public void CollectLineOffsets()
{
if (_listStartOffsets.Any())
{
throw new InvalidOperationException("Object already initialized.");
}
AddOffset(0);
for (byte *p = _blockStart; p < _blockEnd - _characterSize; p += _characterSize)
{
char ch;
if (_characterSize == 1)
{
ch = (char)*p;
}
else
{
ch = *(char *)p;
}
if (ch == LineBreak)
{
var byteOffset = Pointers.Offset32(_blockStart, p) + _characterSize;
AddOffset(byteOffset / _characterSize);
}
}
}
public FilePositionSpan GetLineExtent(int offset)
{
var lineNumber = GetLineStartIndex(offset);
var lineStartOffset = _listStartOffsets[lineNumber];
var lineEndOffset = (lineNumber == _listStartOffsets.Count - 1) ?
Pointers.Offset32(_blockStart, _blockEnd) :
_listStartOffsets[lineNumber + 1];
return(new FilePositionSpan {
Position = lineStartOffset, Length = lineEndOffset - lineStartOffset
});
}
public void CollectLineOffsets()
{
if (_listStartOffsets.Any())
{
throw new InvalidOperationException("Object already initialized.");
}
AddOffset(0);
for (var p = _blockStart; p < _blockEnd - 1; p++)
{
if (*p == _lineBreak)
{
AddOffset(Pointers.Offset32(_blockStart, p) + 1);
}
}
}
private IEnumerable <FilePositionSpan> FilterOnOtherEntries(SearchContentsData searchContentsData, IEnumerable <FilePositionSpan> matches)
{
FindEntryFunction findEntry = (position, length, entry) => {
var algo = searchContentsData.GetSearchAlgorithms(entry).AsciiStringSearchAlgo;
var start = Pointers.AddPtr(this.Pointer, position);
var result = algo.Search(start, length);
if (result == IntPtr.Zero)
{
return(-1);
}
return(position + Pointers.Offset32(start, result));
};
GetLineExtentFunction getLineExtent = position => {
int lineStart;
int lineLength;
NativeMethods.Ascii_GetLineExtentFromPosition(this.Pointer, (int)this.CharacterCount, position, out lineStart, out lineLength);
return(new FilePositionSpan {
Position = lineStart, Length = lineLength
});
};
return(new TextSourceTextSearch(getLineExtent, findEntry).FilterOnOtherEntries(searchContentsData.ParsedSearchString, matches));
}