private TrieBinaryReader CreateTrieBinaryReader()
{
Stream stream = GetIndexStream();
BinaryReader binaryReader = new BinaryReader(stream);
var trieBinaryReader = new TrieBinaryReader(binaryReader, _header);
return(trieBinaryReader);
}
public static int CreateIndexFile(this TrieBinaryReader instance, TrieIndexHeader header, TrieNode node, string path, int readBufferSizeInBytes)
{
Stream stream = new FileStream(
path,
FileMode.OpenOrCreate,
FileAccess.Write,
FileShare.None,
readBufferSizeInBytes,
FileOptions.RandomAccess
);
return(TrieIndexSerializer.Serialize(node, header, stream));
}
private SearchResult CreateResultFromNode(TrieBinaryReader trieBinaryReader, TrieNodeStructSearchResult node, string keyword, SearchOptions options)
{
var searchResult = new SearchResult();
if (node.Status == TrieNodeSearchResultType.NotFound || node.Status == TrieNodeSearchResultType.Unkown)
{
searchResult.ResultType = node.Status;
return(searchResult);
}
string prefix = null;
if (node.Status == TrieNodeSearchResultType.FoundStartsWith)
{
if (!options.SuggestWhenFoundStartsWith)
{
searchResult.ResultType = node.Status;
return(searchResult);
}
prefix = keyword.Substring(0, node.LastFoundCharacterIndex - 1);
}
else if (node.Status == TrieNodeSearchResultType.FoundEquals)
{
//prefix = input.Keyword.Substring(0, input.Keyword.Length - 1);
if (GetTailStream() == null)
{
prefix = keyword.Substring(0, keyword.Length - 1);
}
else
{
prefix = keyword;
}
}
searchResult.ResultType = node.Status;
searchResult.Items = trieBinaryReader.GetAutoCompleteNodes(
node.LastFoundNodePosition,
prefix,
options.MaxItemCount,
new List <string>(),
GetTailStream()
).ToArray();
return(searchResult);
}
