/// ///  词语解释/// class DictWord{/// /// 解析/// public string Description{get;set;}}/// /// 词典索引/// class DictIndex{/// /// 词语/// public string Word{get;set;}/// /// 偏移/// public int Offset{get;set;}/// /// 数据大小/// public int DataSize{get;set;}}/// /// 词典信息/// class DictInfo{/// /// 词典名称/// public string BookName{get;set;}/// /// 收录词数/// public int WordCount{get;set;}/// /// 当前偏移/// public int CurrentOffset{get;set;}}

/// /// 词典/// class Dict{DictInfo info;SortedList indexs;List words;/// /// 索引文件/// string idxFile = "dic.idx";/// /// 数据文件/// string dictfile = "dic.dict";/// /// 词典信息文件/// string ifoFile = "dic.ifo";BinaryReader idxReader;FileStream idxStream;BinaryReader dictReader;FileStream dictStream;/// /// 查询使用/// public Dict(){LoadDictInfo();idxStream = new FileStream(idxFile, FileMode.Open);idxReader = new BinaryReader(idxStream);dictStream = new FileStream(dictfile, FileMode.Open);dictReader = new BinaryReader(dictStream);}/// /// 创建时使用/// ///  public Dict(string name){info = new DictInfo { BookName = name, WordCount = 0, CurrentOffset = 0 };indexs = new SortedList();words = new List();}/// /// 获取词语解释/// ///  /// public string GetDescription(string word){var i = 0;var mid = info.WordCount / 2;var max = info.WordCount;DictIndex w = new DictIndex();while (i <= max){mid = (i + max) / 2;w = GetWordIndex(mid);if (string.Compare(w.Word, word) > 0){max = mid - 1;}else if (string.Compare(w.Word, word) < 0){i = mid + 1;}else{break;}}return "[" + w.Word + "]\n" + GetWordDescription(w);}/// ///  获取指定位置的索引/// ///  /// public DictIndex GetWordIndex(int wordIndex){idxStream.Seek(0, SeekOrigin.Begin);idxStream.Seek(wordIndex * 136, SeekOrigin.Begin);byte[] word = idxReader.ReadBytes(128);var dicIndex = new DictIndex();dicIndex.Word = Encoding.UTF8.GetString(word).Replace("\0", "");dicIndex.Offset = idxReader.ReadInt32();dicIndex.DataSize = idxReader.ReadInt32();return dicIndex;}/// ///  获取指定词语的解释/// ///  /// public string GetWordDescription(DictIndex dictIndex){dictStream.Seek(0, SeekOrigin.Begin);if (dictIndex.Offset != 0)dictStream.Seek(dictIndex.Offset, SeekOrigin.Begin);byte[] word = dictReader.ReadBytes(dictIndex.DataSize);return Encoding.UTF8.GetString(word).Replace("\0", "");}/// /// 添加词语/// ///  ///  public void Add(string word, string description){words.Add(new DictWord() { Description = description });indexs.Add(word, new DictIndex { DataSize = Encoding.UTF8.GetBytes(description).Length, Offset = info.CurrentOffset, Word = word });// 数量++info.WordCount++;// 偏移++info.CurrentOffset += Encoding.UTF8.GetBytes(description).Length;}/// /// 加载词典信息/// void LoadDictInfo(){var infos = File.ReadAllLines(ifoFile);info = new DictInfo{BookName = infos[0].Replace("BookName=", "").Trim(),WordCount = int.Parse(infos[1].Replace("WordCount=", "").Trim()),CurrentOffset = int.Parse(infos[2].Replace("CurrentOffset=", "").Trim()),};}/// /// 保存/// public void Save(){StringBuilder dicBuilder = new StringBuilder();dicBuilder.AppendLine(string.Format("BookName={0}", info.BookName));dicBuilder.AppendLine(string.Format("WordCount={0}", info.WordCount));dicBuilder.AppendLine(string.Format("CurrentOffset={0}", info.CurrentOffset));File.WriteAllText(ifoFile, dicBuilder.ToString(), Encoding.UTF8);dicBuilder = new StringBuilder();using (BinaryWriter idxWriter = new BinaryWriter(File.Open(dictfile, FileMode.Create))){foreach (var word in words){idxWriter.Write(Encoding.UTF8.GetBytes(word.Description));}}using (BinaryWriter idxWriter = new BinaryWriter(File.Open(idxFile, FileMode.Create))){foreach (var index in indexs){// 分块大小  128+4+4  = 136// word 最长128byte[] word = new byte[128];var wordData = Encoding.UTF8.GetBytes(index.Key);var length = Math.Min(128, wordData.Length);for (var i = 0; i < length; i++){word[i] = wordData[i];}idxWriter.Write(word);byte[] re = new byte[4];idxWriter.Write(index.Value.Offset);idxWriter.Write(index.Value.DataSize);}}}}

Dict dic = new Dict("病症词典");var files = new DirectoryInfo(@"G:\Users\Administrator\Desktop\新建文件夹 (3)\新建文件夹 (3)").GetFiles();foreach (var file in files){Console.WriteLine(file.FullName);dic.Add(file.Name.Replace("的症状.txt", ""), File.ReadAllText(file.FullName));}dic.Save();

var dict = new Dict();while (true){Console.Write("请输入词语:");var w = Console.ReadLine();Stopwatch sw = new Stopwatch();sw.Start();Console.WriteLine("找到词语:");Console.WriteLine(dict.GetDescription(w));sw.Stop();Console.WriteLine("耗时:" + sw.ElapsedMilliseconds + "ms");}