Esempio n. 1
0
        protected internal virtual void Load(BinaryReader br)
        {
            var length = br.ReadInt32();

            _keywords = new string[length];
            for (int i = 0; i < length; i++)
            {
                _keywords[i] = br.ReadString();
            }


            length = br.ReadInt32();
            var bs = br.ReadBytes(length);

            _dict = ByteArrToUshortArr(bs);


            length = br.ReadInt32();
            bs     = br.ReadBytes(length);
            _first = ByteArrToIntArr(bs);

            length = br.ReadInt32();
            bs     = br.ReadBytes(length);
            _end   = ByteArrToIntArr(bs);

            length       = br.ReadInt32();
            bs           = br.ReadBytes(length);
            _resultIndex = ByteArrToIntArr(bs);

            var dictLength = br.ReadInt32();

            _nextIndex = new IntDictionary[dictLength];
            _max       = new ushort[dictLength];
            _min       = new ushort[dictLength];


            for (int i = 0; i < dictLength; i++)
            {
                length = br.ReadInt32();
                bs     = br.ReadBytes(length);
                var keys = ByteArrToUshortArr(bs);

                length = br.ReadInt32();
                bs     = br.ReadBytes(length);
                var values = ByteArrToIntArr(bs);


                IntDictionary dictionary = new IntDictionary(keys, values);
                _nextIndex[i] = dictionary;
                if (length == 0)
                {
                    _min[i] = ushort.MaxValue;
                }
                else
                {
                    _max[i] = keys[keys.Length - 1];
                    _min[i] = keys[0];
                }
            }
        }
Esempio n. 2
0
        protected override void SetKeywords2(List <string> keywords)
        {
            List <TrieNode> allNode = BuildFirstLayerTrieNode(keywords);
            TrieNode        root    = allNode[0];

            StringBuilder stringBuilder = new StringBuilder();

            for (int i = 1; i < allNode.Count; i++)
            {
                stringBuilder.Append(allNode[i].Char);
            }
            var length = CreateDict(stringBuilder.ToString());

            stringBuilder = null;


            var allNode2 = new List <TrieNode3Ex>();

            for (int i = 0; i < allNode.Count; i++)
            {
                allNode2.Add(new TrieNode3Ex()
                {
                    Index = i
                });;
            }

            for (int i = 0; i < allNode2.Count; i++)
            {
                var oldNode = allNode[i];
                var newNode = allNode2[i];

                foreach (var item in oldNode.m_values)
                {
                    var key   = _dict[item.Key];
                    var index = item.Value.Index;
                    if (key == 0)
                    {
                        newNode.HasWildcard  = true;
                        newNode.WildcardNode = allNode2[index];
                        continue;
                    }
                    newNode.Add((char)key, allNode2[index]);
                }
                foreach (var item in oldNode.Results)
                {
                    if (oldNode.IsWildcard)
                    {
                        if (keywords[item].Length > oldNode.WildcardLayer)
                        {
                            newNode.SetResults(item);
                        }
                    }
                    else
                    {
                        newNode.SetResults(item);
                    }
                    //newNode.SetResults(item);
                }

                var failure = oldNode.Failure;
                while (failure != root)
                {
                    if (oldNode.IsWildcard && failure.Layer <= oldNode.WildcardLayer)
                    {
                        break;
                    }
                    foreach (var item in failure.m_values)
                    {
                        var key   = _dict[item.Key];
                        var index = item.Value.Index;
                        if (key == 0)
                        {
                            newNode.HasWildcard = true;
                            if (newNode.WildcardNode == null)
                            {
                                newNode.WildcardNode = allNode2[index];
                            }
                            continue;
                        }
                        if (newNode.HasKey((char)key) == false)
                        {
                            newNode.Add((char)key, allNode2[index]);
                        }
                    }
                    foreach (var item in failure.Results)
                    {
                        if (oldNode.IsWildcard)
                        {
                            if (keywords[item].Length > oldNode.WildcardLayer)
                            {
                                newNode.SetResults(item);
                            }
                        }
                        else
                        {
                            newNode.SetResults(item);
                        }
                    }
                    failure = failure.Failure;
                }
            }
            allNode.Clear();
            allNode = null;
            root    = null;


            var min        = new List <ushort>();
            var max        = new List <ushort>();
            var wildcard   = new List <int>();
            var nextIndexs = new List <Dictionary <ushort, int> >();
            var end        = new List <int>()
            {
                0
            };
            var resultIndex = new List <int>();

            for (int i = 0; i < allNode2.Count; i++)
            {
                var dict = new Dictionary <ushort, int>();
                var node = allNode2[i];
                min.Add(node.minflag);
                max.Add(node.maxflag);

                if (node.HasWildcard)
                {
                    wildcard.Add(node.WildcardNode.Index);
                }
                else
                {
                    wildcard.Add(0);
                }

                if (i > 0)
                {
                    foreach (var item in node.m_values)
                    {
                        dict[item.Key] = item.Value.Index;
                    }
                }
                foreach (var item in node.Results)
                {
                    resultIndex.Add(item);
                }
                end.Add(resultIndex.Count);
                nextIndexs.Add(dict);
            }
            var first = new int[Char.MaxValue + 1];

            foreach (var item in allNode2[0].m_values)
            {
                first[item.Key] = item.Value.Index;
            }

            _firstIndex = first;
            _min        = min.ToArray();
            _max        = max.ToArray();
            _nextIndex  = new IntDictionary[nextIndexs.Count];
            for (int i = 0; i < nextIndexs.Count; i++)
            {
                IntDictionary dictionary = new IntDictionary(nextIndexs[i]);
                //dictionary.SetDictionary(nextIndexs[i]);
                _nextIndex[i] = dictionary;
            }
            _wildcard    = wildcard.ToArray();
            _end         = end.ToArray();
            _resultIndex = resultIndex.ToArray();

            allNode2.Clear();
            allNode2 = null;
        }
Esempio n. 3
0
        protected internal virtual void Load(BinaryReader br)
        {
            var length = br.ReadInt32();

            _keywords = new string[length];
            for (int i = 0; i < length; i++)
            {
                _keywords[i] = br.ReadString();
            }

            length = br.ReadInt32();
            var bs = br.ReadBytes(length);

            _dict = ByteArrToIntArr(bs);

            length = br.ReadInt32();
            bs     = br.ReadBytes(length);
            _first = ByteArrToIntArr(bs);

            length = br.ReadInt32();
            bs     = br.ReadBytes(length);
            _end   = ByteArrToIntArr(bs);

            length       = br.ReadInt32();
            bs           = br.ReadBytes(length);
            _resultIndex = ByteArrToIntArr(bs);

            var dictLength = br.ReadInt32();

            _nextIndex = new IntDictionary[dictLength];
            List <int> max = new List <int>();
            List <int> min = new List <int>();

            for (int i = 0; i < dictLength; i++)
            {
                length = br.ReadInt32();


                bs = br.ReadBytes(length);
                var keys = ByteArrToIntArr(bs);

                bs = br.ReadBytes(length);
                var values = ByteArrToIntArr(bs);

                var dict = new Dictionary <int, int>();
                for (int j = 0; j < keys.Length; j++)
                {
                    dict[keys[j]] = values[j];
                }
                IntDictionary dictionary = new IntDictionary();
                dictionary.SetDictionary(dict);
                _nextIndex[i] = dictionary;
                if (length == 0)
                {
                    max.Add(0);
                    min.Add(int.MaxValue);
                }
                else
                {
                    max.Add(keys.Last());
                    min.Add(keys[0]);
                }
            }
            _max = max.ToArray();
            _min = min.ToArray();
        }
Esempio n. 4
0
        private void SetKeywords()
        {
            var root = new TrieNode();
            Dictionary <int, List <TrieNode> > allNodeLayers = new Dictionary <int, List <TrieNode> >();

            for (int i = 0; i < _keywords.Length; i++)
            {
                var p  = _keywords[i];
                var nd = root;
                for (int j = 0; j < p.Length; j++)
                {
                    nd = nd.Add((char)p[j]);
                    if (nd.Layer == 0)
                    {
                        nd.Layer = j + 1;
                        List <TrieNode> trieNodes;
                        if (allNodeLayers.TryGetValue(nd.Layer, out trieNodes) == false)
                        {
                            trieNodes = new List <TrieNode>();
                            allNodeLayers[nd.Layer] = trieNodes;
                        }
                        trieNodes.Add(nd);
                    }
                }
                nd.SetResults(i);
            }

            List <TrieNode> allNode = new List <TrieNode>();

            allNode.Add(root);
            foreach (var trieNodes in allNodeLayers)
            {
                foreach (var nd in trieNodes.Value)
                {
                    allNode.Add(nd);
                }
            }
            allNodeLayers = null;


            for (int i = 1; i < allNode.Count; i++)
            {
                var nd = allNode[i];
                nd.Index = i;
                TrieNode r = nd.Parent.Failure;
                char     c = nd.Char;
                while (r != null && !r.m_values.ContainsKey(c))
                {
                    r = r.Failure;
                }
                if (r == null)
                {
                    nd.Failure = root;
                }
                else
                {
                    nd.Failure = r.m_values[c];
                    foreach (var result in nd.Failure.Results)
                    {
                        nd.SetResults(result);
                    }
                }
            }
            root.Failure = root;

            StringBuilder stringBuilder = new StringBuilder();

            for (int i = 1; i < allNode.Count; i++)
            {
                stringBuilder.Append(allNode[i].Char);
            }
            var length = CreateDict(stringBuilder.ToString());

            stringBuilder = null;


            var allNode2 = new List <TrieNode2Ex>();

            for (int i = 0; i < allNode.Count; i++)
            {
                allNode2.Add(new TrieNode2Ex()
                {
                    Index = i
                });
            }
            for (int i = 0; i < allNode2.Count; i++)
            {
                var oldNode = allNode[i];
                var newNode = allNode2[i];

                foreach (var item in oldNode.m_values)
                {
                    var key   = (char)_dict[item.Key];
                    var index = item.Value.Index;
                    newNode.Add(key, allNode2[index]);
                }
                foreach (var item in oldNode.Results)
                {
                    newNode.SetResults(item);
                }
                oldNode = oldNode.Failure;
                while (oldNode != root)
                {
                    foreach (var item in oldNode.m_values)
                    {
                        var key   = (char)_dict[item.Key];
                        var index = item.Value.Index;
                        if (newNode.HasKey(key) == false)
                        {
                            newNode.Add(key, allNode2[index]);
                        }
                    }
                    foreach (var item in oldNode.Results)
                    {
                        newNode.SetResults(item);
                    }
                    oldNode = oldNode.Failure;
                }
            }
            allNode.Clear();
            allNode = null;
            root    = null;

            var min        = new List <int>();
            var max        = new List <int>();
            var nextIndexs = new List <Dictionary <int, int> >();
            var end        = new List <int>()
            {
                0
            };
            var resultIndex = new List <int>();

            for (int i = 0; i < allNode2.Count; i++)
            {
                var dict = new Dictionary <int, int>();
                var node = allNode2[i];
                min.Add(node.minflag);
                max.Add(node.maxflag);

                if (i > 0)
                {
                    foreach (var item in node.m_values)
                    {
                        dict[item.Key] = item.Value.Index;
                    }
                }
                foreach (var item in node.Results)
                {
                    resultIndex.Add(item);
                }
                end.Add(resultIndex.Count);
                nextIndexs.Add(dict);
            }
            var first = new int[Char.MaxValue + 1];

            foreach (var item in allNode2[0].m_values)
            {
                first[item.Key] = item.Value.Index;
            }

            _first     = first;
            _min       = min.ToArray();
            _max       = max.ToArray();
            _nextIndex = new IntDictionary[nextIndexs.Count];
            for (int i = 0; i < nextIndexs.Count; i++)
            {
                IntDictionary dictionary = new IntDictionary();
                dictionary.SetDictionary(nextIndexs[i]);
                _nextIndex[i] = dictionary;
            }
            _end         = end.ToArray();
            _resultIndex = resultIndex.ToArray();

            allNode2.Clear();
            allNode2 = null;
        }