPattern, CultureInfo cultureInfo, bool matchCase, bool matchWholeWord, bool matchLast, bool matchDiacritics, bool matchKashida, bool matchAlefHamza)
{
Invariant.Assert(startPosition.CompareTo(endPosition) <= 0);
ITextPointer textPointer;
LogicalDirection direction;
if (matchLast)
{
textPointer = endPosition;
direction = LogicalDirection.Backward;
}
else
{
textPointer = startPosition;
direction = LogicalDirection.Forward;
}
int num = Math.Max(64, findPattern.Length * 2 * 2);
textPointer = textPointer.CreatePointer();
while ((matchLast ? startPosition.CompareTo(textPointer) : textPointer.CompareTo(endPosition)) < 0)
{
ITextPointer textPointer2 = textPointer.CreatePointer();
char[] array = new char[num];
int[] array2 = new int[num + 1];
int num2 = TextFindEngine.SetFindTextAndFindTextPositionMap(startPosition, endPosition, textPointer, direction, matchLast, array, array2);
if (!matchDiacritics || num2 >= findPattern.Length)
{
int num3 = matchLast ? (array.Length - num2) : 0;
bool hasPreceedingSeparatorChar = false;
bool hasFollowingSeparatorChar = false;
if (matchWholeWord)
{
TextFindEngine.GetContextualInformation(textPointer2, matchLast ? (-array2[array2.Length - num2 - 1]) : array2[num2], out hasPreceedingSeparatorChar, out hasFollowingSeparatorChar);
}
string textString = new string(array, num3, num2);
int num5;
int num4 = TextFindEngine.FindMatchIndexFromFindContent(textString, findPattern, cultureInfo, matchCase, matchWholeWord, matchLast, matchDiacritics, matchKashida, matchAlefHamza, hasPreceedingSeparatorChar, hasFollowingSeparatorChar, out num5);
if (num4 != -1)
{
ITextPointer textPointer3 = textPointer2.CreatePointer();
textPointer3.MoveByOffset(matchLast ? (-array2[num3 + num4]) : array2[num4]);
ITextPointer textPointer4 = textPointer2.CreatePointer();
textPointer4.MoveByOffset(matchLast ? (-array2[num3 + num4 + num5]) : array2[num4 + num5]);
return(new TextRange(textPointer3, textPointer4));
}
if (num2 > findPattern.Length)
{
textPointer = textPointer2.CreatePointer();
textPointer.MoveByOffset(matchLast ? (-array2[array.Length - num2 + findPattern.Length]) : array2[num2 - findPattern.Length]);
}
}
}
return(null);
}
// Token: 0x060039B4 RID: 14772 RVA: 0x00105CA4 File Offset: 0x00103EA4
private static void GetContextualInformation(ITextPointer position, int oppositeEndOffset, out bool hasPreceedingSeparatorChar, out bool hasFollowingSeparatorChar)
{
ITextPointer position2 = position.CreatePointer(oppositeEndOffset, position.LogicalDirection);
if (oppositeEndOffset < 0)
{
hasPreceedingSeparatorChar = TextFindEngine.HasNeighboringSeparatorChar(position2, LogicalDirection.Backward);
hasFollowingSeparatorChar = TextFindEngine.HasNeighboringSeparatorChar(position, LogicalDirection.Forward);
return;
}
hasPreceedingSeparatorChar = TextFindEngine.HasNeighboringSeparatorChar(position, LogicalDirection.Backward);
hasFollowingSeparatorChar = TextFindEngine.HasNeighboringSeparatorChar(position2, LogicalDirection.Forward);
}
// Token: 0x060039B6 RID: 14774 RVA: 0x00105D68 File Offset: 0x00103F68
private static int FindMatchIndexFromFindContent(string textString, string findPattern, CultureInfo cultureInfo, bool matchCase, bool matchWholeWord, bool matchLast, bool matchDiacritics, bool matchKashida, bool matchAlefHamza, bool hasPreceedingSeparatorChar, bool hasFollowingSeparatorChar, out int matchLength)
{
bool flag;
bool flag2;
TextFindEngine.InitializeBidiFlags(findPattern, out flag, out flag2);
CompareInfo compareInfo = cultureInfo.CompareInfo;
int result;
if (!matchDiacritics && flag)
{
result = TextFindEngine.BidiIgnoreDiacriticsMatchIndexCalculation(textString, findPattern, matchKashida, matchAlefHamza, matchWholeWord, matchLast, !matchCase, compareInfo, hasPreceedingSeparatorChar, hasFollowingSeparatorChar, out matchLength);
}
else
{
result = TextFindEngine.StandardMatchIndexCalculation(textString, findPattern, matchWholeWord, matchLast, !matchCase, compareInfo, hasPreceedingSeparatorChar, hasFollowingSeparatorChar, out matchLength);
}
return(result);
}
private static CompareOptions _InitializeSearch(CultureInfo cultureInfo,
bool matchCase,
bool matchAlefHamza,
bool matchDiacritics,
ref string findPattern,
out bool replaceAlefWithAlefHamza)
{
CompareOptions compareOptions = CompareOptions.None;
replaceAlefWithAlefHamza = false;
if (!matchCase)
{
compareOptions |= CompareOptions.IgnoreCase;
}
bool stringContainedBidiCharacter;
bool stringContainedAlefCharacter;
// Initialize Bidi flags whether the string contains the bidi characters
// or alef character.
TextFindEngine.InitializeBidiFlags(
findPattern,
out stringContainedBidiCharacter,
out stringContainedAlefCharacter);
if (stringContainedAlefCharacter && !matchAlefHamza)
{
// Replace the alef-hamza with the alef.
findPattern = TextFindEngine.ReplaceAlefHamzaWithAlef(findPattern);
replaceAlefWithAlefHamza = true;
}
// Ignore Bidi diacritics that use for only Bidi language.
if (!matchDiacritics && stringContainedBidiCharacter)
{
// Ignore Bidi diacritics with checking non-space character.
compareOptions |= CompareOptions.IgnoreNonSpace;
}
return(compareOptions);
}
// Token: 0x06002E75 RID: 11893 RVA: 0x000D2854 File Offset: 0x000D0A54
private static string _GetPageString(FixedDocument doc, int translatedPageNo, bool replaceAlefWithAlefHamza)
{
string text = null;
PageContent pageContent = doc.Pages[translatedPageNo];
Stream pageStream = pageContent.GetPageStream();
bool reverseRTL = true;
if (doc.HasExplicitStructure)
{
reverseRTL = false;
}
if (pageStream != null)
{
text = FixedFindEngine._ConstructPageString(pageStream, reverseRTL);
if (replaceAlefWithAlefHamza)
{
text = TextFindEngine.ReplaceAlefHamzaWithAlef(text);
}
}
return(text);
}
// Token: 0x060039B2 RID: 14770 RVA: 0x001059FC File Offset: 0x00103BFC
public static ITextRange Find(ITextPointer findContainerStartPosition, ITextPointer findContainerEndPosition, string findPattern, FindFlags flags, CultureInfo cultureInfo)
{
if (findContainerStartPosition == null || findContainerEndPosition == null || findContainerStartPosition.CompareTo(findContainerEndPosition) == 0 || findPattern == null || findPattern == string.Empty)
{
return(null);
}
bool matchCase = (flags & FindFlags.MatchCase) > FindFlags.None;
bool flag = (flags & FindFlags.FindWholeWordsOnly) > FindFlags.None;
bool matchLast = (flags & FindFlags.FindInReverse) > FindFlags.None;
bool matchDiacritics = (flags & FindFlags.MatchDiacritics) > FindFlags.None;
bool matchKashida = (flags & FindFlags.MatchKashida) > FindFlags.None;
bool matchAlefHamza = (flags & FindFlags.MatchAlefHamza) > FindFlags.None;
if (flag)
{
ushort[] array = new ushort[1];
ushort[] array2 = new ushort[1];
char[] array3 = findPattern.ToCharArray();
SafeNativeMethods.GetStringTypeEx(0U, 1U, new char[]
{
array3[0]
}, 1, array);
SafeNativeMethods.GetStringTypeEx(0U, 1U, new char[]
{
array3[findPattern.Length - 1]
}, 1, array2);
if ((array[0] & 8) != 0 || (array[0] & 64) != 0 || (array2[0] & 8) != 0 || (array2[0] & 64) != 0)
{
flag = false;
}
}
if (findContainerStartPosition is DocumentSequenceTextPointer || findContainerStartPosition is FixedTextPointer)
{
return(FixedFindEngine.Find(findContainerStartPosition, findContainerEndPosition, findPattern, cultureInfo, matchCase, flag, matchLast, matchDiacritics, matchKashida, matchAlefHamza));
}
return(TextFindEngine.InternalFind(findContainerStartPosition, findContainerEndPosition, findPattern, cultureInfo, matchCase, flag, matchLast, matchDiacritics, matchKashida, matchAlefHamza));
}
// Token: 0x060039BF RID: 14783 RVA: 0x0010640C File Offset: 0x0010460C
private static bool IsAtWordBoundary(string textString, int matchIndex, int matchLength, bool hasPreceedingSeparatorChar, bool hasFollowingSeparatorChar)
{
bool result = false;
int length = textString.Length;
Invariant.Assert(matchIndex + matchLength <= length);
if (matchIndex == 0)
{
if (hasPreceedingSeparatorChar)
{
if (matchIndex + matchLength < length)
{
if (TextFindEngine.IsSeparatorChar(textString[matchIndex + matchLength]))
{
result = true;
}
}
else if (hasFollowingSeparatorChar)
{
result = true;
}
}
}
else if (matchIndex + matchLength == length)
{
if (TextFindEngine.IsSeparatorChar(textString[matchIndex - 1]) && hasFollowingSeparatorChar)
{
result = true;
}
}
else if (TextFindEngine.IsSeparatorChar(textString[matchIndex - 1]) && TextFindEngine.IsSeparatorChar(textString[matchIndex + matchLength]))
{
result = true;
}
return(result);
}
// Token: 0x060039B5 RID: 14773 RVA: 0x00105CE8 File Offset: 0x00103EE8
private static bool HasNeighboringSeparatorChar(ITextPointer position, LogicalDirection direction)
{
ITextPointer textPointer = position.GetNextInsertionPosition(direction);
if (textPointer == null)
{
return(true);
}
if (position.CompareTo(textPointer) > 0)
{
ITextPointer textPointer2 = position;
position = textPointer;
textPointer = textPointer2;
}
int offsetToPosition = position.GetOffsetToPosition(textPointer);
char[] array = new char[offsetToPosition];
int[] findTextPositionMap = new int[offsetToPosition + 1];
int num = TextFindEngine.SetFindTextAndFindTextPositionMap(position, textPointer, position.CreatePointer(), LogicalDirection.Forward, false, array, findTextPositionMap);
if (num == 0)
{
return(true);
}
bool result;
if (direction == LogicalDirection.Forward)
{
result = TextFindEngine.IsSeparatorChar(array[0]);
}
else
{
result = TextFindEngine.IsSeparatorChar(array[num - 1]);
}
return(result);
}
// Token: 0x06002E73 RID: 11891 RVA: 0x000D272C File Offset: 0x000D092C
private static CompareOptions _InitializeSearch(CultureInfo cultureInfo, bool matchCase, bool matchAlefHamza, bool matchDiacritics, ref string findPattern, out bool replaceAlefWithAlefHamza)
{
CompareOptions compareOptions = CompareOptions.None;
replaceAlefWithAlefHamza = false;
if (!matchCase)
{
compareOptions |= CompareOptions.IgnoreCase;
}
bool flag;
bool flag2;
TextFindEngine.InitializeBidiFlags(findPattern, out flag, out flag2);
if (flag2 && !matchAlefHamza)
{
findPattern = TextFindEngine.ReplaceAlefHamzaWithAlef(findPattern);
replaceAlefWithAlefHamza = true;
}
if (!matchDiacritics && flag)
{
compareOptions |= CompareOptions.IgnoreNonSpace;
}
return(compareOptions);
}
// Token: 0x060039BC RID: 14780 RVA: 0x00106178 File Offset: 0x00104378
private static int SetFindTextAndFindTextPositionMap(ITextPointer startPosition, ITextPointer endPosition, ITextPointer navigator, LogicalDirection direction, bool matchLast, char[] findText, int[] findTextPositionMap)
{
Invariant.Assert(startPosition.CompareTo(navigator) <= 0);
Invariant.Assert(endPosition.CompareTo(navigator) >= 0);
int num = 0;
int num2 = 0;
if (matchLast && num2 == 0)
{
findTextPositionMap[findTextPositionMap.Length - 1] = 0;
}
while ((matchLast ? startPosition.CompareTo(navigator) : navigator.CompareTo(endPosition)) < 0)
{
switch (navigator.GetPointerContext(direction))
{
case TextPointerContext.None:
case TextPointerContext.ElementStart:
case TextPointerContext.ElementEnd:
if (TextFindEngine.IsAdjacentToFormatElement(navigator, direction))
{
num++;
}
else if (!matchLast)
{
findText[num2] = '\n';
findTextPositionMap[num2] = num2 + num;
num2++;
}
else
{
num2++;
findText[findText.Length - num2] = '\n';
findTextPositionMap[findText.Length - num2] = num2 + num;
}
navigator.MoveToNextContextPosition(direction);
break;
case TextPointerContext.Text:
{
int num3 = navigator.GetTextRunLength(direction);
num3 = Math.Min(num3, findText.Length - num2);
if (!matchLast)
{
num3 = Math.Min(num3, navigator.GetOffsetToPosition(endPosition));
navigator.GetTextInRun(direction, findText, num2, num3);
for (int i = num2; i < num2 + num3; i++)
{
findTextPositionMap[i] = i + num;
}
}
else
{
num3 = Math.Min(num3, startPosition.GetOffsetToPosition(navigator));
navigator.GetTextInRun(direction, findText, findText.Length - num2 - num3, num3);
int num4 = findText.Length - num2 - 1;
for (int j = num2; j < num2 + num3; j++)
{
findTextPositionMap[num4--] = j + num + 1;
}
}
navigator.MoveByOffset(matchLast ? (-num3) : num3);
num2 += num3;
break;
}
case TextPointerContext.EmbeddedElement:
if (!matchLast)
{
findText[num2] = '';
findTextPositionMap[num2] = num2 + num;
num2++;
}
else
{
num2++;
findText[findText.Length - num2] = '';
findTextPositionMap[findText.Length - num2] = num2 + num;
}
navigator.MoveToNextContextPosition(direction);
break;
}
if (num2 >= findText.Length)
{
break;
}
}
if (!matchLast)
{
if (num2 > 0)
{
findTextPositionMap[num2] = findTextPositionMap[num2 - 1] + 1;
}
else
{
findTextPositionMap[0] = 0;
}
}
return(num2);
}
// Token: 0x060039B8 RID: 14776 RVA: 0x00105E50 File Offset: 0x00104050
private static int BidiIgnoreDiacriticsMatchIndexCalculation(string textString, string findPattern, bool matchKashida, bool matchAlefHamza, bool matchWholeWord, bool matchLast, bool ignoreCase, CompareInfo compareInfo, bool hasPreceedingSeparatorChar, bool hasFollowingSeparatorChar, out int matchLength)
{
int num = -1;
int num2 = matchLast ? (textString.Length - 1) : 0;
int num3 = matchLast ? -1 : textString.Length;
int num4 = matchLast ? -1 : 1;
if (Environment.OSVersion.Version.Major >= 6)
{
uint num5 = 2U;
if (ignoreCase)
{
num5 |= 1U;
}
if (matchLast)
{
num5 |= 8388608U;
}
if (matchKashida)
{
textString = textString.Replace('ـ', '0');
findPattern = findPattern.Replace('ـ', '0');
}
if (matchAlefHamza)
{
textString = textString.Replace('آ', '0');
textString = textString.Replace('أ', '1');
textString = textString.Replace('إ', '2');
findPattern = findPattern.Replace('آ', '0');
findPattern = findPattern.Replace('أ', '1');
findPattern = findPattern.Replace('إ', '2');
}
matchLength = 0;
if (matchWholeWord)
{
int num6 = num2;
while (num == -1)
{
if (num6 == num3)
{
break;
}
for (int i = num6; i < textString.Length; i++)
{
string sourceString = textString.Substring(num6, i - num6 + 1);
int num7 = TextFindEngine.FindNLSString(compareInfo.LCID, num5, sourceString, findPattern, out matchLength);
if (num7 >= 0 && TextFindEngine.IsAtWordBoundary(textString, num6 + num7, matchLength, hasPreceedingSeparatorChar, hasFollowingSeparatorChar))
{
num = num6 + num7;
break;
}
}
num6 += num4;
}
}
else
{
num = TextFindEngine.FindNLSString(compareInfo.LCID, num5, textString, findPattern, out matchLength);
}
}
else
{
CompareOptions options = CompareOptions.IgnoreNonSpace | (ignoreCase ? CompareOptions.IgnoreCase : CompareOptions.None);
matchLength = 0;
int num8 = num2;
while (num == -1 && num8 != num3)
{
for (int j = num8; j < textString.Length; j++)
{
if (compareInfo.Compare(textString, num8, j - num8 + 1, findPattern, 0, findPattern.Length, options) == 0 && (!matchWholeWord || TextFindEngine.IsAtWordBoundary(textString, num8, j - num8 + 1, hasPreceedingSeparatorChar, hasFollowingSeparatorChar)) && (!matchKashida || TextFindEngine.IsKashidaMatch(textString.Substring(num8, j - num8 + 1), findPattern, compareInfo)) && (!matchAlefHamza || TextFindEngine.IsAlefHamzaMatch(textString.Substring(num8, j - num8 + 1), findPattern, compareInfo)))
{
num = num8;
matchLength = j - num8 + 1;
break;
}
}
num8 += num4;
}
}
return(num);
}
// 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);
}