| // LUCENENET TODO: Port issues - missing Normalizer2 dependency from icu.net |
| |
| //using Icu; |
| //using Lucene.Net.Analysis.TokenAttributes; |
| //using Lucene.Net.Support; |
| |
| //namespace Lucene.Net.Analysis.ICU |
| //{ |
| // /* |
| // * Licensed to the Apache Software Foundation (ASF) under one or more |
| // * contributor license agreements. See the NOTICE file distributed with |
| // * this work for additional information regarding copyright ownership. |
| // * The ASF licenses this file to You under the Apache License, Version 2.0 |
| // * (the "License"); you may not use this file except in compliance with |
| // * the License. You may obtain a copy of the License at |
| // * |
| // * http://www.apache.org/licenses/LICENSE-2.0 |
| // * |
| // * Unless required by applicable law or agreed to in writing, software |
| // * distributed under the License is distributed on an "AS IS" BASIS, |
| // * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // * See the License for the specific language governing permissions and |
| // * limitations under the License. |
| // */ |
| |
| // public class ICUNormalizer2Filter : TokenFilter |
| // { |
| // private readonly ICharTermAttribute termAtt; |
| // private readonly Normalizer2 normalizer; |
| |
| // /// <summary> |
| // /// Create a new <see cref="Normalizer2Filter"/> that combines NFKC normalization, Case |
| // /// Folding, and removes Default Ignorables (NFKC_Casefold) |
| // /// </summary> |
| // /// <param name="input"></param> |
| // public ICUNormalizer2Filter(TokenStream input) |
| // : this(input, new Normalizer2(Normalizer.UNormalizationMode.UNORM_NFKC) /*Normalizer2.getInstance(null, "nfkc_cf", Normalizer2.Mode.COMPOSE)*/) |
| // { |
| // } |
| |
| // /// <summary> |
| // /// Create a new <see cref="Normalizer2Filter"/> with the specified <see cref="Normalizer2"/> |
| // /// </summary> |
| // /// <param name="input">stream</param> |
| // /// <param name="normalizer">normalizer to use</param> |
| // public ICUNormalizer2Filter(TokenStream input, Normalizer2 normalizer) |
| // : base(input) |
| // { |
| // this.normalizer = normalizer; |
| // this.termAtt = AddAttribute<ICharTermAttribute>(); |
| // } |
| |
| // public override sealed bool IncrementToken() |
| // { |
| // if (m_input.IncrementToken()) |
| // { |
| // var term = termAtt.ToString(); |
| // try |
| // { |
| // if (!normalizer.IsNormalized(term)) |
| // { |
| // termAtt.SetEmpty().Append(normalizer.Normalize(term)); |
| // } |
| // } |
| // catch (System.Exception ex) |
| // { |
| |
| // } |
| // return true; |
| // } |
| // else |
| // { |
| // return false; |
| // } |
| // } |
| // } |
| //} |
