void FindNextCore(OurFindOptions options, HexBufferPoint? startingPosition, bool isIncrementalSearch) {
CancelFindAsyncSearcher();
if (startingPosition == null)
return;
var searchOptions = new SearchOptions(wpfHexView.BufferLines.BufferSpan, startingPosition.Value, DataKind, SearchString, options, IsBigEndian);
IAsyncSearcher findAsyncSearcherTmp = null;
findAsyncSearcherTmp = FindAsync(searchOptions, (result, foundSpan) => {
if (findAsyncSearcher != findAsyncSearcherTmp)
return;
CancelFindAsyncSearcher();
if (foundSpan != null) {
try {
isIncrementalSearchCaretMove = isIncrementalSearch;
ShowSearchResult(foundSpan.Value);
}
finally {
isIncrementalSearchCaretMove = false;
}
}
});
findAsyncSearcher = findAsyncSearcherTmp;
}
HexBufferPoint? GetStartingPosition(OurFindOptions options, bool restart) {
if (wpfHexView.Selection.IsEmpty)
return wpfHexView.Caret.Position.Position.ActivePosition.BufferPosition;
if (restart) {
if ((options & OurFindOptions.SearchReverse) == 0)
return wpfHexView.Selection.Start;
return wpfHexView.Selection.End;
}
var validSpan = wpfHexView.BufferLines.BufferSpan;
if ((options & OurFindOptions.SearchReverse) != 0) {
if (wpfHexView.Selection.End.Position >= validSpan.Start.Position + 2)
return wpfHexView.Selection.End - 2;
if ((options & OurFindOptions.Wrap) != 0)
return validSpan.End;
return null;
}
if (wpfHexView.Selection.Start < validSpan.End)
return wpfHexView.Selection.Start + 1;
if ((options & OurFindOptions.Wrap) != 0)
return validSpan.Start;
return null;
}
static HexFindOptions ToHexFindOptions(OurFindOptions options) {
var res = HexFindOptions.None;
if ((options & OurFindOptions.SearchReverse) != 0)
res |= HexFindOptions.SearchReverse;
if ((options & OurFindOptions.Wrap) != 0)
res |= HexFindOptions.Wrap;
if ((options & OurFindOptions.NoOverlaps) != 0)
res |= HexFindOptions.NoOverlaps;
return res;
}
HexBufferPoint? GetStartingPosition(SearchKind searchKind, OurFindOptions options, bool restart) {
Debug.Assert(searchKind != SearchKind.None);
switch (searchKind) {
case SearchKind.Find:
case SearchKind.Replace:
return GetStartingPosition(options, restart);
case SearchKind.IncrementalSearchBackward:
case SearchKind.IncrementalSearchForward:
return incrementalStartPosition;
default:
throw new ArgumentOutOfRangeException(nameof(searchKind));
}
}
public SearchOptions(HexBufferSpan searchRange, HexBufferPoint startingPosition, HexDataKind dataKind, string searchString, OurFindOptions findOptions, bool isBigEndian) {
SearchRange = searchRange;
StartingPosition = startingPosition;
DataKind = dataKind;
SearchString = searchString;
FindOptions = findOptions;
IsBigEndian = isBigEndian;
}
