| using Lucene.Net.Analysis.Util; |
| using System.Collections.Generic; |
| using System; |
| using System.IO; |
| using System.Text.RegularExpressions; |
| |
| namespace Lucene.Net.Analysis.Pattern |
| { |
| /* |
| * 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. |
| */ |
| |
| /// <summary> |
| /// Factory for <see cref="PatternReplaceCharFilter"/>. |
| /// <code> |
| /// <fieldType name="text_ptnreplace" class="solr.TextField" positionIncrementGap="100"> |
| /// <analyzer> |
| /// <charFilter class="solr.PatternReplaceCharFilterFactory" |
| /// pattern="([^a-z])" replacement=""/> |
| /// <tokenizer class="solr.KeywordTokenizerFactory"/> |
| /// </analyzer> |
| /// </fieldType></code> |
| /// |
| /// @since Solr 3.1 |
| /// </summary> |
| public class PatternReplaceCharFilterFactory : CharFilterFactory |
| { |
| private readonly Regex pattern; |
| private readonly string replacement; |
| private readonly int maxBlockChars; |
| private readonly string blockDelimiters; |
| |
| /// <summary> |
| /// Creates a new <see cref="PatternReplaceCharFilterFactory"/> </summary> |
| public PatternReplaceCharFilterFactory(IDictionary<string, string> args) : base(args) |
| { |
| pattern = GetPattern(args, "pattern"); |
| replacement = Get(args, "replacement", ""); |
| // TODO: warn if you set maxBlockChars or blockDelimiters ? |
| maxBlockChars = GetInt32(args, "maxBlockChars", |
| #pragma warning disable 612, 618 |
| PatternReplaceCharFilter.DEFAULT_MAX_BLOCK_CHARS); |
| #pragma warning restore 612, 618 |
| if (args.TryGetValue("blockDelimiters", out blockDelimiters)) |
| { |
| args.Remove("blockDelimiters"); |
| } |
| if (args.Count > 0) |
| { |
| throw new ArgumentException(string.Format(J2N.Text.StringFormatter.CurrentCulture, "Unknown parameters: {0}", args)); |
| } |
| } |
| |
| public override TextReader Create(TextReader input) |
| { |
| #pragma warning disable 612, 618 |
| return new PatternReplaceCharFilter(pattern, replacement, maxBlockChars, blockDelimiters, input); |
| #pragma warning restore 612, 618 |
| } |
| } |
| } |